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Trace projection transformation: a new method for measurement of debris flow surface velocity fields
Yan, Yan1,2; Cui, Peng1,3; Guo, Xiaojun1,2; Ge, Yonggang1
Corresponding AuthorCui P
2016
Source PublicationFRONTIERS OF EARTH SCIENCE
ISSN2095-0195
EISSN2095-0209
Volume10Issue:4Pages:761-771
SubtypeArticle
AbstractSpatiotemporal variation of velocity is important for debris flow dynamics. This paper presents a new method, the trace projection transformation, for accurate, non-contact measurement of a debris-flow surface velocity field based on a combination of dense optical flow and perspective projection transformation. The algorithm for interpreting and processing is implemented in C ++ and realized in Visual Studio 2012. The method allows quantitative analysis of flow motion through videos from various angles (camera positioned at the opposite direction of fluid motion). It yields the spatiotemporal distribution of surface velocity field at pixel level and thus provides a quantitative description of the surface processes. The trace projection transformation is superior to conventional measurement methods in that it obtains the full surface velocity field by computing the optical flow of all pixels. The result achieves a 90% accuracy of when comparing with the observed values. As a case study, the method is applied to the quantitative analysis of surface velocity field of a specific debris flow.
KeywordDebris Flow Surface Velocity Field Spatiotemporal Variation Dense Optical Flow Perspective Projection Transformation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11707-015-0576-6
WOS Subject ExtendedGeology
Indexed BySCI
WOS KeywordOPTICAL COHERENCE TOMOGRAPHY ; JIANGJIA RAVINE ; DOPPLER ; CHINA ; LSPIV ; PIV ; VELOCIMETRY ; ALPS
Language英语
Quartile4区
TOP
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000387866300014
Funding OrganizationKey Technologies R&D Program of Sichuan Province(2014SZ0163 ; External Cooperation Program of BIC, CAS(131551KYSB20130003) ; Open Research Fund by Sichuan Engineering Research Center for Emergency Mapping & Disaster Reduction(K2015B011) ; 2015SZ0046)
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17638
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Hazards, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Yan, Yan,Cui, Peng,Guo, Xiaojun,et al. Trace projection transformation: a new method for measurement of debris flow surface velocity fields[J]. FRONTIERS OF EARTH SCIENCE,2016,10(4):761-771.
APA Yan, Yan,Cui, Peng,Guo, Xiaojun,&Ge, Yonggang.(2016).Trace projection transformation: a new method for measurement of debris flow surface velocity fields.FRONTIERS OF EARTH SCIENCE,10(4),761-771.
MLA Yan, Yan,et al."Trace projection transformation: a new method for measurement of debris flow surface velocity fields".FRONTIERS OF EARTH SCIENCE 10.4(2016):761-771.
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