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Proceedings Paper

Real-time volume rendering of 4D image using 3D texture mapping
Author(s): Jinwoo Hwang; June-Sic Kim; Jae Seok Kim; In Young Kim; Sun Il Kim
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Paper Abstract

Four dimensional image is 3D volume data that varies with time. It is used to express deforming or moving object in virtual surgery of 4D ultrasound. It is difficult to render 4D image by conventional ray-casting or shear-warp factorization methods because of their time-consuming rendering time or pre-processing stage whenever the volume data are changed. Even 3D texture mapping is used, repeated volume loading is also time-consuming in 4D image rendering. In this study, we propose a method to reduce data loading time using coherence between currently loaded volume and previously loaded volume in order to achieve real time rendering based on 3D texture mapping. Volume data are divided into small bricks and each brick being loaded is tested for similarity to one which was already loaded in memory. If the brick passed the test, it is defined as 3D texture by OpenGL functions. Later, the texture slices of the brick are mapped into polygons and blended by OpenGL blending functions. All bricks undergo this test. Continuously deforming fifty volumes are rendered in interactive time with SGI ONYX. Real-time volume rendering based on 3D texture mapping is currently available on PC.

Paper Details

Date Published: 28 May 2001
PDF: 7 pages
Proc. SPIE 4319, Medical Imaging 2001: Visualization, Display, and Image-Guided Procedures, (28 May 2001); doi: 10.1117/12.428099
Show Author Affiliations
Jinwoo Hwang, Hanyang Univ. (South Korea)
June-Sic Kim, Hanyang Univ. (South Korea)
Jae Seok Kim, Hanyang Univ. (South Korea)
In Young Kim, Hanyang Univ. (South Korea)
Sun Il Kim, Hanyang Univ. (South Korea)


Published in SPIE Proceedings Vol. 4319:
Medical Imaging 2001: Visualization, Display, and Image-Guided Procedures
Seong Ki Mun, Editor(s)

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