IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING PROGRAM, IMAGE DECODING PROGRAM, AND RECORDING MEDIUM

摘要

Provided are an image encoding device and an image decoding device that allow encoding with a low overall output size while preventing encoding-efficiency degradation in occlusion regions. When encoding a multiview image comprising a plurality of images from different perspectives, this image encoding device, using a reference image from a different perspective from a target image being encoded and a reference depth map for a subject in said reference image, encodes while performing image prediction across different perspectives. Said image encoding device is provided with the following: a combined-perspective-image generation unit that uses the aforementioned reference image and reference depth map to generate a combined-perspective image for the target image; a usability determination unit that, for each encoding region into which the target image has been partitioned, determines whether or not the aforementioned combined-perspective image is usable; and an image encoding unit that performs predictive encoding on the target image while selecting predicted-image generation methods for encoding regions for which the combined-perspective image was determined by the usability determination unit to be unusable.