摘要本课题研制了基于机器视觉的轴承固定环内外径检测系统，本系统的研制旨在代替原有的人工检测的方法，提高检测精度，减少人力，满足现如今高度发达的科技社会的需求。本文主要讲述的是轴承固定环内外径检测算法的原理及实现，算法的核心是图像中圆的内外径检测，采用基于图像金字塔的方法，与传统的Hough变换法相比较，得到一个检测工件的最佳方法，但要广泛应用于工业生产中可能还需要得到更多的检验。65220

关键词  机器视觉  轴承环  图像金字塔  工业生产

毕业设计说明书（论文）外文摘要

Title   The development of bearing retaining ring size  

        measurement based on machine vision             

Abstract

This project develops a system based on machine vision which detects the inner and outer diameter of the fixed ring of bearings.The development of the system is aimed at replacing the manual inspection,improving the detection accuracy and reducing labor,to meet the need of the technological society recently.This passage proposes a algorithm about detecting the inner and outer diameter of the fixed ring of bearings and implements it.The core algorithm is to detect the inner and outer diameter of the circle in the image which uses image pyramids.Compared to the traditional methods---Hough Transform,we obtain a best way to detect the piece ,but it may also need more inspection when widely used in industrial production.

Keywords   Machine vision;  Bearing ring;  Image pyramid;  Industrial  

           production

目录

1   绪论...............................................................................................................1

1.1 课题研究的目的及意义................................................................................2

1.2 本论文完成工作及安排................................................................................2

2   轴承固定环内外径检测算法.......................................................................4

2.1 工作平台及硬件设备介绍............................................................................4

2.2 算法流程........................................................................................................5

2.3 图像金字塔....................................................................................................6

2.3.1 预处理.........................................................................................................6

2.3.2 降采样.........................................................................................................8

2.3.3 最佳拟合圆的获得....................................................................................10

2.4 算法的实现...................................................................................................13

2.4.1主要函数的调用关系 ...............................................................................13

2.4.2 主要子函数功能........................................................................................15

2.5 本章小结.......................................................................................................17

3 实验结果及问题分析......................................................................................18

3.1 实验结果.......................................................................................................18

3.2 问题分析.......................................................................................................19