本程序通过对图像进行灰度化、去噪和边缘提取，能检测出不垂直的刻度线边缘并能将其旋转校正，从而达到使刻度线标准化的目的-This procedure of gray-scale images, and de-noising and edge detection can not detect the edge of the vertical line of the scale and be able to spin correction, so as to achieve so that the p