任意相移最小二乘法迭代的在线三维检测

武迎春; 曹益平; 肖焱山

doi:10.3788/OPE.20142205.1347

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任意相移最小二乘法迭代的在线三维检测

信息科学 | 更新时间：2020-08-13

- 任意相移最小二乘法迭代的在线三维检测
- On-line three-dimensional inspection using randomly phase-shifting fringe based on least-square iteration
- 光学精密工程 2014年22卷第5期页码：1347-1353
- 作者机构：
  
  1. 四川大学电子信息学院,四川成都,610065
  2. 太原科技大学电子信息工程学院,山西太原,030024
- 作者简介：
- 基金信息：
  
  国家863高技术研究发展计划资助项目（No.2007AA01Z333）();国家重大科技专项资助项目（No.2009ZX02204-008）();四川省学术和技术带头人
- DOI：10.3788/OPE.20142205.1347
  中图分类号： TB92;O436.1
- 收稿日期：2013-08-16，
  
  修回日期：2013-09-29，
  
  纸质出版日期：2014-05-25
- 稿件说明：
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武迎春, 曹益平, 肖焱山. 任意相移最小二乘法迭代的在线三维检测[J]. 光学精密工程, 2014,22(5): 1347-1353

WU Ying-chun, CAO Yi-ping, XIAO Yan-shan. On-line three-dimensional inspection using randomly phase-shifting fringe based on least-square iteration[J]. Editorial Office of Optics and Precision Engineering, 2014,22(5): 1347-1353
武迎春, 曹益平, 肖焱山. 任意相移最小二乘法迭代的在线三维检测[J]. 光学精密工程, 2014,22(5): 1347-1353 DOI： 10.3788/OPE.20142205.1347.

WU Ying-chun, CAO Yi-ping, XIAO Yan-shan. On-line three-dimensional inspection using randomly phase-shifting fringe based on least-square iteration[J]. Editorial Office of Optics and Precision Engineering, 2014,22(5): 1347-1353 DOI： 10.3788/OPE.20142205.1347.

摘要

为了简化采用满周期等相移算法的在线相位测量轮廓术（PMP）在实际测量过程中系统装调环节的繁杂程度，同时避免栅线方向和运动方向不严格平行引入附加相移降低解相精度，提出了基于最小二乘法迭代的在线三维检测方法。在测量过程中，任意栅线方向的正弦光栅被投影于物体表面，采用像素匹配技术获得不同时刻拍摄到的变形条纹图的等效相移条纹图，其相移量由投影系统和物体位移共同决定且为任意值。最后，采用最小二乘法迭代计算相位。实验结果表明：在不断改变投影到参考面上光栅栅线方向的情况下，该系统的测量结果稳定，均方根误差均不高于0.1699mm。由于该方法放宽了测量系统空间位置的约束条件，提高了测量的灵活程度，使在线PMP更具普适性。

Abstract

An on-line Phase Measuring Profilometry (PMP) based on least-square iteration was proposed to simplify the complexities of system installment and to avoid the influence of additional phase-shifting caused by the non-parallelism between grating lines and object's displacement in the PMP based on synchronous detection. In measurement processing

the sinusoidal grating with arbitrary grid line direction was projected onto an object

and a CCD was used to capture the deformed fringe patterns. After pixel matching

fringe patterns were used to evaluate the phase distribution. The phase-shifting was determined as arbitrary values by both projection system and object's displacement. Finally

the least-square iteration was used to calculate the phases. The experiment result shows when the grating line directions on the reference plane are changed

the measurement results are stable

and the root-mean-square error is less than 0.169 9 mm.It concludes that the proposed method relaxes the restriction of the spatial location of measurement equipment

increases the measurement flexibility and makes the PMP more applicable.

关键词

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references

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