TRANSPARENT ROBUST IMAGE WATERMARKINGMitchell
نویسندگان
چکیده
We propose a watermarking scheme to hide copyright information in an image. The scheme employs visual masking to guarantee that the embedded watermark is invisible and to maximize the robustness of the hidden data. The watermark is constructed for arbitrary image blocks by ltering a pseudo-noise sequence (author id) with a lter that approximates the frequency masking characteristics of the visual system. The noise-like watermark is statistically invisible to deter unauthorized removal. Experimental results show that the watermark is robust to several distortions including white and colored noises, JPEG coding at diierent qualities, and cropping.
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تاریخ انتشار 1996