Imperial College London
Alternate

ProfessorAbhijeetGhosh

Faculty of Engineering, Department of Computing

Professor of Graphics and Imaging
 
 
 
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Contact

 

+44 (0)20 7594 8351abhijeet.ghosh Website

 
 
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Location

 

376Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Toisoul:2016:10.1145/2998559.2998567,
author = {Toisoul, A and Ghosh, A},
doi = {10.1145/2998559.2998567},
publisher = {ACM},
title = {Image-based relighting using room lighting basis},
url = {http://dx.doi.org/10.1145/2998559.2998567},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - We present a novel and practical approach for image-based relighting that employs the lights available in a regular room to acquire the reflectance field of an object. The lighting basis includes diverse light sources such as the house lights and the natural illumination coming from the windows. Once the data is captured, we homogenize the reflectance field to take into account the variety of light source colours to minimise the tone difference in the reflectance field. Additionally, we measure the room dark level corresponding to a small amount of global illumination with all lights switched off and blinds drawn. The dark level, due to some light leakage through the blinds, is removed from the individual local lighting basis conditions and employed as an additional global lighting basis. Finally we optimize the projection of a desired lighting environment on to our room lighting basis to get a close approximation of the environment with our sparse lighting basis. We achieve plausible results for diffuse and glossy objects that are qualitatively similar to results produced with dense sampling of the reflectance field including using a light stage and we demonstrate effective relighting results in two different room configurations. We believe our approach can be applied for practical relighting applications with general studio lighting.
AU  - Toisoul,A
AU  - Ghosh,A
DO  - 10.1145/2998559.2998567
PB  - ACM
PY  - 2016///
TI  - Image-based relighting using room lighting basis
UR  - http://dx.doi.org/10.1145/2998559.2998567
UR  - http://hdl.handle.net/10044/1/42933
ER  -
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