US20150237369A1 - Moving picture encoding/decoding apparatus and method for processing of moving picture divided in units of slices - Google Patents

Moving picture encoding/decoding apparatus and method for processing of moving picture divided in units of slices Download PDF

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Publication number
US20150237369A1
US20150237369A1 US14/701,024 US201514701024A US2015237369A1 US 20150237369 A1 US20150237369 A1 US 20150237369A1 US 201514701024 A US201514701024 A US 201514701024A US 2015237369 A1 US2015237369 A1 US 2015237369A1
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image
slices
slice
moving picture
macroblock
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US14/701,024
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Dae-sung Cho
Woong-Il Choi
Kwan-Woong Song
Young-Hun Joo
Yong-Serk Kim
Dong-Gyu Sim
Jung-Hak Nam
Bong-Il Ji
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Samsung Electronics Co Ltd
Industry Academic Collaboration Foundation of Kwangwoon University
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Samsung Electronics Co Ltd
Industry Academic Collaboration Foundation of Kwangwoon University
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Priority to US14/701,024 priority Critical patent/US20150237369A1/en
Publication of US20150237369A1 publication Critical patent/US20150237369A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • H04N19/513Processing of motion vectors
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/156Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/174Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a slice, e.g. a line of blocks or a group of blocks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/436Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation using parallelised computational arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding

Definitions

  • Apparatuses and methods consistent with exemplary embodiments relate to a moving picture encoding/decoding apparatus and method for processing of a moving picture, which is divided in units of slices.
  • the amount of computation performed for motion estimation greatly affects the total amount of computation required for coding.
  • the complexity thereof is very high.
  • the complexity thereof increases exponentially.
  • FIG. 1 is a block diagram schematically illustrating the configuration of a conventional moving picture encoding apparatus for processing a moving picture divided in units of slices.
  • the moving picture encoding apparatus includes a memory 10 , a multi-core processor 20 , an MPEG data division module 30 , and a decoding/merging module 40 .
  • one-frame data of a bitstream encoded by an MPEG algorithm is stored in the memory 10 , is allocated as threads to cores within the multi-core processor 20 , is decoded, and is then merged.
  • the multi-core processor 20 includes a plurality of cores, i.e. central processing units (CPUs), which operate thread by thread, wherein each core operates independently.
  • the memory 10 includes a plurality of buffers which store individual slices (e.g. slice 1, slice 2, . . . , slice N) received from the MPEG data division module 30 , and provide the stored slices to cores (core 1, core 2, . . . , core N) of the multi-core processor 20 .
  • the MPEG data division module 30 when receiving MPEG data, extracts decoding information, divides the received MPEG data into slices, and distributes decoding processes for bitstreams based on the divided individual slice units to the cores in the multi-core processor as threads.
  • the MPEG data division module 30 includes a header parser 32 , a slice divider 34 , a core computing load measurer 36 , and a distributor 38 .
  • the header parser 32 receives MPEG data in the form of a bitstream, and performs a basic header parsing operation, such as extraction of decoding information. In addition, the header parser 32 divides and allocates the region of the memory 10 so as to prepare the buffers for the slices. That is, the header parser 32 divides the region of the memory 10 into a plurality of buffers so as to correspond to the cores of the multi-core processor 20 , and allocates the buffers to the cores.
  • the slice divider 34 detects a slice start code within a bitstream and divides the bitstream in units of slices.
  • the distributor 38 properly distributes bitstreams divided in units of slices to the buffers.
  • the core computing load measurer 36 measures a computing occupancy of each core.
  • many moving picture codecs use a parallel processing scheme of dividing an image into slices and allocating the slices to cores, respectively, in order to support parallel processing in a multi-core environment.
  • a parallel processing scheme of dividing an image into slices and allocating the slices to cores, respectively, in order to support parallel processing in a multi-core environment.
  • such a scheme degrades the encoding performance as a whole, as compared with a scheme of encoding the entire image.
  • One or more exemplary embodiments provide a moving picture encoding/decoding apparatus and method for processing of a moving picture, which is divided in units of slices.
  • a moving picture encoding apparatus for processing a moving picture which is divided in units of slices; the apparatus including: a slice divider which divides an input image into image slices in units of slices; an image encoder including a plurality of encoding units which receive and encode the image slices, respectively; a bitstream generator which generates a bitstream through use of the encoded image slices; and a synchronization controller which determines an encoding order of the image slices, and controlling the encoding units to encode the image slices in parallel according to the encoding order.
  • a moving picture decoding apparatus for processing a moving picture which is divided in units of slices; the apparatus including: a slice divider which divides an input bitstream into bitstream slices in units of slices; an image decoder including a plurality of decoding units which receive and decode the bitstream slices, respectively; and a synchronization controller which determines a decoding order of the bitstream slices, and controlling the decoding units to decode the bitstream slices in parallel according to the decoding order.
  • an encoding method by a moving picture encoder which includes a plurality of encoding units for processing a moving picture divided in units of slices, the method including the steps of: dividing an input image into image slices in units of slices; determining an encoding order of a plurality of macroblocks included in the image slices into which the input image is divided; simultaneously encoding the respective image slices according to the encoding order through use of the encoding units; and generating a bitstream through use of the encoded image slices.
  • a decoding method by a moving picture decoder which includes a plurality of decoding units for processing a moving picture divided in units of slices, the method including: dividing an input bitstream into bitstream slices in units of slices; determining a decoding order of a plurality of macroblocks included in the bitstream slices into which the input bitstream is divided; and simultaneously decoding the respective bitstream slices according to the decoding order through use of the decoding units.
  • FIG. 1 is a block diagram schematically illustrating the configuration of a conventional moving picture encoding apparatus for processing a moving picture divided in units of slices;
  • FIG. 2 is a block diagram schematically illustrating the configuration of a moving picture encoding apparatus for processing a moving picture divided in units of slices according to an exemplary embodiment
  • FIG. 3 is a block diagram schematically illustrating the configuration of a moving picture decoding apparatus for processing a moving picture divided in units of slices according to an exemplary embodiment
  • FIG. 4 is a flowchart illustrating a moving picture encoding method for processing a moving picture divided in units of slices according to an exemplary embodiment
  • FIG. 5 is a flowchart illustrating a moving picture decoding method for processing a moving picture divided in units of slices according to an exemplary embodiment
  • FIG. 6 is a view illustrating a moving picture encoding order in image slices according to an exemplary embodiment.
  • FIGS. 7 to 13 are views illustrating moving picture encoding orders in image slices according to other exemplary embodiments.
  • FIG. 2 is a block diagram schematically illustrating the configuration of a moving picture encoding apparatus for processing a moving picture divided in units of slices according to an exemplary embodiment.
  • the moving picture encoding apparatus 50 includes a slice divider 60 , an image encoder 70 , a synchronization controller 90 , and a bitstream generator 80 .
  • the slice divider 60 divides an image, which is input to the moving picture encoding apparatus 50 , in units of slices, thereby generating image slices.
  • image slices represent images obtained by dividing an image in units of slices.
  • the slice divider 60 can divide an input image into image slices and determine an encoding order for the image slices so that information can be shared between image slices.
  • sharing information between image slices signifies that, when the image encoder 70 encodes image slices, each image encoding unit makes reference to a pre-encoded image slice or an image slice, other than an image slice allocated to the image encoding unit itself, in order to encode the allocated image slice, wherein the image encoder 70 will be described later.
  • the third image encoding unit 70 - 3 may make reference to a second image slice encoded in advance, or make reference to a first image slice encoded by a second image encoding unit 70 - 2 .
  • the image encoder 70 receives at least one image slice obtained by dividing an image in units of slices by the slice divider 60 , and encodes the received image slice.
  • the image encoder 70 includes the first image encoding unit 70 - 1 , the second image encoding unit 70 - 2 , the third image encoding unit 70 - 3 , . . . , an N th image encoding unit 70 -N, which receive and encode a first image slice, a second image slice, a third image slice, . . . , an N th image slice, respectively.
  • the image encoding unit may encode the allocated image slice by making an image slice, other than the allocated image slice.
  • the image encoder 70 may make reference to information on each image slice in units of macroblocks included in each image slice.
  • the second image encoding unit 70 - 2 may make reference to a fourth macroblock in a fourth image slice currently being encoded by the third image encoding unit.
  • Information to which the image encoder 70 makes reference from an image slice or a macroblock included in an image slice includes, for example, motion estimation information according to each frame, a motion vector of each macroblock, and the number of coefficients, and such information may be stored in a memory (not shown) included in the moving picture encoding apparatus 50 .
  • the image encoding units shares information between image slices with each other, thereby increasing the encoding efficiency.
  • the bitstream generator 80 receives each encoded image slice from the first image encoding unit 70 - 1 through the N th image encoding unit 70 -N, and generates a bitstream.
  • the synchronization controller 90 synchronizes encoding time points of macroblocks included in the image slices.
  • Each image slice includes at least one macroblock.
  • the synchronization controller 90 according to an exemplary embodiment can simultaneously control the encoding time points of macroblocks included in image slices.
