C#写的一个边缘提取的程序，以界面形式选择图片，包含了sobel算子、Laplace算子、canny算子三种检测算法可选。-C# to write an edge extraction process to select the interface in the form of pictures, including the sobel operator, Laplace operator, canny operator selectable three detection algorithms

调用EmguCV库，进行Canny角点提取(Call the EmguCV library for Cannycorner extraction)