Image analysis – Applications
Reexamination Certificate
2003-09-29
2009-12-08
Azarian, Seyed (Department: 2624)
Image analysis
Applications
C382S166000, C358S003280
Reexamination Certificate
active
07630509
ABSTRACT:
Determining a chrominance portion to be watermarked employs a perception-based table that indicates for various pixel values which of the chrominance portions, if any, should be selected for watermarking. Only the Y, U, and V values of a pixel are needed to access the table and determine which chrominance portion should be selected. However, the table may be represented such that it may be accessed using only R, G, and B values. The table may be modified so that it may indicate which of U or V should be selected, or that neither should be selected, indicating that this pixel should not be watermarked at all. Advantageously, the table may be simplified by employing some processing, because a large section of the table may be replaced by a simple test on the pixel values, e.g., U<128, to determine the selected chrominance portion.
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U.S. Appl. No. 10/673,892, filed Sep. 29, 2003, Zarrabizadeh.
U.S. Appl. No. 10/673,894, filed Sep. 29, 2003, Zarrabizadeh.
Alcatel-Lucent USA Inc.
Azarian Seyed
Rosenthal E. J.
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