  • a first image slice includes a first macroblock, a second macroblock, and a third macroblock
  • a second image slice includes a fourth macroblock, a fifth macroblock, and a sixth macroblock.
  • the first image slice is encoded by the first image encoding unit 70 - 1
  • the second image slice is encoded by the second image encoding unit 70 - 2 .
  • the synchronization controller 90 can control the first image encoding unit 70 - 1 and the second image encoding unit 70 - 2 such that the first macroblock of the first image slice and the fourth macroblock of the second image slice can be simultaneously encoded.
  • FIG. 3 is a block diagram schematically illustrating the configuration of a moving picture decoding apparatus for processing a moving picture divided in units of slices according to an exemplary embodiment.
  • the moving picture decoding apparatus 100 includes a bitstream parser 110 , the slice divider 60 , an image decoder 120 , an image generator 130 , and the synchronization controller 90 .
  • the bitstream parser 110 parses a bitstream input to the moving picture decoding apparatus 100 .
  • the slice divider 60 divides the bitstream, which has been parsed by the bitstream parser 110 , in units of slices, thereby generating bitstream slices.
  • each bitstream obtained by dividing a bitstream in units of slices will be referred to as a “bitstream slice.”
  • the slice divider 60 may determine a decoding order of bitstream slices obtained by dividing a bitstream in units of slices.
  • the slice divider 60 transfers first to N th bitstream slices to the image decoder 120 according to the decoding order.
  • the image decoder 120 decodes at least one bitstream slice which is input in the order determined by the slice divider 60 .
  • the image decoder 120 includes a first image decoding unit 120 - 1 , a second image decoding unit 120 - 2 , . . . , an N th image decoding unit 120 -N, which receive and decode a first bitstream slice, a second bitstream slice, . . . , an Nth bitstream slice, respectively.
  • the image generator 130 receives each decoded bitstream slice, and generates an image.
  • the generated image may be an image divided into image slices by the moving picture encoding apparatus 50 , and may be output and/or reproduced through a display unit (not shown) provided in advance in the moving picture decoding apparatus 100 according to an exemplary embodiment.
  • the synchronization controller 90 synchronizes decoding time points of macroblocks included in the bitstream slices.
  • the synchronization controller 90 according to an exemplary embodiment can simultaneously control the decoding time points of macroblocks included in the bitstream slices.
  • a first bitstream slice includes a first macroblock, a second macroblock, and a third macroblock
  • a second bitstream slice includes a fourth macroblock, a fifth macroblock, and a sixth macroblock.
  • the first bitstream slice is decoded by the first image decoding unit 120 - 1
  • the second bitstream slice is decoded by the second image decoding unit 120 - 2 .
  • the synchronization controller 90 can control the first image decoding unit 120 - 1 and the second image decoding unit 120 - 2 such that the first macroblock of the first bitstream slice and the fourth macroblock of the second bitstream slice can be simultaneously decoded.
  • FIG. 4 is a flowchart illustrating a moving picture encoding method for processing a moving picture divided in units of slices according to an exemplary embodiment.
  • step 140 the slice divider 60 divides an image, which is input to the moving picture encoding apparatus 50 , into image slices based on a slice unit.
  • step 142 the slice divider 60 allocates the image slices to the image encoder 70 , i.e. the image encoding units.
  • step 144 the moving picture encoding apparatus 50 encodes the image slices in parallel while controlling the encoding time point of each image slice.
  • controlling the encoding time point of each image slice is performed by the synchronization controller 90
  • encoding the image slices in parallel is performed by the image encoder 70 .
  • the bitstream generator 80 When the image slices have been encoded, the bitstream generator 80 generates a bitstream through the use of the encoded image slices in step 146 . In step 148 , the moving picture encoding apparatus 50 outputs the generated bitstream.
  • FIG. 5 is a flowchart illustrating a moving picture decoding method for processing a moving picture divided in units of slices according to an exemplary embodiment.
  • step 150 the slice divider 60 divides a bitstream, which is input to the moving picture decoding apparatus 100 , into bitstream slices based on a slice unit.
  • step 152 the slice divider 60 allocates the bitstream slices to the image decoder 120 , i.e. the image decoding units.
  • step 154 the moving picture decoding apparatus 100 decodes the bitstream slices in parallel while controlling the decoding time point of each bitstream slice.
  • controlling the decoding time point of each bitstream slice is performed by the synchronization controller 90
  • decoding the bitstream slices in parallel is performed by the image decoder 120 .
  • the image generator 130 When the bitstream slices have been decoded, the image generator 130 generates an image through the use of the decoded bitstream slices in step 156 . In step 158 , the moving picture decoding apparatus 100 outputs the generated image through a display unit (not shown) provided in advance.
  • a moving picture divided in units of slices can be processed.
  • FIG. 6 is a view illustrating a moving picture encoding order in image slices according to an exemplary embodiment.
  • FIG. 6 shows one frame of a moving picture.
  • one frame includes a first image slice 162 , a second image slice 164 , a third image slice 166 , a fourth image slice 168 , and a fifth image slice 170 .
  • each of image slices 162 , 164 , 166 , 168 , and 170 includes 20 macroblocks.
  • a first image encoding unit 70 - 1 encodes the first image slice 162
  • a second image encoding unit 70 - 2 encodes the second image slice 164
  • a third image encoding unit 70 - 3 encodes the third image slice 166
  • a fourth image encoding unit 70 - 4 encodes the fourth image slice 168
  • a fifth image encoding unit 70 - 5 encodes the fifth image slice 170 .
  • the first image encoding unit 70 - 1 encodes macroblocks included in the first image slice 162 in the order of “ 162 - 1 (t 1 )”, “ 162 - 2 (t 2 )”, “ 162 - 3 (t 3 )”, “ 162 - 4 (t 4 )”, “ 162 - 5 (t 5 )”, “ 162 - 6 (t 6 )”, “ 162 - 7 (t 7 )”, “ 162 - 8 (t 8 )”, . . . , “ 162 -N(t N )”.
  • the second image encoding unit 70 - 2 encodes macroblocks included in the second image slice 164 in the order of “ 164 - 5 (t 5 )”, “ 164 - 6 (t 6 )”, “ 164 - 7 (t 7 )”, “ 164 - 8 (t 8 )”, “ 164 - 9 (t 9 )”, “ 164 - 10 (t 10 )”, “ 164 - 1 (t 11 )”, “ 164 - 12 (t 12 )”, “ 164 - 13 (t 13 )”, . . .
  • the third image encoding unit 70 - 3 encodes the third image slice 166 in the order of “ 166 - 9 (t 9 )”, “ 166 - 10 (t 10 )”, “ 166 - 1 (t 11 )”, “ 166 - 12 (t 12 )”, “ 166 - 13 (t 13 )”, “ 166 - 14 (t 14 )”, “ 166 - 15 (t 15 )”, “ 166 - 16 (t 16 )”, . . .
  • the fourth image encoding unit 70 - 4 encodes the fourth image slice 168 in the order of “ 168 - 13 (t 13 )”, “ 168 - 14 (t 14 )”, “ 168 - 15 (t 15 )”, “ 168 - 16 (t 16 )”, “ 168 - 17 (t 17 )”, “ 168 - 18 (t 18 )”, “ 168 - 19 (t 19 )”, “ 168 - 20 (t 20 )”, . . .
  • each numeral expressed in parentheses represents an encoding time point of each corresponding macroblock.
  • macroblock 170 - 21 starts to be encoded at time point t 21 by the fifth image encoding unit 70 - 5 .
  • the first image encoding unit 70 - 1 encodes macroblock 162 - 1 (t 1 ) first of all. Since macroblock 162 - 1 (t 1 ), which is a macroblock (hereinafter, referred to as an “adjacent macroblock”) adjacent to macroblock 162 - 2 (t 2 ), has already been encoded, the first image encoding unit 70 - 1 can make reference to macroblock 162 - 1 (t 1 ) when encoding macroblock 162 - 2 (t 2 ).
  • the first image encoding unit 70 - 1 encodes macroblock 162 - 3 (t 3 ) by making reference to macroblocks 162 - 1 (t 1 ) and 162 - 2 (t 2 ). Also, when macroblock 162 - 3 (t 3 ) has been encoded, the first image encoding unit 70 - 1 encodes macroblock 162 - 4 (t 4 ) by making reference to macroblocks 162 - 1 (t 1 ), 162 - 2 (t 2 ), and 162 - 3 (t 3 ), which correspond to adjacent macroblocks of macroblock 162 - 4 (t 4 ).
  • the first image encoding unit 70 - 1 encodes macroblock 162 - 5 (t 5 ) by making reference to macroblocks 162 - 3 (t 3 ) and 162 - 4 (t 4 ).
  • the range of adjacent macroblocks may be determined in such a manner that, for example, referring to FIG. 6 , the adjacent macroblocks of macroblock 164 - 4 in the second image slice 164 correspond to macroblocks 162 - 1 , 162 - 2 , 162 - 3 , 164 - 3 , 164 - 5 , 166 - 5 , 166 - 6 , and 166 - 7 .
