نتایج جستجو برای: displacement fields

تعداد نتایج: 297850  

Journal: :IEEE transactions on image processing : a publication of the IEEE Signal Processing Society 1995
James C. Brailean Aggelos K. Katsaggelos

We develop a recursive model-based maximum a posteriori (MAP) estimator that simultaneously estimates the displacement vector field (DVF) and the intensity field from a noisy-blurred image sequence. Current motion-compensated spatio-temporal noise filters treat the estimation of the DVF as a preprocessing step. Generally, no attempt is made to verify the accuracy of these estimates prior to the...

Journal: :Journal of the Royal Society, Interface 2010
Y Feng T M Abney R J Okamoto R B Pless G M Genin P V Bayly

This study describes the measurement of fields of relative displacement between the brain and the skull in vivo by tagged magnetic resonance imaging and digital image analysis. Motion of the brain relative to the skull occurs during normal activity, but if the head undergoes high accelerations, the resulting large and rapid deformation of neuronal and axonal tissue can lead to long-term disabil...

Journal: :Numerische Mathematik 2002
Douglas N. Arnold Ragnar Winther

There have been many efforts, dating back four decades, to develop stablemixed finite elements for the stress-displacement formulation of the plane elasticity system. This requires the development of a compatible pair of finite element spaces, one to discretize the space of symmetric tensors in which the stress field is sought, and one to discretize the space of vector fields in which the displ...

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