Title
A multidirectional occlusion shading model for direct volume rendering
Abstract
In this paper, we present a novel technique which simulates directional light scattering for more realistic interactive visualization of volume data. Our method extends the recent directional occlusion shading model by enabling light source positioning with practically no performance penalty. Light transport is approximated using a tilted cone-shaped function which leaves elliptic footprints in the opacity buffer during slice-based volume rendering. We perform an incremental blurring operation on the opacity buffer for each slice in front-to-back order. This buffer is then used to define the degree of occlusion for the subsequent slice. Our method is capable of generating high-quality soft shadowing effects, allows interactive modification of all illumination and rendering parameters, and requires no pre-computation.
Year
DOI
Venue
2010
10.1111/j.1467-8659.2009.01695.x
Comput. Graph. Forum
Keywords
Field
DocType
volume rendering,light scattering,shading
Computer vision,Volume rendering,Computer graphics (images),Computer science,3D rendering,Opacity,Interactive visualization,Artificial intelligence,Rendering (computer graphics),Rendering equation,Shading,Light scattering
Journal
Volume
Issue
ISSN
29
3
0167-7055
Citations 
PageRank 
References 
18
0.68
18
Authors
4
Name
Order
Citations
PageRank
Veronika Soltészová1655.80
Daniel Patel21167.99
Stefan Bruckner393758.31
Ivan Viola466042.16