  • the second image encoding unit 70 - 2 can encode macroblock 164 - 5 (t 5 ). That is, a time point at which the first image encoding unit 70 - 1 encodes macroblock 162 - 5 (t 5 ) and a time point at which the second image encoding unit 70 - 2 encodes macroblock 164 - 5 (t 5 ) become equal t o each other.
  • the synchronization controller 90 controls the first image encoding unit 70 - 1 and the second image encoding unit 70 - 2 so that a time point at which the first image encoding unit 70 - 1 encodes macroblock 162 - 5 (t 5 ) can be equal to a time point at which the second image encoding unit 70 - 2 encodes macroblock 164 - 5 (t 5 ).
  • the third image encoding unit 70 - 3 can encode macroblock 166 - 9 (t 9 ). While the third image encoding unit 70 - 3 encodes macroblock 166 - 9 (t 9 ), the first image encoding unit 70 - 1 encodes macroblock 162 - 9 (t 9 ), and the second image encoding unit 70 - 2 encodes macroblock 164 - 9 (t 9 ).
  • the exemplary embodiments provide the moving picture encoding apparatus 50 , which can process image slices allocated to each image encoding unit in such a manner as to encode a plurality of image slices at the same time.
  • the method for allocating image slices and encoding macroblocks, as described above, can be applied even to the moving picture decoding apparatus 100 according to the exemplary embodiment.
  • an image slice division scheme, an encoding order of macroblocks, and an encoding scheme thereof, which will be described later with reference to FIG. 7 can be applied to the moving picture decoding apparatus 100 , too.
  • a time point at which the second image decoding unit 120 - 2 decodes macroblock 164 - 9 (t 9 ) and a time point at which the third image decoding unit 120 - 3 decodes macroblock 166 - 9 (t 9 ) are equal to each other.
  • FIGS. 7 to 12 are views illustrating moving picture encoding orders in image slices according to other exemplary embodiments.
  • FIG. 7 shows a frame including five image slices 162 , 164 , 166 , 168 , and 170 , as shown in FIG. 6 .
  • the image encoder 70 encodes macroblocks, which are included in each image slice 162 , 164 , 166 , 168 , and 170 , in a Z-shape along a horizontal direction within each corresponding image slice.
  • the first image encoding unit 70 - 1 encodes macroblock 162 - 11 (t 11 ) by making reference to macroblocks 162 - 9 (t 9 ) and 162 - 10 (t 10 ) at the same time as the second image encoding unit 70 - 2 encodes macroblock 164 - 11 (t 11 ) by making reference to pre-encoded macroblocks 162 - 7 (t 7 ), 162 - 8 (t 8 ), 164 - 9 (t 9 ), and 164 - 10 (t 10 ).
  • the third image encoding unit 70 - 3 encodes macroblock 166 - 11 (t 11 ) by making reference to pre-encoded macroblocks 164 - 7 (t 7 ), 164 - 8 (t 8 ), 166 - 9 (t 9 ), and 166 - 10 (t 10 ).
  • the fourth image encoding unit 70 - 4 encodes macroblock 168 - 13 (t 13 ), which is included in the fourth image slice 168 , through the use of macroblocks 166 - 11 (t 11 ) and 166 - 12 (t 12 ) included in the third image slice 166 .
  • it is assumed that one or more pre-encoded macroblocks have been stored in a memory (not shown) provided in advance in the moving picture encoding apparatus 50 .
  • FIG. 8 is a view illustrating a frame including 10 image slices. Each image slice shown in FIG. 8 includes 10 macroblocks, differently from the image slices shown in FIGS. 6 and 7 .
  • a macroblock can be encoded by making reference to at least one adjacent macroblock when the adjacent macroblock has been encoded in advance, similar to the cases of FIGS. 6 and 7 .
  • the first image encoding unit 70 - 1 can encode macroblock 162 - 2 , which is an adjacent macroblock of macroblock 162 - 1 . Also, when macroblocks 162 - 1 and 162 - 2 have been encoded, the first image encoding unit 70 - 1 can encode macroblock 162 - 3 .
  • the synchronization controller 90 synchronizes the first image encoding unit 70 - 1 and the second image encoding unit 70 - 2 to encode macroblocks 162 - 3 and 164 - 3 at the same time.
  • the synchronization controller 90 synchronizes the first image encoding unit 70 - 1 , the second image encoding unit 70 - 2 , and the third image encoding unit 70 - 3 to encode macroblocks 162 - 5 , 164 - 5 , and 166 - 5 at the same time.
  • the synchronization controller 90 controls a time point at which each image encoding unit encodes each macroblock in such a manner as described above, thereby controlling the image encoder 70 , which includes a plurality of cores (not shown) and buffers (not shown), to efficiently encode an image divided in units of slices.
  • FIGS. 9 to 12 show cases where a frame having 10 ⁇ 10 macroblocks in the horizontal and vertical directions is divided into image slices in various manners. Referring to FIGS. 9 to 12 , it can be understood that the encoding order of macroblocks included in image slices may vary depending on image division schemes.
  • ten macroblocks in the vertical direction among 10 ⁇ 10 macroblocks correspond to a first image slice 162 ; nine macroblocks in the horizontal direction among the remaining macroblocks, except for the first image slice 162 , correspond to a second image slice 164 ; and nine macroblocks in the vertical direction among the remaining macroblocks, except for the first image slice 162 and the second image slice 164 , correspond to a third image slice 166 . That is, one frame of an image input to the moving picture encoding apparatus 50 is divided in units of slices in alternating the vertical and horizontal directions.
  • each image slice is encoded in such a manner that, after macroblock 162 - 1 (t 1 ) in the first image slice 162 has been encoded, macroblocks 162 - 2 (t 2 ) and 164 - 2 (t 2 ) are simultaneously encoded, macroblocks 162 - 3 (t 3 ), 164 - 3 (t 3 ), and 166 - 3 (t 3 ) are simultaneously encoded, and then macroblocks 162 - 4 (t 4 ), 164 - 4 (t 4 ), 166 - 4 (t 4 ), and 168 - 4 (t 4 ) are simultaneously encoded.
  • macroblock 162 - 1 (t 1 ) in a first image slice 162 is encoded first
  • macroblock 162 - 2 (t 2 ) in the first image slice 162 macroblock 164 - 2 (t 2 ) in a second image slice 164
  • macroblock 166 - 2 (t 2 ) in a third image slice 166 are encoded.
  • the synchronization controller 90 controls the image encoder 70 to encode macroblock 162 - 3 (t 3 ) in the first image slice 162 , macroblock 164 - 3 (t 3 ) in the second image slice 164 , macroblock 166 - 3 (t 3 ) in the third image slice 166 , and macroblock 168 - 3 (t 3 ) in a fourth image slice 168 .
  • the image encoder 70 encodes a plurality of image slices, which are included in a frame, in parallel in the aforementioned manner under the control of the synchronization controller 90 .
  • FIGS. 11 and 12 illustrate encoding orders of image slices when one frame includes four image slices 162 , 164 , 166 , and 168 .
  • macroblocks 162 - 1 (t 1 ), 162 - 2 (t 2 ), 162 - 3 (t 3 ), 162 - 4 (t 4 ), and 162 - 5 (t 5 ) in a first image slice 162 are encoded in regular sequence
  • macroblocks 166 - 2 (t 2 ), 166 - 3 (t 3 ), 166 - 4 (t 4 ), 166 - 5 (t 5 ), and 166 - 6 (t 6 ) in a third image slice 166 are encoded in regular sequence.
  • the second image encoding unit 70 - 2 can encode macroblock 164 - 6 (t 6 ) in a second image slice 164 by making reference to macroblock 162 - 5 (t 5 ).
  • the fourth image encoding unit 70 - 4 can encode macroblock 168 - 7 (t 7 ) in a fourth image slice by making reference to macroblock 162 - 5 (t 5 ), macroblock 164 - 6 (t 6 ), and macroblock 166 - 6 (t 6 ) in the third image slice 166 , wherein macroblock 166 - 6 (t 6 ) is encoded at the same time as macroblock 164 - 6 (t 6 ).
  • macroblock 162 - 1 of a first image slice 162 is positioned in the center of a frame. Accordingly, when macroblock 162 - 1 (t 1 ) is encoded by the first image encoding unit 70 - 1 , it is possible to encode macroblock 164 - 2 of a second image slice and macroblock 166 - 2 of a third image slice, which correspond to adjacent macroblocks of macroblock 162 - 1 .
  • the moving picture encoding apparatus 50 progresses the encoding in a direction from the center of the frame to the edge of the frame.
  • FIG. 13 is a view illustrating a case where the moving picture encoding apparatus 50 performs the encoding of macroblocks in a sequence progressing in the form of a spiral.
  • a frame includes a first image slice 162 , a second image slice 164 , a third image slice 166 , and a fourth image slice 168 , wherein each image slice has the form of a spiral.
  • each image slice has the form of a spiral.
  • encoding is performed in such a manner that macroblocks 162 - 1 (t 1 ), 164 - 1 (t 1 ), 166 - 1 (t 1 ), and 168 - 1 (t 1 ) are encoded at the same time; macroblocks 162 - 2 (t 2 ), 164 - 2 (t 2 ), 166 - 2 (t 2 ), and 168 - 2 (t 2 ) are encoded at the same time; and then macroblocks 162 - 3 (t 3 ), 164 - 3 (t 3 ), 166 - 3 (t 3 ), and 168 - 3 (t 3 ) are encoded at the same time.

