视频转换编码的快速图标插入技术研究

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.

Research on fast transcoding technology for logo insertion

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.