彩色梯度相移与格雷码相结合的三维测量方法

单鹂娜; 于晓洋; 于双; 吴海滨; 陈德运

doi:10.3788/OPE.20101811.2497

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彩色梯度相移与格雷码相结合的三维测量方法

信息科学 | 更新时间：2020-08-12

- 彩色梯度相移与格雷码相结合的三维测量方法
- Three dimensional measurement method combining color trapezoidal phase-shifting with color gray code
- 光学精密工程 2010年18卷第11期页码：2497-2504
- 作者机构：
  
  哈尔滨理工大学测控技术与仪器黑龙江省高校重点实验室,黑龙江哈尔滨,150080
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.60572030)();哈尔滨市重点科技攻关项目(No.2005AA1CG152)();哈尔滨理工大学优秀学科带头人资助项目()
- DOI：10.3788/OPE.20101811.2497
  中图分类号： TB92;TP391
- 收稿日期：2010-02-10，
  
  修回日期：2010-05-28，
  
  网络出版日期：2010-11-25，
  
  纸质出版日期：2010-11-25
- 稿件说明：
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单鹂娜, 于晓洋, 于双, 吴海滨, 陈德运. 彩色梯度相移与格雷码相结合的三维测量方法[J]. 光学精密工程, 2010,18(11): 2497-2504

SHAN Li-na, YU Xiao-yang, YU Shuang, WU Hai-bin, CHEN De-yun. Three dimensional measurement method combining color trapezoidal phase-shifting with color gray code[J]. Editorial Office of Optics and Precision Engineering, 2010,18(11): 2497-2504
单鹂娜, 于晓洋, 于双, 吴海滨, 陈德运. 彩色梯度相移与格雷码相结合的三维测量方法[J]. 光学精密工程, 2010,18(11): 2497-2504 DOI： 10.3788/OPE.20101811.2497.

SHAN Li-na, YU Xiao-yang, YU Shuang, WU Hai-bin, CHEN De-yun. Three dimensional measurement method combining color trapezoidal phase-shifting with color gray code[J]. Editorial Office of Optics and Precision Engineering, 2010,18(11): 2497-2504 DOI： 10.3788/OPE.20101811.2497.

摘要

为了实现高分辨率快速非接触式三维测量

将彩色梯度相移法与格雷码相结合

提出了三维测量算法。将一幅彩色梯形三步相移图案和两幅彩色格雷码图案相结合

对测量空间进行编解码;通过两幅彩色格雷码图案将测量空间可靠地分成64个子空间

通过一幅重复彩色梯形三步相移图案将每个子空间分成6个区域

每个区域再通过强度比细分到像素级。给出了编码图案和解码公式

组建了彩色结构光三维测量系统

并分别采用彩色梯形相移法和本文提出的方法对深度为700~950 nm的平面进行了仿真和实际测量。理论分析、仿真与实际测量结果表明

得到的测量平均误差<0.9 mm

测量标准差<1.2 mm。最后

采用本文方法对石膏和人体进行了测量实验

结果显示该方法具有抗干扰能力强、运算速度快的优点。

Abstract

By combining the color trapezoidal phase-shifting with the Gray code

a color structured light three-dimensional measurement method was presented to achieve a fast high-resolution non-contact 3D measurement. In the measurement

the measured space was encoded and decoded by combining a color trapezoidal three-step phase-shifting pattern with two color gray code patterns.The measured space was divided into 64 sub-spaces by two color gray code patterns. Then

the each sub-space was divided into 6 regions by a repeat color trapezoidal three-step phase-shifting pattern

and each region was subdivided into the pixel through the intensity ratio. The encoding patterns and the decoding formulas were provided

and the color structured-light three-dimensional measurement system was set up. Furthermore

the planes with the deepth of 700~950 mm were measured by the proposed method and a color trapezoidal phase-shifting method

respectively.The theoretical analysis

simulation and actual measurement results indicate that the measurement average error of planes is less than 0.9 mm and the measurement standard deviation is less than 1.2 mm. Finally the proposed method was also used in measuring the plaster face and a real hand

and the results show that this method has advantages in a strong anti-interference ability and fast computing speed.

关键词

Keywords

references

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