| 万 杰,张 进,刘远航,夏豪杰,王 君.运用光线追迹算法的高温物体视觉三维测量[J].电子测量与仪器学报,2022,36(8):122-131 |
| 运用光线追迹算法的高温物体视觉三维测量 |
| Visual three-dimensional measurement of high temperatureobject using light tracing algorithm |
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| DOI： |
| 中文关键词: 高温测量 光线追迹 立体视觉 梯度折射率 |
| 英文关键词:high temperature measurement light tracing stereo vision graded index |
| 基金项目:国家自然科学基金(52175504，51927811)、中央高校基本科研业务费专项(PA2021KCPY0027，PA2021GDGP0061)项目资助 |
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| Author | Institution |
| Wan Jie | 1. Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Optoelectronics
Engineering, Hefei University of Technology |
| Zhang Jin | 1. Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology,2.Engineering Research Center of Safety Critical Industrial Measurement and Control Technology, Ministry of Education |
| Liu Yuanhang | 1. Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology |
| Xia Haojie | 1. Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology,2.Engineering Research Center of Safety Critical Industrial Measurement and Control Technology, Ministry of Education |
| Wang Jun | 1. Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology |
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| 摘要点击次数: 1422 |
| 全文下载次数: 1146 |
| 中文摘要: |
| 对于高温下的视觉三维测量,如何削弱高温辐射以及成像畸变对构件测量产生的影响,在航空航天和汽车制造等领域
具有极其重要的意义。 基于黑体辐射理论分析了物体在不同温度下的辐射特性,确定了成像光谱范围,建立了高温双目立体视
觉测量模型,运用有限元建模仿真与光线追迹算法相结合的方法分析光线在高温场中传播的偏折规律,并分析了温度和光线波
长对光线偏折量的影响。 最后,通过搭建双目立体视觉测量系统,使用 CMOS 相机、窄带滤光片和平行光源组成的测量系统削
弱高温辐射光的干扰,对分析结果进行实验验证。 实验结果表明,测量系统能够在高温下获得清晰的图像特征;光线追迹算法
分析的结果和实验数据有很好的一致性;相较于常温测量结果,800 ℃ 以下视觉测量结果的误差小于 0. 28 mm,球间距测量标
准差小于 0. 11 mm,能够满足构件在高温环境下的测量需求。 |
| 英文摘要: |
| How to weaken the influence of high temperature radiation and imaging distortion on component measurement is of great
significance in aerospace and automobile manufacturing. In this paper, the radiation characteristics of the object at different temperatures
are analyzed based on the blackbody radiation theory, and the imaging spectral range is determined. The high temperature binocular
stereo vision measurement model is established. The deflection law of light propagation in the high temperature field is analyzed by
combining the finite element modeling simulation and the ray tracing algorithm, and the influence of temperature and light wavelength on
the deflection of light is analyzed. Finally, through the establishment of binocular stereo vision measurement system, the interference of
high-temperature radiation light is weakened by the measurement system composed of CMOS camera, narrow-band filter and parallel light
source, and the analysis results are experimentally verified. The experimental results show that the measurement system can obtain clear
image features at high temperature. The results of ray tracing algorithm analysis are in good agreement with the experimental data;
compared with the normal temperature measurement results, the error of visual measurement results under 800 ℃ is less than 0. 28 mm,
and the standard deviation of ball spacing measurement is less than 0. 11 mm, which can meet the measurement requirements of
components in high temperature environment. |
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