Open AccessRESEARCH ON DEFOCUS APPROXIMATION OF OPTICAL FOURIER TRANSFORM AND DECONVOLUTION
Author(s) -
Yansong Chen,
Song Zheng,
Xuebing Ma
Publication year - 1989
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.38.1723
Subject(s) - deconvolution , deblurring , fourier transform , optics , image (mathematics) , computer science , physics , image restoration , image processing , mathematics , mathematical analysis , computer vision
In this paper, the approximation of optical Fourier transform in the cases of defocus is studied, and the relation of condition required for the defocus approximation of Fourier transform is derived. From this principle a method of using the defocus approximation is described for deblurring an electronic micrographic image, which makes the optical deconvolution process significantly simplified. The experimental results show that the quality of the image of an amorphous carbonic film is notably improved.