Improvement of Color Reproduction Using Gamma and CCT Correction on Small LCD Display for Mobile Phone

휴대폰용 소형 LCD 디스플레이에서 감마 및 상관 색온도 보정을 이용한 색재현 성능 향상

  • 한찬호 (HIT 연구소) ;
  • 송규익 (경북대학교 전기전자컴퓨터공학부) ;
  • 권성근 (삼성전자 정보통신총괄 무선사업부)
  • Published : 2006.04.01

Abstract

Color reproduction of small LCD display is quite different from that of standard CRT due to the difference of physical, electrical, and optical characteristics. In this paper, we propose a simple and practical method using gamma and CCT correction for improvement of color reproduction on a small LCD display. First, we investigate characteristics of a small LCD display such as brightness, uniformity, color temperature, white and black balance, and nonlinear gamma. And, we also analyze color reproduction region and CCT trajectory according to LCD's input levels. Finally, the optimum gamma and CCT compensation method using LUT is proposed, and our proposed method was realized at mobile phone without hardware modification. In the experimental results, the result image of proposed algorithm is more close to standard color.