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Title:
METHOD FOR COMPENSATING CAMERA FLASH VIGNETTING
Document Type and Number:
WIPO Patent Application WO/2018/068488
Kind Code:
A1
Abstract:
The present invention discloses a method for compensating camera flash vignetting. The method comprises the following steps: turning on a camera and a flash unit, using a color card to fill an entire camera screen, and taking a photo; using Photoshop to divide the photo into a 17 x 13 matrix, and recording and storing an R, G and B value of each of the matrix partitions; obtaining an R gain correction coefficient and a B gain correction coefficient of the camera via camera debugging software, the R gain correction coefficient and the B gain correction coefficient both being 17 x 13 matrix parameters; calculating a new R value, a new G value, and a new B value; calculating a new R gain correction coefficient and a new B gain correction coefficient; and adjusting, according to a reddish state or a bluish state of the photo, a coefficient k to adjust a new R gain correction coefficient and a new B gain correction coefficient, and importing the adjusted R gain correction coefficient and the adjusted B gain correction coefficient into the camera so as to perform flash color compensation for a photograph taken.

Inventors:
HUANG ZIKAI (CN)
HE ZUOJUN (CN)
Application Number:
PCT/CN2017/080030
Publication Date:
April 19, 2018
Filing Date:
April 11, 2017
Export Citation:
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Assignee:
XOLO TECH SHENZHEN LIMITED (CN)
International Classes:
H04N5/217
Foreign References:
CN105338334A2016-02-17
CN102946501A2013-02-27
US20120114237A12012-05-10
CN104394329A2015-03-04
TW201026031A2010-07-01
CN106375636A2017-02-01
Attorney, Agent or Firm:
SHENZHEN KANGHONG INTELLECTUAL PROPERTY AGENT CO., LTD (CN)
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