Abstract

Disclosed is a moving picture encoding/decoding apparatus and method for processing of a moving picture, which is divided in units of slices. The encoding method includes the steps of: dividing a moving picture in units of slices when the moving picture is received; determining an encoding order of moving pictures divided in units of slices; and generating a bitstream by encoding moving pictures, which are divided in unites of slices, according to a corresponding order when the encoding order has been determined.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is a Continuation Application of U.S. application Ser. No. 13/128,723 filed May 11, 2011, which claims priority from National Stage Application under 35 U.S.C. §371 of PCT/KR2009/006484 filed on Nov. 5, 2009, which claims priority from Korean Patent Application No. 10-2008-0111850 filed on Nov. 11, 2008 in the Korean Intellectual Property Office, all the disclosures of which are incorporated herein in their entireties by reference.
  • BACKGROUND
  • 1. Field
  • Apparatuses and methods consistent with exemplary embodiments relate to a moving picture encoding/decoding apparatus and method for processing of a moving picture, which is divided in units of slices.
  • 2. Description of the Related Art
  • In general, the amount of computation performed for motion estimation greatly affects the total amount of computation required for coding. For example, when motion estimation is performed with one or more forward/backward reference frames, as in the H.264/AVC compression encoding scheme, the complexity thereof is very high. Especially, in the case of an MPEG-4 AVC/H.264 compression video structure, when motion estimation with respect to a hierarchical B-picture is performed using various blocks in order to achieve temporal scalability, the complexity thereof increases exponentially.
  • Meanwhile, recently, with the development of multi-core technology, a greater number of moving picture encoding/decoding apparatuses based on parallel processing have been developed. According to a parallel processing method using H.264/AVC, which is a recent moving picture compression standard, an image is divided into regions, each of which is called a “slice,” and each slice image region is individually encoded or decoded in each process or thread. Since the parallel processing method does not require information to be shared and transferred between image regions of slices, into which an image is divided, the parallel processing method has advantages in that the implementation thereof is easy and the efficiency of parallel processing is excellent.
  • FIG. 1 is a block diagram schematically illustrating the configuration of a conventional moving picture encoding apparatus for processing a moving picture divided in units of slices.
  • The moving picture encoding apparatus includes a memory 10, a multi-core processor 20, an MPEG data division module 30, and a decoding/merging module 40.
  • According to the conventional moving picture encoding apparatus, one-frame data of a bitstream encoded by an MPEG algorithm is stored in the memory 10, is allocated as threads to cores within the multi-core processor 20, is decoded, and is then merged.
  • The multi-core processor 20 includes a plurality of cores, i.e. central processing units (CPUs), which operate thread by thread, wherein each core operates independently. The memory 10 includes a plurality of buffers which store individual slices (e.g. slice 1, slice 2, . . . , slice N) received from the MPEG data division module 30, and provide the stored slices to cores (core 1, core 2, . . . , core N) of the multi-core processor 20.
  • The MPEG data division module 30, when receiving MPEG data, extracts decoding information, divides the received MPEG data into slices, and distributes decoding processes for bitstreams based on the divided individual slice units to the cores in the multi-core processor as threads. To this end, the MPEG data division module 30 includes a header parser 32, a slice divider 34, a core computing load measurer 36, and a distributor 38.
  • The header parser 32 receives MPEG data in the form of a bitstream, and performs a basic header parsing operation, such as extraction of decoding information. In addition, the header parser 32 divides and allocates the region of the memory 10 so as to prepare the buffers for the slices. That is, the header parser 32 divides the region of the memory 10 into a plurality of buffers so as to correspond to the cores of the multi-core processor 20, and allocates the buffers to the cores.
  • The slice divider 34 detects a slice start code within a bitstream and divides the bitstream in units of slices. The distributor 38 properly distributes bitstreams divided in units of slices to the buffers. The core computing load measurer 36 measures a computing occupancy of each core.
  • Meanwhile, referring to FIG. 1, many moving picture codecs use a parallel processing scheme of dividing an image into slices and allocating the slices to cores, respectively, in order to support parallel processing in a multi-core environment. However, such a scheme degrades the encoding performance as a whole, as compared with a scheme of encoding the entire image.
  • Therefore, there is a necessity for a parallel processing-based moving picture encoding/decoding apparatus which can enhance the efficiency in encoding or decoding of a moving picture through an efficient slice division.
  • SUMMARY
  • One or more exemplary embodiments provide a moving picture encoding/decoding apparatus and method for processing of a moving picture, which is divided in units of slices.
  • In accordance with an aspect of an exemplary embodiment, there is provided a moving picture encoding apparatus for processing a moving picture which is divided in units of slices; the apparatus including: a slice divider which divides an input image into image slices in units of slices; an image encoder including a plurality of encoding units which receive and encode the image slices, respectively; a bitstream generator which generates a bitstream through use of the encoded image slices; and a synchronization controller which determines an encoding order of the image slices, and controlling the encoding units to encode the image slices in parallel according to the encoding order.
  • In accordance with another exemplary embodiment, there is provided a moving picture decoding apparatus for processing a moving picture which is divided in units of slices; the apparatus including: a slice divider which divides an input bitstream into bitstream slices in units of slices; an image decoder including a plurality of decoding units which receive and decode the bitstream slices, respectively; and a synchronization controller which determines a decoding order of the bitstream slices, and controlling the decoding units to decode the bitstream slices in parallel according to the decoding order.
  • In accordance with another aspect of an exemplary embodiment, there is provided an encoding method by a moving picture encoder which includes a plurality of encoding units for processing a moving picture divided in units of slices, the method including the steps of: dividing an input image into image slices in units of slices; determining an encoding order of a plurality of macroblocks included in the image slices into which the input image is divided; simultaneously encoding the respective image slices according to the encoding order through use of the encoding units; and generating a bitstream through use of the encoded image slices.
  • In accordance with another aspect of an exemplary embodiment, there is provided a decoding method by a moving picture decoder which includes a plurality of decoding units for processing a moving picture divided in units of slices, the method including: dividing an input bitstream into bitstream slices in units of slices; determining a decoding order of a plurality of macroblocks included in the bitstream slices into which the input bitstream is divided; and simultaneously decoding the respective bitstream slices according to the decoding order through use of the decoding units.
  • According to another aspect of an exemplary embodiment it is possible to increase the encoding efficiency through the sharing of partial information between image slices.
  • According to yet another aspect of an exemplary embodiment it is possible to process a moving picture divided in units of slices.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The above and/or other aspects, features and advantages of the exemplary embodiments will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
  • FIG. 1 is a block diagram schematically illustrating the configuration of a conventional moving picture encoding apparatus for processing a moving picture divided in units of slices;
  • FIG. 2 is a block diagram schematically illustrating the configuration of a moving picture encoding apparatus for processing a moving picture divided in units of slices according to an exemplary embodiment;
  • FIG. 3 is a block diagram schematically illustrating the configuration of a moving picture decoding apparatus for processing a moving picture divided in units of slices according to an exemplary embodiment;
  • FIG. 4 is a flowchart illustrating a moving picture encoding method for processing a moving picture divided in units of slices according to an exemplary embodiment;
  • FIG. 5 is a flowchart illustrating a moving picture decoding method for processing a moving picture divided in units of slices according to an exemplary embodiment;
  • FIG. 6 is a view illustrating a moving picture encoding order in image slices according to an exemplary embodiment; and
  • FIGS. 7 to 13 are views illustrating moving picture encoding orders in image slices according to other exemplary embodiments.
  • DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
  • Hereinafter, exemplary embodiments will be described with reference to the accompanying drawings. In the following description, the same elements will be designated by the same reference numerals although they are shown in different drawings. In addition, in the following description of the exemplary embodiments, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the exemplary embodiments rather unclear.
  • FIG. 2 is a block diagram schematically illustrating the configuration of a moving picture encoding apparatus for processing a moving picture divided in units of slices according to an exemplary embodiment.
  • The moving picture encoding apparatus 50 includes a slice divider 60, an image encoder 70, a synchronization controller 90, and a bitstream generator 80.
  • The slice divider 60 divides an image, which is input to the moving picture encoding apparatus 50, in units of slices, thereby generating image slices. In the following description, image slices represent images obtained by dividing an image in units of slices. The slice divider 60 can divide an input image into image slices and determine an encoding order for the image slices so that information can be shared between image slices.
  • In this case, sharing information between image slices signifies that, when the image encoder 70 encodes image slices, each image encoding unit makes reference to a pre-encoded image slice or an image slice, other than an image slice allocated to the image encoding unit itself, in order to encode the allocated image slice, wherein the image encoder 70 will be described later. For example, when a third image encoding unit 70-3 encodes a third image slice, the third image encoding unit 70-3 may make reference to a second image slice encoded in advance, or make reference to a first image slice encoded by a second image encoding unit 70-2.
