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Statements

Subject Item
n2:RIV%2F68407700%3A21230%2F07%3A03135474%21RIV08-GA0-21230___
rdf:type
n8:Vysledek skos:Concept
dcterms:description
We propose a new affine-covariant feature, the Stable Affine Frame (SAF). SAFs lie on the boundary of extremal regions, ie. on isophotes. Instead of requiring the whole isophote to be stable with respect to intensity perturbation as in maximally stable extremal regions (MSERs), stability is required only locally, for the primitives constituting the three-point frames. The primitives are extracted by an affine invariant process that exploits properties of bitangents and algebraic moments. Thus, instead of using closed stable isophotes, ie. MSERs, and detecting affine frames on them, SAFs are sought even on some unstable extremal regions. We show experimentally on standard datasets that SAFs have repeatability comparable to the best affine covariant detectors and consistently produce a significantly higher number of features per image. Moreover, the features cover images more evenly than MSERs, which facilitates robustness to occlusion. We propose a new affine-covariant feature, the Stable Affine Frame (SAF). SAFs lie on the boundary of extremal regions, ie. on isophotes. Instead of requiring the whole isophote to be stable with respect to intensity perturbation as in maximally stable extremal regions (MSERs), stability is required only locally, for the primitives constituting the three-point frames. The primitives are extracted by an affine invariant process that exploits properties of bitangents and algebraic moments. Thus, instead of using closed stable isophotes, ie. MSERs, and detecting affine frames on them, SAFs are sought even on some unstable extremal regions. We show experimentally on standard datasets that SAFs have repeatability comparable to the best affine covariant detectors and consistently produce a significantly higher number of features per image. Moreover, the features cover images more evenly than MSERs, which facilitates robustness to occlusion. We propose a new affine-covariant feature, the Stable Affine Frame (SAF). SAFs lie on the boundary of extremal regions, ie. on isophotes. Instead of requiring the whole isophote to be stable with respect to intensity perturbation as in maximally stable extremal regions (MSERs), stability is required only locally, for the primitives constituting the three-point frames. The primitives are extracted by an affine invariant process that exploits properties of bitangents and algebraic moments. Thus, instead of using closed stable isophotes, ie. MSERs, and detecting affine frames on them, SAFs are sought even on some unstable extremal regions. We show experimentally on standard datasets that SAFs have repeatability comparable to the best affine covariant detectors and consistently produce a significantly higher number of features per image. Moreover, the features cover images more evenly than MSERs, which facilitates robustness to occlusion.
dcterms:title
Stable Affine Frames on Isophotes Stable Affine Frames on Isophotes Stable Affine Frames on Isophotes
skos:prefLabel
Stable Affine Frames on Isophotes Stable Affine Frames on Isophotes Stable Affine Frames on Isophotes
skos:notation
RIV/68407700:21230/07:03135474!RIV08-GA0-21230___
n3:strany
Nečíslováno
n3:aktivita
n9:P
n3:aktivity
P(GA201/06/1821)
n3:dodaniDat
n6:2008
n3:domaciTvurceVysledku
n15:1711326 n15:9562001 n15:2734621
n3:druhVysledku
n18:D
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
451994
n3:idVysledku
RIV/68407700:21230/07:03135474
n3:jazykVysledku
n17:eng
n3:klicovaSlova
LAF; MSER; affine; covariant; detector; local affine frames; maximally stable extremal regions
n3:klicoveSlovo
n5:MSER n5:covariant n5:maximally%20stable%20extremal%20regions n5:LAF n5:detector n5:affine n5:local%20affine%20frames
n3:kontrolniKodProRIV
[3EFE93615D79]
n3:mistoKonaniAkce
Rio de Janeiro
n3:mistoVydani
Madison
n3:nazevZdroje
ICCV 2007: Proceedings of Eleventh IEEE International Conference on Computer Vision
n3:obor
n13:JD
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n20:GA201%2F06%2F1821
n3:rokUplatneniVysledku
n6:2007
n3:tvurceVysledku
Obdržálek, Štěpán Perďoch, Michal Matas, Jiří
n3:typAkce
n19:WRD
n3:zahajeniAkce
2007-10-14+02:00
s:numberOfPages
8
n10:hasPublisher
Omnipress
n21:isbn
978-1-4244-1630-1
n11:organizacniJednotka
21230