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Color Saturation Improvement using the Maximum Color Difference Table

최대색차신호 표를 이용한 컬러 채도 향상

  • 김선정 (전남대학교 전자컴퓨터공학과) ;
  • 홍성훈 (전남대학교 전자컴퓨터공학부(정보통신연구소))
  • Received : 2012.07.24
  • Accepted : 2012.12.18
  • Published : 2013.02.28

Abstract

In this paper, we propose a new color image enhancement method to improve the color saturation as well as luminance contrast in the YCbCr color space. The proposed method uses the maximum color difference table to compensate the perceived saturation changes due to luminance contrast changes. To improve the color saturation, the method first calculates the weighting factor by using the maximum color difference table and then multiplies the weighting factor to the input color difference signals. In this step, it maps color difference signals to proper color region to prevent the color distortion by considering the correlation of color saturations depending on the luminance and hue. The experimental results show that our method effectively improves color saturation compared to the conventional methods.

Acknowledgement

Supported by : 한국연구재단

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