边缘函数 meaning in Chinese

edge function

The system is on the basis of fourier optics . by using knife edge as object , cmos sensor as device for image reception , we get edge spread function from the image histogram and use differential operation and fft to achieve mtf of the lens , then its image quality is obtained
本系统以傅立叶光学为依据，以刀口为目标物，以cmos为图像接收器件，采用独特的算法，从刀口图像的灰度直方图中获得其刀口边缘函数，经微分和fft运算，得到待测镜头的mtf ，从而得知其成像品质。