한국멀티미디어학회논문지 (Journal of Korea Multimedia Society)

  • 제20권9호
  • /
  • Pages.1481-1490
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  • 2017
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  • 1229-7771(pISSN)
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  • 2384-0102(eISSN)
한국멀티미디어학회 (Korea Multimedia Society)
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HSV 컬러 공간에서의 레티넥스와 채도 보정을 이용한 화질 개선 기법

Image Quality Enhancement Method using Retinex in HSV Color Space and Saturation Correction

  • Kang, Han-Sol (Dept. of Mechatronics Engineering, Chungnam National University) ;
  • Ko, Yun-Ho (Dept. of Mechatronics Engineering, Chungnam National University)
  • 투고 : 2017.05.19
  • 심사 : 2017.07.19
  • 발행 : 2017.09.30
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초록

This paper presents an image quality enhancement algorithm for dark image acquired under poor lighting condition. Various retinex algorithms which are human perception-based image processing methods were proposed to solve this problem. Although MSR(Multi-Scale Retinex) among these algorithm works well under most lighting condition, it shows color degradation because their separate nonlinear processing of RGB color channels. To compensate for the loss of the color, MSRCR(Multi-Scale Retinex with Color Restoration) was proposed. However, it requires high computational load and has additional parameters that need to be adjusted according to input image. In order to overcome this problem, a new retinex algorithm based on MSR is proposed in this paper. The proposed method consists of V channel MSR, saturation correction, and separate contrast enhancement process. Experimental results show that the subjective and objective image quality of the proposed method better than those of the conventional methods.

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참고문헌

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