Adaptive Sampling in Single Pass, GPU-based Raycasting of Multiresolution Volumes

Ljung, Patric

Adaptive Sampling in Single Pass, GPU-based Raycasting of Multiresolution Volumes

Files

039-046.pdf (514.26 KB)

Date

2006

Authors

Ljung, Patric

Publisher

The Eurographics Association

Abstract

This paper presents a novel direct volume rendering technique for adaptive object- and image-space sampling density of multiresolution volumes. The raycasting is implemented entirely on the GPU in a single pass fragment program which adapts the sampling density along rays, guided by block resolutions. The multiresolution volumes are provided by a transfer function based level-of-detail scheme adaptively loading large out-of-core volumes. Adaptive image-space sampling is achieved by gathering projected basic volume block statistics for screen tiles and then allocating a level-of-detail for each tile. This combination of techniques provides a significant reduction of processing requirements while maintaining high quality rendering.

        @inproceedings{:10.2312/VG/VG06/039-046
,
booktitle = {Volume Graphics
},
editor = {Raghu Machiraju and Torsten Moeller
},
title = {{Adaptive Sampling in Single Pass, GPU-based Raycasting of Multiresolution Volumes
}},
author = {Ljung, Patric
},
year = {2006
},
publisher = {The Eurographics Association
},
ISSN = {1727-8376
},
ISBN = {3-905673-41-X
},
DOI = {/10.2312/VG/VG06/039-046
}
}