Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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Skewness based Adaptive Retinex Algorithm for Wide Dynamic Range

영상의 동적영역 확대를 위한 비대칭도 기반 적응적 Retinex 알고리즘

  • Oh, Jonggeun (School of Electronics Engineering, Soongsil University) ;
  • Kim, Beomsu (School of Electronics Engineering, Soongsil University) ;
  • Hong, Min-Cheol (School of Electronics Engineering, Soongsil University)
  • Received : 2013.11.12
  • Accepted : 2013.11.27
  • Published : 2013.12.30
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Abstract

This paper presents an adaptive Retinex algorithm for improving dynamic range of image representation. The proposed Retinex algorithm detects degraded brightness by using skewness and the degraded components are compensated with local statistics. In particular, we propose a new compensation function for dynamic range so that effectinve image representation can be achieved. Experimental results show that the proposed algorithm has the capability to improve the dynamic range with reduction of color degradation.

본 논문은 영상 표현의 동적영역 증대를 위한 적응적 Retinex 알고리즘에 대하여 제안한다. 제안 방식은 Retinex 알고리즘을 기반으로 비대칭도를 이용하여 입력 영상에 대한 밝기 정보의 왜곡을 검출하고 왜곡 성분을 국부 통계 특성을 기반으로 적응적으로 처리하였다. 특히 휘도성분에 대하여 새로운 보정함수를 적용시킴으로써 동적영역 확대를 통해 해상도를 개선하였다. 실험을 통해 휘도 성분에 대한 동적 영역 확대 및 색 왜곡 효과를 감소시키는 효과를 확인할 수 있었다.

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References

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