本文首先介绍了边缘的定义，说明了传统的几种边缘检测算子并比较了它们算法的不同与优缺点。随后引入了小波的思想、小波的基本概念， -This paper introduces the edge of the definition, Note some of the traditional edge detection operators and compare them with the different algorithms advantages and disadvantages. The subsequent introduction of wavelet thinking, wavelet the basic concepts,