数字摄影测量中椭圆的高效检测方法  

Efficient ellipse detection method in digital photogrammetry

作　　者：齐晓娟[1] 董明利[1] 王君[1] 吕乃光[1] 

机构地区：[1]北京机械工业学院电子信息工程系,北京100085

出　　处：《北京机械工业学院学报》2005年第4期5-7,共3页Journal of Beijing Institute of Machinery

基　　金：北京市优秀人才培养专项经费资助[项目编号:20041D0500601];北京市重点实验室(机电测控系统)开放课题[项目编号:030315]

摘　　要：数字摄影测量中,为了提高图像匹配自动化程度和匹配率,快速、高效地检测椭圆是关键的技术。给出了一种高效的椭圆检测方法,该方法利用椭圆的长轴信息,能够快速、准确地计算出椭圆其它4个参数。该方法在实现过程中仅仅需要一个一维的累加数组累计某一长度短轴的个数信息,不需要计算曲线的边缘轮廓,所以此算法的计算量小,处理时间短,占用内存空间小。椭圆检测结果表明,该方法具有速度快,占用内存小及检测性能好等优点。In digital photogrammetry, ellipse detection veracity and automation degree. In this paper, a high is the key technology to improve image matching efficient ellipse detection approach is introduced. Major axis of the ellipse is used to calculate other ellipse parameters fast and efficiently. Only a one-dimensional accumulator array to accumulate the length information for minor axis of the ellipse is needed in the method without requirement of the evaluation of the curvature of the edge contours. No complicated mathematical computation is involved in the implementation and the required computational time and storage space are much less compared to the current methods. The result of ellipse detection shows that this method has the advantages of high speed, small storage and high detection performance.

关 键 词：HOUGH 变换 椭圆检测 图像处理 计算机视觉 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]