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Geometrically invariant watermarking: synchronization through circular Hough transform Lee, Hae-Yeoun; Lee, Choong-Hoon; Lee, Heung-Kyu, MULTIMEDIA TOOLS AND APPLICATIONS, v.34, no.3, pp.337 - 353, 2007-09 |
Robust image watermarking using local invariant features Lee, HY; Kim, H; Lee, Heung-Kyu, OPTICAL ENGINEERING, v.45, pp.90 - 96, 2006-03 |
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