一种基于高阶曲面拟合的图像边缘检测方法

提出一种基于高阶曲面拟合的边缘检测方法,首先对图像进行自适应Wiener滤波,然后用一个邻域内的像素点来拟合一个高阶曲面,由此计算该点的梯度值,再依据梯度方向对梯度值进行抑制,最后依据统计特性选取阈值,得到边缘图像.仿真实验表明,该方法计算梯度准确,定位精度较其他方法更高,适合各种类型的边缘.

A Method of Edge Image Detection Based on Higher Order Surface Fitting

An image edge detection method based on higher order curue fitting was presented in this paper.Firstly,the adaptive wiener filter was used for image filter.Secondly,a higher order surface was fitted with neighbor pixels and the gradient was calculated.Then,gradient direction was used to supress the gradient.Finally,the thresh was chosen with statistical method and the edge image was obtained.Tthe simulation results show the gradient is more accurate,the position precision is higher than other methods and it...