Error detection based on MB types

作     者：FANG Yong JEONG JeChang WU ChengKe 

作者机构：National Key Lab on ISN Xidian University Xi'an 710071 China College of Electronics and Communications Engineering Hanyang University Seoul 133791 Korea 

出 版 物：《Science in China(Series F)》 (中国科学（F辑英文版）)

年 卷 期：2008年第51卷第4期

页      面：433-439页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

基　　金：the BK21 Foundation of Korea and the National Natural Science Foundation of China (Grant Nos. 60532060  60672117 and 60607010) 

主　　题：MPEG-4 video transmission error detection error concealment 

摘      要：This paper proposes a method of error detection based on macroblock （MB） types for video transmission. For decoded inter MBs, the absolute values of received residues are accumulated. At the same time, the intra textural complexity of the current MB is estimated by that of the motion compensated reference block. We compare the inter residue with the intra textural complexity. If the inter residue is larger than the intra textural complexity by a predefined threshold, the MB is considered to be erroneous and errors are concealed. For decoded intra MBs, the connective smoothness of the current MB with neighboring MBs is tested to find erroneous MBs. Simulation results show that the new method can remove those seriously-corrupted MBs efficiently. Combined with error concealment, the new method improves the recovered quality at the decoder by about 0.5--1 dB.