Device and method for processing image data, transmitting medium, and recording medium
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United States of America Patent
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Jan 22, 2002
Grant Date -
N/A
app pub date -
Sep 1, 1998
filing date -
Sep 2, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device and method for processing image data, a transmitting medium, and a recording medium are disclosed. More particularly, in image data processing by which accompanying information is embedded as a watermark into coded image data, a position in a block as a unit of coding the coded image data is detected, a blocked watermark pattern is provided, an area in which an operation relative to a first level value is performed and an area in which an operation relative to a second level value is performed are offered, and a watermark is appended to the coded image data in accordance with the blocked watermark pattern. It is thus possible to easily append a watermark that can be certainly detected.
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