图像比对工具

可以将图像轮廓化，然后进行比对

可以清晰的看到图像的不同处，同时具有图形加宽、加高，用来校正图像的轻微变形-image right tools contours of the image, then can be compared to see a clear picture of the differences, Widening the same time graphics, height, to a minor correction image deformation