Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Compensation of Color Eerror Caused by Dynamic Range Transformation of Images

생동도 변환으로 인한 화상의 색오차 보정

  • 장종국 (영동공과대학교 전자공학부) ;
  • 권기룡 (부산외국어대학교 전자공학과) ;
  • 안상호 (인제대학교 전자공학과) ;
  • 송규익 (경북대학교 전자전기공학부) ;
  • 이건일 (경북대학교 전자전기공학부)
  • Published : 1996.04.01
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Abstract

A compensation method of color error resulting from dynamic range transformation of color image is propsoed. The color error is measured using the CIE L a b uniform color space, and the color image is compensated to minimize it. The color error is significant in the dark region of image, which is caused by the lunimance scaling factor is relatively large in that case. In the proposed method, we weight the luminance scaling factor corresponding to luminnce to minimize the error. Because the weighting factor depends on luminace distribution of image, a decisio method of weighting factor using histogram is also proposed.

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