디지털 의료영상에서 Noise감소를 위한 필터조합과 임상적 효과에 관한 연구
Research About Filter Association and Clinical Effect Noise Reduction of Digital Medical Imaging System
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초록
의료영상에서 화질저하를 최소화 하면서 Noise를 감소시키기 위하여 Noise가 첨가되어 있는 영상을 대상으로 Low Pass Filter(LPF) 5종, High Pass Filter(HPF) 4종, Median Filter(MF) 11종의 모두 20개의 필터를 복합적으로 사용하여 Noise 제거효과를 검토하였다. Noise를 나타내는 지표로 Peak Signal to Noise Ratio(PSNR), Mean Square Error(MSE)를 비교하였다.그 결과 Noise 감소효과가 가장 높은 필터의 조합은 LPF3*3#1+HPF3*3#1+Vertical3*1로 나타났다. 이 필터의 조합을 흉부, 골반, 머리 등의 의료영상에 적용하여 임상적인 Noise 제거효과를 확인하였다.
Abstract
This paper is for investigation of the noise reduction effect all 20 filters by combining Low Pass Filter (LPF) 5 kinds, High Pass Filter(HPF) 4 kinds, Median Filter(MF) 11 kinds. Noise is added to reduce noise and minimize the quality degradation in medical imaging system. We also compared Peak Signal to Noise Ratio(PSNR), Mean Square Error(MSE) for all the combinations of different filters. As a result, noise decrease appeared in the LPF3*3#1+HPF3*3#1+Vertical3*1 of highest filter. We confirmed noise reduction effect by applying the proposed filter combination in many fields of medical imaging applications.
참고문헌 (7)
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