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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Digital Watermarking Algorithm Based on Image Fusion
verfasst von : Fan Zhang, Dongfang Shang, Xinhong Zhang
Erschienen in: Life System Modeling and Intelligent Computing
Verlag: Springer Berlin Heidelberg
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The process of watermarking can be viewed as a process of image fusion from the original image and the watermark image. Assuming that the watermarked image is the steady-state, Kalman filter is used as an optimal estimation algorithm in the process of image fusion. The math model is built according to the watermark image and the original image. Then the state equation and the corresponding measurement equation are built. The optimal estimation is received in the case of minimum estimation error variance. Experimental results show that the proposed algorithm has a good performance both in robustness and invisibility.