Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)
- Volume 10 Issue 3
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- Pages.293-302
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- 1989
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- 1229-0807(pISSN)
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- 2288-9396(eISSN)
Image Restoration in Digital Radiography Using Dual Sensor Wiener Filer
이중센서 위너필터를 이용한 디지탈 라디오 그라피 영상 복원
- Lee, Tae-Soo (College of Medicine, Seoul National University) ;
-
Park, Kwang-Suk
(College of Medicine, Seoul National University)
;
- Min, Byoumg-Goo (College of Medicine, Seoul National University) ;
- Lim, Jeong-Gee (College of Medicine, Seoul National University) ;
- Han, Man-Chung (College of Medicine, Seoul National University)
- Published : 1989.12.01
Abstract
A Dual Sensor Wiener Filter technique was used to improve the image quality of the scanning type digital radiographic system (resolution and SNR). In this method, two images were acquried simultaneously using two sensors with high and low resolution and SNR values. Using the cross Power spectrum between dual sensor outputs of the same chest radiographic image. we design a new type of Wiener Filter and implement it with fast algorithm. We compared the performance of this new dual sensor filter with conventional single sensor filters (Wiener Filter and Parametric Projec- tion Filter) . In simulation studies, it is shown that this new method has SNR improvement of 1-3 dB better than conventional filters.
Keywords