基于灰度图像和矢量的圆心定位

被引:6
作者
曹建海
路长厚
机构
[1] 山东大学机械工程学院
[2] 山东大学机械工程学院 济南
[3] 济南
关键词
圆周投影; 矢量和; 特征抽取; 圆心定位;
D O I
10.16136/j.joel.2004.06.022
中图分类号
TP391.43 []; TP751. [];
学科分类号
0811 ; 081101 ; 081104 ; 1405 ; 081002 ;
摘要
提出了基于矢量和的全局最优的圆心定位方法,并利用卷乘和频域方法实现定位的快速算法。该方法是基于灰度图像上进行圆心定位和圆周投影,不仅可以尽量多地保持原始字符图像的特征信息,而且克服了传统的基于二值化图像进行圆心定位时,过分依赖于二值化算法、抗干扰性差等弊病。实验表明,方法定位的圆心坐标的准确度和一致性都好于形心法或质心法,而且有较好的抗干扰性。
引用
收藏
页码:714 / 718
页数:5
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