Title :
Fragile watermark based on polarity of pixel points
Author :
Kailasanathan, C.
Author_Institution :
Dept. of Comput. Sci., Wollongong Univ., NSW, Australia
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.
Keywords :
cryptography; data encapsulation; image coding; message authentication; watermarking; Yeung-Mintzer scheme; embedding process; fragile watermarking scheme; image authentication; image blocks; perceptual quality; pixel points polarity; polar set; security level; Authentication; Computer science; Computer security; Cryptography; Information analysis; Information security; Pixel; Proposals; Protection; Watermarking;
Conference_Titel :
Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the 3rd International Symposium on
Print_ISBN :
953-184-061-X
DOI :
10.1109/ISPA.2003.1296399