  • The image encoder 70 receives at least one image slice obtained by dividing an image in units of slices by the slice divider 60, and encodes the received image slice. The image encoder 70 includes the first image encoding unit 70-1, the second image encoding unit 70-2, the third image encoding unit 70-3, . . . , an Nth image encoding unit 70-N, which receive and encode a first image slice, a second image slice, a third image slice, . . . , an Nth image slice, respectively.
  • As described above, when each image encoding unit encodes an image slice allocated to the image encoding unit itself, the image encoding unit may encode the allocated image slice by making an image slice, other than the allocated image slice. In this case, when making reference to another image slice, the image encoder 70 may make reference to information on each image slice in units of macroblocks included in each image slice.
  • For example, when the second image encoding unit 70-2 encodes a fifth image slice allocated to the second image encoding unit 70-2, the second image encoding unit 70-2 may make reference to a fourth macroblock in a fourth image slice currently being encoded by the third image encoding unit. Information to which the image encoder 70 makes reference from an image slice or a macroblock included in an image slice includes, for example, motion estimation information according to each frame, a motion vector of each macroblock, and the number of coefficients, and such information may be stored in a memory (not shown) included in the moving picture encoding apparatus 50. As described above, the image encoding units shares information between image slices with each other, thereby increasing the encoding efficiency.
  • The bitstream generator 80 receives each encoded image slice from the first image encoding unit 70-1 through the Nth image encoding unit 70-N, and generates a bitstream.
  • When the image encoder 70 encodes image slices, the synchronization controller 90 synchronizes encoding time points of macroblocks included in the image slices. Each image slice includes at least one macroblock. The synchronization controller 90 according to an exemplary embodiment can simultaneously control the encoding time points of macroblocks included in image slices.
  • For example, it is assumed that a first image slice includes a first macroblock, a second macroblock, and a third macroblock, and a second image slice includes a fourth macroblock, a fifth macroblock, and a sixth macroblock. In addition, it is assumed that the first image slice is encoded by the first image encoding unit 70-1, and the second image slice is encoded by the second image encoding unit 70-2. The synchronization controller 90 according to an exemplary embodiment can control the first image encoding unit 70-1 and the second image encoding unit 70-2 such that the first macroblock of the first image slice and the fourth macroblock of the second image slice can be simultaneously encoded.
  • FIG. 3 is a block diagram schematically illustrating the configuration of a moving picture decoding apparatus for processing a moving picture divided in units of slices according to an exemplary embodiment.
  • According to an exemplary embodiment, the moving picture decoding apparatus 100 includes a bitstream parser 110, the slice divider 60, an image decoder 120, an image generator 130, and the synchronization controller 90.
  • The bitstream parser 110 parses a bitstream input to the moving picture decoding apparatus 100.
  • The slice divider 60 divides the bitstream, which has been parsed by the bitstream parser 110, in units of slices, thereby generating bitstream slices. Hereinafter, each bitstream obtained by dividing a bitstream in units of slices will be referred to as a “bitstream slice.” The slice divider 60 may determine a decoding order of bitstream slices obtained by dividing a bitstream in units of slices. The slice divider 60 transfers first to Nth bitstream slices to the image decoder 120 according to the decoding order.
  • The image decoder 120 decodes at least one bitstream slice which is input in the order determined by the slice divider 60. The image decoder 120 includes a first image decoding unit 120-1, a second image decoding unit 120-2, . . . , an Nth image decoding unit 120-N, which receive and decode a first bitstream slice, a second bitstream slice, . . . , an Nth bitstream slice, respectively.
  • The image generator 130 receives each decoded bitstream slice, and generates an image. In this case, the generated image may be an image divided into image slices by the moving picture encoding apparatus 50, and may be output and/or reproduced through a display unit (not shown) provided in advance in the moving picture decoding apparatus 100 according to an exemplary embodiment.
  • When the image decoder 120 decodes bitstream slices, the synchronization controller 90 synchronizes decoding time points of macroblocks included in the bitstream slices. The synchronization controller 90 according to an exemplary embodiment can simultaneously control the decoding time points of macroblocks included in the bitstream slices.
  • For example, it is assumed that a first bitstream slice includes a first macroblock, a second macroblock, and a third macroblock, and a second bitstream slice includes a fourth macroblock, a fifth macroblock, and a sixth macroblock. In addition, it is assumed that the first bitstream slice is decoded by the first image decoding unit 120-1, and the second bitstream slice is decoded by the second image decoding unit 120-2. The synchronization controller 90 can control the first image decoding unit 120-1 and the second image decoding unit 120-2 such that the first macroblock of the first bitstream slice and the fourth macroblock of the second bitstream slice can be simultaneously decoded.
  • FIG. 4 is a flowchart illustrating a moving picture encoding method for processing a moving picture divided in units of slices according to an exemplary embodiment.
  • In step 140, the slice divider 60 divides an image, which is input to the moving picture encoding apparatus 50, into image slices based on a slice unit. In step 142, the slice divider 60 allocates the image slices to the image encoder 70, i.e. the image encoding units.
  • Thereafter, in step 144, the moving picture encoding apparatus 50 encodes the image slices in parallel while controlling the encoding time point of each image slice. In this case, controlling the encoding time point of each image slice is performed by the synchronization controller 90, and encoding the image slices in parallel is performed by the image encoder 70.
  • When the image slices have been encoded, the bitstream generator 80 generates a bitstream through the use of the encoded image slices in step 146. In step 148, the moving picture encoding apparatus 50 outputs the generated bitstream.
  • FIG. 5 is a flowchart illustrating a moving picture decoding method for processing a moving picture divided in units of slices according to an exemplary embodiment.
  • In step 150, the slice divider 60 divides a bitstream, which is input to the moving picture decoding apparatus 100, into bitstream slices based on a slice unit. In step 152, the slice divider 60 allocates the bitstream slices to the image decoder 120, i.e. the image decoding units.
  • Thereafter, in step 154, the moving picture decoding apparatus 100 decodes the bitstream slices in parallel while controlling the decoding time point of each bitstream slice. In this case, controlling the decoding time point of each bitstream slice is performed by the synchronization controller 90, and decoding the bitstream slices in parallel is performed by the image decoder 120.
  • When the bitstream slices have been decoded, the image generator 130 generates an image through the use of the decoded bitstream slices in step 156. In step 158, the moving picture decoding apparatus 100 outputs the generated image through a display unit (not shown) provided in advance.
  • Therefore, according to the exemplary embodiments described above, a moving picture divided in units of slices can be processed.
  • FIG. 6 is a view illustrating a moving picture encoding order in image slices according to an exemplary embodiment.
  • FIG. 6 shows one frame of a moving picture. Referring to FIG. 6, one frame includes a first image slice 162, a second image slice 164, a third image slice 166, a fourth image slice 168, and a fifth image slice 170. In addition, each of image slices 162, 164, 166, 168, and 170 includes 20 macroblocks.
  • It is assumed that a first image encoding unit 70-1 encodes the first image slice 162, a second image encoding unit 70-2 encodes the second image slice 164, a third image encoding unit 70-3 encodes the third image slice 166, a fourth image encoding unit 70-4 encodes the fourth image slice 168, and a fifth image encoding unit 70-5 encodes the fifth image slice 170.
  • According to an exemplary embodiment, the first image encoding unit 70-1 encodes macroblocks included in the first image slice 162 in the order of “162-1(t1)”, “162-2(t2)”, “162-3(t3)”, “162-4(t4)”, “162-5(t5)”, “162-6(t6)”, “162-7(t7)”, “162-8(t8)”, . . . , “162-N(tN)”. Similarly, the second image encoding unit 70-2 encodes macroblocks included in the second image slice 164 in the order of “164-5(t5)”, “164-6(t6)”, “164-7(t7)”, “164-8(t8)”, “164-9(t9)”, “164-10(t10)”, “164-1(t11)”, “164-12(t12)”, “164-13(t13)”, . . . , “164-N(tN)”; the third image encoding unit 70-3 encodes the third image slice 166 in the order of “166-9(t9)”, “166-10(t10)”, “166-1(t11)”, “166-12(t12)”, “166-13(t13)”, “166-14(t14)”, “166-15(t15)”, “166-16(t16)”, . . . , “166-N(tN)”; the fourth image encoding unit 70-4 encodes the fourth image slice 168 in the order of “168-13(t13)”, “168-14(t14)”, “168-15(t15)”, “168-16(t16)”, “168-17(t17)”, “168-18(t18)”, “168-19(t19)”, “168-20(t20)”, . . . , “168-N(tN)”; and the fifth image encoding unit 70-5 encodes the fifth image slice 170 in the order of “170-17(t17)”, “170-18(t18)”, “170-19(t19)”, “170-20(t20)”, “170-21(t21)”, “170-22(t22)”, . . . , “170-N(tN)”. In the above description, each numeral expressed in parentheses represents an encoding time point of each corresponding macroblock. For example, macroblock 170-21 starts to be encoded at time point t21 by the fifth image encoding unit 70-5.
