Title :
A survey of shadow algorithms
Author :
Woo, Andrew ; Poulin, Pierre ; Fournier, Alain
Author_Institution :
Alias Res., Toronto, Ont., Canada
Abstract :
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.<>
Keywords :
computer graphics; geometrical optics; complex modeling primitives; complexities; hard shadows; ray training; rendering techniques; shadow algorithms; soft shadows; transparent objects; Algorithm design and analysis; Computer displays; Filters; Image generation; Image resolution; Layout; Light sources; Pixel; Ray tracing; Shape;
Journal_Title :
Computer Graphics and Applications, IEEE
