Number of the records: 1
High-Quality Vector Field and Direct Jacobian Estimation
- 1.
SYSNO ASEP 0352083 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title High-Quality Vector Field and Direct Jacobian Estimation Author(s) Gronát, Petr (UT-L) RID Number of authors 1 Source Title 24th Symposium on Anemometry, Proceedings. - Praha : Institute of Hydrodynamics ASCR, v. v. i., 2010 / Chára Z. ; Klaboch L. - ISBN 978-80-87117-07-1 Pages s. 27-29 Number of pages 2 s. Publication form CD - CD Action Symposium on Anemometry /24./ Event date 01.06.2010-02.06.2010 VEvent location Holany – Litice Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords PIV ; normalized cross correlation ; affine transformation Subject RIV BK - Fluid Dynamics R&D Projects GA101/08/1112 GA ČR - Czech Science Foundation (CSF) GAP101/10/1230 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 allows an affine transformation of a correlation window. It is shown that Lagrangian field of displacements, considering the linear terms only, satisfies the requirements for affine transformation and using the Normalized-Cross-Correlation (NCC) together with affine transformation and Newton-Raphson iterative method, six parameters defining this transformation can be estimated. Using these parameters, both displacement and vorticity can be computed directly without differentiation of the vector field. 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