【摘要】 针对视频图像传输中数据丢失和误码而导致的图像质量下降问题,结合灵活宏块排序(FMO)技术和冗余编码的优缺点,提出了一种基于错误敏感度的H.264冗余片编码算法。该算法首先确定运动敏感区域中的错误敏感宏块,然后利用FMO自定义模式进行冗余编码。仿真测试结果表明,该算法能够有效提高视频码流的抗误码能力,重构图像的主观和客观质量有明显提高。更多还原

【Abstract】 Aiming at the decline of quality caused by data loss and error in video image transmission,combined with the characteristics of the Flexible Macro-block Ordering(FMO) technology and redundant coding,a redundant encoding algorithm based on error sensitivity for H. 264 is proposed. The proposed algorithm can determine error sensitive macro-block within motion sensitive area firstly before coding,then carries out redundant slices coding by adopting a dynamic Flexible Macro-block Ordering. The simulation results show that the proposed algorithm can enhance the error resilience ability of the video stream,at the same time effectively improve both subjective and objective quality of the decoded picture.更多还原