Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Noise Removal Algorithm based on Fuzzy Membership Function in AWGN Environments

AWGN 환경에서 퍼지 멤버십 함수에 기반한 잡음 제거 알고리즘

  • Cheon, Bong-Won (Dept. of Smart Robot Convergence and Application Eng., Pukyong National University) ;
  • Kim, Nam-Ho (Dept. of Control and Instrumentation Eng., Pukyong National University)
  • Received : 2020.09.11
  • Accepted : 2020.11.06
  • Published : 2020.12.31
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Abstract

With the development of IoT technology, various digital equipment is being spread, and accordingly, the importance of data processing is increasing. The importance of data processing is increasing as it greatly affects the reliability of equipment, and various studies are being conducted. In this paper, we propose an algorithm to remove AWGN according to the characteristics of the fuzzy membership function. The proposed algorithm calculates the estimated value according to the correlation between the value of the fuzzy membership function between the input image and the pixel value inside the filtering mask, and obtains the final output by adding or subtracting the output of the spatial weight filter. In order to evaluate the proposed algorithm, it was simulated with existing AWGN removal algorithms, and analyzed using difference image and PSNR comparison. The proposed algorithm minimizes the effect of noise, preserves the important characteristics of the image, and shows the performance of efficiently removing noise.

IoT 기술의 발달에 따라 다양한 디지털 장비가 보급되고 있으며, 이에 따라 데이터 처리의 중요성이 높아지고 있다. 데이터 처리는 장비의 신뢰성에 큰 영향을 미치는 만큼 그 중요성이 증가하고 있으며, 다양한 연구가 진행되고 있다. 본 논문에서는 퍼지 멤버쉽 함수의 특성에 따른 AWGN을 제거하는 알고리즘을 제안한다. 제안한 알고리즘은 입력 영상 및 필터링 마스크 내부의 화소값 사이의 퍼지 멤버쉽 함수값의 상관관계에 따라 추정치를 계산하며, 공간 가중치 필터의 출력과 가감하여 최종 출력을 구한다. 제안한 알고리즘을 평가하기 위해 기존 AWGN 제거 알고리즘들과 시뮬레이션하였으며, 차영상 및 PSNR 비교를 사용하여 분석하였다. 제안한 알고리즘은 잡음의 영향을 최소화하였으며, 영상의 중요 특성을 보존하며 효율적으로 잡음을 제거하는 성능을 보였다.

Keywords

Acknowledgement

This work was supported by the Technology development Program(S2922914) funded by the Ministry of SMEs and Startups(MSS, Korea)

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