Image Tamper Detection and Recovery by Intersecting Signatures

Chun-Hung Chen (National Sun Yat-sen University)
Yuan-Liang Tang (Chaoyang University of Technology)
Wen-Shyong Hsieh (Shu-Te University)
Min-Shiang Hwang (Asia University)

TELKOMNIKA (Telecommunication Computing Electronics and Control)
Vol 12, No 4: December 2014

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.