Proceedings of the Korean Institute of Information and Commucation Sciences Conference (한국정보통신학회:학술대회논문집)
- 2015.10a
- /
- Pages.916-918
- /
- 2015
Modified Adaptive Switching Median Filter using Noise Density in Salt and Pepper Noise Environment
Salt and Pepper 잡음 환경에서 잡음 밀도를 이용한 변형된 적응 스위칭 메디안 필터
- Kwon, Se-Ik (Dept. of Control and Instrumentation Eng. Pukyong National University) ;
-
Kim, Nam-Ho
(Dept. of Control and Instrumentation Eng. Pukyong National University)
- Published : 2015.10.26
Abstract
Image processing is being spotlighted as an important sector with increasingly diverse applications as the society advances into a sophisticated digital information age. Especially, the image restoration as the core technology of image processing, many studies are being progressed. In this paper, in order to restore the damaged image in the Salt and Pepper noisy environment, a modified adaptive switching median filter where the size of local mask can be varied according to the noise density was proposed. And using the PSNR as the standard for objective decision making of the improvement effect, it was compared with the existing methods.
영상처리는 사회가 고도의 디지털 정보화 시대로 발전함에 따라 응용분야가 점차 다양해지고, 중요한 분야로 각광 받고 있다. 특히 영상복원은 영상처리의 핵심기술로 많은 연구가 진행되고 있다. 본 논문에서는 salt and pepper 잡음 환경에서 훼손된 영상을 복원하기 위해, 잡음 밀도에 따라 국부 마스크의 크기를 가변하는 변형된 적응 스위칭 메디안 필터를 제안하였다. 그리고 개선 효과의 객관적 판단 기준으로 PSNR(peak signal to noise ratio)을 사용하여 기존의 방법들과 비교하였다.