Method and system for determining image transformation
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United States of America Patent
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Oct 25, 2005
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N/A
app pub date -
Nov 30, 1999
filing date -
Nov 30, 1999
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Abstract
A watermark decoding method makes use of a line-finding algorithm (e.g., the Radon transform) to determine rotation of an image from an initial orientation. Once rotation has been characterized, differential scaling of the image can readily be determined.
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