Algorithm of Image Edge Detection Based on Rough Set and Edge Information Meausure

Basing on rough set thinking,and combining with the edge information measure,a new edge detection algorithm is proposed.At first,the definitin of edge detection measure and its property is presened.Then pixels of image are classified by the properties of noises and edge detection measure.Setting the appriate threshold,the edge points and non-edge points are distinguished,and the true edge is found.The experimental results show that this algorithm can not only effectively reduce the noises of the image,but also can precisely detect the edge position,and keep the image edges' details well,compute quickly.