In Wyner-Ziv video coding system, correct transimission and accurate decoding of key frames would affect the whole system performance directly. However, in wireless communication system, data loss of key frames often happened due to network failure, network congestion or other reasons. Data lossy seriously affect the decoding quality. This paper presents a novel solution for the data loss of key frames under the conditions of feedback channel. In the solution, by sending some extra Wyner-Ziv code streams along with the origin key frames, errors of the damaged image at the decoder can be high-efficiently corrected and restored. Simulation results show that the proposed solution could reconstruct the damaged image effectively, and the quality could be improved up to 20dB compared with typical error concealment method when the data loss ratio is 1%~20%. Furthermore, R-D performance of key frames could be improved even if the data loss ratio is very high.
引用本文格式： 刘晓娟,卿粼波,熊淑华,欧先锋. 一种新的Wyner-Ziv视频编码关键帧抗误码方案研究[J]. 四川大学学报: 自然科学版, 2016, 53: 98.复制