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With the rapid development of multimedia technology, how to establish the integrity of images has become an unavoidable problem. The transform between a digital image and its hard-copy makes the problem more complex. To simplify the content based authentication, we propose a print–scan resistant image hashing algorithm based on the Radon and wavelet transform. The Radon transforms an image to its...
An arbitrarily rotated image should not be recognized as a different one, but the conventional image perceptual hashing algorithms can only deal with this partially. Different to watermarking, image perceptual hashing does not need to embed information into the image content, this make it possible that perceptual hashing can treat the synchronization problem in a new manner. In this paper, three cyclic...
HVS (human visual system) has been widely used to evaluate image quality over the past three decades, which provided a good simulation on the image cognitive processing of human vision system. As a newly developing technology, perceptual hashing need to take the perception information into account during the feature extraction stage, and then code them into a short digest. In this paper, we present...
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