[1]申金媛,胡青云,刘润杰,等.一种基于H.264压缩域的鲁棒性视频水印算法[J].郑州大学学报(工学版),2013,34(05):63-67.[doi:10.3969/j.issn.1671-6833.2013.05.014]
　SHEN Jin-yuan,HU Qing-yun,LIU Run-jie,et al.A Robust Video Watermarking Algorithm in H.264 Compressed Domain[J].Journal of Zhengzhou University (Engineering Science),2013,34(05):63-67.[doi:10.3969/j.issn.1671-6833.2013.05.014]
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一种基于H.264压缩域的鲁棒性视频水印算法()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34
期数:
2013年05期
页码:
63-67
栏目:
出版日期:
2013-09-10

文章信息/Info

Title:
A Robust Video Watermarking Algorithm in H.264 Compressed Domain
作者:
申金媛; 胡青云; 刘润杰; 等.
郑州大学信息工程学院,河南郑州,450001, 郑州大学信息工程学院,河南郑州,450001, 郑州大学信息工程学院,河南郑州,450001, 郑州大学信息工程学院,河南郑州,450001
Author(s):
SHEN Jin-yuan; HU Qing-yun; LIU Run-jie; ZHANG Wen-ying
School of Information Engineering,Zhengzhou University ,Zhengzhou 450001,China
关键词:
H.264;  视频水印;  量化系数;  盲检测
Keywords:
H.264;  video watermarking;  quantized coefficient;  blind detection
分类号:
TN919.81
DOI:
10.3969/j.issn.1671-6833.2013.05.014
摘要:
在现有视频水印算法的基础上,结合H.264编码标准的新特性,提出一种基于H.264压缩域的鲁棒性视频水印算法.利用子块的纹理复杂性,将14宏块中有较多非零量化系数的4×4子块作为嵌入区域,针对已有算法中比特率增加这一问题,该算法利用不同帧内预测模式下DCT系数的分布特点确定概率矩阵,据此通过改变子块的非零量化系数个数的奇偶性将水印嵌入到每个I帧亮度块量化后的DCT系数中.仿真结果表明,该算法对视频码率的影响较小,在保证视频水印的不可见性和鲁棒性的前提下,使得水印嵌入容量有了较大提高,同时该算法能够满足实时盲检测的要求.
Abstract:
A robust video watermarking algorithm in H.264 compressed-domain is proposed based on the newcharacteristics of H.264 coding standard. The 4 x4 blocks which have more nonzero quantized coefficients in4 macroblocks are chosen as embedding locations based on their texture complexity.To overcome the short-coming of the bit-rate increase in the existing algorithm,probability matrix is determined according to distribu-tion characteristics of DCT coefficients under the different intrapredicted models. The watermark is embeddedinto the quantized DCT coefficients of the luma components in I frames by changing the odevity of the numberof the nonzero quantized coefficients. The simulation results show that the proposed algorithm has little impacton the bit-rate of video, good invisibility and robustness. It can also increase watermarking embedding capaci-ty and meet the requirements of real-time blind detection.
更新日期/Last Update: 1900-01-01