Journal of Korea Multimedia Society (한국멀티미디어학회논문지)

Korea Multimedia Society (한국멀티미디어학회)
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A Weight Map Based on the Local Brightness Method for Adaptive Unsharp Masking

적응형 언샤프 마스킹을 위한 지역적 밝기 기반의 가중치 맵 생성 기법

  • Hwang, Tae Hun (Graduate School of Electronic & Computer Eng., Seokyeong University) ;
  • Kim, Jin Heon (Graduate School of Electronic & Computer Eng., Seokyeong University)
  • Received : 2018.07.15
  • Accepted : 2018.07.23
  • Published : 2018.08.31
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Abstract

Image Enhancement is used in various applications. Among them, unsharp masking methods can improve the contrast with a simple operation. However, it has problems of noise enhancement and halo effect caused by the use of a single filter. To solve this problems, adaptive processing using multi-scale and bilinear filters is being studied. These methods are effective for improving the halo effect, but it require a lot of calculation time. In this paper, we want to simplify adaptive filtering by generating a weight map based on local brightness. This weight map enables adaptive processing that eliminates the halo effect through a single multiplication operation. Through experiments, we confirmed the suppression of the halo effect through the result image of the proposed algorithm and existing algorithm.

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References

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