Patent ID: 8654856
Filing Date: 2014-02-18
Classification: H04N

Abstract:
1. A motion vector decoding device for decoding an encoding result obtained by entropy encoding motion vectors of respective blocks obtained by partitioning each frame of moving image data, by an entropy encoding method in which an information amount of encoded motion vectors becomes small among a plurality of entropy encoding methods, the motion vector decoding device comprising: predicting means for predicting a motion vector of a target block based on motion vectors of a plurality of decoded blocks adjacent to the target block; determining means for determining accuracy of a predicted value of the motion vector of the target block based on a difference absolute value between motion vectors of a plurality of blocks adjacent to the target block and used in predicting; and decoding means for decoding the motion vector of the target block by using a result of a prediction made by the predicting means with an entropy decoding method corresponding to the entropy encoding method selected in entropy encoding, based on the accuracy of the predicted value of the motion vector of the target block determined by the determining means.