Patent ID: 8184708
Filing Date: 2012-05-22
Classification: H04N

Abstract:
1. A decoding device that decodes an encoding result obtained by predictive encoding, with motion vectors of adjacent blocks, motion vectors of blocks that have been obtained by allocating individual frames of moving picture data, the decoding device comprising: determining means for determining, using determination criteria, a precision of a predicted value of a motion vector of a target block, where the determination criteria includes a degree of disorder of motion vectors of multiple blocks in a vicinity of the target block; and predictive decoding means for decoding a predictive encoded motion vector of the target block by an entropy decoding method selected from among multiple entropy decoding methods based on the precision of the predicted value of the motion vector of the target block determined by the determining means, the selected entropy decoding method corresponding to an entropy encoding method selected from among multiple entropy encoding methods at the time of the predictive encoding and anticipated to achieve maximum reduction in amount of information of motion vector data obtained as the encoding result.