Title :
Fragile watermarking with quality control for binary images
Author :
Zhang, Chun-e ; Qiu, Zheng-Ding
Author_Institution :
Inst. of Inf. Sci., Beijing Jiaotong Univ, China
Abstract :
An improved and fragile watermarking scheme with quality control for binary images is proposed in this paper. In this paper, a secret key and a weight matrix are used to protect the hidden data. For an m×n block, our scheme can embed as high as └log 2(mn+1)┘ bits of data at a cost of two pixels being flipped. Pixel flippability guides the whole scheme to control the watermarked image quality. A new measure is proposed to evaluate binary image quality. Shuffling is also adopted to improve the watermarking capacity and at the same time make the scheme more secure.
Keywords :
image coding; watermarking; binary image quality control; fragile watermarking; pixel flippability; secret key; watermarked image quality control; weight matrix; Contracts; Costs; Credit cards; Digital images; Image quality; Information science; Pixel; Protection; Quality control; Watermarking; Quality control; binary image; pixel flippability; watermarking; weight matrix;
Conference_Titel :
Machine Learning and Cybernetics, 2005. Proceedings of 2005 International Conference on
Conference_Location :
Guangzhou, China
Print_ISBN :
0-7803-9091-1
DOI :
10.1109/ICMLC.2005.1527815
