Share Email Print

Proceedings Paper

Ray-casting time-varying volume data sets with frame-to-frame coherence
Author(s): Dani Tost; Sergi Grau; Maria Ferre; Anna Puig
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The goal of this paper is the proposal and evaluation of a ray-casting strategy that takes advantage of the spatial and temporal coherence in image-space as well as in object-space in order to speed up rendering. It is based on a double structure: in image-space, a temporal buffer that stores for each pixel the next instant of time in which the pixel must be recomputed, and in object-space a Temporal Run-Length Encoding of the voxel values through time. The algorithm skips empty and unchanged pixels through three different space-leaping strategies. It can compute the images sequentially in time or generate them simultaneously in batch. In addition, it can handle simultaneously several data modalities. Finally, an on-purpose out-of-core strategy is used to handle large datasets. The tests performed on two medical datasets and various phantom datasets show that the proposed strategy significantly speeds-up rendering.

Paper Details

Date Published: 16 January 2006
PDF: 12 pages
Proc. SPIE 6060, Visualization and Data Analysis 2006, 606006 (16 January 2006); doi: 10.1117/12.649814
Show Author Affiliations
Dani Tost, Univ. Politècnica de Catalunya (Spain)
Sergi Grau, Univ. Politècnica de Catalunya (Spain)
Maria Ferre, Univ. Rovira i Virgili (Spain)
Anna Puig, Univ. de Barcelona (Spain)

Published in SPIE Proceedings Vol. 6060:
Visualization and Data Analysis 2006
Robert F. Erbacher; Jonathan C. Roberts; Matti T. Gröhn; Katy Börner, Editor(s)

© SPIE. Terms of Use
Back to Top