Color gamut mapping using fictive 3-D CIELAB equidistance sample

가상의 3차원 CIELAB 등거리 색표본을 이용한 색역사상

  • 곽한봉 (부경대학교 화상정보공학부) ;
  • 오현수 (부경대학교 화상정보공학부) ;
  • 이철희 (경운대학교 컴퓨터공학과) ;
  • 서봉우 (부경대학교 화상정보공학부) ;
  • 안석출 (부경대학교 화상정보공학부)
  • Published : 2000.12.01

Abstract

Gamut mapping is a technique that acts on cross-media reproduction to transform a color between devices for the purpose of enhancing the appearance or preserving the appearance of an image. Gamut mapping essentially produces color conversion error which depends the gamut mapping method, source and destination devices, and sample points for gamut modeling. For color space conversion between monitor colors and printer colors, empirical representation using sample measurements is currently widely utilized. Color samples are uniformly selected in the device space such as CMY or RGB, represented as color patches, and then measured. However, in the case of printer, these color samples are not evenly distributed inside the printer gamut and the color conversion error is increased. Accordingly, this paper introduces a equally distributed color sampling method in CIELAB space, a device-independent color space, to reduce color conversion error, and the performance is analyzed via color space conversion experiments using tetrahedral interpolation.

Keywords