Modulation Transfer Function for Two-Point and Periodic Objects Using Gaussian and Lorentzian Resolution Functions

摘要

This paper presents an analytical study of the effect of Gaussian- and Lorentzian-shaped line spread functions in non-coherent noise-free imaging systems. A mathematic development is given for the calculation of the Modulation Transfer Function (MTF). This technique is used to calculate the MTF for two-point and periodic objects using Gaussian and Lorentzian resolution functions. Figures and graphs are used to illustrate the comparison of the results. Relationships between the results obtained are developed that are useful in the interpretation of experiments used to determine the resolution of experimental systems. The development covers only noise-free, incoherent, one-dimensional systems.