Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

Color image enhancement method based on multi-scaled retinex considering chromatic distribution of input image

이미지의 색도 분포를 고려한 다중 Retinex 기반의 칼라 향상 기법

  • Jang, In-Su (School of Electrical Engineering and Computer Science Kyungpook National University) ;
  • Park, Kee-Hyon (School of Electrical Engineering and Computer Science Kyungpook National University) ;
  • Ha, Yeong-Ho (School of Electrical Engineering and Computer Science Kyungpook National University)
  • 장인수 (경북대학교 전자전기컴퓨터학부) ;
  • 박기현 (경북대학교 전자전기컴퓨터학부) ;
  • 하영호 (경북대학교 전자전기컴퓨터학부)
  • Published : 2008.06.18
Download PDF
⟨ Previous Next ⟩

Abstract

Multi-scaled retinex algorithm is generally used to enhance the local contrast and remove the illuminant component. However, if the chromatic distribution of an original image is not uniform and dominated by a certain chromaticity, the chromaticity of resulting image depends on the dominant chromaticity of the original image, thereby inducing the color distortion. In this paper, a modified multi-scaled retinex method to reduce the influence of the dominant chromaticity in the image is proposed using a average chromaticity of original image and global illuminant chromaticity. In addition, to compensate saturation, the chroma value of the resulting image is enhanced based on that of the original image in the CIELAB space.

Keywords