title: Simultaneous Cartesian coordinate display of defocused optical transfer functions.
abstract: We show that by using a binary spatial filter and a square-law detector we can display all the defocused optical transfer functions (OTF's) in a given study in a single picture. The resulting unique picture has as its horizontal coordinates the spatial frequency and as its vertical coordinates the amount of defocus. The gray-level variations are proportional to the modulus of the OTF, that is, the modulation transfer function. Numerical simulations are included.
authors: School of Science, University of Las Americas, Cholula 72820, Puebla, Mexico.
authors: J
authors: J
authors: Ojeda-Castañeda
authors: A
authors: A
authors: Castro