A least squares calibration method for fringe projection profilometry

被引：4

作者：

Guo, HW ^{[1
]}

He, HT ^{[1
]}

Yu, YJ ^{[1
]}

Chen, MY ^{[1
]}

机构：

[1] Shanghai Univ, Lab Appl Opt & Metrol, Shanghai 200072, Peoples R China

来源：

INTERFEROMETRY XII: TECHNIQUES AND ANALYSIS | 2004年 / 5531卷

关键词：

three-dimensional measurement; fringe projection profilometry; calibration; least squares estimation;

D O I：

10.1117/12.560204

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper presents a novel least squares calibration approach for fringe projection profilometry. This approach is based on a simple nonlinear function, which is deduced by analyzing the geometry of measurement system and perfectly describes the mapping relationship between the depth map and phase distribution. The calibration is implemented by translating a target plane to a sequence of given positions with known depths, and measuring its phase distributions. Based on least squares estimation, an algorithm with linear computation is deduced to retrieve the related parameters, by which the burden of computational complexity is effectively alleviated. In experiment, a plaster statue is measured to demonstrate the validity of the principle.

引用

页码：429 / 440

页数：12

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