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微热弯成形的微位移计算机视觉测量方法
引用本文:孙林林,李伯全,蔡孝燕,许桢英.微热弯成形的微位移计算机视觉测量方法[J].南京气象学院学报,2011(5):427-430.
作者姓名:孙林林  李伯全  蔡孝燕  许桢英
作者单位:江苏大学机械工程学院 镇江 212013;江苏大学机械工程学院 镇江 212013;江苏大学机械工程学院 镇江 212013;江苏大学机械工程学院 镇江 212013
基金项目:国家自然科学基金(508050-69);中国博士后基金(20090451174)
摘    要:为实现微热弯成形系统中微位移的高精度测量,构建了微位移计算机视觉测量系统.应用Matlab编写摄像机标定程序并计算摄像机的内外参数,利用OpenCV对被测对象的图像进行灰度化、二值化和Canny边缘提取,采用序贯相似性检测算法(SSDA)进行模板匹配,实现了热弯曲成形过程中模具与工件位置微位移的实时在线检测.实验结果表明,该系统对微位移的测量具有操作简单、高效的特点.

关 键 词:微位移  视觉测量  Canny边缘检测  序贯相似  OpenCV(计算机视觉开放库)
收稿时间:2011/7/20 0:00:00

Micro-displacement measurement of computer vision for micro-bending forming
SUN Linlin,LI Boquan,CAI Xiaoyan and XU Zhenying.Micro-displacement measurement of computer vision for micro-bending forming[J].Journal of Nanjing Institute of Meteorology,2011(5):427-430.
Authors:SUN Linlin  LI Boquan  CAI Xiaoyan and XU Zhenying
Institution:School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013;School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013;School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013;School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013
Abstract:The focus of the work is to build a micro-displacement measurement of computer vision for micro-bending forming with high measuring accuracy.Matlab was utilized to write camera calibration program,and the internal and external parameters of the camera was calculated.The method made use of OpenCV to conduct gray level transformation,image binary,Canny edge extraction,and adopted sequential similarity detection algorithm to carry out template matching.Results indicate that the measurement method of micro-displacement is simple in operation with high efficiency.
Keywords:micro-displacement  vision measurement  Canny edge detection  sequential similarity  OpenCV(Open Source Computer Vision)
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