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一种基于傅立叶变换的运动图像全盲认证方法

方 勇， 张 瑾   

  1. 上海大学 通信与信息工程学院 上海 200072
  • 收稿日期:2006-06-12 修回日期:2007-01-04 出版日期:2007-05-31 发布日期:2007-05-31

A Blind Image Authentication Algorithm Based on Fourier Transform

FANG Yong, ZHANG Jin   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
  • Received:2006-06-12 Revised:2007-01-04 Online:2007-05-31 Published:2007-05-31

摘要： 本文利用运动图像傅立叶变换幅度谱的带状调制特性，提出一种针对运动图像的全盲认证方法，实现了对运动图像经过修改、移动、区域填充以及非运动图像上填充运动图像块两种情况下的篡改区域检测与定位。实验验证了其有效性及对噪声的鲁棒性。

关键词: 傅立叶变换, 运动图像, 盲图像认证

Abstract: In this paper, a new blind image authentication method is proposed based on the strip-shaped characteristics in Fourier spectrum of motion pictures. The algorithm implements image authentication and tampering localization for both motion pictures with malicious manipulations and non-motion pictures with motion-picture blocks. Simulation results show effectiveness and robustness of the proposed method.

Key words: Fourier transform, motion pictures, blind image authentication