DIGITAL WATERMARKING FOR FEW-COLOR IMAGES
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United States of America Patent
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Issued Date -
Mar 26, 2009
app pub date -
Sep 25, 2007
filing date -
Sep 25, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
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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