Illumination Estimation based on Color Invariant

CASIA OpenIR > 09年以前成果

	Illumination Estimation based on Color Invariant
	Li B(李兵)
发表期刊	Chinese Journal of Electronics
	2009
卷号	18 期号:3 页码:431-434
摘要	Illumination estimation is most important step in color constancy computation. Although a number of elaborate algorithms were proposed, methods like grey world and Max RGB are still widely used because of their low computational costs. The grey world algorithm is based on the grey world assumption: the average reflectance in a scene is achromatic. But this assumption can not be always satisfied well. Borrowing on some of the strengths and simplicity of the grey world algorithm, we propose a novel algorithm called Illumination estimation based on color invariant (IECI) to improve the performance of grey world, in which the achromatic surfaces are identified for illumination estimation. As we know, the color of achromatic surface can completely reflect the illumination color incident on the scene. In light of this idea, color invariant technique is introduced to approximately identify the achromatic surfaces, then iterative method is used to improve accuracy of the proposed method. The experimental results show that the proposed algorithm can get satisfying results and outperforms some current stateof- the-art color constancy algorithms.
关键词	Illumination Estimation
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/20378
专题	09年以前成果
作者单位	Beijing Jiaotong University
推荐引用方式 GB/T 7714	Li B. Illumination Estimation based on Color Invariant[J]. Chinese Journal of Electronics,2009,18(3):431-434.
APA	Li B.(2009).Illumination Estimation based on Color Invariant.Chinese Journal of Electronics,18(3),431-434.
MLA	Li B."Illumination Estimation based on Color Invariant".Chinese Journal of Electronics 18.3(2009):431-434.