华中科技大学学报（自然科学版）2011，Vol.39Issue(1)：6-10,5.
基于自适应冗余片嵌入的容错视频转码方法
Error-resilient video transcoding based on adaptive redundant slice insertion
摘要
Abstract
To improve the bitstream' s robustness during transmission, an error-resilient video transcoding scheme was proposed, which adaptively inserts redundant slice for the region-of-interkst (ROI) protection. An ROI extraction method was first presented based on both skin color and motion information. To avoid the unnecessary bit consumption, the insertion of redundant slice was determined by the rate-distortion performance of the ROI parts. The redundant slice was produced by the entropy coding and inserted into the bit stream if necessary, which doesn't involve the second-round encoding. Extensive experiments prove that the re-decoded video's subjective quality can be improved noticeably by the proposed scheme when transmitted with packet losses, which achieves good rate-distortion performance. Additionally, the proposed scheme was of low complexity, and the space need of picture storage was relatively small.关键词
视频转码/容错/冗余片/感兴趣区域/率失真Key words
video transcoding/ error-resilience/ redundant slice/ region-of-interest/ rate-distortion分类
信息技术与安全科学引用本文复制引用
周怡然,陈耀武..基于自适应冗余片嵌入的容错视频转码方法[J].华中科技大学学报（自然科学版）,2011,39(1):6-10,5.基金项目
浙江省重大科技攻关项目(2006C11200,2009C11035). （2006C11200,2009C11035）
