Abstract
Robust hash functions for visual data need a feature extraction mechanism to rely on. We experimentally compare spatial and transform domain feature extraction techniques and identify the global DCT combined with the cryptographic hash function MD-5 to be suited for visual hashing. This scheme offers robustness against JPEG2000 and JPEG compression and qualitative sensitivity to intentional global and local image alterations.
This work has been partially supported by the Austrian Science Fund FWF, project no. P15170.
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Skrepth, C.J., Uhl, A. (2003). Robust Hash Functions for Visual Data: An Experimental Comparison. In: Perales, F.J., Campilho, A.J.C., de la Blanca, N.P., Sanfeliu, A. (eds) Pattern Recognition and Image Analysis. IbPRIA 2003. Lecture Notes in Computer Science, vol 2652. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-44871-6_114
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DOI: https://doi.org/10.1007/978-3-540-44871-6_114
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