| authors |
Weghorst, H., Hooper, G., and Greenberg, D. |
| year |
1984 |
| title |
Improved Computational Methods for Ray Tracing |
| source |
ACM Trans. on Graphics, vol. 3, no. 1, pp. 52-69, Jan. 1984 |
| summary |
This paper describes algorithmic procedures that have been implemented to reduce the computational expense of producing ray-traced images. The selection of bounding volumes is examined to reduce the computational cost of the ray-intersection test. The use of object coherence, which relies on a hierarchical description of the environment, is then presented. Finally, since the building of the ray-intersection trees is such a large portion of the computation, a method using image coherence is described. This visible-surface preprocessing method, which is dependent upon the creation of an "item buffer," takes advantage of a priori image information. Examples that indicate the efficiency of these techniques for a variety of representative environments are presented. |
| series |
other |
| full text |
 file.pdf (1,396,711 bytes) |
| references |
Content-type: text/plain
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| last changed |
2003/04/23 15:50 |
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