DYNAMIC IMAGE ENCODING DEVICE, DYNAMIC IMAGE ENCODING METHOD, DYNAMIC IMAGE ENCODING PROGRAM, DYNAMIC IMAGE DECODING DEVICE, DYNAMIC IMAGE DECODING METHOD, AND DYNAMIC IMAGE DECODING PROGRAM

摘要

When performing encoding or decoding by generating a reference image of a fractional pixel accuracy by using a filter for each of frames so as to perform motion compensation, it is possible to perform a highly accurate motion compensation even for an image having different characteristics in the horizontal and the vertical direction. A dynamic image encoding device (20) performs motion compensation by creating a reference image of a fractional pixel accuracy by using a filter for each of frame images for a dynamic image formed by a temporal sequence of frame images. The dynamic image encoding device (20) includes: a filter information accumulation unit (203) for accumulating filters used for encoding of the past frame images; a filter decision unit (202) which selects a filter to be used for encoding a current filter from filter candidates including the filters accumulated in the filter information accumulation unit (203); and a filter information encoding unit (205) which encodes information indicating the decided filter.