TY - CONF T1 - Image hashing resilient to geometric and filtering operations T2 - Multimedia Signal Processing, 2004 IEEE 6th Workshop on Y1 - 2004 A1 - Swaminathan,A. A1 - Mao,Yinian A1 - M. Wu KW - compact KW - cryptographic KW - cryptography; KW - discrete KW - distortion; KW - Filtering KW - Fourier KW - function; KW - geometric KW - hash KW - image KW - key KW - key; KW - operation; KW - polar KW - PROCESSING KW - public KW - representation; KW - theory; KW - transform; KW - transforms; AB - Image hash functions provide compact representations of images, which is useful for search and authentication applications. In this work, we have identified a general three step framework and proposed a new image hashing scheme that achieves a better overall performance than the existing approaches under various kinds of image processing distortions. By exploiting the properties of discrete polar Fourier transform and incorporating cryptographic keys, the proposed image hash is resilient to geometric and filtering operations, and is secure against guessing and forgery attacks. JA - Multimedia Signal Processing, 2004 IEEE 6th Workshop on M3 - 10.1109/MMSP.2004.1436566 ER -