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A Novel Image Recovery Algorithm for Visible Watermarked Images

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Fig. 1. Segment the watermark area using the seed-growing algorithm. (a) The watermarked image
Fig. 3. Diagram presents the difference calculation according to (7). A 5 2 5 window P(i; j) consists of the nonwatermarked and recovered pixels.
Fig. 5. Proposed algorithm recovers the linear-gradient watermarked image. (a) Watermarked image with PSNR = 30:97 dB
Fig. 6. Recovering the public domain image. (a) 768 2 512 watermarked image is embedded with a small watermark [17]
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