  • Referring to FIG. 6, the first image encoding unit 70-1 encodes macroblock 162-1(t1) first of all. Since macroblock 162-1(t1), which is a macroblock (hereinafter, referred to as an “adjacent macroblock”) adjacent to macroblock 162-2(t2), has already been encoded, the first image encoding unit 70-1 can make reference to macroblock 162-1(t1) when encoding macroblock 162-2(t2). Similarly, the first image encoding unit 70-1 encodes macroblock 162-3(t3) by making reference to macroblocks 162-1(t1) and 162-2(t2). Also, when macroblock 162-3(t3) has been encoded, the first image encoding unit 70-1 encodes macroblock 162-4(t4) by making reference to macroblocks 162-1(t1), 162-2(t2), and 162-3(t3), which correspond to adjacent macroblocks of macroblock 162-4(t4). Also, in the same manner, the first image encoding unit 70-1 encodes macroblock 162-5(t5) by making reference to macroblocks 162-3(t3) and 162-4(t4). Here, the range of adjacent macroblocks may be determined in such a manner that, for example, referring to FIG. 6, the adjacent macroblocks of macroblock 164-4 in the second image slice 164 correspond to macroblocks 162-1, 162-2, 162-3, 164-3, 164-5, 166-5, 166-6, and 166-7.
  • In addition, when adjacent macroblocks 162-2(t2) and 162-4(t4) of macroblock 164-5(t5) have been encoded, the second image encoding unit 70-2 can encode macroblock 164-5(t5). That is, a time point at which the first image encoding unit 70-1 encodes macroblock 162-5(t5) and a time point at which the second image encoding unit 70-2 encodes macroblock 164-5(t5) become equal to each other. In this case, the synchronization controller 90 controls the first image encoding unit 70-1 and the second image encoding unit 70-2 so that a time point at which the first image encoding unit 70-1 encodes macroblock 162-5(t5) can be equal to a time point at which the second image encoding unit 70-2 encodes macroblock 164-5(t5).
  • Similarly, when macroblocks 164-6(t6) and 164-8(t8) have been encoded, the third image encoding unit 70-3 can encode macroblock 166-9(t9). While the third image encoding unit 70-3 encodes macroblock 166-9(t9), the first image encoding unit 70-1 encodes macroblock 162-9(t9), and the second image encoding unit 70-2 encodes macroblock 164-9(t9).
  • As described above, the exemplary embodiments provide the moving picture encoding apparatus 50, which can process image slices allocated to each image encoding unit in such a manner as to encode a plurality of image slices at the same time. The method for allocating image slices and encoding macroblocks, as described above, can be applied even to the moving picture decoding apparatus 100 according to the exemplary embodiment. In addition, an image slice division scheme, an encoding order of macroblocks, and an encoding scheme thereof, which will be described later with reference to FIG. 7, can be applied to the moving picture decoding apparatus 100, too.
  • For example, a time point at which the second image decoding unit 120-2 decodes macroblock 164-9(t9) and a time point at which the third image decoding unit 120-3 decodes macroblock 166-9(t9) are equal to each other.
  • FIGS. 7 to 12 are views illustrating moving picture encoding orders in image slices according to other exemplary embodiments.
  • FIG. 7 shows a frame including five image slices 162, 164, 166, 168, and 170, as shown in FIG. 6. Referring to FIG. 7, the image encoder 70 encodes macroblocks, which are included in each image slice 162, 164, 166, 168, and 170, in a Z-shape along a horizontal direction within each corresponding image slice.
  • In FIG. 7, the first image encoding unit 70-1 encodes macroblock 162-11(t11) by making reference to macroblocks 162-9(t9) and 162-10(t10) at the same time as the second image encoding unit 70-2 encodes macroblock 164-11(t11) by making reference to pre-encoded macroblocks 162-7(t7), 162-8(t8), 164-9(t9), and 164-10(t10). Also, in this case, the third image encoding unit 70-3 encodes macroblock 166-11(t11) by making reference to pre-encoded macroblocks 164-7(t7), 164-8(t8), 166-9(t9), and 166-10(t10). In the same manner, the fourth image encoding unit 70-4 encodes macroblock 168-13(t13), which is included in the fourth image slice 168, through the use of macroblocks 166-11(t11) and 166-12(t12) included in the third image slice 166. In this case, it is assumed that one or more pre-encoded macroblocks have been stored in a memory (not shown) provided in advance in the moving picture encoding apparatus 50.
  • FIG. 8 is a view illustrating a frame including 10 image slices. Each image slice shown in FIG. 8 includes 10 macroblocks, differently from the image slices shown in FIGS. 6 and 7. According to the exemplary embodiment of FIG. 8, a macroblock can be encoded by making reference to at least one adjacent macroblock when the adjacent macroblock has been encoded in advance, similar to the cases of FIGS. 6 and 7.
  • For example, when macroblock 162-1 in a first image slice has been encoded, the first image encoding unit 70-1 can encode macroblock 162-2, which is an adjacent macroblock of macroblock 162-1. Also, when macroblocks 162-1 and 162-2 have been encoded, the first image encoding unit 70-1 can encode macroblock 162-3.
  • Referring to FIG. 8, when macroblocks 162-1 and 162-2 have been encoded, the synchronization controller 90 synchronizes the first image encoding unit 70-1 and the second image encoding unit 70-2 to encode macroblocks 162-3 and 164-3 at the same time. Also, when macroblocks 162-4 and 164-4 have been encoded by the first image encoding unit 70-1 and second image encoding unit 70-2, the synchronization controller 90 synchronizes the first image encoding unit 70-1, the second image encoding unit 70-2, and the third image encoding unit 70-3 to encode macroblocks 162-5, 164-5, and 166-5 at the same time.
  • The synchronization controller 90 controls a time point at which each image encoding unit encodes each macroblock in such a manner as described above, thereby controlling the image encoder 70, which includes a plurality of cores (not shown) and buffers (not shown), to efficiently encode an image divided in units of slices.
  • FIGS. 9 to 12 show cases where a frame having 10×10 macroblocks in the horizontal and vertical directions is divided into image slices in various manners. Referring to FIGS. 9 to 12, it can be understood that the encoding order of macroblocks included in image slices may vary depending on image division schemes.
  • Referring to FIG. 9, ten macroblocks in the vertical direction among 10×10 macroblocks correspond to a first image slice 162; nine macroblocks in the horizontal direction among the remaining macroblocks, except for the first image slice 162, correspond to a second image slice 164; and nine macroblocks in the vertical direction among the remaining macroblocks, except for the first image slice 162 and the second image slice 164, correspond to a third image slice 166. That is, one frame of an image input to the moving picture encoding apparatus 50 is divided in units of slices in alternating the vertical and horizontal directions.
  • Also, referring to FIG. 9, each image slice is encoded in such a manner that, after macroblock 162-1(t1) in the first image slice 162 has been encoded, macroblocks 162-2(t2) and 164-2(t2) are simultaneously encoded, macroblocks 162-3(t3), 164-3(t3), and 166-3(t3) are simultaneously encoded, and then macroblocks 162-4(t4), 164-4(t4), 166-4(t4), and 168-4(t4) are simultaneously encoded.
  • In the case of a frame shown in FIG. 10, after macroblock 162-1(t1) in a first image slice 162 is encoded first, macroblock 162-2(t2) in the first image slice 162, macroblock 164-2(t2) in a second image slice 164, and macroblock 166-2(t2) in a third image slice 166 are encoded. Thereafter, the synchronization controller 90 according to an exemplary embodiment controls the image encoder 70 to encode macroblock 162-3(t3) in the first image slice 162, macroblock 164-3(t3) in the second image slice 164, macroblock 166-3(t3) in the third image slice 166, and macroblock 168-3(t3) in a fourth image slice 168. The image encoder 70 encodes a plurality of image slices, which are included in a frame, in parallel in the aforementioned manner under the control of the synchronization controller 90.
  • FIGS. 11 and 12 illustrate encoding orders of image slices when one frame includes four image slices 162, 164, 166, and 168.
  • Referring to FIG. 11, first, macroblocks 162-1(t1), 162-2(t2), 162-3(t3), 162-4(t4), and 162-5(t5) in a first image slice 162 are encoded in regular sequence, and macroblocks 166-2(t2), 166-3(t3), 166-4(t4), 166-5(t5), and 166-6(t6) in a third image slice 166 are encoded in regular sequence. When macroblock 162-5(t5) in the first image slice 162 and macroblock 166-5(t5) in the third image slice 166 have been encoded, the second image encoding unit 70-2 can encode macroblock 164-6(t6) in a second image slice 164 by making reference to macroblock 162-5(t5). Also, when macroblock 164-6(t6) in the second image slice 164 has been encoded, the fourth image encoding unit 70-4 can encode macroblock 168-7(t7) in a fourth image slice by making reference to macroblock 162-5(t5), macroblock 164-6(t6), and macroblock 166-6(t6) in the third image slice 166, wherein macroblock 166-6(t6) is encoded at the same time as macroblock 164-6(t6).
