학술논문
Optical flow robust estimation in a hybrid multi-resolution MRF framework
Document Type
Conference
Author
Source
2008 IEEE International Conference on Acoustics, Speech and Signal Processing Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on. :793-796 Mar, 2008
Subject
Language
ISSN
1520-6149
2379-190X
2379-190X
Abstract
We propose in this paper a robust multi-resolution technique to estimate dense velocity field from image sequences. It couples a Gaussian pyramidal down-sampling decomposition together with a multi-grid approach. At each pyramid level, bilinear interpolation and efficient warping techniques are performed to generate a residual images. The displacement field is computed in a Markov Random Field (MRF) framework. We compare two different methods to minimize the Gibbs energy: a modified Iterative Conditional Mode (ICM) and a Graph-Cut algorithm extended to multi-grid scheme. We validate and demonstrate the robustness of our approach on synthetic and real images for fluid experiment applications.