대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2008년도 하계종합학술대회
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- Pages.845-846
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- 2008
이미지의 색도 분포를 고려한 다중 Retinex 기반의 칼라 향상 기법
Color image enhancement method based on multi-scaled retinex considering chromatic distribution of input image
- 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)
- 발행 : 2008.06.18
초록
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.
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