Apparatus and method of controlling brightness of image

Details Apparatus and method of controlling brightness of image Apparatus and method of controlling brightness of image

2007-09-11

2007-09-11

Tung, Kee M. (Department: 2628)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S012000, C345S063000, C345S426000, C345S589000, C345S617000, C345S619000, C345S690000, C348S687000, C382S168000, C382S274000

Reexamination Certificate

active

10291652

ABSTRACT:
Provided are an image brightness controlling apparatus and method, and an adaptive brightness controlling apparatus and method based on the brightness degree and/or brightness range of an image. The image brightness controlling apparatus includes a brightness increment arithmetic unit for outputting a brightness increment for a pixel, and an individual component brightness increment arithmetic unit for outputting the brightness increments of individual components constituting the pixel in response to the brightness increment for a pixel. The individual component brightness increment arithmetic unit multiplies the brightness increment of the pixel by each of the unit vectors of the components constituting the pixel to obtain the brightness increments of the individual components. The image brightness controlling apparatus further includes an adder for adding the components constituting the pixel to the brightness increments of the components. The image brightness controlling apparatus and the adaptive image brightness controlling apparatus can maintain the sense of color of an image (e.g., the hue or chroma of an image) while increasing the brightness degree and brightness range of an image.

REFERENCES:
patent: 5233410 (1993-08-01), Fairhurst
patent: 5818975 (1998-10-01), Goodwin et al.
patent: 6486889 (2002-11-01), Meyers et al.
patent: 6664973 (2003-12-01), Iwamoto et al.
patent: 0 533 100 (1993-03-01), None
patent: 0 533 100 (1993-03-01), None
patent: 2000-115796 (2000-04-01), None
patent: 2001119714 (2001-04-01), None
patent: 2001-36456 (2001-05-01), None
patent: WO/98/051089 (1998-11-01), None
W. K. Pratt; Digital Image Processing; 1978; Cover and pp. 307-317; John Wiley & Sons, Inc.; United Publishing & Promotion Co., Ltd.
R. C. Gonzalez et al.; Digital Image Processing; 1993; Cover and pp. 173-179; Addison-Wesley Publishing Company.
English translation of Notice to Submit Response issued by the Korean Patent Office on Feb. 23, 2004 in corresponding application 10-2002-0023726.
European Search Report issued by the European Patent Office on Oct. 18, 2004 in corresponding application 02257773.8-2202.
Office Action issued by the Japanese Patent Office on Jan. 26, 2005 in corresponding application.
Japanese Office Action dated Aug. 17, 2005.

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