CASIA OpenIR  > 09年以前成果
Illumination Independent Descriptors using Color Moment Invariants
Li B(李兵)
2009
发表期刊Optical Engineering,
卷号48期号:2页码:2
摘要
Color-based object indexing and matching is attractive because color is an efficient visual cue for characterizing an object. However, different light sources will lead to color deformation of objects, which will inevitably degrade the performance of recognition. In order to circumvent this confounding influence, we present three effective illumination-independent descriptors that are substantially insensitive to the variations of light conditions, object geometric transformation, and image blur level. To this end, we define two new two-dimensional color coordinate systems, the central color coordinate system and the edgebased color coordinate system, based on the diagonal-offset reflectance model. By introducing normalized moment invariants, this paper then provides two color-constant descriptors in each system separately. Either descriptor is a feature vector consisting of several normalized moment invariants of the color pixels’ distribution with different orders. Furthermore, the combination thereof can characterize not only color content but also color edges in an image, so it serves as a third descriptor of the image. Experiments on real image databases with object recognition and image retrieval show that our descriptors are robust and perform very well under various circumstances.
关键词Illumination Independent Color
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/20377
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 Independent Descriptors using Color Moment Invariants[J]. Optical Engineering,,2009,48(2):2.
APA Li B.(2009).Illumination Independent Descriptors using Color Moment Invariants.Optical Engineering,,48(2),2.
MLA Li B."Illumination Independent Descriptors using Color Moment Invariants".Optical Engineering, 48.2(2009):2.
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