【摘要】 针对误码信道和信源编码的统计特性,提出了一种基于AVS视频序列的联合编码技术,按照重要性对AVS视频层序列码流进行分组重排,信道编码器根据码流信息对其进行比重不等的保护措施,以较低复杂度的运算实现了码率的优化分配。实验表明,与现有的等差错保护相比,在高误码信道中能有效提高AVS码流抗误码性能。更多还原

【Abstract】 According to the statistical characteristic of error channel and source coding, a new UEP method of source and channel joint coding for AVS video is proposed in this paper. This method divides AVS video information into groups and realigns them by their importance. The channel encoder protects unequally the information coming from the source encoder to minimize the complexity and optimize code rate. Compared to EEP, simulation results show that the performance of this method is better than that of EEP in channels with high error rate.更多还原