CALIBRATION METHOD AND APPARATUS FOR BRIGHTNESS DETECTION VALUE AND CHROMINANCE DETECTION VALUE OF OPTICAL CAMERA

WIPO Patent Application WO/2016/169055

A1

A calibration method and apparatus for a brightness detection value and a chrominance detection value of an optical camera. The calibration method comprises: dividing a brightness range of a reference display screen into a predetermined number of screen brightness levels; calculating a brightness correction factor; calculating a chrominance correction factor at various screen brightness levels; and using the brightness correction factor and the chrominance correction factor to calibrate a brightness value to be calibrated and a chrominance value to be calibrated which are obtained by an optical camera detecting a display screen to be calibrated, so as to obtain a brightness calibration value and a chrominance calibration value. In this calibration method, a brightness detection value and a chrominance detection value which are obtained through the detection by the optical camera may be corrected as a brightness detection value and a chrominance detection value which are obtained through detection by a reference detection device, so as to reduce errors between a brightness detection value and an actual brightness value and between a chrominance detection value and an actual chrominance value when an optical camera is used to perform brightness and chrominance detections of a display screen.

QIAN YONGYI (CN)

PCT/CN2015/077408

October 27, 2016

April 24, 2015

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HUAWEI TECH CO LTD (CN)

G01J1/10; G01J3/50

JP2010139356A	2010-06-24
JP2007093477A	2007-04-12
CN102213618A	2011-10-12

CHINABLE IP (CN)
北京弘权知识产权代理事务所(普通合伙） (CN)

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