Number of the records: 1
Affine Correlation Method for Direct Vorticity, Skew and Displacement Estimation
- 1.
SYSNO ASEP 0351501 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Affine Correlation Method for Direct Vorticity, Skew and Displacement Estimation Author(s) Gronát, Petr (UT-L) RID Source Title Topical Problems of Fluid Mechanics 2010. - Praha : Ústav termomechaniky, AV ČR, v. v. i., 2010 / Příhoda J. ; Kozel K. - ISBN 978-80-87012-25-3 Pages s. 59-62 Number of pages 4 s. Action Topical Problems of Fluid Mechanics 2010 Event date 10.02.2010-11.02.2010 VEvent location Praha Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords normalized cross correlation ; affine correlation Subject RIV BK - Fluid Dynamics R&D Projects GA101/08/1112 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation In this paper, a correlation method for direct vorticity computation of the fluid velocity field is introduced. The correlation method considering the affine transformation of a correlation window is presented. It is shown, that Lagrangian field of displacements, con- sidering the linear terms only, satis- fyes the requirements for affine transfor- mation. Using the Normalized–Cross– Correlation together with affine trans- formation and Newton-Raphson itera- tive method, six parameters defining the transformation can be estimated. Subse- quently, both displacement and vorticity can be computed using the above men- tioned parameters, hence, the vorticty is being obtained for every single point di- rectly during the correlation procedure. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
Number of the records: 1