A new technique was presented and proved by knife-edgemethod.
在传统的刃边法基础上，介绍并验证了一种新的点靶标方法。
2
So far people have put forward some basic methods for evaluate the MTF values of the lens, such as knife-edgemethod, laser speckle method and extended frequency aperture (EFA) method.
迄今为止，人们已经提出了诸如刃边法、激光散斑法、扩展频率孔径法等多种测量离散成像器件MTF的方法。
3
Universally analyzed and discussed in this paper is the visualization of inhomogeneous phase distribution of phase objects with spatial zero frequency filtering and knifeedge filtering method.