Discrete Fourier Transform Based Depth-from-Focus

1 January 1989

proceedings article
Published by Optica Publishing Group

p. WB3
https://doi.org/10.1364/iumv.1989.wb3

Abstract

A method is demonstrated for estimating range by using two-dimensional DFT’s to measure focus differences between images taken with two different lens apertures.

Keywords

DISCRETE FOURIER TRANSFORMS
FAR FIELD DIFFRACTION
FOURIER TRANSFORMS
POINT SPREAD FUNCTION
POWER SPECTRA
WHITE LIGHT

This publication has 1 reference indexed in Scilit:

Properties of a Defocused Optical System*
Journal of the Optical Society of America, 1969