圖片興場碰撞偵察，及上下左右控制-Photo-field collision detection, and control levels have

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 s