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Issue No. 06 - November/December (1990 vol. 10)
ISSN: 0272-1716
pp: 13-32
<p>The various types of shadows are characterized. Most existing shadow algorithms are described, and their complexities, advantages, and shortcomings are discussed. Hard shadows, soft shadows, shadows of transparent objects, and shadows for complex modeling primitives are considered. For each type, shadow algorithms within various rendering techniques are examined. The aim is to provide readers with enough background and insight on the various methods to allow them to choose the algorithm best suited to their needs and to help identify the areas that need more research and point to possible solutions.</p>

P. Poulin, A. Fournier and A. Woo, "A Survey of Shadow Algorithms," in IEEE Computer Graphics and Applications, vol. 10, no. , pp. 13-32, 1990.
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