通信学报 ›› 2015, Vol. 36 ›› Issue (10): 110-118.doi: 10.11959/j.issn.1000-436x.2015180

• 学术论文 • 上一篇    下一篇

基于代价策略的H.264/AVC半脆弱水印算法

张维纬1,赵宸2,黄德天1,张沛3,杨义先3   

  1. 1 华侨大学 工学院,福建 泉州 362021
    2 国家计算机网络与信息安全管理中心,北京100031
    3 北京邮电大学 信息安全中心,北京100876
  • 出版日期:2015-10-25 发布日期:2015-10-27
  • 基金资助:
    华侨大学科研基金资助项目;泉州市科技计划基金资助项目;福建省自然科学基金资助项目;福建省科技厅专项基金资助项目

Semi-fragile video watermarking algorithm for H.264/AVC based on cost strategy

Wei-wei ZHANG1,Chen ZHAO2,De-tian HUANG1,Pei ZHANG3,Yi-xian YANG3   

  1. 1 College of Engineering,Huaqiao University,Quanzhou 362021,China
    2 National Computer Network and Information Security Management Center,Beijing 100031,China
    3 Information Security Center,Beijing University of Posts and Telecommunications,Beijing 100876,China
  • Online:2015-10-25 Published:2015-10-27
  • Supported by:
    The Research Foundation of Huaqiao University;The Science and Technology Development Founda-tion of Quanzhou City;The Natural Science Foundation of Fujian Province;The Special Foundation of Fujian Provincial Department of Science and Technology

摘要:

针对目前基于H.264/AVC标准的视频半脆弱水印算法存在的问题,提出一种基于代价策略的H.264/AVC半脆弱水印算法。通过消除基于内容的特征码之间的相关性,提高内容认证水印的顽健性。为实现半脆弱水印既能准确定位篡改区域,又对视频质量和码率的影响最小,引入了一个代价函数,通过该函数在残差4×4块的DCT系数中选择一个最佳的系数嵌入水印。实验表明,所提算法嵌入水印对视频质量和码率的影响较小,半脆弱水印对恶意篡改的图像区域能有效、准确地检测和定位。

关键词: 半脆弱水印, 代价函数, H.264/AVC, 篡改定位, 顽健性

Abstract:

In order to solve some existing problems on detecting malicious tampering by video watermarking based on H.264/AVC video compression standard,a semi-fragile video watermarking algorithm for H.264/AVC based on cost strategy was proposed.To further improve the robustness of the feature codes in semi-fragile video watermarking algorithm,a new generation algorithm for feature codes by eliminating the correlation of them was proposed.In order to meet the requirement that the semi-fragile watermarks should be uniformly embedded into the video frames to locate the tampered region accurately,a minimal cost function was introduced to select a DCT coefficient in the 4 × 4 block residual to embed watermark which had minimal impact on the video quality and bit rates.Experimental results show that the proposed algorithm can significantly reduce impact on video quality and bit rate because of embedding the watermarking by adopting the minimum cost function and it is sensitive to malicious manipulations.The retrieved feature code and watermarking can detect and locate malicious manipulations.

Key words: semi-fragile watermarking, cost strategy, H.264/AVC, tamper localization, robustness

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