What Do Color Changes Reveal About an Outdoor Scene?

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What Do Color Changes Reveal About an Outdoor Scene?

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Title: What Do Color Changes Reveal About an Outdoor Scene?
Author: Sunkavalli, Kalyan Krishna; Romeiro, Fabiano Segadaes; Matusik, Wojciech; Zickler, Todd; Pfister, Hanspeter

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Citation: Sunkavalli, Kalyan, Fabiano Romeiro, Wojciech Matusik, Todd Zickler, and Hanspeter Pfister. 2008. What do color changes reveal about an outdoor scene? Proceedings: CVPR 2008, IEEE Computer Society Conference on Computer Vision and Pattern Recognition: 1-8.
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Abstract: In an extended image sequence of an outdoor scene, one observes changes in color induced by variations in the spectral composition of daylight. This paper proposes a model for these temporal color changes and explores its use for the analysis of outdoor scenes from time-lapse video data. We show that the time-varying changes in direct sunlight and ambient skylight can be recovered with this model, and that an image sequence can be decomposed into two corresponding components. The decomposition provides access to both radiometric and geometric information about a scene, and we demonstrate how this can be exploited for a variety of visual tasks, including color-constancy, background subtraction, shadow detection, scene reconstruction, and camera geo-location.
Published Version: doi:10.1109/CVPR.2008.4587411
Other Sources: http://gvi.seas.harvard.edu/sites/all/files/ColorChanges_CVPR2008.pdf
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:4100252
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