MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE ENCODING METHOD, MOVING IMAGE DECODING METHOD, MOVING IMAGE ENCODING PROGRAM, MOVING IMAGE DECODING PROGRAM, MOVING IMAGE PROCESSING SYSTEM AND MOVING IMAGE PROCESSING METHOD

摘要

The present invention provides a moving image encoding device and a moving image decoding device that can improve efficiency of motion vector prediction and improve encoding efficiency of a difference motion vector even when a block serving as a candidate of motion vector prediction does not have significant motion information.;In a moving image encoding device 100, a motion vector predictor 114 selects one region from already encoded regions stored in a frame memory 104, when, for example, the selected region does not have a reference frame number, searches for a region having a high correlation with a template region composed of already reproduced pixel signals from a reference image specified with a reference frame number associated with a target region, and produces a prediction motion vector based on the spatial positional relationship between the searched region and the target region. By using the prediction motion vector, a difference motion vector can be calculated.