圆和椭圆边缘检测的快速方法

Fast detection for edges of circle and ellipse

利用图形边界对偶点及其平移、缩放和旋转的不变性质 ,结合 Hough变换 ,建立圆和椭圆边缘快速检测的算法 ,并且弥补了文 [1 ]和 [3]中关于圆和椭圆计算公式的缺陷 .实验例子表明本文方法不仅简便、计算速度快、对噪声不敏感 。

Based on the Hough transform,a quick algorithm for the edge detection of circles and ellipses is presented by using a pair of points of pictures as well as their invariants under translation、scale and rotation in this paper.The shortages in Ref\\. are replenished.The experiment examples indicate that the algorithm is easy in use,high of calculation speed,insensitive for noise and can be flexibly used for some difficult edge detection problems.