CASIA OpenIR  > 模式识别国家重点实验室  > 多媒体计算与图形学
Subgrid scale formulation of optical flow for the study of turbulent flow
Cassisa, C.1; Simoens, S.2; Prinet, V.3; Shao, L.2
Source PublicationEXPERIMENTS IN FLUIDS
2011-12-01
Volume51Issue:6Pages:1739-1754
SubtypeArticle
AbstractWe propose a new formulation of optical flow in the case of passive scalar or solid particles spreading in turbulent flows. The flow equation is defined from the scalar transport equation and a decomposition of our physical quantities (velocity and concentration fields) into two contributions, large and small scales, to account for the lack of spatial resolution in processed images. A subgrid scale model is introduced to model the small scale contribution. Comparisons are made with existing optical flow methods and Particle Image Velocimetry on synthetic and real sequences. The improvement of the estimation of velocity field by the proposed formulation is discussed in the case of a scalar turbulent propagation.
WOS HeadingsScience & Technology ; Technology
WOS KeywordIMAGING VELOCIMETRY MEASUREMENTS ; GRADIENT TENSOR FIELD ; ROBUST ESTIMATION ; BOUNDARY-LAYER ; VARIABLE WIDTH ; STREET CANYON ; LINE SOURCE ; COMPUTATION ; SIMULATION ; DISPERSION
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
WOS IDWOS:000297167400019
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9973
Collection模式识别国家重点实验室_多媒体计算与图形学
Affiliation1.Tsinghua Univ, Lab Turbulence, Beijing 100084, Peoples R China
2.Ecole Cent Lyon, CNRS, Lab Fluid Mech & Acoust, UMR 5509, Ecully, France
3.Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Cassisa, C.,Simoens, S.,Prinet, V.,et al. Subgrid scale formulation of optical flow for the study of turbulent flow[J]. EXPERIMENTS IN FLUIDS,2011,51(6):1739-1754.
APA Cassisa, C.,Simoens, S.,Prinet, V.,&Shao, L..(2011).Subgrid scale formulation of optical flow for the study of turbulent flow.EXPERIMENTS IN FLUIDS,51(6),1739-1754.
MLA Cassisa, C.,et al."Subgrid scale formulation of optical flow for the study of turbulent flow".EXPERIMENTS IN FLUIDS 51.6(2011):1739-1754.
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