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VC
2010

Color invariant chroma keying and color spill neutralization for dynamic scenes and cameras

13 years 2 months ago
Color invariant chroma keying and color spill neutralization for dynamic scenes and cameras
Abstract In this article we show, how temporal backdrops that alternately change their color rapidly at recording rate can aid chroma keying by transforming color spill into a neutral background illumination. Since the chosen colors sum up to white, the chromatic (color) spill component is neutralized when integrating over both backdrop states. The ability to separate both states additionally allows to compute high quality alpha mattes. Besides the neutralization of color spill, our method is invariant to foreground colors and supports applications with real-time demands. In this article, we explain different realizations of temporal backdrops and describe how keying and color spill neutralization are carried out, how artifacts resulting from rapid motion can be reduced, and how our approach can be implemented to be compatible with common real-time postproduction pipelines.
Anselm Grundhöfer, Daniel Kurz, Sebastian Thi
Added 31 Jan 2011
Updated 31 Jan 2011
Type Journal
Year 2010
Where VC
Authors Anselm Grundhöfer, Daniel Kurz, Sebastian Thiele, Oliver Bimber
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