ADAPTIVE FILTER GENERATING DEVICE, METHOD AND RECORDING MEDIUM FOR MOTION ESTIMATION/COMPENSATION

摘要

The present invention relates to an adaptive filter generating device, method and recording medium for motion estimation/compensation, which improve video data compression performance and give superior restored image quality for a given bit rate.The adaptive filter generating method for motion estimation/compensation according to one aspect of the present invention comprises: an optimum filter generation step involving the determination of filter factors for minimising error during current block pixel estimation, and involving the generation of optimum filters in block units based on the number of bits required to encode minimum error and previous-pixel motion vectors when using the filter factors; a representative filter generating step involving the concentration of the generated optimum filters based on the positioning of optimum filter factors which produced filter factor spaces, within the spaces, and involving the generation of representative filters for each of the concentrated filter factor spaces; and a representative filter number selecting step involving the selection of the total number of bits produced in specific encoding units and the number of the representative filters based on encoding error found in decoded images corresponding thereto.