  • Referring to FIG. 12, it can be understood that macroblock 162-1 of a first image slice 162 is positioned in the center of a frame. Accordingly, when macroblock 162-1(t1) is encoded by the first image encoding unit 70-1, it is possible to encode macroblock 164-2 of a second image slice and macroblock 166-2 of a third image slice, which correspond to adjacent macroblocks of macroblock 162-1. The moving picture encoding apparatus 50 according to an exemplary embodiment progresses the encoding in a direction from the center of the frame to the edge of the frame.
  • FIG. 13 is a view illustrating a case where the moving picture encoding apparatus 50 performs the encoding of macroblocks in a sequence progressing in the form of a spiral.
  • According to another exemplary embodiment shown in FIG. 13, a frame includes a first image slice 162, a second image slice 164, a third image slice 166, and a fourth image slice 168, wherein each image slice has the form of a spiral. According to the exemplary embodiment shown in FIG. 13, encoding is performed in such a manner that macroblocks 162-1(t1), 164-1(t1), 166-1(t1), and 168-1(t1) are encoded at the same time; macroblocks 162-2(t2), 164-2(t2), 166-2(t2), and 168-2(t2) are encoded at the same time; and then macroblocks 162-3(t3), 164-3(t3), 166-3(t3), and 168-3(t3) are encoded at the same time.
  • The image slice division methods as described above are just exemplary embodiments, and various modifications, additions and substitutions are possible to increase the encoding efficiency through the sharing of partial information between image slices. Therefore, the aspects of the exemplary embodiments are not limited to the aforementioned exemplary embodiments and accompanying drawings. In addition, it will be understood by those skilled in the art that, when macroblocks are encoded, the subjects of pre-encoded adjacent macroblocks may change in form and detail depending on image slice division schemes.

Claims (3)

What is claimed is:
1. A decoding method, the method comprising:
obtaining information related to a block from a bitstream;
dividing a frame into a plurality of blocks based on the information related to the block, the plurality of blocks comprising at least two rows;
obtaining decoding information by decoding a second block in a first row; and
decoding a third block in the first row and a first block in a second row using the decoding information,
wherein the decoding information includes motion estimation information.
2. The method of claim 1, wherein the third block in the first row and the first block in the second row are decoded in parallel.
3. The method of claim 1, wherein the information related to the block includes split information.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10390013B2 (en) * 2011-07-11 2019-08-20 Velos Media, Llc Method for encoding video

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4844449B2 (en) * 2006-04-17 2011-12-28 日本ビクター株式会社 Moving picture encoding apparatus, method, program, moving picture decoding apparatus, method, and program
CN101990104A (en) * 2010-11-17 2011-03-23 中兴通讯股份有限公司 Method and device for coding video images
KR101726274B1 (en) * 2011-02-21 2017-04-18 한국전자통신연구원 Method and apparatus for parallel entropy encoding/decoding
JP5939251B2 (en) * 2011-06-22 2016-06-22 日本電気株式会社 Moving picture coding method, moving picture coding apparatus, and program
US8958642B2 (en) 2011-10-19 2015-02-17 Electronics And Telecommunications Research Institute Method and device for image processing by image division
JP2013098735A (en) * 2011-10-31 2013-05-20 Canon Inc Image encoder, image encoding method and program, image decoder, and image decoding method and program
CN108337512B (en) 2011-12-29 2020-10-27 Lg 电子株式会社 Video encoding and decoding method and apparatus using the same
CN107734339B (en) 2012-02-04 2021-06-01 Lg 电子株式会社 Video encoding method, video decoding method, and apparatus using the same
US9743079B2 (en) * 2012-02-07 2017-08-22 Panasonic Intellectual Property Management Co., Ltd. Image processing apparatus and image processing method for the collective transfer of prediction parameters between storage units
JP5979406B2 (en) * 2012-02-22 2016-08-24 ソニー株式会社 Image processing apparatus, image processing method, and image processing system
CN102740075B (en) * 2012-06-05 2015-02-11 沙基昌 Video data compressing/decompressing method and system
CN103841426B (en) * 2012-10-08 2017-04-26 华为技术有限公司 Method and device for setting up motion vector list for motion vector predication
CN102883163B (en) 2012-10-08 2014-05-28 华为技术有限公司 Method and device for building motion vector lists for prediction of motion vectors
CN103841425B (en) * 2012-10-08 2017-04-05 华为技术有限公司 For the method for the motion vector list foundation of motion-vector prediction, device
CN103916668A (en) * 2013-01-04 2014-07-09 云联(北京)信息技术有限公司 Image processing method and system
US9554131B1 (en) * 2013-07-23 2017-01-24 Harmonic, Inc. Multi-slice/tile encoder with overlapping spatial sections
KR102331537B1 (en) * 2014-01-13 2021-11-26 한화테크윈 주식회사 Apparatus and method for decoding
US10499072B2 (en) * 2016-02-17 2019-12-03 Mimax, Inc. Macro cell display compression multi-head raster GPU
KR102604776B1 (en) 2017-07-19 2023-11-21 삼성전자주식회사 Encoding method and apparatus therefor, decoding method and apparatus therefor
CN111698501B (en) * 2019-03-11 2022-03-01 杭州海康威视数字技术股份有限公司 Decoding method and device

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5995727A (en) * 1994-07-29 1999-11-30 Discovision Associates Video decompression
US20040208381A1 (en) * 2003-01-30 2004-10-21 Canon Kabushiki Kaisha Compression into a fixed size buffer
US20040221143A1 (en) * 1992-06-30 2004-11-04 Wise Adrian P. Multistandard video decoder and decompression system for processing encoded bit streams including a standard-independent stage and methods relating thereto
US20050113169A1 (en) * 2002-05-16 2005-05-26 Microsoft Corporation Banning verbal communication to and from a selected party in a game playing system
US20050141608A1 (en) * 2003-12-31 2005-06-30 Samsung Electronics Co., Ltd. Pipeline-type operation method for a video processing apparatus and bit rate control method using the same
US20050169374A1 (en) * 2004-01-30 2005-08-04 Detlev Marpe Video frame encoding and decoding
US20050249291A1 (en) * 2004-05-07 2005-11-10 Stephen Gordon Method and system for generating a transform size syntax element for video decoding
US20060251330A1 (en) * 2003-05-20 2006-11-09 Peter Toth Hybrid video compression method
US20070257926A1 (en) * 2006-05-03 2007-11-08 Sutirtha Deb Hierarchical tiling of data for efficient data access in high performance video applications
US20080112489A1 (en) * 2006-11-09 2008-05-15 Calista Technologies System and method for effectively encoding and decoding electronic information
US20080123750A1 (en) * 2006-11-29 2008-05-29 Michael Bronstein Parallel deblocking filter for H.264 video codec
US20080144723A1 (en) * 2005-05-03 2008-06-19 Qualcomm Incorporated Rate control for multi-layer video design
US20080253461A1 (en) * 2007-04-13 2008-10-16 Apple Inc. Method and system for video encoding and decoding
US7468745B2 (en) * 2004-12-17 2008-12-23 Mitsubishi Electric Research Laboratories, Inc. Multiview video decomposition and encoding
US20100098155A1 (en) * 2008-10-17 2010-04-22 Mehmet Umut Demircin Parallel CABAC Decoding Using Entropy Slices
US20120140822A1 (en) * 2010-12-03 2012-06-07 Qualcomm Incorporated Video coding using function-based scan order for transform coefficients
US8311111B2 (en) * 2008-09-11 2012-11-13 Google Inc. System and method for decoding using parallel processing
US8823821B2 (en) * 2004-12-17 2014-09-02 Mitsubishi Electric Research Laboratories, Inc. Method and system for processing multiview videos for view synthesis using motion vector predictor list

Family Cites Families (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6079009A (en) * 1992-06-30 2000-06-20 Discovision Associates Coding standard token in a system compromising a plurality of pipeline stages
US6435737B1 (en) * 1992-06-30 2002-08-20 Discovision Associates Data pipeline system and data encoding method
US6330665B1 (en) * 1992-06-30 2001-12-11 Discovision Associates Video parser
JP3341781B2 (en) * 1992-12-15 2002-11-05 ソニー株式会社 Image decoding device and image encoding device
EP0700205A3 (en) * 1994-08-31 1997-04-02 Toshiba Kk Multimedia television receiver and method of booting the same
US6341144B1 (en) * 1996-09-20 2002-01-22 At&T Corp. Video coder providing implicit coefficient prediction and scan adaptation for image coding and intra coding of video
US6307975B1 (en) * 1996-11-05 2001-10-23 Sony Corporation Image coding technique employing shape and texture coding
US6008853A (en) * 1996-11-15 1999-12-28 Texas Instruments Incorporated Sub-frame decoder with area dependent update rate for digital camcorder transmission standard
US5920353A (en) * 1996-12-03 1999-07-06 St Microelectronics, Inc. Multi-standard decompression and/or compression device
