Abstract
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.
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.