基于脆弱水印的H.264视频完整性认证方案

基于脆弱水印的H.264视频完整性认证方案

王美华1;裴庆祺2;范科峰3

(1. 北京信息工程学院，北京 100101;2. 西安电子科技大学计算机网络与信息安全教育部重点实验室，陕西西安 710071;3. 中国电子技术标准化研究所，北京 100007)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-10-20 发布日期:2007-10-25

Integrality authentication schema of H.264 video based on the fragile watermark

WANG Mei-hua1;PEI Qing-qi2;FAN Ke-feng3

(1. Beijing Information Technology Institute, Beijing 100101， China;2. Ministry of Edu. Key Lab. of Computer Network and Information Scurity, Xidian Univ., Xi′an 710071， China;3. China Electronics Standardization Institute, Beijing 100007， China)

Received:1900-01-01 Revised:1900-01-01 Online:2007-10-20 Published:2007-10-25

摘要/Abstract

摘要： 为了解决低码率视频完整性认证问题，提出了一种基于脆弱水印的视频认证方案．在H.264视频编码时，首先根据I帧DCT低频量化系数关系生成认证码，然后以水印的形式把认证码嵌入到I帧DCT高频量化系数中; 在视频解码阶段进行认证，水印提取不需要原视频作参考．仿真结果表明，所提出的方案具有较小的码率变化和视频失真，保证了方案的有效性．

关键词: 完整性认证, 视频认证, 脆弱水印, H.264

Abstract: In order to solve the problem of integrality authentication for low bit-rate video, a novel video authentication schema based on the fragile watermark is proposed. According to the relationship of the quantilzed DCT coefficients of the intra frame during the H.264 encoding progress, the authentication code is created. After that, the authentication information,as watermark is embedded into the high-frequency quantized DCT coefficients of the intra frame. The integrality authentication is carried out in the decode time and the original video is not needed for extracting the watermark. Experimental results show that this schema could maintain a small change in bit-rate and keep small distortion, which means the proposed schema is effective.

Key words: integrality authentication, video authentication, fragile watermark, H.264

中图分类号:

TN319

王美华1;裴庆祺2;范科峰3. 基于脆弱水印的H.264视频完整性认证方案
[J]. J4, 2007, 34(5): 823-827.

WANG Mei-hua1;PEI Qing-qi2;FAN Ke-feng3. Integrality authentication schema of H.264 video based on the fragile watermark
[J]. J4, 2007, 34(5): 823-827.

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