视频转换编码的快速图标插入技术研究  

Research on fast transcoding technology for logo insertion

作　　者：刘昱[1] 李桂苓[1] 郭映[1] 王立[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《电路与系统学报》2005年第1期53-57,共5页Journal of Circuits and Systems

基　　金：天津自然科学基金资助项目(033600511);天津大学教学振兴计划资助

摘　　要：数字视频转换编码技术为传输带宽匹配等问题提供解决方案,在许多具体应用中,要求在转换编码时在视频图像中加入图形标识,本文对转换编码中图标插入技术进行了分析和研究,给出了一种快速图标插入转换编码技术,提出了图标插入后运动矢量及宏块模式判别等问题的优化算法,实验结果表明,使用本算法进行图标插入的转换编码流质量良好。Video transcoding techniques offer a way to adopt coded video to different application environments, such as matching bit-rate with bandwidth of transmitting channels. In many applications, patterns need be inserted into the coded bit-stream. In this paper, transcoding architecture for pattern insertion is investigated and a fast technique is proposed. This paper also addressed the problems of Motion Vector (MV) optimization and Macro Block (MB) type re-selection induced by pattern insertion. Methods are suggested to solve these matters. According to test results, the proposed approach added a good quality pattern into video stream with high efficiency.

关 键 词：转换编码 图标插入 

分 类 号：TN919.8[电子电信—通信与信息系统]