一种基于局部编解码的台标实时插入方法  

Real-Time Logo Insertion Method Based on Partial Recoding Algorithm

作　　者：卢斌[1,2] 孙军[1,2] 王兴东[1,2] 

机构地区：[1]上海交通大学电子工程系图像通信与信息处理研究所 [2]上海市数字媒体处理与传输重点实验室,上海200240

出　　处：《电视技术》2010年第9期29-32,共4页Video Engineering

基　　金：国家"863"计划项目(2008AA01A318)

摘　　要：提出了一种MPEG-2码流台标快速实时插入方法。该方法基于局部编解码算法,并做了相应的简化改进,以适应实时性需求。利用解码范围确定,简化宏块判断归类处理等方法,能够在现有的局部编解码台标插入方法的基础上进一步提高效率。该方法较传统全解全编方法,在视频质量上有所提高,并且能够达到对MPEG-2压缩码流的实时处理。A fast real-time logo insertion method for MPEG-2 video stream is presented in this paper. This method is based on the previous partial recoding algorithm, including some simplification and improvement for the requirement of real-time use. The existing partial recoding algorithm can be more efficient by reducing the recoding area and simplifying the processing of macroblocks. Comparing to the traditional full-region recoding algorithm, the proposed method gains better video quality and processing efficiency for the use of real-time MPEG-2 logo insertion.

关 键 词：MPEG-2标准 台标 实时 局部编解码 

分 类 号：TN391.41[电子电信—物理电子学]