Multi-view image encoding method, multi-view image decoding method, multi-view image encoding device, and multi-view image decoding device

Abstract

In the disclosed multi-view image encoding / decoding method in which a frame to be encoded / decoded is divided and encoding / decoding is done to each region, first, a prediction image is generated not only for the region to be processed, but also for the already encoded / decoded regions neighboring to the region to be processed. The prediction image is generated using the same prediction method for both kinds of regions. Next, correction parameters for correcting illumination and color mismatches are estimated from the prediction image and decoded image of the neighboring regions. At this time, the estimated correction parameters can be obtained even at the decoding side, therefore, encoding them is unnecessary. Thus, by using the estimated correction parameters to correct the predicted image that was generated for the region to be processed, a corrected predicted image that can be actually used is generated.

Description

technical field [0001] The present invention relates to a multi-viewpoint image encoding method and device for encoding an image of a certain subject captured by a plurality of cameras, and a multi-viewpoint image for decoding code data encoded by the multi-viewpoint image encoding method A decoding method and device thereof, a multi-viewpoint image coding program for realizing the multi-viewpoint image coding method, and a multi-viewpoint image decoding program for realizing the multi-viewpoint image decoding method. [0002] This application claims priority based on Japanese Patent Application No. 2009-29249 for which it applied in Japan on February 12, 2009, and uses the content here. Background technique [0003] A multi-viewpoint image refers to a plurality of images captured by multiple cameras on the same subject and background, and a multi-viewpoint moving image (multi-viewpoint video) is a moving image thereof. [0004] Motion compensation prediction and parallax c...

AI Technical Summary

Problems solved by technology

[0009] In parallax compensation prediction and view synthesis prediction, when there are individual differences in the response of the imaging elements of the cameras, or when gain control and gamma correction are performed for each camera, or subject depth, aperture, etc. for each camera Coding efficiency degrades when the settings of different settings are different, or when there are direction-dependent lighting effects in the scene

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