Presentation 1995/12/15
A Random-Dot Model with Triply Poisson Process for Screen-Film System
Isao Yamada, Kazuo Tanaka, Hiroshi Inatsu, Hirofumi Kawano,
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Abstract(in English) Radiographic images obtained by the screen-film system have various noise called quantum mottle, structure mottle, and film granularity. It is well known that these noise affect the signal detectability. It is useful to analyze the statistical properties of radiographic noise in constructing of high performance x-ray imaging system. Authors present a random-dot model with triply Poisson process that can explain statistical properties of radiographic noise. Rigorous expressions of the mean transmittance and autocorrelation function of transmittance are obtained. Numerical examples show this model can explain the characteristics of experimental results in a practical screen-film system.
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Keyword(in English) Poisson process / random-dot model / radiographic mottle / Wiener Spectrum
Paper # CS95-158,IE95-110
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Committee CS
Conference Date 1995/12/15(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Random-Dot Model with Triply Poisson Process for Screen-Film System
Sub Title (in English)
Keyword(1) Poisson process
Keyword(2) random-dot model
Keyword(3) radiographic mottle
Keyword(4) Wiener Spectrum
1st Author's Name Isao Yamada
1st Author's Affiliation Corse of radiology, Gifu College of Medical Technology()
2nd Author's Name Kazuo Tanaka
2nd Author's Affiliation Department of Electronics & Computer Engineering, Gifu University
3rd Author's Name Hiroshi Inatsu
3rd Author's Affiliation Department of Radiology, Miyazaki Medical College Hospital
4th Author's Name Hirofumi Kawano
4th Author's Affiliation Department of Radiology, Miyazaki Medical College Hospital
Date 1995/12/15
Paper # CS95-158,IE95-110
Volume (vol) vol.95
Number (no) 436
Page pp.pp.-
#Pages 6
Date of Issue