PROTECTION OF POLIGRAPHIC PRODUCTS USING DIGITAL WATERMARKS
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Abstract
The article proposes algorithms for steganographic embedding and extraction of digital watermarks (DWM) embedded in the digital original of printed products in order to protect copyrights to them. The built-in digital image is resistant to distortions introduced into images during printing and scanning and is not visually noticeable. The resistance of the extraction algorithm to geometric distortions is achieved through the use of an algorithm for restoring the original geometry of the image by comparing the special points of the distorted copy of the container image and the original image. The results of testing the robustness of the algorithm both to simulated distortions of the printing and scanning channel, and to distortions introduced into images when using real printing and scanning devices are presented. The impact of the embedding process on image quality is also considered.
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References
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