计算机应用 ›› 2011, Vol. 31 ›› Issue (04): 960-962.DOI: 10.3724/SP.J.1087.2011.00960

• 信息安全 • 上一篇    下一篇

基于运动矢量相位角和卷积码的大容量视频隐写算法

杨鹏1,魏立线2,3,杨晓元2,4   

  1. 1. 武警工程学院 电子技术系, 西安 710086
    2. 武警工程学院 电子技术系,西安 710086
    3. 武警工程学院 网络与信息安全研究所,西安 710086
    4. 西安电子科技大学 网络信息安全教育部重点实验室,西安 710071
  • 收稿日期:2010-10-20 修回日期:2010-11-25 发布日期:2011-04-08 出版日期:2011-04-01
  • 通讯作者: 杨鹏
  • 作者简介:杨鹏(1985-),男,湖北仙桃人,硕士研究生,主要研究方向:信息隐藏;
    魏立线(1966-),男,陕西户县人,教授,主要研究方向:信息安全;
    杨晓元(1959-),男,湖南湘潭人,教授,主要研究方向:信息安全、密码学。
  • 基金资助:
    国家自然科学基金资助项目(60842006);武警工程学院基础基金研究项目(wjy201027)

Big-capacity video steganography based on motion vector phase and convolutional code

Peng YANG1,Li-xian WEI1,2,Xiao-yuan YANG1,3   

  1. 1. Department of Electronic Technology, Engineering College of Armed Police Force, Xi'an Shaanxi 710086, China
    2. Institute of Network and Information Security, Engineering College of Armed Police Force, Xi'an Shaanxi 710086, China
    3. Key Laboratory of Network and Information Security of the Ministry of Education, Xidian University, Xi'an Shaanxi 710071, China
  • Received:2010-10-20 Revised:2010-11-25 Online:2011-04-08 Published:2011-04-01
  • Contact: Peng YANG

摘要: 为提高视频隐写中秘密信息的嵌入容量,提出一种基于运动矢量相位角和卷积码的大容量视频隐写算法。通过研究视频流中每一个帧组里的P帧和B帧上的运动信息,将秘密信息经过交织变换,用相位角的值表示不同的数字序列并作为卷积码的基本生成矩阵,使用卷积码来嵌入秘密信息。实验表明,该算法具有嵌入容量大、不可见性好和稳健性强等特点,在保持良好视频质量的前提下,可以达到视频隐写中大容量嵌入的目的。

关键词: 运动矢量相位角, 交织变换, 卷积码, 大容量, 视频隐写

Abstract: In order to increase the capacity of secret information in video steganography, a big-capacity video steganography algorithm was proposed based on motion vector phase and convolutional code. By studying the moving information of P frame and B frame in every Group of Pictures (GOP), the interlace switch was used to trade with the secret information at first, and then the different size of motion vector phase was used to represent different information to denote the basic generator matrix and the convolutional code was used to insert secret information. The experimental results show that the proposed algorithm not only has a big capacity of insert information, but also has a good imperceptibility and great robustness for secret information. It can achieve high capacity in video steganogrphy and maintain good video quality as well.

Key words: motion vector phase, interlace switch, convolutional code, big capacity, video steganogrphy

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