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Pixel-wise orthogonal decomposition for color illumination invariant and shadow-free image
Qu LQ(屈靓琼); Tian JD(田建东); Han Z(韩志); Tang YD(唐延东)
Department机器人学研究室
Source PublicationOPTICS EXPRESS
ISSN1094-4087
2015
Volume23Issue:3Pages:2220-2239
Indexed BySCI ; EI
EI Accession number20150800538052
WOS IDWOS:000349688800050
Contribution Rank1
AbstractIn this paper, we propose a novel, effective and fast method to obtain a color illumination invariant and shadow-free image from a single outdoor image. Different from state-of-the-art methods for shadow-free image that either need shadow detection or statistical learning, we set up a linear equation set for each pixel value vector based on physically-based shadow invariants, deduce a pixel-wise orthogonal decomposition for its solutions, and then get an illumination invariant vector for each pixel value vector on an image. The illumination invariant vector is the unique particular solution of the linear equation set, which is orthogonal to its free solutions. With this illumination invariant vector and Lab color space, we propose an algorithm to generate a shadow-free image which well preserves the texture and color information of the original image. A series of experiments on a diverse set of outdoor images and the comparisons with the state-of-the-art methods validate our method. © 2015 Optical Society of America.
Language英语
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectOptics
WOS KeywordSINGLE IMAGE ; INTRINSIC IMAGES ; REMOVAL ; COMPONENTS
WOS Research AreaOptics
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/15755
Collection机器人学研究室
Corresponding AuthorTang YD(唐延东)
Affiliation1.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation
GB/T 7714
Qu LQ,Tian JD,Han Z,et al. Pixel-wise orthogonal decomposition for color illumination invariant and shadow-free image[J]. OPTICS EXPRESS,2015,23(3):2220-2239.
APA Qu LQ,Tian JD,Han Z,&Tang YD.(2015).Pixel-wise orthogonal decomposition for color illumination invariant and shadow-free image.OPTICS EXPRESS,23(3),2220-2239.
MLA Qu LQ,et al."Pixel-wise orthogonal decomposition for color illumination invariant and shadow-free image".OPTICS EXPRESS 23.3(2015):2220-2239.
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