Method of detecting digital watermark information

Details Method of detecting digital watermark information Method of detecting digital watermark information

2007-12-18

2007-12-18

Mehta, Bhavesh M (Department: 2624)

Image analysis

Applications

C382S232000

Reexamination Certificate

active

10411217

ABSTRACT:
The present invention can detect watermark information from motion picture of various scanning methods and various picture sizes without causing increase of a memory capacity.A watermark information detection apparatus1converts encoded watermarked motion picture4into standard motion picture5having the smallest data size among the assumed kinds of motion picture. Further, the watermark information detection apparatus1scales a standard coordination system that is utilized for specifying embedding locations of a watermark pattern. Then, with respect to each field of the standard motion picture5, watermark information is detected from predetermined locations specified in the scaled standard coordinate system by the watermark pattern.

REFERENCES:
patent: 5946414 (1999-08-01), Cass et al.
patent: 6647125 (2003-11-01), Matsumoto et al.
patent: 2001-53955 (2001-02-01), None
patent: PCT/US99/03338 (1999-11-01), None

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