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231223s2008 xx |||||o 00| ||eng c |
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|a 10.1109/TPAMI.2008.113
|2 doi
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|a eng
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|a Evangelidis, Georgios D
|e verfasserin
|4 aut
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|a Parametric image alignment using enhanced correlation coefficient maximization
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|c 2008
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 22.10.2008
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|a Date Revised 15.08.2008
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|a published: Print
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|a Citation Status MEDLINE
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|a In this work we propose the use of a modified version of the correlation coefficient as a performance criterion for the image alignment problem. The proposed modification has the desirable characteristic of being invariant with respect to photometric distortions. Since the resulting similarity measure is a nonlinear function of the warp parameters, we develop two iterative schemes for its maximization, one based on the forward additive approach and the second on the inverse compositional method. As it is customary in iterative optimization, in each iteration, the nonlinear objective function is approximated by an alternative expression for which the corresponding optimization is simple. In our case we propose an efficient approximation that leads to a closed-form solution (per iteration) which is of low computational complexity, the latter property being particularly strong in our inverse version. The proposed schemes are tested against the Forward Additive Lucas-Kanade and the Simultaneous Inverse Compositional (SIC) algorithm through simulations. Under noisy conditions and photometric distortions, our forward version achieves more accurate alignments and exhibits faster convergence whereas our inverse version has similar performance as the SIC algorithm but at a lower computational complexity
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 700 |
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|a Psarakis, Emmanouil Z
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on pattern analysis and machine intelligence
|d 1979
|g 30(2008), 10 vom: 01. Okt., Seite 1858-65
|w (DE-627)NLM098212257
|x 1939-3539
|7 nnns
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| 773 |
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|g volume:30
|g year:2008
|g number:10
|g day:01
|g month:10
|g pages:1858-65
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|u http://dx.doi.org/10.1109/TPAMI.2008.113
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