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231223s2002 xx |||||o 00| ||eng c |
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|a 10.1109/TIP.2002.802531
|2 doi
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|a eng
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|a Barnard, Kobus
|e verfasserin
|4 aut
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|a A comparison of computational color constancy algorithms--part I
|b methodology and experiments with synthesized data
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|c 2002
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 20.05.2010
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|a Date Revised 05.02.2008
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We introduce a context for testing computational color constancy, specify our approach to the implementation of a number of the leading algorithms, and report the results of three experiments using synthesized data. Experiments using synthesized data are important because the ground truth is known, possible confounds due to camera characterization and pre-processing are absent, and various factors affecting color constancy can be efficiently investigated because they can be manipulated individually and precisely. The algorithms chosen for close study include two gray world methods, a limiting case of a version of the Retinex method, a number of variants of Forsyth's gamut-mapping method, Cardei et al.'s neural net method, and Finlayson et al.'s color by correlation method. We investigate the ability of these algorithms to make estimates of three different color constancy quantities: the chromaticity of the scene illuminant, the overall magnitude of that illuminant, and a corrected, illumination invariant, image. We consider algorithm performance as a function of the number of surfaces in scenes generated from reflectance spectra, the relative effect on the algorithms of added specularities, and the effect of subsequent clipping of the data. All data is available on-line at http://www.cs.sfu.ca/(tilde)color/data, and implementations for most of the algorithms are also available (http://www.cs.sfu.ca/(tilde)color/code)
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|a Journal Article
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1 |
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|a Cardei, Vlad
|e verfasserin
|4 aut
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| 700 |
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|a Funt, Brian
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
|d 1992
|g 11(2002), 9 vom: 15., Seite 972-83
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|x 1941-0042
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|g volume:11
|g year:2002
|g number:9
|g day:15
|g pages:972-83
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|u http://dx.doi.org/10.1109/TIP.2002.802531
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