Measurement of the surface roughness of objects based on
MATLAB and polarization photography technology

WU Qiang, BAI Rui-jie, GAO Hong, WANG Mei

doi:10.16854 /j.cnki.1000-0712.190393

College Physics >

2020 , Vol. 39 >Issue 8: 68 - 72

DOI: https://doi.org/10.16854 /j.cnki.1000-0712.190393

Measurement of the surface roughness of objects based on MATLAB and polarization photography technology

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1. Shen Yuan Honors College，Beihang University，Beijing 100191，China; 2. School of Physics，Beihang University，Beijing 100191，China

Received date: 2019-08-25

Revised date: 2020-01-15

Online published: 2020-09-07

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Abstract

In this paper，the principle that the light intensity would change after the light passed through the

polarizer is combined with the polarization photography technology and Matlab processing to separate the specular

reflection and the diffuse reflection of the obtained photograph. With the surface roughness increasing，the ratio of

the reduction of the specular reflection and the diffuse reflection is reduced. This result can be used to detect of the

surface roughness of the object.

Key words： polarization; roughness detection; specular reflection; diffuse reflection

Cite this article

WU Qiang, BAI Rui-jie, GAO Hong, WANG Mei . Measurement of the surface roughness of objects based on MATLAB and polarization photography technology[J]. College Physics, 2020 , 39(8) : 68 -72 . DOI: 10.16854 /j.cnki.1000-0712.190393

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