中国激光, 2017, 44 (10): 1004003, 网络出版: 2017-10-18
超大尺度线结构光传感器三维测量系统外参数标定 下载: 983次
Extrinsic Parameters Calibration of Three-Dimensional Measurement System for Ultra-Large Scale Line-Structured Light Sensor
测量 超大尺度线结构光 外参数现场标定 一维靶标 消隐点 measurement ultra-large scale line-structured light extrinsic parameters onsite calibration one-dimensional target vanishing point
摘要
为了满足大型自由曲面工件高精度实时三维测量的需求, 设计了一种超大尺度线结构光传感器三维测量系统, 并提出一种基于一维靶标的传感器外参数的现场标定方法。实验结果表明, 该方法的标定精度与基于平面靶标的方法相当, 且其一维靶标的高精度制作更容易, 外参数的现场标定过程操作更方便, 更适合超大尺度线结构光传感器的现场标定。
Abstract
In order to meet the requirements of high-precision real-time three-dimensional measurement of large-size free-form surface workpieces, a three-dimensional measurement system for an ultra-large scale line-structured light sensor is designed and an onsite calibration approach for the extrinsic parameters of this sensor based on one-dimensional targets is proposed. The experimental results show that the proposed calibration method has a equivalent accuracy to compare with that of the planar-target-based method. Moreover, the proposed calibration method is easier for the accurate fabrication of the one-dimensional targets, more convenient for the onsite calibration process of the extrinsic parameters, and more suitable for the calibration of ultra-large scale line-structured light sensor.
解则晓, 朱瑞新, 张安祺. 超大尺度线结构光传感器三维测量系统外参数标定[J]. 中国激光, 2017, 44(10): 1004003. Xie Zexiao, Zhu Ruixin, Zhang Anqi. Extrinsic Parameters Calibration of Three-Dimensional Measurement System for Ultra-Large Scale Line-Structured Light Sensor[J]. Chinese Journal of Lasers, 2017, 44(10): 1004003.