利用视频与深度图相关性的深度图帧内编码

doi:10.3969/j.issn.1001-2400.2015.03.001

Abstract

Abstract:

Since the coding efficiency of the depth macro-block (MB) that contains the edge by using the existing intra coding method is low,an edge skip intra coding method based on the correlation between video and depth maps is proposed.In this method,the segmentation information of the current depth MB and its reference samples is derived from the corresponding video regions by clustering.With the segmentation information,the reference samples are mapped to the current MB as predicted samples.In order to remove the disturbance to the segmentation information caused by the noise point and burr from the clustering operation,a refinement operation is proposed by bi-direction scanning.With the proposed method,the complex edge of an edge MB,even a total edge MB,is skipped without coding.Experimental results demonstrate that compared with the original coding algorithm,the proposed method can reduce the coding bit-rate by 24.25％ and increase the peak signal-to-noise ratio (PSNR) by 0.70dB on average.Besides,the subjective coding quality is also improved obviously.

Key words: depth map coding, intra coding, intra skip coding

CLC Number:

TN919.73

MA Xiang;HUO Junyan;REN Guangliang;YANG Xu;CHANG Yilin. Depth map intra coding based on correlation between video and depth maps[J].J4, 2015, 42(3): 1-7.

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Depth map intra coding based on correlation between video and depth maps

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