Image predictive encoding device, image predictive encoding method, image predictive encoding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program

摘要

#$%^&*AU2019204853B220201105.pdf#####IMAGE PREDICTIVE ENCODING DEVICE, IMAGE PREDICTIVE ENCODING METHOD, IMAGE PREDICTIVE ENCODING PROGRAM, IMAGE PREDICTIVE DECODING DEVICE, IMAGE PREDICTIVE DECODING METHOD, AND IMAGE PREDICTIVE DECODING PROGRAM ABSTRACT An image predictive decoding method of an image predictive decoding device comprising: a data extraction step for extracting encoded data of partition information and encoded data of a residual signal from compressed data where an image is divided into a plurality of regions and encoded; a restoration step for restoring the partition information by decoding the encoded data of the partition information; a prediction signal production step for, when specifying that a target region is not divided from the restored partition information and prediction information attached to a neighbouring region is not used, producing a prediction signal of the target region from a reconstructed signal by using mode information specifying an inter-picture prediction, a reference picture number and a motion vector in the target region, and when specifying that the target region is not divided from the restored partition information and prediction information attached to a neighbouring region is used, specifying the neighbouring region out of a plurality of neighbouring regions neighbouring the target region, based on identification information included in the compressed data, to produce a prediction signal of the target region from a reconstructed signal by using mode information specifying an inter-picture prediction, a reference picture number and a motion vector in the specified neighbouring region. The method further comprises a step for restoring a reproduction residual signal of the target region from the encoded data of the residual signal; a reproduction signal production step for producing the reproduction signal of the target region based on the prediction signal of the target region and the reproduction residual signal; and a storage step for storing the reproduction signal of the target region as the reconstructed signal. 23019252