Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Using 2- and 21/2-dimensional seed filling in view lattice to accelerate volumetric rendering
Autore:
Oikarinen, J;
Indirizzi:
Oulu Univ Hosp, Dept Diagnost Radiol, Oulu 90221, Finland Oulu Univ Hosp Oulu Finland 90221 t Diagnost Radiol, Oulu 90221, Finland Oulu Univ Hosp, Dept Neurosurg, Oulu 90221, Finland Oulu Univ Hosp Oulu Finland 90221 p, Dept Neurosurg, Oulu 90221, Finland
Titolo Testata:
COMPUTERS & GRAPHICS
fascicolo: 6, volume: 22, anno: 1998,
pagine: 745 - 757
SICI:
0097-8493(199812)22:6<745:U2A2SF>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISPLAY; OBJECTS;
Keywords:
volume visualization; volume rendering; 3D imaging; ray casting; seed filling;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Oikarinen, J Oulu Univ Hosp, Dept Diagnost Radiol, POB 22, Oulu 90221, Finland Oulu Univ Hosp POB 22 Oulu Finland 90221 Oulu 90221, Finland
Citazione:
J. Oikarinen, "Using 2- and 21/2-dimensional seed filling in view lattice to accelerate volumetric rendering", COMPUT GRAP, 22(6), 1998, pp. 745-757

Abstract

In this paper we propose new methods for calculating the projection of an opaque 3-dimensional B-connected volumetric object into a two-dimensional view using 2- and 2 1/2-dimensional seed-filling in the view space. When a 3-dimensional volumetric data set is sampled by parallel rays at a resolution exceeding the Nyquist ratio, the 6-connectivity of objects is maintained from volume lattice to view lattice. Given a seed point for each 6-connected object in the volumetric data set, a seed-filling algorithm may access all sample points in view lattice, while simultaneously composing the rendered view. The algorithms presented in this paper minimize the number of voxels that need to be processed. We implemented these methods on a general purpose computer architecture and tested them with several artificial and real-life medical volumetric data sets. It is shown that the algorithms may be used to speed up the parallel ray casting of opaque medical objects. The actual frame rate achieved by the combined method allows interactive (10 frames/sec) rotation of the object on a common single-processor personal computer without specialized hardware. (C) 1999 Elsevier Science Ltd. Ail rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 08:58:46