图像的旋转是指以图像中的某一点为原点以逆时针或顺时针方向旋转一定的角度。旋转为计算长短轴等图像的参数提供了基础。-Image rotation refers to a point of the image for the anti-clockwise or clockwise rotating a certain angle. Rotation use for the purpose of calculating the anxis length of the parameters of suc