Improved geometrical model of fringe projection profilometry

被引：18

作者：

Huang, Zhengrong ^{[1
]}

Xi, Jiangtao ^{[1
]}

Yu, Yanguang ^{[1
]}

Guo, Qinghua ^{[1
,2
]}

Song, Limei ^{[2
]}

机构：

[1] Univ Wollongong, Sch Elect Comp & Telecommun Engn, Wollongong, NSW 2522, Australia

[2] Tianjin Polytech Univ, Tianjin Key Lab Adv Technol Elect Engn & Energy, Tianjin 300087, Peoples R China

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 26期

关键词：

CALIBRATION TECHNIQUE; SHAPE MEASUREMENT;

D O I：

10.1364/OE.22.032220

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The accuracy performance of fringe projection profilometry (FPP) depends on accurate phase-to-height (PTH) mapping and system calibration. The existing PTH mapping is derived based on the condition that the plane formed by axes of camera and projector is perpendicular to the reference plane, and measurement error occurs when the condition is not met. In this paper, a new geometric model for FPP is presented to lift the condition, resulting in a new PTH mapping relationship. The new model involves seven parameters, and a new system calibration method is proposed to determine their values. Experiments are conducted to verify the performance of the proposed technique, showing a noticeable improvement in the accuracy of 3D shape measurement. (c) 2014 Optical Society of America

引用

页码：32220 / 32232

页数：13

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