CALIBRATION DEVICE, CALIBRATION METHOD, CALIBRATION PROGRAM, COMPUTER-READABLE RECORDING MEDIUM, AND IMAGE INPUT DEVICE

Japanese Patent JP2010212814

A

To provide a calibration device that unifies variance among pixel values output from a plurality of image input devices.

The calibration device 50 includes: a calculation unit 11 which allocates Target_Min, Target_Max as pixel values for dark light intensity and a sensor saturation pixel value of an image input device 100a, and calculates Target_Mid as a pixel value for bright light intensity of the image input device 100a on the basis of the dark light intensity sensor pixel value, the bright light intensity sensor pixel value, and the sensor saturation pixel value of the image input device 100a, and Target_Min, and Target_Max; and a mapping unit 13 which allocates Target_Min and Target_Mid as pixel values after calibration to the dark light intensity and bright light intensity. Accordingly, the calibration device 50 can unify the variance among pixel values output from image input devices 100a to 100c.

JP6548403	Image processing equipment, image processing methods, and programs
JPH09187997	IMAGE FORMING DEVICE
JP5790100	Image reader, image forming device and image reading method

SASAMOTO HIROKAZU
YOSHIMOTO RYOJI
FUJIWARA AKIRA
HACHIMAN YOICHIRO
NAKO KAZUYUKI

JP2009054233A

September 24, 2010

March 06, 2009

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SHARP KK

H04N1/407; G06T5/00

JPH0563977A	1993-03-12
JP2002084403A	2002-03-22
JP2003000576A	2003-01-07
JPH0563977A	1993-03-12
JP2002084403A	2002-03-22
JP2003000576A	2003-01-07

Kenzo Hara International Patent Office

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