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Journal of Electronic Imaging

Probability-based image authentication scheme for indexed color images
Author(s): Chun-Chin Lo; Yu-Chen Hu; Wu-Lin Chen; I-Cheng Chang
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Paper Abstract

A tamper detection method to protect the integrity of indexed color images is presented. This method generates authentication codes of the indices based on the pseudorandom number generator. The length of authentication codes can be adaptively chosen according to the user’s requirement. The authentication codes are embedded into the index table of the indexed color image. In the tamper detection procedure, the embedded authentication codes are extracted. Besides, the pseudorandom number generator with the specific random seed is used to generate another set of authentication codes. By means of comparing the two sets of authentication codes, the tampered areas of the indexed color images can be found. Experimental results show that the proposed method efficiently detects the tampered areas while keeping good image qualities of embedded images.

Paper Details

Date Published: 7 May 2014
PDF: 10 pages
J. Electron. Imag. 23(3) 033003 doi: 10.1117/1.JEI.23.3.033003
Published in: Journal of Electronic Imaging Volume 23, Issue 3
Show Author Affiliations
Chun-Chin Lo, Providence Univ. (Taiwan)
Yu-Chen Hu, Providence Univ. (Taiwan)
Wu-Lin Chen, Providence Univ. (Taiwan)
I-Cheng Chang, National Dong Hwa Univ. (Taiwan)

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