Matching with PROSAC - Progressive Sample Consensus
Chum, Ondřej, Matas, Jiří
CVPR 2005, Los Alamitos, USA
Proc. of Conference on Computer Vision and Pattern Recognition (CVPR)
Volume 1, Pages 220-226
June, 2005
Abstract
A new robust matching method is proposed. The Progressive Sample
Consensus (PROSAC) algorithm exploits the linear ordering defined on
the set of correspondences by a similarity function used in
establishing tentative correspondences. Unlike RANSAC, which treats
all correspondences equally and draws random samples uniformly from
the full set, PROSAC samples are drawn from progressively larger sets
of top-ranked correspondences. Under the mild assumption that the
similarity measure predicts correctness of a match better than random
guessing, we show that PROSAC achieves large computational
savings. Experiments demonstrate it is often significantly faster (up
to more than hundred times) than RANSAC. For the derived size of the
sampled set of correspondences as a function of the number of samples
already drawn, PROSAC converges towards RANSAC in the worst case. The
power of the method is demonstrated on widebaseline matching problems.
Keywords
RANSAC, wide-baseline stereo
Bibtex entry
@InProceedings{chum-prosac-cvpr05,
author = {Chum, Ond{\vr}ej and Matas, Ji{\vr}{\'i}},
title = {Matching with {PROSAC} - Progressive Sample Consensus},
booktitle = {Proc. of Conference on Computer Vision and Pattern Recognition (CVPR)},
address = {Los Alamitos, USA} ,
year = {2005},
month = {June},
day = {20--25},
isbn = {0-7695-2372-2},
publisher = {IEEE Computer Society},
pages = {220--226},
annote = { A new robust matching method is proposed. The Progressive
Sample Consensus (PROSAC) algorithm exploits the linear ordering
defined on the set of correspondences by a similarity function used
in establishing tentative correspondences. Unlike RANSAC, which
treats all correspondences equally and draws random samples
uniformly from the full set, PROSAC samples are drawn from
progressively larger sets of top-ranked correspondences. Under the
mild assumption that the similarity measure predicts correctness of
a match better than random guessing, we show that PROSAC achieves
large computational savings. Experiments demonstrate it is often
significantly faster (up to more than hundred times) than
RANSAC. For the derived size of the sampled set of correspondences
as a function of the number of samples already drawn, PROSAC
converges towards RANSAC in the worst case. The power of the method
is demonstrated on widebaseline matching problems. },
keywords = {RANSAC, wide-baseline stereo},
editor = {Schmid, Cordelia and Soatto, Stefano and Tomasi, Carlo},
venue = {San Diego, California, USA },
volume = { 1 },
}