Title :
Incorporating Watson´s perceptual model into patchwork watermarking for digital images
Author :
Hu, Roland ; Chen, Fei ; Yu, Huimin
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
This paper presents a modified patchwork watermarking scheme for digital images by incorporating the Watson´s perceptual model into the watermarking process. Watermarking occurs in the DCT domain. Watson´s perceptual model provides a measure of distortions that each DCT coefficient can resist based on the human visual system (HVS). Perceptual information is incorporated into the watermarking scheme by minimizing the Watson´s distance between the host image and watermarked image using quadratic programming. Compared with patchwork schemes which do not consider perceptual models, experiments indicate that the proposed method has increased robustness and fidelity of the watermarking system.
Keywords :
discrete cosine transforms; quadratic programming; watermarking; DCT domain; Watson perceptual model; digital images; human visual system; patchwork watermarking; perceptual information; quadratic programming; Discrete cosine transforms; Indexes; Noise; Pixel; Quadratic programming; Robustness; Watermarking; human visual system; patchwork watermarking; perceptual models; quadratic programming;
Conference_Titel :
Image Processing (ICIP), 2010 17th IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-7992-4
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2010.5652638