Image Processing System for Color Analysis of Food

식품의 색채 분석을 위한 영상 처리 시스템

  • Kim, Kyung-Man (Department of Food Science and Technology, Seoul National University) ;
  • Seo, Dong-Wook (Department of Food Science and Technology, Seoul National University) ;
  • Chun, Jae-Kun (Department of Food Science and Technology, Seoul National University)
  • 김경만 (서울대학교 농업생명과학대학 식품공학과) ;
  • 서동욱 (서울대학교 농업생명과학대학 식품공학과) ;
  • 전재근 (서울대학교 농업생명과학대학 식품공학과)
  • Published : 1996.08.30

Abstract

An image processing system was built to evaluate the color properties of apple and meat. The system consisted of video camera, video card, 32 bit microcomputer and an optical illuminator. The operating software was developed to carry out capturing, analyzing, displaying and storing of the 8 bit digitized images of food. The images of apples at various maturing stages were investigated to obtain the color histogram of R, G, B and Hunter value. RGB histogram showed a major difference in G value, 35.01, the minor change in R value, 6.16, and the negligible difference in B value. The image of beef cut was separated into two parts, fat and lean tissue, by applying threshold value method based on the digital value of color. The threshold value for fat was over 240 and for lean under 230 in R value, respectively. The resulting non fat image showed 2% decreased color difference value, ${\Delta}E$, than whole meat cut.

Keywords

image processing system;food image;measurement of color;apple;beef;video image