Title
Characteristic point maps
Abstract
Extremely dense spatial sampling is often needed to prevent aliasing when rendering objects with high frequency variations in geometry and reflectance. To accelerate the rendering process, we introduce characteristic point maps (CPMs), a hierarchy of view-independent points, which are chosen to preserve the appearance of the original model across different scales. In preprocessing, randomized matrix column sampling is used to reduce an initial dense sampling to a minimum number of characteristic points with associated weights. In rendering, the reflected radiance is computed using a weighted average of reflectances from characteristic points. Unlike existing techniques, our approach requires no restrictions on the original geometry or reflectance functions.
Year
DOI
Venue
2009
10.1111/j.1467-8659.2009.01500.x
Comput. Graph. Forum
Keywords
Field
DocType
associated weight,characteristic point map,randomized matrix column sampling,original model,original geometry,dense spatial sampling,characteristic point,rendering process,initial dense sampling,reflectance function
Computer vision,Computer science,Matrix (mathematics),Aliasing,Preprocessor,Sampling (statistics),Artificial intelligence,Rendering (computer graphics),Reflectivity,Radiance,Rendering equation
Journal
Volume
Issue
ISSN
28
4
0167-7055
Citations 
PageRank 
References 
10
0.53
21
Authors
3
Name
Order
Citations
PageRank
Hongzhi Wu121811.05
Julie Dorsey22535182.80
Holly Rushmeier32294334.25