发明名称 |
DIGITAL WATERMARKING FOR FEW-COLOR IMAGES |
摘要 |
Systems and methodologies for embedding a watermark in a few-color image are provided herein. A digital watermarking algorithm named Spatial Unified Key Insertion (SUKI) can be utilized, wherein adaptive threshold halftoning can be performed in combination with contour shaping and modification to embed a binary logo into a digital image. Watermarking can be performed for an image using SUKI without introducing "salt-and-pepper" artifacts into the image. Further, watermarking techniques described herein can embed data into an image with a considerably high payload while providing excellent resistance against JPEG compression and other attacks and introducing no additional colors into an image.
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申请公布号 |
US2009080688(A1) |
申请公布日期 |
2009.03.26 |
申请号 |
US20070860730 |
申请日期 |
2007.09.25 |
申请人 |
THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY |
发明人 |
AU OSCAR CHI LIM;YIP SHU KEI |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
代理机构 |
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代理人 |
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主权项 |
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