A method of determining a quality value for an image frame is disclosed. The method comprises dividing (in a step 202) the frame into a plurality of tiles (906) and determining attributes (in a step 206) of each said tile based upon pixel values of the tile, and pixel values of a corresponding tile of...http://www.google.de/patents/US20050286802?utm_source=gb-gplus-sharePatent US20050286802 - Method for detecting and selecting good quality image frames from video
