Methods for decomposing compound documents for mixed raster content representation are provided. A method for decomposing an image includes the step of decomposing the image into a plurality of stripes. Each stripe is decomposed into foreground, background, and mask layers. The layers are interpolated...http://www.google.de/patents/US7027647?utm_source=gb-gplus-sharePatent US7027647 - Coder matched layer separation for compression of compound documents
