TY - JOUR
T1 - Wavelets and Optical Flow Motion Estimation
JO - Numerical Mathematics: Theory, Methods and Applications
VL - 1
SP - 116
EP - 137
PY - 2013
DA - 2013/06
SN - 6
DO - http://doi.org/10.4208/nmtma.2013.mssvm07
UR - https://global-sci.org/intro/article_detail/nmtma/5897.html
KW - Wavelets, optical flow, motion estimation, large displacements, fluid flows.
AB - <p style="text-align: justify;">This article describes the implementation of a simple wavelet-based
optical-flow motion estimator dedicated to continuous motions such as
fluid flows. The wavelet representation of the unknown velocity field is
considered. This scale-space representation, associated to a simple
gradient-based optimization algorithm, sets up a well-defined multiresolution
framework for the optical flow estimation. Moreover, a very simple closure
mechanism, approaching locally the solution by high-order polynomials is
provided by truncating the wavelet basis at fine scales. Accuracy and efficiency
of the proposed method are evaluated on image sequences of turbulent fluid flows.</p>