低域フィルタによるRI画像の計算機処理(第1報) : 低域ディジタルフィルタの作成

概要

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On condition that MTF of filter had circular symmetry, seven low-pass digital filters, which covered a wide range of cutoff frequencies from 3.2/64 to 23.6/64 cycles/sample, were synthesized by using Fourier-Bessel transform. These filters were applied to 64×64 matrix image from a scintillation camera and then Fourier spectra of the processed images were computed. As a result of the spectral analysis the fact was verified that for allthe synthesized filter characteristics the spectrum components were zero over the stopbands and underwent almost no change over the passbands.
公益社団法人日本放射線技術学会の論文
1981-07-01