Digital watermark embedding processor, digital watermark...

Details Digital watermark embedding processor, digital watermark... Digital watermark embedding processor, digital watermark...

2006-02-07

2006-02-07

Werner, Brian (Department: 2621)

Image analysis

Applications

C382S173000, C382S232000

Reexamination Certificate

active

06996250

ABSTRACT:
A digital watermark embedding processor and digital watermark embedding-processing method set the lowest-common-multiple picture size of the sizes of an unconverted picture and a converted picture when embedding digital watermarks on certain data having a possibility of format conversion and set, for the lowest-common-multiple picture size, the values of the digital watermarks in the converted picture. Based on the set values, digital watermarks for the unconverted picture are set and are embedded in the picture. In this construction, even when a watermark-embedded picture is processed for conversion, it is ensured that accurate detection from the converted picture of watermarks can be performed.

REFERENCES:
patent: 6304966 (2001-10-01), Shimizu
Niu et al, “Multiresolution Digital Watermarking For Still Image”, Neural Networks for Signal Processing X, 2000. Proceedings of the 2000 IEEE Signal Processing Society Workshop, vol.: 2, Dec. 11-13, 2000, pp.: 547-556 vol. 2□□.

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