A Psychophysical Approach to evaluating the perceived image quality of CRT: White Uniformity Quality

CRT 모니터의 감성품질 정량화를 위한 심물리학적 접근: White Uniformity 품질 평가

  • 이욱기 (금오공과대학교 산업경영학과) ;
  • 김성환 (LG전자 생산기술원 지식기반그룹) ;
  • 이선규 (금오공과대학교 산업경영학과) ;
  • 이광희 (금오공과대학교 산업경영학과) ;
  • 김상수 (LG전자 DID사업부 생산기술그룹)
  • Received : 2001.04.03
  • Accepted : 2001.07.13
  • Published : 2001.08.31

Abstract

White uniformity is one of the important inspection factors determining the image quality of CRT screen. In the full white pattern, white uniformity means the degree of uniform distribution of white color across the whole screen. To elicit the sensitivity factors affecting the decision of the white uniformity quality, experiments in which participants were confronted with 6 evaluation points embedded in 3 measurement groups on a CRT screen were conducted to gather the psychophysical data that are the level of white uniformity subjects perceived and CA100 produced. These data were used to develop a modified CIE1976 equation for calculating white uniformity. Performance comparison between the original CIE1976 equation and the modified equation was conducted in terms of accuracy test and magnitude estimation. It was concluded the modified equation is more sensitive in the change of white uniformity, compared to the original CIE1976 equation.

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