Patent ID: 6192077
Filing Date: 2001-02-20
Classification: H04N

Abstract:
A coding apparatus with motion compensation comprising:a unifier to unify a plurality of motion vectors corresponding to motion of portions of a picture to obtain a first motion vector group arranged in two-dimensional block;an arrangement converter to convert motion vectors in the first motion vector group from the two-dimensional block into predetermined one-dimension by scanning to obtain a second motion vector group arranged in the one-dimension;a vector predictor to predict a motion vector value in the second motion vector group from at least another motion vector value which has already been predicted in the second motion vector group in the order of the motion vectors converted into the one-dimension to obtain a motion vector predictive residue;an encoder to encode the motion vector predictive residue with variable-length codes including zero run length codes to obtain a bitstream per motion vector group; andwherein the arrangement converter performs arrangement conversion with a scanning pattern that is selected among a plurality of scanning patterns so as to have the least code amount in variable-length coding by the encoder.