机器视觉作业的文档。包括键盘字符的检测，圆环的提取和拟合计算，颜色的识别鉴定。具体的代码我也有上传的，需要的可以自己搜索的。-Machine vision operation documents. Including keyboard characters of detection and circle fitting calculation, and the extraction of color identification of. Specific code I have uploaded