摘要: 提出一种应用于版权保护的压缩域视频水印算法。结合mpeg-2视频压缩过程,通过在特定位置插入不同游程的方法,实现游程编码过程的水印嵌入,在接收端可以直接从码流中提取水印,也可在游程解码过程中提取水印。实验结果表明,该算法计算复杂度低,实时性与现有视频处理设备兼容性好,且对视频质量影响小,具有良好的码率保持特性和抗再压缩能力。
关键词:
版权保护,
压缩域,
视频水印,
mpeg-2标准,
游程编码,
码流
Abstract: This paper proposes a compressed domain video watermark algorithm for copyright protection. Combined with mpeg-2 video compression process, the watermark is embed in by Run-length Encoding(RLE) embedding different run-length codes in particular position, and in the receiver, it can be extracted directly from stream, and can be extracted when decoding run-length code. The algorithm has characteristics of low complexity and good real-time, and can be used in existing video processing equipment. Experimental results show that the proposed algorithm has only a few impacts on the quality of the video, and it has the rate maintenance and the anti- compression ability.
Key words:
copyright protection,
compressed domain,
video watermark,
mpeg-2 standard,
Run-length Encoding(RLE),
code stream
中图分类号:
邢玲, 高宝建, 王玉洁, 郝露微. 一种用于版权保护的压缩域视频水印算法[J]. 计算机工程, 2013, 39(6): 194-199.
GENG Ling, GAO Bao-Jian, WANG Yu-Ji, HAO Lou-Wei. A Compressed Domain Video Watermark Algorithm for Copyright Protection[J]. Computer Engineering, 2013, 39(6): 194-199.