VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, AND PROGRAMS THEREOF

摘要

The present invention relates to performing optimization of a region in which a method of interpolating fractional precision pixels is switched, and reducing residual energy of predictions between motion compensation screens by switching the interpolation method for each separated region. An image encoding device comprises: an encoding information acquiring unit that acquires encoding information for each block; a region classification unit that performs region classification in block units in response to the encoding information; a region separation redefinition processing unit that moves a region separation line in a horizontal direction, a vertical direction or both directions thereof, and determines the region separation line in which the density of the block belonging to the specified region classification is no less than a predetermined threshold value, on the basis of the results of the region classification; an interpolation method switching unit that switches the method of interpolating fractional precision pixels for each separation region separated by the region separation line; an interpolation performing unit that performs interpolation of fractional precision pixels in the separation region units; an image encoding unit that encodes an image using predictions between motion compensation screens of fractional precision pixels that are the subject of the interpolated image; and a region classification information encoding unit that encodes information relating to the region classification.