视觉测量中椭圆自动检测与定位方法-山西大学计算机与信息技术学院.PDFVIP

Computer Engineering and Applications 计算机工程与应用 2011 ，47 （17） 169 视觉测量中椭圆自动检测与定位方法 1 1 2 韩建栋 ，杨红菊 ，吕乃光 1 1 2 HAN Jiandong ，YANG Hongju ，LV Naiguang 1.山西大学 计算机与信息技术学院，计算智能与中文信息处理教育部重点实验室，太原 030006 2.北京信息科技大学 光电信息与通信工程学院，北京 100192 1.Key Lab of Ministry of Education for Computational Intelligence and Chinese Information Processing ，School of Computer and Information Technology ，Shanxi University ，Taiyuan 030006 ，China 2.School of Optoelectronic Information and Telecommunication Engineering ，Beijing University of Information Science and Technology ，Beijing 100192，China HAN Jiandong ，YANG Hongju ，LV Naiguang.Automated ellipse detection and location method in 3D visual inspection. Computer Engineering and Applications ，2011 ，47 （17）：169-171. Abstract ：In order to solve the problems in 3D vision measurement such as low inspection efficiency and low location pre- cision and so on ，an efficient method of ellipse detection and location is proposed.Using high-reflective characteristic of the retro-reflective targets ，the Canny detector is applied to the gray level image in order to obtain a binary edge-map.Edge con- tours points are extracted from the edge-map and divided into several groups according to the continuity.Ellipse objects can be recognized by using major axis information of an ellipse.An ellipse fitting method based on the Heteroscedastic Er- rors-In-Variable （HEIV ）model is applied to realize the precision locating of the ellipse objects.Experimental results show that the method has such advantages as fast speed ，automation ，high precision and good robustness and can be extensively applied to the vision measurement. Key words ：vision measurement ；ellipse detection ；edge extraction ；ellipse fitting 摘 要：针对视觉测量中椭圆目标的检测效率与定位精度较低的问题，提出一种高效的椭圆识别与定位方法。该方法利用回光 反射控制点的强反射特性，提取目标的边缘信息，对连续的边