METHOD AND DEVICE FOR OBTAINING EXPOSURE COMPENSATION VALUE OF HIGH-DYNAMIC-RANGE IMAGE

WIPO Patent Application WO/2019/085705

A1

Disclosed in the invention are a method and device for obtaining the exposure compensation value of a high-dynamic-range image, wherein the method comprises the steps of: determining various-color channel histograms corresponding to a current scene, wherein the various-color channel histograms include the corresponding relationship of different brightness and pixel scales under various-color channels; according to a pre-set normal exposure brightness threshold value and pixel scale threshold value and the corresponding relationship of different brightness and pixel scales under various-color channels, determining an underexposure degree and an overexpose degree of the current scene; and, according to the underexposure degree and overexpose degree of the current scene, determining the underexposure compensation value and the overexpose compensation value of the current scene. By means of the method of the invention, the exposure compensation amount of a shot image can be adaptively determined according to different shooting scenes, so that optimal dynamic exposure compensation on the shot image can be realized; therefore, the quality of the shot image is good; and the user experience is improved.

LIU KAI (CN)

PCT/CN2018/108639

May 09, 2019

September 29, 2018

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GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)

H04N5/235

CN107635102A	2018-01-26
CN107888840A	2018-04-06
CN104580925A	2015-04-29
CN104301624A	2015-01-21
CN102075688A	2011-05-25
CN106572311A	2017-04-19
US20170064179A1	2017-03-02
US20140168486A1	2014-06-19
KR20090111065A	2009-10-26

See also references of EP 3694203A4

TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)

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