Denoising method for shape measurement based on three wavelength phase shift profilometry

DING Ming-jun; XI Jiang-tao; LI Guang-xu; SONG Li-mei

doi:10.3788/OPE.20172513.0297

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Denoising method for shape measurement based on three wavelength phase shift profilometry

更新时间：2020-08-13

- Denoising method for shape measurement based on three wavelength phase shift profilometry
- Optics and Precision Engineering Vol. 25, Issue 10s, Pages: 297-303(2017)
- 作者机构：
  
  1. 天津工业大学电子与信息工程学院天津,300387
  2. 天津市光电检测技术与系统重点实验室, 天津 300387
  3. 伍伦贡大学电气、计算机与通信工程学院, 新南威尔士州澳大利亚 2522
  4. 天津工业大学电气工程与自动化学院, 天津 300387
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172513.0297
  CLC： TP394.41
- Received：24 April 2017，
  
  Revised：18 May 2017，
  
  Published：25 November 2017
- 稿件说明：
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丁明君, 习江涛, 李光旭等. 基于三波长相移轮廓术的表面测量降噪[J]. 光学精密工程, 2017,25(10s): 297-303

DING Ming-jun, XI Jiang-tao, LI Guang-xu etc. Denoising method for shape measurement based on three wavelength phase shift profilometry[J]. Editorial Office of Optics and Precision Engineering, 2017,25(10s): 297-303
丁明君, 习江涛, 李光旭等. 基于三波长相移轮廓术的表面测量降噪[J]. 光学精密工程, 2017,25(10s): 297-303 DOI： 10.3788/OPE.20172513.0297.

DING Ming-jun, XI Jiang-tao, LI Guang-xu etc. Denoising method for shape measurement based on three wavelength phase shift profilometry[J]. Editorial Office of Optics and Precision Engineering, 2017,25(10s): 297-303 DOI： 10.3788/OPE.20172513.0297.

摘要

为了改进利用相移轮廓术方法（PSP）对三维物体表面测量时的噪声问题，本文提出了一种基于三波长的相移轮廓术测量方法。首先，在研究等效波长和包裹相位的正问题基础上求解等效波长的相位。其次，推导三个独立光波的相位解卷绕方程。最后，利用相位分析方法去除相位噪声。本研究自行设计了测量系统，分别测量了标定板和复杂三维物体表面形状。与格雷码方法和多波长相移轮廓术方法相比，利用本方法对三维物体表面测量时噪声点减少98.02%，三维重建速度提高了12%。实验及分析结果显示该方法具有更好的鲁棒性和测量精度，并极大地提高了表面测量的噪声抑制能力。

Abstract

In order to reduce noise points in shape measurement of 3D objects using Phase Shift Profilometry (PSP) methods

a novel Three Wave Length PSP (TWPSP) method was investigated. Firstly

relevant problems of equivalent wavelength and unwrapped phase were analyzed. Then

the solution of unwrapping method for TWPSP was derived. Finally

global phase filtering based method was used to reduce the phase noises. The measurement system was designed to measure the calibration target as well as the complicated shape target. Experimental results show that the noisy points of three-dimensional graphics are reduced by 98.02%

and the speed of 3D reconstruction is raised by 12%. The experiment and analysis results show that this system has better robust and higher measurement accuracy

thus the noises in the shape measurement can be suppressed significantly.

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Keywords

references

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Related Institution

School of Electronic Engineering and Automation， Guilin University of Electronic Technology

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