A rendering algorithm for visualizing 3D scalar fields

1 June 1988

journal article
Published by Association for Computing Machinery (ACM) in ACM SIGGRAPH Computer Graphics

Vol. 22 (4) , 51-58
https://doi.org/10.1145/378456.378476

Abstract

This paper presents a ray tracing algorithm for rendering 3D scalar fields. An illumination model is developed in which the field is characterized as a varying density emittter with a single level of scattering. This model is equivalent to a particle system in which the particles are sufficiently small. Along each ray cast from the eye, the field is expressed as a function of the ray parameter. The algorithm computes properties of the field along the ray such as the attenuated intensity, the peak density, and the center of gravity, etc., These are mapped into HSV color space to produce an image for visualization.Images produced in this manner are perceived as a varying density 'cloud' where color highlights the computed attributes. The application of this technique is demonstrated for visualizing a three dimensional seismic data set.

Keywords

This publication has 19 references indexed in Scilit:

Modeling the effect of the atmosphere on light
ACM Transactions on Graphics, 1987
Shading 3D-Images from CT Using Gray-Level Gradients
IEEE Transactions on Medical Imaging, 1986
Surface Shading in the Cuberille Environment
IEEE Computer Graphics and Applications, 1985
Back-to-Front Display of Voxel Based Objects
IEEE Computer Graphics and Applications, 1985
Ray tracing volume densities
ACM SIGGRAPH Computer Graphics, 1984
Color Display and Interactive Interpretation of Three-Dimensional Data
IBM Journal of Research and Development, 1983
Light reflection functions for simulation of clouds and dusty surfaces
ACM SIGGRAPH Computer Graphics, 1982
Computer display of height fields
Computers & Graphics, 1980
A terrain and cloud computer image generation model
ACM SIGGRAPH Computer Graphics, 1979
Texture and reflection in computer generated images
Communications of the ACM, 1976