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Issue No.06 - November/December (1990 vol.10)
pp: 10-12
ABSTRACT
<p>The author comments on an article by M. Berger et al. (ibid., vol.10, no.3, p.36-41, 1990), which describes a model for forming a mirage. In particular, he makes some points regarding their interpretation of the model and their description of their implementation of a version of it. He points out that the primary bending agent in mirage formation is total reflection, not refraction, as Berger et al. suggest. This in turn indicates that a purely reflective model, without refraction might well be sufficient. The author asserts that this would be beneficial, as dispersive ray tracing is not particularly easy or inexpensive to implement, and it would obviate the statement by Berger et al. that the use of layers allows a digitized approach to the continuous spectrum. A response by M. Berger, essentially agreeing with the author, is included.</p>
CITATION
F. Kenton Musgrave, "A Note on Ray Tracing Mirages", IEEE Computer Graphics and Applications, vol.10, no. 6, pp. 10-12, November/December 1990, doi:10.1109/38.62692
REFERENCES
1. E. Fabri, G. Fiorio, F. Lazzeri, and P. Violino, "Mirage in the Laboratory."Am. J. Physics, Vol. 50, No. 6, Jan. 1982, pp. 517-521.
2. E. Kuhlar, K. Thyagarajan, and A.K. Ghatak, "A Note on Mirage Formation."Am. J. Physics. Vol. 45, No. 1, Jan. 1977, pp. 90-93.
3. R.M. Besancon,The Encyclopedia of Physics. Van Nostrand Reinhold, New York, 1974.
4. D. F. Rogers,Procedural Elements for Computer Graphics. New York: McGraw-Hill, 1985.
5. R. W. Wood,Physical Optics, MacMillan, New York, 1911.
6. S.W. Thomas. "Dispersive Refraction in Ray Tracing."Visual Computer. Vol. 2, No. 1, Jan. 1986, pp. 3-8.
7. F.K. Musgrave, "Prisms and Rainbows: A Dispersion Model for Computer Graphics."Proc. Graphics Interface 89-Vision Interface 89. Canadian Information Processing Society, Toronto, Ontario, June, 1989.
8. F.K. Musgrave.A Realistic Model of Refraction for Computer Graphics. master's thesis, Univ. of California, Santa Cruz, Calif., 1987.
9. M.C. Stone, W.B. Cowan, and J.C. Beatty, "Color Gamut Mapping and the Printing of Digital Color Images."Trans. Graphics, Vol. 7, No. 4, Oct. 1988, pp. 249-292.
10. G. Wyszecki and W.S. Stiles,Color Science: Concepts and Methods. Quantitative Methods and Formulas, Wiley-Interscience, New York, 1967.
11. T. Whitted, "An Improved Illumination Model for Shaded Display,"Comm. ACM, Vol. 23, No. 6, June 1980, pp. 343- 349.
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