Comparison inspection between ICT images &amp; CAD model based on edge extracting by neural networks

ZENG Li; HE Hong-ju; ZHANG Zhi-bo

doi:10.3788/OPE.20111910.2533

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Comparison inspection between ICT images & CAD model based on edge extracting by neural networks

Article | 更新时间：2020-08-12

- Comparison inspection between ICT images & CAD model based on edge extracting by neural networks
- Optics and Precision Engineering Vol. 19, Issue 10, Pages: 2533-2540(2011)
- 作者机构：
  
  1. 重庆大学数学与统计学院, 重庆 401331
  2. 重庆大学光电技术及系统教育部重点实验室 ICT研究中心, 重庆 400030
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111910.2533
  CLC： TP183;TP391
- Received：18 January 2011，
  
  Revised：27 February 2011，
  
  Published Online：27 October 2011，
  
  Published：25 October 2011
- 稿件说明：
移动端阅览
曾理, 何洪举, 张志波. 基于神经网络边缘提取的工业CT图像与CAD模型的比对检测[J]. 光学精密工程, 2011,19(10): 2533-2540

ZENG Li, HE Hong-ju, ZHANG Zhi-bo . Comparison inspection between ICT images & CAD model based on edge extracting by neural networks[J]. Editorial Office of Optics and Precision Engineering, 2011,19(10): 2533-2540
曾理, 何洪举, 张志波. 基于神经网络边缘提取的工业CT图像与CAD模型的比对检测[J]. 光学精密工程, 2011,19(10): 2533-2540 DOI： 10.3788/OPE.20111910.2533.

ZENG Li, HE Hong-ju, ZHANG Zhi-bo . Comparison inspection between ICT images & CAD model based on edge extracting by neural networks[J]. Editorial Office of Optics and Precision Engineering, 2011,19(10): 2533-2540 DOI： 10.3788/OPE.20111910.2533.

摘要

研究了一种对工业计算机断层(CT)图像与计算机辅助设计(CAD)模型进行比对检测

分析工件制造误差的方法。首先

用模板自适应细胞神经网络提取工业CT图像边缘

并进行三方向CT切片边缘数据融合处理以获得完整的三维边缘面。然后

先结合主成分分析和最小包围盒的思想对CT边缘面数据与工件的CAD模型实现粗配准

再用奇异值分解-迭代最近点算法对其进行精配准

其中最近点对的求取用

k-d

树进行加速

从而实现对工件制造误差的分析。实验结果显示

文中的方法能够实现工件的比对检测

自动化程度高、能直观显示误差分布且精度高

表明通过改进工件CT图像与CAD模型的比对检测方法

可将工业CT技术用于制造工艺分析与改进中。

Abstract

A method to analyze the manufacture error of a workpiece based on the comparison inspection between Industrial Computed Tomography (ICT) images and Computer Aided Design (CAD) model was discussed. Firstly

the edged surfaces of ICT images were extracted by the Cellular Neural Network (CNN) with adaptive templates and the data were fused in three directions to obtaine the complete 3D edge surfaces. Then

the Principal Component Analysis (PCA) with the method of minimum bounding box were combined to perform a rough registration

and Singular Value Decomposition and Iterative Closest Point (SVD-ICP) algorithm were used to realize the refined registration for the edged surface data and the CAD model. In experiment

the

k-d

tree was used to improve the calculation speed of searching for the closest point. The experimental results validate that the comparison inspection method is automatic

visualized and high-accuracy. By the improved comparison inspection method for ICT images and CAD model

the ICT technology can be used to analyze and improve the manufacturing process.

关键词

Keywords

references

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Comparison inspection between ICT images & CAD model based on edge extracting by neural networks

DOI：10.3788/OPE.20111910.2533

摘要

Abstract

关键词

Keywords

references