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High quality depth map estimation of object surface from light-field images
Liu, Fei1,2; Hou, Guangqi2; Sun, Zhenan2; Tan, Tieniu2; Guangqi Hou
Source PublicationNEUROCOMPUTING
; Light-field imaging provides a novel solution to the passive 3D imaging technology. However the dense multi-view sub-aperture images decoded from the light-field raw image have extremely narrow baselines, which lead to inconsistent matching with terrible blurriness and ambiguities. This paper presents an accurate depth estimation algorithm for object surface using a lenslet light-field camera. The input data for depth estimation can be both light-field videos and images under indoor and outdoor environment. To tackle the continuously changing outdoor illumination and take full advantage of rays, rendering enhancement is performed through denoising and local vignetting correction for obtaining high-fidelity 4D light fields. The novel sub-aperture image pair selection and stereo matching algorithm are proposed for disparity computation. Then we apply the disparity refinement for recovering high quality surface details and handling disparity discontinuities. Finally both commercial and self-developed light-field cameras are used to capture real-world scenes with various lighting conditions and poses. The accuracy and robustness of the proposed algorithm are evaluated both on synthetic light-field datasets and real-world scenes by comparing with state-of-the-art algorithms. The experimental results show that high quality depth maps are recovered with smooth surfaces and accurate geometry structures. (C) 2017 Elsevier B.V. All rights reserved.
KeywordLight Field Depth Estimation Stereo Matching Disparity Refinement
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Funding OrganizationNational Basic Research Program of China(2012CB316300) ; National Natural Science Foundation of China(61420106015 ; 61302184 ; 61273272)
WOS Research AreaComputer Science
WOS SubjectComputer Science, Artificial Intelligence
WOS IDWOS:000405884500002
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorGuangqi Hou
Affiliation1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China
2.Chinese Acad Sci, CAS Ctr Excellence Brain Sci & Intelligence Techn, Ctr Res Intelligent Percept & Comp, Natl Lab Pattern Recognit,Inst Automat, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Liu, Fei,Hou, Guangqi,Sun, Zhenan,et al. High quality depth map estimation of object surface from light-field images[J]. NEUROCOMPUTING,2017,252(252):3-16.
APA Liu, Fei,Hou, Guangqi,Sun, Zhenan,Tan, Tieniu,&Guangqi Hou.(2017).High quality depth map estimation of object surface from light-field images.NEUROCOMPUTING,252(252),3-16.
MLA Liu, Fei,et al."High quality depth map estimation of object surface from light-field images".NEUROCOMPUTING 252.252(2017):3-16.
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