by Debevec, Paul, Tchou, Chris, Gardner, Andrew, Hawkins, Tim, Poullis, Charis, Stumpfel, Jessi, Jones, Andrew, Yun, Nathaniel, Einarsson, Per, Lundgren, Therese, Fajardo, Marcos and Martinez, Philippe
Abstract:
We present a process for estimating spatially-varying surface re- flectance of a complex scene observed under natural illumination conditions. The process uses a laser-scanned model of the scene's geometry, a set of digital images viewing the scene's surfaces under a variety of natural illumination conditions, and a set of correspond- ing measurements of the scene's incident illumination in each pho- tograph. The process then employs an iterative inverse global illu- mination technique to compute surface colors for the scene which, when rendered under the recorded illumination conditions, best re- produce the scene's appearance in the photographs. In our process we measure BRDFs of representative surfaces in the scene to better model the non-Lambertian surface reflectance. Our process uses a novel lighting measurement apparatus to record the full dynamic range of both sunlit and cloudy natural illumination conditions. We employ Monte-Carlo global illumination, multiresolution geome- try, and a texture atlas system to perform inverse global illumina- tion on the scene. The result is a lighting-independent model of the scene that can be re-illuminated under any form of lighting. We demonstrate the process on a real-world archaeological site, show- ing that the technique can produce novel illumination renderings consistent with real photographs as well as reflectance properties that are consistent with ground-truth reflectance measurements.
Reference:
Estimating Surface Reflectance Properties of a Complex Scene under Captured Natural Illumination (Debevec, Paul, Tchou, Chris, Gardner, Andrew, Hawkins, Tim, Poullis, Charis, Stumpfel, Jessi, Jones, Andrew, Yun, Nathaniel, Einarsson, Per, Lundgren, Therese, Fajardo, Marcos and Martinez, Philippe), Technical report ICT TR 06 2004, University of Southern California Institute for Creative Technologies, 2004.
Bibtex Entry:
@techreport{debevec_estimating_2004,
type = {{ICT} {Technical} {Report}},
title = {Estimating {Surface} {Reflectance} {Properties} of a {Complex} {Scene} under {Captured} {Natural} {Illumination}},
url = {http://ict.usc.edu/pubs/ICT-TR-06.2004.pdf},
abstract = {We present a process for estimating spatially-varying surface re- flectance of a complex scene observed under natural illumination conditions. The process uses a laser-scanned model of the scene's geometry, a set of digital images viewing the scene's surfaces under a variety of natural illumination conditions, and a set of correspond- ing measurements of the scene's incident illumination in each pho- tograph. The process then employs an iterative inverse global illu- mination technique to compute surface colors for the scene which, when rendered under the recorded illumination conditions, best re- produce the scene's appearance in the photographs. In our process we measure BRDFs of representative surfaces in the scene to better model the non-Lambertian surface reflectance. Our process uses a novel lighting measurement apparatus to record the full dynamic range of both sunlit and cloudy natural illumination conditions. We employ Monte-Carlo global illumination, multiresolution geome- try, and a texture atlas system to perform inverse global illumina- tion on the scene. The result is a lighting-independent model of the scene that can be re-illuminated under any form of lighting. We demonstrate the process on a real-world archaeological site, show- ing that the technique can produce novel illumination renderings consistent with real photographs as well as reflectance properties that are consistent with ground-truth reflectance measurements.},
number = {ICT TR 06 2004},
institution = {University of Southern California Institute for Creative Technologies},
author = {Debevec, Paul and Tchou, Chris and Gardner, Andrew and Hawkins, Tim and Poullis, Charis and Stumpfel, Jessi and Jones, Andrew and Yun, Nathaniel and Einarsson, Per and Lundgren, Therese and Fajardo, Marcos and Martinez, Philippe},
year = {2004},
keywords = {Graphics}
}