JP3662129B2 (en) * 1997-11-11 2005-06-22 松下電器産業株式会社 Multimedia information editing device
JP2000032393A (en) * 1998-07-09 2000-01-28 Sony Corp Device and method for processing image information and providing medium
JP4427827B2 (en) * 1998-07-15 2010-03-10 ソニー株式会社 Data processing method, data processing apparatus, and recording medium
US6307487B1 (en) * 1998-09-23 2001-10-23 Digital Fountain, Inc. Information additive code generator and decoder for communication systems
AU6277199A (en) 1998-10-02 2000-04-26 General Instrument Corporation Method and apparatus for providing rate control in a video encoder
JP3694888B2 (en) * 1999-12-03 2005-09-14 ソニー株式会社 Decoding device and method, encoding device and method, information processing device and method, and recording medium
GB2362533A (en) * 2000-05-15 2001-11-21 Nokia Mobile Phones Ltd Encoding a video signal with an indicator of the type of error concealment used
US6614442B1 (en) * 2000-06-26 2003-09-02 S3 Graphics Co., Ltd. Macroblock tiling format for motion compensation
US6438168B2 (en) * 2000-06-27 2002-08-20 Bamboo Media Casting, Inc. Bandwidth scaling of a compressed video stream
US7068717B2 (en) * 2000-07-12 2006-06-27 Koninklijke Philips Electronics N.V. Method and apparatus for dynamic allocation of scalable selective enhanced fine granular encoded images
JP3561485B2 (en) * 2000-08-18 2004-09-02 株式会社メディアグルー Coded signal separation / synthesis device, difference coded signal generation device, coded signal separation / synthesis method, difference coded signal generation method, medium recording coded signal separation / synthesis program, and difference coded signal generation program recorded Medium
FI120125B (en) * 2000-08-21 2009-06-30 Nokia Corp Image Coding
US7177520B2 (en) * 2000-09-15 2007-02-13 Ibm Corporation System and method of timecode repair and synchronization in MPEG streams
US7636724B2 (en) * 2001-08-31 2009-12-22 Peerify Technologies LLC Data storage system and method by shredding and deshredding
CN101448162B (en) * 2001-12-17 2013-01-02 微软公司 Method for processing video image
US8401084B2 (en) * 2002-04-01 2013-03-19 Broadcom Corporation System and method for multi-row decoding of video with dependent rows
JP3807342B2 (en) * 2002-04-25 2006-08-09 三菱電機株式会社 Digital signal encoding apparatus, digital signal decoding apparatus, digital signal arithmetic encoding method, and digital signal arithmetic decoding method
JP3534742B1 (en) * 2002-10-03 2004-06-07 株式会社エヌ・ティ・ティ・ドコモ Moving picture decoding method, moving picture decoding apparatus, and moving picture decoding program
JP2006237656A (en) * 2003-02-28 2006-09-07 Secom Co Ltd Coded signal separating/merging device, generator and extracting device for difference coded signal, and method and program for separating/merging coded signal
US20050105621A1 (en) * 2003-11-04 2005-05-19 Ju Chi-Cheng Apparatus capable of performing both block-matching motion compensation and global motion compensation and method thereof
TWI236278B (en) * 2003-11-13 2005-07-11 Mediatek Inc Video bit stream decoding system and method used in a video decoding apparatus
US20050123038A1 (en) * 2003-12-08 2005-06-09 Canon Kabushiki Kaisha Moving image encoding apparatus and moving image encoding method, program, and storage medium
US8116379B2 (en) * 2004-10-08 2012-02-14 Stmicroelectronics, Inc. Method and apparatus for parallel processing of in-loop deblocking filter for H.264 video compression standard
US20060268989A1 (en) * 2005-05-27 2006-11-30 Matsushita Electric Industrial Co., Ltd. Bit stream generation method and bit stream generatation apparatus
JP4844449B2 (en) * 2006-04-17 2011-12-28 日本ビクター株式会社 Moving picture encoding apparatus, method, program, moving picture decoding apparatus, method, and program
JP4182442B2 (en) * 2006-04-27 2008-11-19 ソニー株式会社 Image data processing apparatus, image data processing method, image data processing method program, and recording medium storing image data processing method program
US8019002B2 (en) * 2006-06-08 2011-09-13 Qualcomm Incorporated Parallel batch decoding of video blocks
JP4607856B2 (en) * 2006-12-26 2011-01-05 富士通株式会社 Encoding / decoding system and encoding / decoding method
JP4254867B2 (en) * 2007-01-31 2009-04-15 ソニー株式会社 Information processing apparatus and method, program, and recording medium
JP4254866B2 (en) * 2007-01-31 2009-04-15 ソニー株式会社 Information processing apparatus and method, program, and recording medium
GB2447057A (en) * 2007-02-28 2008-09-03 Tandberg Television Asa Picture encoding type detection.
JP4917148B2 (en) * 2007-03-19 2012-04-18 富士通株式会社 Bitstream conversion method, bitstream conversion apparatus, bitstream combination apparatus, bitstream division program, bitstream conversion program, and bitstream combination program
KR100801630B1 (en) 2007-06-15 2008-02-05 디비코 주식회사 Distributed decoding processing device using multi-core processor and the method for the same
US8023562B2 (en) * 2007-09-07 2011-09-20 Vanguard Software Solutions, Inc. Real-time video coding/decoding
CN101137062A (en) * 2007-09-20 2008-03-05 四川长虹电器股份有限公司 Video coding system dual-core cooperation encoding method with dual-core processor
KR101454208B1 (en) * 2007-12-28 2014-10-24 삼성전자주식회사 Method and apparatus for encoding/decoding halftone image
CN101267564B (en) 2008-04-16 2011-06-15 中国科学院计算技术研究所 A multi-processor video coding chip device and method
US8275208B2 (en) * 2008-07-02 2012-09-25 Samsung Electronics Co., Ltd. Method and apparatus for encoding and decoding image using image separation based on bit location
TWI387317B (en) * 2008-12-11 2013-02-21 Novatek Microelectronics Corp Apparatus for reference picture resampling generation and method thereof and video decoding system
US20120014441A1 (en) * 2010-07-15 2012-01-19 Sharp Laboratories Of America, Inc. Parallel video coding based on boundaries

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040221143A1 (en) * 1992-06-30 2004-11-04 Wise Adrian P. Multistandard video decoder and decompression system for processing encoded bit streams including a standard-independent stage and methods relating thereto
US5995727A (en) * 1994-07-29 1999-11-30 Discovision Associates Video decompression
US20050113169A1 (en) * 2002-05-16 2005-05-26 Microsoft Corporation Banning verbal communication to and from a selected party in a game playing system
US20040208381A1 (en) * 2003-01-30 2004-10-21 Canon Kabushiki Kaisha Compression into a fixed size buffer
US20060251330A1 (en) * 2003-05-20 2006-11-09 Peter Toth Hybrid video compression method
US20050141608A1 (en) * 2003-12-31 2005-06-30 Samsung Electronics Co., Ltd. Pipeline-type operation method for a video processing apparatus and bit rate control method using the same
US20050169374A1 (en) * 2004-01-30 2005-08-04 Detlev Marpe Video frame encoding and decoding
US20050249291A1 (en) * 2004-05-07 2005-11-10 Stephen Gordon Method and system for generating a transform size syntax element for video decoding
US8823821B2 (en) * 2004-12-17 2014-09-02 Mitsubishi Electric Research Laboratories, Inc. Method and system for processing multiview videos for view synthesis using motion vector predictor list
US7468745B2 (en) * 2004-12-17 2008-12-23 Mitsubishi Electric Research Laboratories, Inc. Multiview video decomposition and encoding
US20080144723A1 (en) * 2005-05-03 2008-06-19 Qualcomm Incorporated Rate control for multi-layer video design
US20070257926A1 (en) * 2006-05-03 2007-11-08 Sutirtha Deb Hierarchical tiling of data for efficient data access in high performance video applications
US20080112489A1 (en) * 2006-11-09 2008-05-15 Calista Technologies System and method for effectively encoding and decoding electronic information
US20080123750A1 (en) * 2006-11-29 2008-05-29 Michael Bronstein Parallel deblocking filter for H.264 video codec
US20080253461A1 (en) * 2007-04-13 2008-10-16 Apple Inc. Method and system for video encoding and decoding
US8311111B2 (en) * 2008-09-11 2012-11-13 Google Inc. System and method for decoding using parallel processing
US20100098155A1 (en) * 2008-10-17 2010-04-22 Mehmet Umut Demircin Parallel CABAC Decoding Using Entropy Slices
US20120140822A1 (en) * 2010-12-03 2012-06-07 Qualcomm Incorporated Video coding using function-based scan order for transform coefficients

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Erik B. van der Tol - hereafter Van der Tol, "Mapping of H.264 decoding on a multiprocessor architecture", 2003. *
Van der Tol et al, "Mapping of H.264 decoding on a multiprocessor architecture”, 2003. *
Van der Tol et al, Mapping of H.264 decoding on a multiprocessor architecture, 2003 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10390013B2 (en) * 2011-07-11 2019-08-20 Velos Media, Llc Method for encoding video
US10812799B2 (en) 2011-07-11 2020-10-20 Velos Media, Llc Method for encoding video
US11451776B2 (en) 2011-07-11 2022-09-20 Velos Media, Llc Processing a video frame having slices and tiles
US11805253B2 (en) 2011-07-11 2023-10-31 Velos Media, Llc Processing a video frame having slices and tiles

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