Television – Camera – system and detail – Combined image signal generator and general image signal...
Patent
1996-02-01
1997-08-19
Burgess, Glenton B.
Television
Camera, system and detail
Combined image signal generator and general image signal...
348227, 348655, H04N 973
Patent
active
056593570
ABSTRACT:
The present invention provides an auto white balance adjusting device which can appropriately adjust the white balance. A brightest block searching circuit (8) obtains blocks having block representative values, each R,G,B component of which is greater than a respective predetermined threshold value, and selects the brightest one out of the obtained blocks. A brightest block average value calculating circuit (9) obtains an average of the block representative values distributed in the image signal area of a chromaticity near to that of the brightest block. This brightest block average value is thought to be highly influenced by a predominant light source in taking the picture. The white balance can be appropriately adjusted by using this value, irrespective of the kinds of light sources.
REFERENCES:
patent: 5319449 (1994-06-01), Saito et al.
patent: 5485202 (1996-01-01), Ueda
patent: 5489939 (1996-02-01), Haruki et al.
Burgess Glenton B.
Eastman Kodak Company
Woods David M.
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