Испытательное изображение - кольца Френеля

Vargin P. S. Test image - Fresnel rings. PP. - . Mathematical models of discretization of test images in the form of Fresnel rings are obtained. Test images with sinusoidal and binary radial profiles are considered. Examples of synthesized digital images with various extraneous patterns (moiré), which are the result of discretization of images of Fresnel rings, are given.

Key words: Fresnel rings, test pattern, sample discretization, mathematical model