摘要
针对图像中存在的对数螺旋线形状,提出了一种有效的对数螺旋线拟合方法。首先根据螺旋线的性质将已知图像中螺旋线的中心点约束在一个较小的区域内进行搜索,然后将从图像中获取的直角坐标系下的数据点通过坐标变换转换为能用直线形式表示的数据点,将对对数螺旋线的拟合转换为对直线的拟合。这一方法能快速、准确地拟合出图像中存在的对数螺旋线。
For the log spiral which generates in a image,a method of log spiral fitting is presented.It firstly finds a searching region which contains the center of logarithmic spiral.The searching region can be narrowed by the use of the nature of logarithmic spiral.Then,transform the data points of Cartesian coordinates to the other forms which can meet the linear equation.The logarithmic spiral fitting can converted to linear fitting.Experimental results show that this method is capable to fit log spiral fast and accurately.
出处
《微型机与应用》
2011年第12期44-46,50,共4页
Microcomputer & Its Applications
关键词
坐标系变换
旋转角
对数螺旋线拟合
transformed coordinate system
angle of rotation
logarithmic spiral fitting
