Title :
B-Spline Image Model for Energy Minimization-Based Optical Flow Estimation
Author :
Le Besnerais, Guy ; Champagnat, Frederic
Author_Institution :
ONERA, Chatillon
Abstract :
Robust estimation of the optical flow is addressed through a multiresolution energy minimization. It involves repeated evaluation of spatial and temporal gradients of image intensity which rely usually on bilinear interpolation and image filtering. We propose to base both computations on a single pyramidal cubic B-spline model of image intensity. We show empirically improvements in convergence speed and estimation error and validate the resulting algorithm on real test sequences
Keywords :
filtering theory; interpolation; optical images; splines (mathematics); B-spline image model; bilinear interpolation; convergence speed; energy minimization-based optical flow estimation; estimation error; image filtering; image intensity; multiresolution energy minimization; pyramidal cubic B-spline model; Convergence; Energy resolution; Estimation error; Filtering; Image motion analysis; Interpolation; Optical filters; Robustness; Spatial resolution; Spline; Optical flow (OF); robust estimation; splines;
Journal_Title :
Image Processing, IEEE Transactions on
DOI :
10.1109/TIP.2006.877485
