US 11,055,839 B2
Method for fast judging and optimizing light emitting quality of light guide plate based on image processing technology
Shumei Gao, Wuxi (CN); Ping Li, Wuxi (CN); Weiying Qian, Wuxi (CN); Jianjun Cao, Wuxi (CN); and Yan Kong, Wuxi (CN)
Assigned to JIANGNAN UNIVERSITY, Wuxi (CN)
Filed by Jiangnan University, Wuxi (CN)
Filed on May 17, 2019, as Appl. No. 16/415,335.
Application 16/415,335 is a continuation of application No. PCT/CN2018/073770, filed on Jan. 23, 2018.
Claims priority of application No. 201710741221.8 (CN), filed on Aug. 25, 2017.
Prior Publication US 2019/0272629 A1, Sep. 5, 2019
Int. Cl. G06T 7/00 (2017.01); G01M 11/00 (2006.01); F21V 8/00 (2006.01); G06T 5/40 (2006.01); F21S 8/00 (2006.01); F21Y 115/10 (2016.01)
CPC G06T 7/0004 (2013.01) [F21S 8/00 (2013.01); G01M 11/30 (2013.01); G02B 6/0073 (2013.01); G06T 5/40 (2013.01); F21Y 2115/10 (2016.08); G06T 2207/30168 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method comprising:
acquiring a spatial distribution of luminous emittance from a light guide plate as a grayscale image;
compiling a histogram of intensity values of pixels of the grayscale image;
identifying pixels based on their intensity values in the histogram; and
reducing a range of the intensity values of the identified pixels by altering optical structures of the light guide plate at locations corresponding to the identified pixels.