Publication Details

This article was originally published as: Kailasanathan, C, Fragile watermark based on polarity of pixel points, ISPA 2003. Proceedings of the 3rd International Symposium on Image and Signal Processing and Analysis, 18-20 September 2003, vol 2, 860-865. Copyright IEEE 2003.


A fragile watermarking scheme for authenticating images based on the Yeung-Mintzer scheme is proposed in this paper. This scheme does provide a better protection against all the attacks proposed for Yeung-Mintzer scheme. A polar set derived from the image blocks is used in the embedding process. The center pixel values of image blocks are perturbed by small quantities in such a way that the perceptual quality of the image is not modified. This paper also analyse the security level with respect to other attacks.