Image tamper detection and recovery system based on discrete wavelet transformation

2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (IEEE Cat. No.01CH37233) Pub Date : 2001-08-26 DOI:10.1109/PACRIM.2001.953548

Kwang-Fu Li, Tung-Shou Chen, S. Wu

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引用次数: 40

Abstract

In this paper we propose an image tamper detection and recovery system based on the discrete wavelet transform (DWT) technique. When the system receives an image from a user input, this system will transform the image from its spatial domain to the frequency domain based on the DWT, and extract some information from the frequency domain as the eigenvalue of this image. Then, we hide this eigenvalue in the middle frequency band of the frequency domain as evidence for tamper detection in the future. When we doubt a protected image that may be tampered by other users, we can input this image into the tamper recovery system. If this image was tampered by other users, we can use the eigenvalue that was hidden in the image to recover this image. This system not only can recover the tampered area but there is also no need for the original image to ascertain if the image was tampered with or not, and no need for extra disk space to store extra information to recover the tampered area of the image.

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基于离散小波变换的图像篡改检测与恢复系统

提出了一种基于离散小波变换(DWT)技术的图像篡改检测与恢复系统。当系统接收到用户输入的图像时，基于DWT将图像从其空间域变换到频域，并从频域提取一些信息作为该图像的特征值。然后，我们将该特征值隐藏在频域的中频段，作为未来篡改检测的证据。当我们怀疑受保护的映像可能被其他用户篡改时，我们可以将该映像输入到篡改恢复系统中。如果该图像被其他用户篡改，我们可以使用隐藏在图像中的特征值来恢复该图像。该系统不仅可以恢复被篡改的区域，而且不需要原始图像来确定图像是否被篡改，也不需要额外的磁盘空间来存储额外的信息来恢复图像的篡改区域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (IEEE Cat. No.01CH37233)

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