An actual blind detection watermark approach based on CT and ICA
ASID'09 Proceedings of the 3rd international conference on Anti-Counterfeiting, security, and identification in communication
Contourlet-based image watermarking using optimum detector in a noisy environment
IEEE Transactions on Image Processing
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This paper presents a novel method of blind image watermarking in contourlet domain. We have used spread spectrum technique for additive watermark embedding. A correlation detector is used to detect the embedded pseudorandom sequence. The binary logo thus retrieved proves authenticity of the image. The similarity of the retrieved binary logo with the original embedded logo is veriJied using correlation technique. Post processing of the retrieved logo gives better visual effects, further aiding threshold selection for detection. We have verijied the robustness of the proposed method against dzrerent attacks including StirMark attack. The proposed method is compared with a wavelet based blind technique and the results prove that contourlet based technique gives better robustness, under similar embedding conditions.