System and method for dynamic gamma correction in digital video

Details System and method for dynamic gamma correction in digital video System and method for dynamic gamma correction in digital video

2011-03-29

2011-03-29

Tran, Trang U (Department: 2422)

Television

Image signal processing circuitry specific to television

Gray scale transformation

C348S671000, C348S674000

Reexamination Certificate

active

07916219

ABSTRACT:
A technique for improving image quality using dynamic gray scale correction, in one example embodiment, includes dynamically computing non-linear gamma curves using histogram data extracted from a current video frame. A gray scale correction is then dynamically applied to each pixel in the current or next video frame as a function of the computed non-linear gamma curves.

REFERENCES:
patent: 6018588 (2000-01-01), Kim
patent: 7003153 (2006-02-01), Kerofsky
patent: 7110046 (2006-09-01), Lin et al.
patent: 7369183 (2008-05-01), Oka et al.
patent: 2003/0161549 (2003-08-01), Lei et al.

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