Depth map coding

摘要

Various implementations relate to depth map coding. In one method, a depth coding rate and depth distortion are determined for a coding mode. Based on the value of depth distortion, a correlation coefficient is determined between at least a portion of a video picture and a translated version of the video picture. The video picture is one or more of a video picture corresponding to the depth being coded, or a rendered video picture for a different view. A video distortion is determined based on the correlation coefficient, and is used to evaluate the coding mode. Another implementation determines a multiplier, to be used in a rate-distortion cost, based on pixel values from one or more of a video picture from a particular view or a rendered video picture for a different view.

主权项

1. A method comprising:
accessing a depth picture that has depth values for a video picture from a particular view, wherein the depth picture is capable of being used to render a video picture for a different view than the particular view to produce a rendered video picture; determining a depth coding rate that results from coding at least a portion of the depth picture using a particular coding mode; determining a value of depth distortion that results from coding at least the portion of the depth picture using the particular coding mode; determining, based on the value of depth distortion, a value for a correlation coefficient between at least a portion of a specific video picture and a translated version of the portion of the specific video picture, wherein the specific video picture is one or more of the video picture from the particular view or the rendered video picture; determining a value of video distortion, for one or more of at least a portion of the video picture from the particular view or at least a portion of the rendered video picture, based on the value for the correlation coefficient; and determining whether to use the particular coding mode to code at least the portion of the depth picture based on the value of video distortion and the depth coding rate.