Memoryless Hash-Based Perceptual Image Authentication

摘要

It is well known that the rapid development of multimedia technologies has led to a huge growth of image editing tools. The popularity of image editing tools has further resulted in the growth of image illegal utilization. Unlike the traditional information authentication, perceptual image hashing approaches are recently proposed for content-based image authentication, which can distinguish maliciously altered images from the perceptually identical ones. However, these approaches need some other information to achieve the authentication, such as the hash codes of original images. Semi-fragile watermarking is also presented to deal with content-based authentication; however this approach focuses more on some specific aspect of robustness, for example JEPG compression. Hence, to avoid extra information storage and simultaneously achieve a global robustness against common image processing manipulations, this paper presents a memoryless hash-based perceptual image authentication algorithm using joint image hashing and watermarking method upon wave atom transform. Experimental results have demonstrated that the proposed algorithm possesses great robustness against common non-malicious manipulations and still keeps high sensitivity to malicious attacks. It can also provide perceptual image authentication successfully without any other information, even the hash codes of original images.