Error concealment in pixel based Wyner-Ziv video coding  

作　　者：Yuan Chengzong Han Chuanzhao Wang Yan Zhang Ning Zhang Zhen Zhu Xinzhong Li Xian Qu Di 袁承宗;Han Chuanzhao;Wang Yan;Zhang Ning;Zhang Zhen;Zhu Xinzhong;Li Xian;Qu Di(Key Laboratory of Ministry of Education and Ministry of Health Shanghai Medical College,Fudan University,Shanghai 200032,P.R.China;China Academy of Space Technology,Beijing 100094,P.R.China;Shanghai Aerospace Elecetronic Technology Institute,Shanghai 201109,P.R.China)

机构地区：[1]Key Laboratory of Ministry of Education and Ministry of Health Shanghai Medical College,Fudan University,Shanghai 200032,P.R.China [2]China Academy of Space Technology,Beijing 100094,P.R.China [3]Shanghai Aerospace Elecetronic Technology Institute,Shanghai 201109,P.R.China

出　　处：《High Technology Letters》2019年第3期340-346,共7页高技术通讯（英文版）

基　　金：Supported by the National Science and Technology Major Project of China(No.2018ZX10734401-004)

摘　　要：In the Wyner-Ziv(WZ) video coding paradigm, a virtual correlation channel is assumed between the quantized source and the side information(SI) at the decoder, and channel coding is applied to achieve compression. In this paper, errors caused by the virtual correlation channel are addressed and an error concealment approach is proposed for pixel-based WZ video coding. In the approach, errors after decoding are classified into two types. Type 1 errors are caused by residual bit errors after channel decoding, while type 2 errors are due to low quality of SI in part of a frame which causes SI not lying within the quantization bin of a decoded quantized pixel value. Two separate strategies are respectively designed to detect and conceal the two types of errors. Simulations are carried out and results are presented to demonstrate the effectiveness of the proposed approach.In the Wyner-Ziv(WZ) video coding paradigm, a virtual correlation channel is assumed between the quantized source and the side information(SI) at the decoder, and channel coding is applied to achieve compression. In this paper, errors caused by the virtual correlation channel are addressed and an error concealment approach is proposed for pixel-based WZ video coding. In the approach, errors after decoding are classified into two types. Type 1 errors are caused by residual bit errors after channel decoding, while type 2 errors are due to low quality of SI in part of a frame which causes SI not lying within the quantization bin of a decoded quantized pixel value. Two separate strategies are respectively designed to detect and conceal the two types of errors. Simulations are carried out and results are presented to demonstrate the effectiveness of the proposed approach.

关 键 词：Wyner-Ziv(WZ) video coding error detection error concealment side information(SI) 

分 类 号：N[自然科学总论]