采用投影求和统计图像的整列信息，对应图像的频域变换图像的黑带，用Round(kN／a)自动搜索得到最小值点，简易的与左右相邻2个像素比较判断最小值点，将两最小值点相减即得任意角度的运动模糊长度-Sum projection images using statistical information on the entire column, corresponding to the frequency domain transform image image Black Belt, with the Round (kN/a) automatic search by the minimum point, a simple left and right adjacent to two pixels to determine the minimum point of comparison, subtracting the minimum point of the two derived length at any angle of motion blur