A Calibration Method for Adjustment of Structured Light System with Planar Distance Constraints and a Weighted Integrated Measurement Model for Binoculars

doi:10.7652/xjtuxb202002021

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A Calibration Method for Adjustment of Structured Light System with Planar Distance Constraints and a Weighted Integrated Measurement Model for Binoculars

更新时间：2025-05-08

- A Calibration Method for Adjustment of Structured Light System with Planar Distance Constraints and a Weighted Integrated Measurement Model for Binoculars
- Vol. 54, Issue 2, Pages: 166-174(2020)
- 作者机构：
  
  西安交通大学机械工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202002021
  CLC： TP391.41
- Online First：10 February 2020，
  
  Published：2020
- 稿件说明：
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A Calibration Method for Adjustment of Structured Light System with Planar Distance Constraints and a Weighted Integrated Measurement Model for Binoculars[J]. 2020, 54(2): 166-174.
DOI：

A Calibration Method for Adjustment of Structured Light System with Planar Distance Constraints and a Weighted Integrated Measurement Model for Binoculars[J]. 2020, 54(2): 166-174. DOI： 10.7652/xjtuxb202002021.

摘要

针对传统标定方法严重依赖标定物精度、普通平差标定模型参数求解精度受限等问题

提出了一种含平面距离约束的结构光系统平差标定方法。该标定方法首先将平面标定物中的部分标志点作为控制点

利用控制点间的距离信息构建约束方程

然后将约束方程与平差模型相结合构建含平面距离约束的光束法平差模型

最后通过该模型优化求解系统参数。同时

为获得更高的测量精度

提出了一种加权集成测量模型

该模型根据系统各测量器件平差标定精度的差异

对各器件分配不同权重

构建了系统加权集成测量模型。搭建了系统测量实验平台

对所提标定及测量方法的有效性进行验证

实验结果表明

在250 mm×200 mm的标定视场下

所提的含平面距离约束的平差方法相较于传统方法

标定精度提升了25%

加权集成测量模型的综合测量精度提升了88%。

Abstract

A calibration method for adjustment of structured light system with planar distance constraints is proposed to improve the shortcomings of traditional calibration methods

such as the serious dependence on the accuracy of calibrators and the limited accuracy of solving parameters of ordinary adjustment calibration model. The method firstly takes some marked points in the plane calibrator as control points

and uses the distance information between the control points to construct constraint equations. Then

a beam adjustment model with plane distance constraint is constructed by combining the constraint equations and the adjustment model. Finally

the system parameters are determined by optimi-ation solution of the model. Further

a weighted integrated measurement model is proposed to obtain higher measurement accuracy. The model assigns different weight to each measuring device according to its difference of calibration accuracy. Finally

a system measurement experiment platform is bui

关键词

Keywords

references

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