Patent ID: 8213514
Filing Date: 2012-07-03
Classification: H04N

Abstract:
1. An Apparatus for encoding a video signal representing at least one video frame, with the at least one video frame being composed of picture samples, the picture samples belonging either to a first or a second field being captured at different time instants, the video frame being spatially divided up into macroblock pair regions, each macroblock pair region being associated with a top and a bottom macroblock, the apparatus comprising means for deciding, for each macroblock pair region, as to whether the respective macroblock pair region is of a frame coded or a field coded distribution type; means for assigning, for each macroblock pair region, each of the pixel samples in the respective macroblock pair region to a respective one of the top and bottom macroblocks of the respective macroblock pair region, in accordance with the distribution type of the respective macroblock pair region; means for pre-coding the video signal into a pre-coded video signal, including motion prediction of the current macroblock in units of partitions thereof to obtain, for each macroblock, a predetermined syntax element specifying, for a predetermined one of the partitions of the respective macroblock, an index of a reference picture; means for determining, for the syntax element of a current macroblock associated with a current macroblock pair region of the macroblock pair region, means for assigning one of at least two context models to the current syntax element of the current macroblock based on a pre-determined attribute of the neighboring macroblock to the left of the current macroblock and the neighboring macroblock to the top of the current macroblock, wherein each context model is associated with a different probability estimation; and means for arithmetically encoding the syntax element of the current macroblock into a coded bit stream based on the probability estimation with which the assigned context model is associated.