Multiresolution Reflectance Filtering

Tan, Ping; Lin, Stephen; Quan, Long; Guo, Baining; Shum, Heung-Yeung

Multiresolution Reflectance Filtering

Files

111-116.pdf (2.55 MB)

FinalVideo.mov (98.06 MB)

Date

2005

Authors

Tan, Ping
Lin, Stephen
Quan, Long
Guo, Baining
Shum, Heung-Yeung

Publisher

The Eurographics Association

Abstract

Physically-based reflectance models typically represent light scattering as a function of surface geometry at the pixel level. With changes in viewing resolution, the geometry imaged within a pixel can undergo significant variations that result in changing reflectance characteristics. To address these transformations, we present a multiresolution reflectance framework based on microfacet normal distributions within a pixel over different scales. Since these distributions must be efficiently determined with respect to resolution, they are recorded at multiple resolution levels in mipmaps. The main contribution of this work is a real-time mipmap filtering technique for these distribution-based parameters that not only provides smooth reflectance transitions in scale, but also minimizes aliasing. With this multiresolution reflectance technique, our system can rapidly and accurately incorporate fine reflectance detail that is customarily disregarded in multiresolution rendering methods.

        @inproceedings{:10.2312/EGWR/EGSR05/111-116
,
booktitle = {Eurographics Symposium on Rendering (2005)
},
editor = {Kavita Bala and Philip Dutre
},
title = {{Multiresolution Reflectance Filtering
}},
author = {Tan, Ping and 
Lin, Stephen and 
Quan, Long and 
Guo, Baining and 
Shum, Heung-Yeung
},
year = {2005
},
publisher = {The Eurographics Association
},
ISSN = {1727-3463
},
ISBN = {3-905673-23-1
},
DOI = {/10.2312/EGWR/EGSR05/111-116
}
}