“Ray tracing with cones” by Amanatides

  • ©John Amanatides

Conference:


Type(s):


Title:

    Ray tracing with cones

Presenter(s)/Author(s):



Abstract:


    A new approach to ray tracing is introduced. The definition of a “ray” is extended into a cone by including information on the spread angle and the virtual origin. The advantages of this approach, which tries to model light propagation with more fidelity, include a better method of anti-aliasing, a way of calculating fuzzy shadows and dull reflections, a method of calculating the correct level of detail in a procedural model and texture map, and finally, a procedure for faster intersection calculation.

References:


    1. Amanatides, J., and Fournier, A., “Ray Casting using Divide and Conquer in Screen Space”, Proc. Intl. Conf. of Engineering and Computer Graphics, Beijing, China, Aug. 27 – Sept. 1 1984.
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    12. Hect, E., and Zajac, A., OPTICS, Addison Wesley Publishing Company, Reading Massachusetts, 1974.
    13. Kajiya, J.T., “New Techniques For Ray Tracing Procedurally Defined Objects”, Computer Graphics, Vol. 17(3), July 1983, pp. 91-102.
    14. Rubin, S.M., and Whitted, T., “A 3-Dimensional Representation for Fast Rendering of Complex Scenes”, Computer Graphics, Vol. 14(3), July 1980, pp. 110-116.
    15. Roth, S.D., “Ray Casting for Modeling Solids”, Computer Graphics and Image Processing, Vol. 18, 1982, pp. 109-144.
    16. Warnock, J., A Hidden-Surface Algorithm for Computer Generated Half-Tone Pictures, Univ. Utah Computer Sci. Dept., TR 4-15, 1969, NTIS AD-733 671.
    17. Whitted, T., “An Improved Illumination Model for Shaded Display”, Comm. ACM, Vol. 23(6), June 1980, pp. 343-349.
    18. Williams, L., “Pyramidal Parametrics”, Computer Graphics, Vol. 17(3), July 1983, pp. 1-11.


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