Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (1): 90-96.doi: 10.3969/j.issn.1000-565X.2014.01.016

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Intra- Frame Coding of Depth Maps to Ｒestrain Coding Error Pervasion

Yang Xu Li Bing- bing Ma Xiang Chang Yi- lin   

  1. State Key Laboratory of Integrated Services Networks,Xidian University,Xi'an 710071,Shaanxi,China
  • Received:2013-05-16 Revised:2013-10-14 Online:2014-01-25 Published:2013-12-01
  • Contact: 杨旭(1984-)，女，博士，主要从事三维视频编码研究． E-mail:xuyang@mail.xidian.edu.cn
  • About author:杨旭(1984-)，女，博士，主要从事三维视频编码研究．
  • Supported by:

    国家自然科学基金资助项目(60902081， 61001205);高等学校学科创新引智计划项目(B08038);西安电子科技大学中央高校基本科研业务费专项资金资助项目(72105457， 72115612， K5051301020， K5051301027)

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Abstract:

In order to improve the coding quality of depth maps and the virtual synthesis quality of 3D videos,anintra- frame coding method to restrain the coding error pervasion is proposed.In this method,the depth map is firstlysegmented into a flat region and an edge region according to the features of depth maps.Then,the distortion perva-sion properties in the two regions are analyzed,based on which the blocks or sub- blocks that cause the distortionpervasion are corrected by using a correction value during the rate- distortion optimization of macro blocks.Thus,alarge number of following blocks or sub- blocks influenced by the distortion pervasion may possess a smaller value ofrate- distortion cost function.Experimental results indicate that,as compared with the intra- coding method presentedby JMVC 8.5 and the intra- frame predication method based on segmentation,the proposed coding method improvesthe average peak signal- to- noise ratio of the virtual synthesis view by 0.30 and 0.25 dB,respectively.

Key words: coding error, 3D video, depth nap, intra- frame coding, error pervasion, warping error

CLC Number: