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基于二值条纹三维测量的相位补偿方法
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作者单位:

1.南京信息工程大学自动化学院 南京 210044; 2.江苏省大气环境与装备技术协同创新中心 南京 210044; 3.江苏省智能气象探测机器人工程研究中心 南京 210044

中图分类号:

TP391

基金项目:

国家自然科学基金(61605083)、江苏省产业前瞻与关键核心技术重点项目（BE2020006-2）资助


Phase compensation method based on three-dimensional measurement of binary fringe
Author:
Affiliation:

1.College of Automation, Nanjing University of Information Science and Technology，Nanjing 210044, China;2.Jiangsu Provincial Collaborative Innovation Center for Atmospheric Environment and Equipment Technology，Nanjing 210044, China; 3.Jiangsu Province Engineering Research Center of Intelligent Meteorological Exploration Robot，Nanjing 210044, China

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    摘要:

    快速三维测量在工业检测、逆向工程领域得到广泛应用，提出一种基于二值条纹解相的三维测量方法。首先，通过投影1幅二值条纹图像，利用条纹级次分布特点，将携带物体相位信息的图像分割成两个条纹掩膜，利用连通域对白色像素点进行阶梯式标记，以此获得条纹级次。其次，由于环境噪声等干扰因素导致解相时出现跳变误差，因此提出了通过融合半周期位移级次的方法来对相位进行补偿，利用解相的二值条纹来获取半周期错位的互补级次。最后，根据条纹级次和互补级次实现解相进行实验验证。实验结果表明，本文方法解决了相位展开时出现的毛刺问题，并以平板为测量对象，利用本文方法测得的均方根误差为0.198 0 mm，且只需要1幅图像即可完成解相，具有良好的鲁棒性和有效性，可应用于快速测量领域。

    Abstract:

    Rapid 3D measurement has been widely used in industrial testing and reverse engineering. In this paper, a 3D measurement method based on binary fringe phase solution is proposed. Firstly, by projecting a binary fringe image, the image carrying the phase information of the object is divided into two fringe masks by utilizing the fringe order distribution characteristics, and the white pixels are marked by steps using the connected domain, so as to obtain the fringe order. Secondly, due to the interference factors such as environmental noise, hopping error occurs during unwrapping phase. Therefore, a method is proposed to compensate the phase by integrating the half-periodic displacement order, and the complementary order of the half-periodic dislocation is obtained by using the binary fringe of unwrapping phase. Finally, the phase unwrapped are verified experimentally according to fringe order and complementary order. Experimental results show that the proposed method solves the burr problem in the phase unwrapping process. Taking the flat plate as the measurement object, the root-mean-square error measured by the proposed method is 0.198 0 mm, and only one image is needed to complete the phase unwrapping. The proposed method has good robustness and effectiveness, and can be applied to the field of rapid measurement.

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严飞,肖雨倩,路长秋,文杰,刘佳.基于二值条纹三维测量的相位补偿方法[J].电子测量技术,2023,46(21):143-150

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  • 在线发布日期: 2024-03-04
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