Title :
High capacity reversible image watermarking based on integer transform
Author :
Wang, Chao ; Li, Xiaolong ; Yang, Bin
Author_Institution :
Inst. of Comput. Sci. & Technol., Peking Univ., Beijing, China
Abstract :
Many reversible watermarking algorithms have been proposed in the literature, and all of these solutions put emphasis on high embedding capacity with low distortion. In this paper, a novel reversible image watermarking method based on integer transform is presented. Through taking pixel block of arbitrary size as embedding unit, the method can provide a very high embedding capacity. For instance, it can embed as large as 1.85 bits per pixel in “Lena”. Besides, by pre-estimating the embedding distortion, one can suitably select embeddable blocks so that the visual quality of the watermarked image is well guaranteed. Furthermore, extensive experiments show that the novel method performs better than some state-of-the-art algorithms.
Keywords :
image coding; transforms; watermarking; Lena; embeddable block; embedding capacity; embedding distortion; embedding unit; high capacity reversible image watermarking; integer transform; pixel block; visual quality; Binary sequences; Data mining; Gray-scale; PSNR; Pixel; Transforms; Watermarking; Reversible watermarking; integer transform;
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.2010.5652066