Image Tamper Detection and Recovery by Intersecting Signatures
Chun-Hung; National Sun Yat-sen University Chen
Yuan-Liang; Chaoyang University of Technology Tang
Wen-Shyong; Shu-Te University Hsieh
Min-Shiang; Asia University Hwang
Telecommunication Computing Electronics and Control
Abstract
In this paper, we propose an exact image authentication scheme that can, in the best case, detect image tampering with the accuracy of one pixel. This method is based on constructing blocks in the image in such a manner that they intersect with one another in different directions. Such a technique is very useful to identify whether an individual image pixel has been tampered with. Moreover, the tampered region can be well recovered with the embedded recover data.
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