Secure image hashing VIA minimum distortion estimation

Authors:
Chao-Yung Hsu;Chun-Shien Lu;Soo-Chang Pei
Affiliations:
Graduate Institute of Communication Eng., National Taiwan University, Taipei, Taiwan, ROC and Institute of Information Science, Academia Sinica, Taipei, Taiwan, ROC;Institute of Information Science, Academia Sinica, Taipei, Taiwan, ROC;Graduate Institute of Communication Eng., National Taiwan University, Taipei, Taiwan, ROC
Venue:
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Year:
2009

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Abstract

Security is still a relatively unexplored issue in image hashing. In this paper, we address this problem and present a new metric, called minimum distortion estimation (MDE), by demonstrating its appropriateness over entropy for secure hashing evaluation. We investigate the relationship between bit changing rate and content distortion via statistical analyses of MDE. This provides a guideline for our design of a new secure image hashing method. The feasibility of our method is further demonstrated via comparisons with two known image hashing methods.