Browse > Article
http://dx.doi.org/10.7742/jksr.2018.12.4.519

Application of Wiener filter to Chest CR images  

Choi, Seokyoon (Department of Radiological Science, Catholic University of Pusan)
Publication Information
Journal of the Korean Society of Radiology / v.12, no.4, 2018 , pp. 519-524 More about this Journal
Abstract
Chest examinations and mass chest examinations using the CR(computed radiography) System are frequently used clinically. a factor that degrades image quality in the acquisition process is the use of unused IPs long times. this paper addresses the estimation of winer filter and improved wiener filter to restoration of Chest CR images Experimental results show that the proposed method can reduce noise. in low noise variation image wiener method was excellent than improved method and the result was the opposite at high noise varience. the application of algorithms to chest CR images effectively eliminates noise. the classic Wiener filter was better than the improved method. Multiple patients examined during the process without any erase IP(image plate) process, The proposed algorithm determines that the images can be restored to a good quality and will help to read the images.
Keywords
CR; IP; noise; PSNR;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 W. J. Yu, S. H. Kang, Y. G. Lee, Y. Lee, "Study on Analysis of Noise Characteristics and Improvement Effectiveness using combination of two filters with Various Exposure Parameters based on Digital X-ray Imaging System", JIEIE, Vol. 55, No. 1, pp. 127-131, 2018.
2 B. Y. Lim, H. S. Park, J. H. Kim, H. J. Kim, "Evaluation of Unexposed Images after Erasure of Image Plate from CR System," Korean journal of medical physics, Vol. 20, No. 4, pp. 199-207, 2009.
3 C. H. Shin, C. Y. Jung, "A Restoration of Degraded Medicine Images Based on Optimized Parametric Wiener Filter, JKIICE", Vol. 16, No. 5, pp. 1056-1063, 2012.
4 S. Choi, I. C. Im, "Noise Changes in Image Plate," Journal of the Korean Society of Radiology, Vol. 12, No. 2, pp. 271-275, 2018.
5 Jae S. Two-Dimensional Signal and Image Processing, Prentice Hall, pp. 538, 1990.
6 R. C. Gonzalez, R. E. Woods, Digital Image Processing, 3rd Ed, Addison-Wesley Publishing, Company, Inc., pp. 353, 2008.