Digital-watermark-embedding and picture compression unit

Details Digital-watermark-embedding and picture compression unit Digital-watermark-embedding and picture compression unit

2008-04-01

2008-04-01

Werner, Brian (Department: 2624)

Image analysis

Applications

Reexamination Certificate

active

07352877

ABSTRACT:
In order to avoid content deteriorations caused by embedment of a digital watermark into a moving picture, a process to search a picture for a motion and a process to filter a picture for medical care must be carried out, raising a processing cost. It is thus difficult to implement equipment for processing such pictures at a low cost. In a compound apparatus for encoding compressed code of a moving picture by employing a unit for embedding a digital watermark into a picture, a digital-watermark embedment quantity is determined by using a motion vector and a quantization parameter in a process to embed a digital watermark into the picture. It is thus no longer necessary to carry out the process to search a picture for a motion and the process to filter a picture for medical care for embedment of a digital watermark so that the cost of the entire apparatus can be reduced substantially.

REFERENCES:
patent: 6535254 (2003-03-01), Olsson et al.
patent: 6687412 (2004-02-01), Rao et al.
patent: 6725372 (2004-04-01), Lewis et al.
patent: 7020304 (2006-03-01), Alattar et al.
patent: 7130443 (2006-10-01), Werner et al.
patent: 2000175019 (1998-12-01), None
Video Information Media Institute Technical Report, Commercial Electronics Media Engineering, Jul. 2002, VIMI Technical Report vol. 26, No. 48, ISSN 1342-6893.

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