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In this paper, we propose an associative watermarking scheme which is conducted by the concept of Association Mining Rules (AMRs) and the ideas of Vector Quantization (VQ) and Soble operator. Performing associative watermarking rules to the images will reduct the amount of the embedded data, and using VQ indexing scheme can easily recall the embedded watermark for the purpose of image authentication,...
In this paper, the authors proposed a novel multiple watermarking algorithm which embedded two watermarks into original image in different frequency by using bandelet transform. Firstly, we can get frequency coefficients after performing a 2 dimensional discrete wavelet transform (DWT) to original image. Secondly, we implemented a bandeletization to higher coefficients then got the bandeletization...
This paper presents a robust better gray image watermarking algorithm based on the distance in the wavelet transform domain. Firstly, two images will be pretreated: the vector image is transformed into discrete wavelet domain, the level of transform is decided by the size of the watermark image, another pretreatment is that watermark image is scrambled by Arnold transform; Secondly, the edge information...
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