Watermarking
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 31, 2006
Grant Date -
N/A
app pub date -
Mar 20, 2000
filing date -
Mar 18, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A watermarking system and method is proposed for still or moving pictures in which a watermark is embedded robustly and simply into DC-values, but without causing unacceptable visible picture degradation. The watermark is secure and can be readily detected, and the method can be used to convey additional data. Also disclosed is a method for watermarking a sequence of pictures in which the visibility of artifacts is reduced. The watermark may carry data and may be used to label a program.
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Cited Art Landscape
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