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Color Image Compensation Method using Advanced Image Formation Model and Adaptive Filter

개선된 영상생성 모델과 적응적 필터를 이용한 칼라 영상 보정방법

  • 최호형 (경북대학교 정보통신학과) ;
  • 윤병주 (경북대학교 전자전기컴퓨터학부)
  • Received : 2009.08.05
  • Accepted : 2009.10.23
  • Published : 2009.12.28

Abstract

Color rendition method is necessary for improving the low contrast images which are achieved by PDA, mobile phone camera or PC camera. There are some methods for color rendition. However, after correcting the color, image quality degradations, such as graying-out, halo-artifact and color noise, may occur. In order to overcome these problems, this paper proposes a retinex-based color rendition method. The proposed method uses the HSV color coordinate system to avoid the graying-out, and the advanced image formation model to reduce the halo-artifact in which the image is divided into three components as the global illumination, the local illumination, and reflectance. The experiment results show that the proposed method yields better performance of color correction over the conveniently method.

Keywords

Halo-artifact;Graying-out;Adaptive Smoothing Method;Advanced Formation Model;Color Noise

Acknowledgement

Supported by : 한국과학재단

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