Absolute phase correction for phase-measuring profilometry based on color-coded fringes

被引：3

作者：

Cui, Lei ^{[1
]}

Feng, Guoying ^{[1
]}

Li, Hongru ^{[1
]}

Yuan, Han ^{[1
]}

Bao, Zhongyi ^{[1
]}

机构：

[1] Sichuan Univ, Coll Elect & Informat Engn, Chengdu, Sichuan, Peoples R China

来源：

OPTICAL ENGINEERING | 2021年 / 60卷 / 02期

基金：

中国国家自然科学基金;

关键词：

phase-measuring profilometry; absolute phase correction; color-coded; color crosstalk; 3-DIMENSIONAL SHAPE MEASUREMENT; CODING METHOD; PROJECTION;

D O I：

10.1117/1.OE.60.2.024101

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A phase correction method that utilizes fringe color-coding in phase-measuring profilometry is proposed. Original and additional fringes are encoded into the R and B channels, respectively. The R + B channel patterns are projected onto an object, captured using a camera, where the R and B channels are extracted. Then, phase shifts obtained from the R and B channels are utilized for absolute phase calculation and correction. Simulations and experiments demonstrate that this method can correct edge order errors and avoid increasing the fringe number. Experiments performed using the R + G, G + B, and R + B channels demonstrate that R + B exhibits the least color crosstalk. (C) 2021 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：10

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