Measurement model of the omnidirectional structured-light vision and its calibration method

被引：3

作者：

He, Rongfang ^{[1
]}

Liu, Chang ^{[2
]}

Zhang, Zhou ^{[2
]}

Sun, Junhua ^{[2
]}

机构：

[1] China Acad Engn Phys, Inst Chem Mat, 64 Mianshan Rd, Mianyang 621999, Peoples R China

[2] Beihang Univ, Sch Instrumentat & Optoelect Engn, 37 Xueyuan Rd, Beijing 100191, Peoples R China

来源：

OSA CONTINUUM | 2019年 / 2卷 / 03期

关键词：

Calibration method - Existing systems - Inner surface inspection - Internal diameters - Measurement model - Omnidirectional measurements - Refraction distortion - Structured-light vision;

D O I：

10.1364/OSAC.2.000839

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The omnidirectional structured-light vision measurement is significant for inner surface inspections. In existing systems, the camera and the projector are installed inside a glass tube, inevitably causing the refraction distortion. In this paper, we propose a measurement model of the omnidirectional structured-light vision and the corresponding calibration method. The model can correct the refraction distortion and realize the omnidirectional measurement. An aluminum tube with an internal diameter of 288.50 mm is measured by the system. The repeatability and precision reach 0.05 mm and 0.23 mm, respectively. The experimental results prove that the accuracy is improved by 7.9 times compared with the model ignoring distortion. (c) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.

引用

页码：839 / 847

页数：9

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