SPATIAL FREQUENCY DEPENDENT IMAGE DEGRADATION IN A PARTICULATE MEDIUM

Authors
  1. Tam, W.G.
  2. Zardecki, A.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN);Los Alamos Scientific Lab, Los Alamos NM (US)
Abstract
In an optically dense particulate medium, the effects of scattering on image formation are analysed. When the scattering is sufficiently isotropic so that the diffusion theory applies, a uniform signal attenuation independent of spatial frequency occurs. In an anisotropic medium, multiple scattering produces from a given spatial frequency of the object being imaged a multitude of spatial frequency components. Quantitative results are derived for the frequency shifts and their corresponding contrast ratio reduction.
Date of publication
01 Jan 1985
Number of Pages
18
Reprinted from
Intern'l J of Infrared and Millimeter Waves, vol 6, no 3, 1985, p 249-265
DSTKIM No
86-03031
CANDIS No
97728
Format(s):
Hardcopy;Originator's fiche received by DSIS

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