. . "Holany \u2013 Litice" . "1"^^ . "Gron\u00E1t, Petr" . . "[FE29C1365AC4]" . "RIV/61388998:_____/10:00352083!RIV11-GA0-61388998" . . "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."@en . "P(GA101/08/1112), P(GAP101/10/1230), Z(AV0Z20760514)" . "978-80-87117-07-1" . "1"^^ . "24th Symposium on Anemometry" . . "2010-06-01+02:00"^^ . "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." . . . . "Praha" . . "High-Quality Vector Field and Direct Jacobian Estimation"@en . . "261594" . . . "2"^^ . "PIV; normalized cross correlation; affine transformation"@en . . . . . . . "RIV/61388998:_____/10:00352083" . "High-Quality Vector Field and Direct Jacobian Estimation"@en . "High-Quality Vector Field and Direct Jacobian Estimation" . . "High-Quality Vector Field and Direct Jacobian Estimation" . "Institute of Hydrodynamics ASCR, v. v. i." .