Television – Camera – system and detail – Combined image signal generator and general image signal...
Reexamination Certificate
2009-04-15
2011-11-08
Ometz, David (Department: 2622)
Television
Camera, system and detail
Combined image signal generator and general image signal...
C348S169000
Reexamination Certificate
active
08054338
ABSTRACT:
A method for determining a luminance threshold value of a video region includes: performing a plurality of luminance threshold value generation operations on the video region included in a plurality of video frames, respectively. Each luminance threshold value generation operation includes: generating a total luminance value according to a plurality of luminance values of a plurality of pixels in the video region; subtracting a current luminance threshold value temporarily stored in a register from the total luminance value to generate a luminance error value; performing a specific filtering operation on the luminance error value to generate a filtered luminous error value; accumulating the filtered luminance error value to generate an accumulation result; and updating the current luminance value in the register according to the accumulation result and a luminance approximative value.
REFERENCES:
patent: 7010047 (2006-03-01), Amara et al.
patent: 7227893 (2007-06-01), Srinivasa et al.
patent: 7660518 (2010-02-01), Sasaki
patent: 2008/0043120 (2008-02-01), Mitsunaga
Berhan Ahmed A
Hsu Winston
Margo Scott
Ometz David
Primax Electronics Ltd.
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