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。
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 redun- dant encoding algorithm based on error sensitivity for H. 264 is proposed. The proposed algorithm can determine er- ror 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 ob- jective quality of the decoded picture.
出处
《科学技术与工程》
北大核心
2013年第28期8479-8482,8491,共5页
Science Technology and Engineering
关键词
H
264
运动敏感区
错误敏感宏块
灵活宏块排序
FMO
冗余编码
H. 264 motion sensitive area error sensitive macro-block Flexible Macro-block 0rde-ring （FM0） redundant encoding
