An Adaptive Grating Pitch Measurement Method

SUN Kui; ZHANG Sheng; CHEN Ya-qun; CHEN Jian-fei

doi:10.13756/j.gtxyj.2017.03.009

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An Adaptive Grating Pitch Measurement Method

- An Adaptive Grating Pitch Measurement Method
- Study on Optical communication Issue 3, Pages: 33-36(2017)
- 作者机构：
  
  南京邮电大学光电工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2017.03.009
  CLC： TP391.41
- Published：2017，
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[1]孙奎,张胜,陈亚群,陈建飞.节距自适应三维目标光栅测量方法[J].光通信研究,2017(03):33-36.

SUN Kui, ZHANG Sheng, CHEN Ya-qun, et al. An Adaptive Grating Pitch Measurement Method. [J]. (3):33-36(2017)
[1]孙奎,张胜,陈亚群,陈建飞.节距自适应三维目标光栅测量方法[J].光通信研究,2017(03):33-36. DOI： 10.13756/j.gtxyj.2017.03.009.

SUN Kui, ZHANG Sheng, CHEN Ya-qun, et al. An Adaptive Grating Pitch Measurement Method. [J]. (3):33-36(2017) DOI： 10.13756/j.gtxyj.2017.03.009.

摘要

针对三维光栅测量中难以有效设置光栅节距实现高精度测量的问题

提出了一种节距自适应三维目标光栅测量方法

其实现过程如下:首先基于大节距光栅获取物体的轮廓;然后采用非联通区域划分法

按轮廓对目标区域进行划分

再分区调整光栅节距

进行二次投影;最后依据光栅节距按区域重建

实现三维目标高精度测量。仿真结果表明

与传统四步相移法相比

该方法通过自适应调整光栅节距

使测量精度提高了6.78%

表明该方法能较好地实现三维目标的精确测量

具有较高的实用价值。

Abstract

In order to solve the problem of high precision measurement of grating pitch in three-dimensional grating measurement

an adaptive three-dimensional object grating pitch measurement method is presented in this paper.Its implementation processes are as follows:obtain the object outline based on a large pitch grating;according to the achieve outline

divide the target area by non-Unicom zoning laws;adjust the partition grating pitch and take second projection;according to the divided target area

reconstruct the three-dimensional object to achieve high-precision measurement regionally.The simulation results show that compared to the traditional four-step phase shift method

the measurement accuracy of the proposed method（with the adaptive grating pitch）is increased by 6.78%

indicating that the proposed method can achieve the three-dimensional object measurement more accurately

which also has good practical value.

关键词

三维测量光栅节距自适应区域划分

Keywords

three-dimensional measurementgrating pitchadaptiveregion division

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