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• W1980394012 abstract "We present in this paper a variational approach to accurately estimate simultaneously the velocity field and its derivatives directly from PIV image sequences. Our method differs from other techniques that have been presented in the literature in the fact that the energy minimization used to estimate the particles motion depends on a second order Taylor development of the flow. In this way, we are not only able to compute the motion vector field, but we also obtain an accurate estimation of their derivatives. Hence, we avoid the use of numerical schemes to compute the derivatives from the estimated flow that usually yield to numerical amplification of the inherent uncertainty on the estimated flow. The performance of our approach is illustrated with the estimation of the motion vector field and the vorticity on both synthetic and real PIV datasets." @default.
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• W1980394012 date "2007-10-10" @default.
• W1980394012 modified "2023-10-17" @default.
• W1980394012 title "Variational second order flow estimation for PIV sequences" @default.
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• W1980394012 doi "https://doi.org/10.1007/s00348-007-0402-3" @default.
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