Information embedding method, information extracting method, information embedding apparatus, information extracting apparatus, and recording media
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United States of America Patent
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Dec 25, 2001
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N/A
app pub date -
Jun 30, 1998
filing date -
Jul 3, 1997
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Abstract
An apparatus for embedding secret information in an image signal transmitted with a shape signal showing the shape of an object is described. This apparatus comprises an embedding position decision unit for deciding a position in the object where the secret information is to be embedded, according to the shape signal; and a compositor for embedding the secret information in the position decided by the decision unit. Therefore, the secret information is protected against translation or clipping of image.
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