基于调整投影强度的高反光物体三维形貌测量

赵丽伟; 张宗华; 付帅; 孟召宗; 高楠

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基于调整投影强度的高反光物体三维形貌测量

光学传感与测量 | 更新时间：2025-10-09

- 基于调整投影强度的高反光物体三维形貌测量
- Three-dimensional shape measurement of highly reflective objects based on adjusted projection intensity
- 光学技术 2025年51卷第4期页码：504-512
- 作者机构：
  
  河北工业大学机械工程学院，天津 300401
- 作者简介：
  
  赵丽伟（1999—），女，硕士研究生，从事光学三维形貌测量研究。15531838703@163.com
  张宗华（1974—），男，教授，博士，从事光学三维测量、条纹投影轮廓术、相位偏折测量术等方面的研究。zhzhang@hebut.edu.cn
- 基金信息：
  
  国家自然科学基金(U2341275)
- DOI：
  中图分类号： TP394.1;TH691.9
- 收稿：2025-02-19，
  
  修回：2025-04-03，
  
  纸质出版：2025-07-20
- 稿件说明：
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赵丽伟,张宗华,付帅等.基于调整投影强度的高反光物体三维形貌测量[J].光学技术,2025,51(04):504-512.

ZHAO Liwei,ZHANG Zonghua,FU Shuai,et al.Three-dimensional shape measurement of highly reflective objects based on adjusted projection intensity[J].OPTICAL TECHNIQUE,2025,51(04):504-512.
赵丽伟,张宗华,付帅等.基于调整投影强度的高反光物体三维形貌测量[J].光学技术,2025,51(04):504-512. DOI：

ZHAO Liwei,ZHANG Zonghua,FU Shuai,et al.Three-dimensional shape measurement of highly reflective objects based on adjusted projection intensity[J].OPTICAL TECHNIQUE,2025,51(04):504-512. DOI：

摘要

条纹投影轮廓术是获取物体三维形貌最有效的方法之一，但是在测量高反光物体时，需要投影较多条纹图像，且精度不高。为此，提出一种基于调整投影强度的高反光物体三维形貌测量方法。通过计算物体表面系数并根据反射系数分布直方图求解最佳投影强度；结合极线约束和相位信息计算相机和投影仪的坐标对应关系，生成自适应条纹；将自适应条纹投影到被测物体表面实现对物体的三维测量。实验结果表明，测量高反光面台阶时，最大绝对误差为0.0249 mm，比单一投影强度法减少97.8%，比现有调整投影强度法误差减少18.6%，投影图像数量减少18幅。所提方法在减少投影条纹数量的同时提高了测量精度。

Abstract

Fringe projection profilometry is one of the most effective methods to obtain the three-dimensional （3D） shape of objects. However

when measuring highly reflective objects

more fringe images need to be projected

and the accuracy is not high. Therefore

a method for measuring the 3D shape of highly reflective objects based on adjusting projection intensity is proposed. First

the optimum projection intensity is calculated according to the surface coefficient of the object. Then

the coordinate correspondence between camera and projector is calculated according to the polar constraint and phase information

and the adaptive fringe is generated. Finally

the adaptive fringes are projected onto the surface of the object under test to achieve three-dimensional measurement of the object. The experimental results show that when measuring the steps of high reflective surfaces

the maximum absolute error is 0.0249 mm

which is 97.8% less than the method of single projection intensity

18.6% less than the existing method of adjusting projection intensity

and the number of projected images is reduced by 18. The proposed method can reduce the number of projection fringes and improve the measurement accuracy.

关键词

Keywords

references

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