DMCA
Optical Flow Computation in the Log-Polar Plane (1995)
| Venue: | in Proc. Int. Conf. on computer analysis of images and patterns CAIP |
| Citations: | 6 - 0 self |
BibTeX
@INPROCEEDINGS{Daniilidis95opticalflow,
author = {Kostas Daniilidis and Volker Krüger},
title = {Optical Flow Computation in the Log-Polar Plane},
booktitle = {in Proc. Int. Conf. on computer analysis of images and patterns CAIP},
year = {1995},
pages = {65--72}
}
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Abstract
: Vision systems with spatially homogeneous resolution are not able to provide a real time response in a dynamically changing environment. A reactive behavior necessitates selective sensing in space. Such a selection can be accomplished by the combination of a space-variant resolution scheme and a sensor with controllable degrees of freedom. The field of view is split into a homogeneous high resolution area - the fovea - and the periphery with decreasing resolution. Both in neurobiology and in robot vision, models of the resolution decrease towards the image boundaries have been established. The most convincing model is the theory of logarithmic polar mapping. In this paper we propose two new methods for the estimation of the optical flow and its spatial derivatives in the log-polar plane. We study analytically and experimentally the effects of the polar deformation and the decimation due to subsampling on the computation of optical flow. 1 Introduction This paper is concerned with ...
Keyphrases
log-polar plane optical flow computation optical flow controllable degree convincing model space-variant resolution scheme new method real time response resolution decrease polar deformation image boundary spatial derivative homogeneous resolution logarithmic polar mapping reactive behavior necessitates homogeneous high resolution area robot vision vision system
