White Papers
A Secure Image Authentication Algorithm With Pixel-Level Tamper Localization
Overview In this paper, the authors use a generalized model for all the previously proposed pixel-wise authentication schemes. Then they show how this model can be compromised with an oracle attack. This motivated the authors to develop a novel authentication scheme to be described in this paper. The new scheme is designed to detect any changes to a signal. It consists of two mechanisms dedicated to authenticity verification for a signal and localization of tampered pixels, respectively. The scheme is secure yet maintains the fine tamper localization capability of a pixel-wise scheme. Experimental results show that the proposed scheme has a good accuracy in locating tampered pixels.
| Publisher | Microsoft | File Format | |
|---|---|---|---|
| Date Published | October 2004 | ||
| Format | White Papers | ||
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