A camera shooting resilient watermarking scheme for underpainting documents
IEEE Transactions on Circuits and Systems for Video Technology, 2019•ieeexplore.ieee.org
This paper designs a novel underpainting based camera shooting resilient (CSR) document
watermarking algorithm for dealing with the leak source tracking problem. By applying such
algorithm, we can extract the authentication watermark information from the candid
photographs. The watermarked underpainting contains three significant properties. 1)
Inconspicuousness. The watermarked underpainting is inconspicuous and it will not easily
be maliciously attacked. 2) Robustness. We propose DCT-based watermark embedding …
watermarking algorithm for dealing with the leak source tracking problem. By applying such
algorithm, we can extract the authentication watermark information from the candid
photographs. The watermarked underpainting contains three significant properties. 1)
Inconspicuousness. The watermarked underpainting is inconspicuous and it will not easily
be maliciously attacked. 2) Robustness. We propose DCT-based watermark embedding …
This paper designs a novel underpainting based camera shooting resilient (CSR) document watermarking algorithm for dealing with the leak source tracking problem. By applying such algorithm, we can extract the authentication watermark information from the candid photographs. The watermarked underpainting contains three significant properties. 1) Inconspicuousness. The watermarked underpainting is inconspicuous and it will not easily be maliciously attacked. 2) Robustness. We propose DCT-based watermark embedding algorithm and distortion compensation based extracting algorithm, which make the watermark robust to camera shooting process. 3) Autocorrelation. We design the flip-based method to arrange the watermarked underpainting. So that a complete watermark region can be accurately located even if part of the document is recorded. Compared with previous watermarking algorithms, the proposed scheme guaranteed content independent embedding as well as the robustness to the camera shooting process. Besides, the proposed scheme satisfies the accuracy of extraction even when the captured document is incomplete.
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