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Title:
METHOD FOR COLLECTION AND CORRECTION OF DISPLAY UNIT
Document Type and Number:
WIPO Patent Application WO/2021/212394
Kind Code:
A1
Abstract:
Disclosed is a method for the collection and correction of a display unit. The method comprises the steps of: placing a camera (1) in front of a display unit (3) to be corrected, such that a center normal of said display unit (3) coincides with an optical axis of the camera (1); collecting RGB brightness data of said display unit (3) to obtain an original brightness matrix; placing a standard brightness plane (2) in front of a lens of the camera (1), and keeping a central normal of the standard brightness plane (2) coincident with the optical axis of the camera (1); obtaining a final brightness correction matrix of the camera (1) according to the collected RGB brightness data of the standard brightness plane (2); multiplying the original brightness matrix by the final brightness correction matrix of the camera (1) to obtain a real brightness matrix in which the curved distortion of the camera (1) is not recovered; and performing brightness correction on the real brightness matrix to obtain a corrected brightness matrix. The method is used for on-site correction or on-site maintenance, and by means of the method, consistent flatness and absolute brightness values can be obtained, and positions can be randomly interchanged on a display screen.

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Inventors:
ZHENG XIFENG (CN)
MAO XINYUE (CN)
DING TIEFU (CN)
GUO GUIXIN (CN)
WANG YANG (CN)
Application Number:
PCT/CN2020/086311
Publication Date:
October 28, 2021
Filing Date:
April 23, 2020
Export Citation:
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Assignee:
CHANGCHUN CEDAR ELECTRONICS TECH CO LTD (CN)
International Classes:
G09G3/32
Foreign References:
CN103426403A2013-12-04
CN103327259A2013-09-25
CN105096815A2015-11-25
CN102723054A2012-10-10
CN108320696A2018-07-24
JP5468914B22014-04-09
CN1308465A2001-08-15
Attorney, Agent or Firm:
CHANGCHUN JIDA PATENT AGENT CO ., LTD (CN)
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