MOTION PICTURE ENCODING/DECODING APPARATUS, AND APPARATUS AND METHOD FOR ADAPTIVE OVERLAPPED BLOCK MOTION COMPENSATION BY VARIABLE UNIT FOR SAME

摘要

The present invention relates to a motion picture encoding/decoding apparatus, and apparatus and method for adaptive overlapped block motion compensation by a variable unit for same. The apparatus and the method for adaptive overlapped block motion compensation by a variable unit, according to the present invention, enable an encoder to perform an adaptive overlapped block motion compensation for a plurality of predetermined scan modes and sampling modes, and enable the encoder to calculate the computation volume occurring in said compensation and residual pixel energy, estimate the performance for each mode based on the calculation, determine an optimum scan mode and an optimum sampling mode, and perform a motion compensation, thus enabling a decoder to perform a motion compensation with optimum performance and less computing volume based on the determined mode.