本文主要探讨了中值滤波以及高斯滤波两个空间低通滤波器，结合unsharp masking,、Canny 算子、Sobel算子、以及Laplace算子研究了高通滤波器的特性，掌握了边缘检测技术的原理，并对这一系列技术进行了对比。

doc文档最后附有USM、Sobel等算子实现的matlab源代码-This paper discusses the median filtering and Gaussian filtering both spatial low-pass filter, combined with unsharp masking,, Canny operator, Sobel operator, as well as to study the properties of the Laplace operator of high-pass filter, edge detection technique mastered the principles of , and this series of techniques were compared. doc document was last with USM, Sobel and other operators to achieve matlab source code