Improved 2 + 1 phase-shifting algorithm for suppressing ambient light influence

Haitao Wu; Yiping Cao; Haihua AnHechen ZhangYujiao ZhangNa Yang

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Improved 2 + 1 phase-shifting algorithm for suppressing ambient light influence

机译：Improved 2 + 1 phase-shifting algorithm for suppressing ambient light influence

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摘要

By constructing two phase-shifted fringe images and a flat image, the 2 + 1 phaseshifting algorithm can reduce the error caused by motion and realize real-time and highresolution three-dimensional (3-D) measurement. However, the nonlinear gamma of the digital light processing and the ambient light will affect the light-field distribution of the flat image, and extensive experiments have shown that the distribution of the captured flat image is inconsistent with the DC component of the deformed patterns. Therefore, based on the linear calibration model, a more realistic DC component of the deformed patterns is deduced from the captured flat image. The AC components of the deformed patterns can be extracted more genuinely by subtracting the deduced DC component from deformed patterns. So, the influence of ambient light can be suppressed efficiently to improve 3-D measuring accuracy. The experimental results show the feasibility and validity of the proposed method.

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来源
《Optical Engineering》 |2020年第12期|124107-1-124107-10|共10页
作者
Haitao Wu; Yiping Cao; Haihua AnHechen ZhangYujiao ZhangNa Yang;
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作者单位

Sichuan University, Department of Opto-Electronics, Chengdu, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
flat image; phase-shifting algorithm; ambient light; linear calibration model; least square method;

Improved 2 + 1 phase-shifting algorithm for suppressing ambient light influence

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