摘要本课题的目的在于采用双目视觉测量技术进行锻件在线形态尺寸非接触测量，采集锻件在锻造过程高温状态下的图片，通过对采集到的图像进行分析和计算，得到锻件的三维尺寸。

建立锻件热成型过程形态尺寸的视觉传感测量试验系统总体结构；基于透镜变换矩阵的传统标定方法，制作标定块，选择合适摄像头，选取合适波长范围的滤光片，开展模拟试验。选取一块钢板、加热至300℃，分别采集100℃、200℃、300℃下钢板的轮廓图像，对采集的图像进行特征提取，根据标定原理算出钢板尺寸，得出相对误差并分析原因。选取一块铝合金板、加热至300℃，分别采集100℃、200℃、300℃下铝合金板的轮廓图像，对采集的图像进行特征提取，根据标定原理算出钢板尺寸，得出相对误差并分析原因。67687

通过研究图像信号的获取、图像优化、边缘提取，结合摄像机标定方法，设计出测量锻件尺寸的系统。

毕业论文关键词  双目视觉 锻件  非接触测量  标定 滤光片

毕业设计说明书（论文）外文摘要

Title  Technology of measuring wind power spindle thermo forming visual 

Abstract

The purpose of this paper is to do non-contact measurement of wind power main shaft thermal molding process by using binocular vision  measurement, collecting the pictures from forgings forging process under high temperature, using some software to do analysis and  calculations and the three-dimensional size forgings to judge if it meets the requirements of process documents, and lay the foundation of intelligent control quality forgings thermo forming.

Shape forging process to establish the size of thermoforming visual sensing measurement test system architecture; lens transformation  matrix based on traditional calibration methods, producting calibration block, choose the right camera, to carry out simulation tests. Select a steel plate heated to 300 ℃, respectively collecting the plate contour image under100 ℃, 200 ℃, 300 ℃ , doing the collected image feature extraction, calculating the plate size according to the principle of the calibration draw and analyze the reasons for the relative error. Select a aluminum alloy plate heated to 300 ℃, respectively collecting the aluminum alloy  plate contour image under100 ℃, 200 ℃, 300 ℃ , doing the collected image feature extraction, calculating the plate size according to the principle of the calibration draw and analyze the reasons for the relative error.

By studying the image signal acquisition, image optimization, edge extraction, with camera calibration method to design the size of the measurement system forging.

Keywords  binocular vision, forgings, non-contact measurement, calibration

目次

1   绪论 1

1.1   课题研究背景 1

1.2   国内外相关技术研究现状 2

1.3   双目视觉测量方法 4

1.4   课题主要研究内容 8

2   大尺寸锻件双目视觉测量系统的建立及标定试验 8

2.1   大尺寸锻件双目视觉测量系统结构建立 8

2.2   大尺寸锻件双目视觉测量系统的搭建 9

2.3   大尺寸锻件双目视觉测量系统标定方法的确定 10

3   大尺寸锻件双目视觉测量系统模拟试验 17