Affiliations: School of Engineering, University of Tokyo, 5-1-5
Kashiwanoha, Kashiwa-shi, Chiba 277-8568, Japan. E-mail:
micoo@race.u-tokyo.ac.jp | Graduate School of Humanities and Sciences, Ochanomizu
University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan | RACE, University of Tokyo, 5-1-5 Kashiwanoha,
Kashiwa-shi, Chiba 277-8568, Japan
Abstract: In this paper, we focus on visualization of a 3D scalar field
composed of volume data by means of semi-transparent multiple isosurface
extraction. A new method for displaying semi-transparent multiple isosurfaces
will be proposed to fulfill real-time rendering of scalar fields. The proposed
method is considered to be an extension of ISSUE, which is a known algorithm to
quickly generate isosurfaces. ISSUE uses a 2D span space, where minimum values
of computational cells are assigned to the horizontal axis, and maximum values
of cells are assigned to the vertical axis. In the proposed algorithm,
computational cells are placed onto a 3D span space. The third axis is the
distance from the viewpoint. The proposed algorithm can quickly search for the
cells intersecting with isosurfaces using the span space in back-to-front order
and can realize representation of semi-transparent multiple isosurfaces.
