摘要
鉴于传统微分边缘检测算法不适用于识别图像中与背景灰度区别较小的弱边缘，提出了基于方差的图像边缘检测算法，并介绍了其原理和算法实现过程。实验表明，该算法能较好检测出背景灰度区别较小的物体边缘，并有一定的抗噪能力，提高了图像边缘俭测效果。
Because of that the edge detection algorithm based differentiation is not used to dectect the weak edge in the image that the difference between object and background is very little. An edge detection algorithm based on variance was designed, and the mechanism and algorithm was introduced. Simulation shows that this algorithm has a high precision in image detection abetter anthoise ability and improving image dection effect.
作者
向华
XIANG Hua （School of Mathematics and Computer Sciences, Jianghan University, Wuhan 430056, China）
出处
《电脑知识与技术》
2009年第11期8790-8791,共2页
Computer Knowledge and Technology
关键词
方差
边缘检测
弱边缘
variance
edge detection
weak edge
