Triangulation model taking into account light sheet curvature

被引：23

作者：

Bracun, Drago ^{[1
]}

Jezersek, Matija ^{[1
]}

Diaci, Janez ^{[1
]}

机构：

[1] Univ Ljubljana, Fac Mech Engn, Ljubljana 1000, Slovenia

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2006年 / 17卷 / 08期

关键词：

shape acquisition; structured light; laser triangulation; computer vision;

D O I：

10.1088/0957-0233/17/8/019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper examines the problem of systematic measurement errors in optical triangulation when some light sheets that illuminate the measured surface exhibit non-negligible bending (curvature). The problem is demonstrated experimentally by triangulation measurement of two reference bodies whose geometry reveals systematic measurement errors due to light sheet curvature. To correct these errors a triangulation model is developed which assumes parabolic light sheet shape and allows exact solution of system equations. Test measurements show that the model successfully compensates for systematic measurement errors originating from the curvature of light sheets.

引用

页码：2191 / 2196

页数：6

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