Title:
METHOD FOR MEASURING GLOSS UNIFORMITY OF ARC-SHAPED SURFACE
Document Type and Number:
WIPO Patent Application WO/2022/142162
Kind Code:
A1
Abstract:
A method for measuring the gloss uniformity of an arc-shaped surface, comprising: selecting an arc-shaped track (2) spaced in parallel to the curvature of an arc-shaped surface (1) to be measured, wherein a camera clamping device (3) is mounted on the arc-shaped track (2), and a camera is mounted on the camera clamping device (3); providing, at the edge of a region to be measured of said arc-shaped surface (1), a label (11) with a scale, wherein the scale direction of the label (11) is parallel to the curvature of said arc-shaped surface (1), and the scale of the label (11) is located at the edge of a photographing region of a camera; the camera moving along the arc-shaped track (2), and during the movement, photographing a picture each time the camera moves by a predetermined distance; taking the scale of the label (11) as a reference, splicing the photographed pictures to obtain an arc-shaped surface expanded view; performing gray-scale processing on the arc-shaped surface expanded view to obtain a gray-scale matrix and a gray-scale picture; setting a threshold n, and searching for each gray-scale value in the gray-scale matrix, so as to obtain a binary image; taking a certain region to collect statistics of a proportion of black pixel points, and determining the gloss distribution uniformity of a surface according to the statistics of the proportion. The method has the advantages of having an accurate result, being scientific and having low costs.
Inventors:
LU JING (CN)
SHEN YUN (CN)
HUANG SHENGUI (CN)
SHEN YUN (CN)
HUANG SHENGUI (CN)
Application Number:
PCT/CN2021/100083
Publication Date:
July 07, 2022
Filing Date:
June 15, 2021
Export Citation:
Assignee:
UNIV HUAQIAO (CN)
International Classes:
G01N21/952; G06T7/00
Foreign References:
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Attorney, Agent or Firm:
SHOUCHUANG JUNHE PATENT AGENT CO., LTD. XIAMEN (CN)
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