DIGITAL WATERMARK EMBEDDING METHOD AND DIGITAL WATERMARK DETECTION METHOD
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United States of America Patent
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Issued Date -
Aug 28, 2014
app pub date -
Jan 22, 2014
filing date -
Feb 25, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A digital watermark embedding system generates a watermarked image by providing one or more specific regions in an image, each specific region including two or more base regions symmetric with respect to the centroid, and by embedding a watermark in the image while avoiding the specific region. Further, a digital watermark detecting system detects a watermark in a region other than the specific region, by detecting the shape of the specific region in which no watermark is embedded, calculating the centroid position of the specific region as a centroid, and correcting geometric transformation of the image based on the location in the image that corresponds to one or more calculated centroids.
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