| 基于圆点阵列靶标的特征点坐标自动提取方法 |
| |
| 引用本文： | 夏瑞雪,卢荣胜,刘宁,董敬涛.基于圆点阵列靶标的特征点坐标自动提取方法[J].中国机械工程,2010(16). |
| |
| 作者姓名： | 夏瑞雪 卢荣胜 刘宁 董敬涛 |
| |
| 作者单位： | 合肥工业大学; |
| |
| 基金项目： | 国家863高技术研究发展计划资助项目(2009AA04Z114) |
| |
| 摘 要： | 以用于摄像机标定的2D平面圆点阵列靶标为研究对象,提出一种在复杂背景环境下,无需人工干预,自动提取靶标标定特征点图像坐标的方法。对摄像机标定图像进行自适应阈值分割,将其转换为由多个连通区域组成的黑白二值图像,根据靶标图案的形态特征,首先对图像上的连通区域进行面积判断,初步剔除非目标区域;然后对其进行特征识别,提取出靶标图案区域;再对靶标图案区域进行轮廓提取,使用最小二乘椭圆拟合的方法,计算得到靶标各圆点中心的图像坐标;最后对各标定特征点进行定位操作,确定其所对应的圆点在7×7圆点矩阵中的位置。
|
| 关 键 词： | 摄像机标定 圆点阵列靶标 连通区域 椭圆拟合 |
A Method of Automatic Extracting Feature Point Coordinates Based on Circle Array Target |
| |
| Xia Ruixue Lu Rongsheng Liu Ning Dong Jingtao Hefei University of Technology,Hefei.A Method of Automatic Extracting Feature Point Coordinates Based on Circle Array Target[J].China Mechanical Engineering,2010(16). |
| |
| Authors: | Xia Ruixue Lu Rongsheng Liu Ning Dong Jingtao Hefei University of Technology Hefei |
| |
| Affiliation: | Xia Ruixue Lu Rongsheng Liu Ning Dong Jingtao Hefei University of Technology,Hefei,230009 |
| |
| Abstract: | This paper proposed a method of automatic extracting feature point coordinates for 2D circle array target in complex background environment,which was used for camera calibration.The grey-scale image was converted into a binary image,which was composed by a multitude of connection areas,using adaptive thresholding algorithm.Firstly,the connection areas were judged by area to eliminate non-target regions.Secondly,the target region was identified by its morphological characteristics,and then its contour was ex... |
| |
| Keywords: | camera calibration circle array target connection area ellipse fitting |
| 本文献已被 CNKI 等数据库收录！ |
|
