Wiener Filtering Using Object and Noise Power Spectra for CsI(Tl)-Scintillator Radiography Detectors

被引：0

作者：

Lee, Eunae ^{[1
]}

Kim, Dong Sik ^{[1
]}

机构：

[1] Hankuk Univ Foreign Studies, Dept Elect Engn, Yongin 17035, South Korea

来源：

2020 INTERNATIONAL CONFERENCE ON ELECTRONICS, INFORMATION, AND COMMUNICATION (ICEIC) | 2020年

基金：

新加坡国家研究基金会;

关键词：

IMAGE QUALITY CHARACTERIZATION;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The performance of the modulation transfer function (MTF) of indirect detectors, which is based on CsI(Tl) scintillator, is commonly worse than that of the direct detector, which is based on a-Se photoconductor, and can be improved using an image restoration technique. In this paper, the MTF performance of indirect detector were improved from an image restoration technique based on the Wiener filter. We used previously calculated noise power spectrum for the Wiener filter with the signal power spectrum calculated from the input image. Depending on the incident exposure of the acquired image, we could achieve an optimal MTF performance in terms of minimum mean square error.

引用

页数：4

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