轮廓识别，矩形检测，同时也包含部分基于不变矩的最佳匹配代码-the code used to detect and redraw contours such as rectangle,it also include some code best match based on MCvHuMoments

基于C# 调用halcon的库函数，进行轮廓匹配，快速搭配C#下的机器视觉-Based on the C# call Halcon library functions, contour matching, fast collocation C# machine vision