Digital Still Camera Profiling for the Optimization Of Printing Process

인쇄 공정의 최적화를 위한 디지털카메라의 Profiling

  • Cha, Jae-Young (Department of Printing and Information Media, Korea Polytechnic College) ;
  • Cho, Ga-Ram (Division of Image & Information, College of Engineering, Pukyong National University) ;
  • Koo, Chul-Whoi (Division of Image & Information, College of Engineering, Pukyong National University)
  • 차재영 (한국폴리텍대학 인쇄정보미디어과) ;
  • 조가람 (부경대학교 공과대학 화상정보공학부) ;
  • 구철회 (부경대학교 공과대학 화상정보공학부)
  • Published : 2008.12.01

Abstract

The color reproduction of digital still camera does not, in general, match those of the final prints. Because color gamut of these devices is different, it is therefore necessary to take account of a way to match. The way uses the optimized profile to print an image. This paper proposed a way to create the input profile of digital still camera for standardization printing process. The results of proposed way showed that for input profiles equivalent, good results relatively. In this paper, an experiment was done where the illumination sources used as the standard illumination 5200K and illuminated at a $45^{\circ}$ angle in the best illumination efficiently. The white balance was in mode 'custom': aperture F11, exposure time 1/60s, ISO50, focal length 80mm. The images were exported and saved as 16bit RGB tiff(AdobeRGB, sRGB, ProphotoRGB) images. To do the test, the RGB values of the RGB tiff images are processed through the ICC input profile to arrive at processed $CIEL^*a^*b^*$ values. A profiling tool such as ProfileMaker 5.0 and Monacoprofile 4.8 are used to do this. The processed CIEL*a*b* values are compared to the reference CIEL*a*b* values and these two values are used to calculate a ${\Delta}E$.

Keywords