August 2013
Beginner to intermediate
1264 pages
52h 45m
English
book
Hughes/Computer Graphics, 3/E
by Kurt Akeley, James D. Foley, David F. Sklar, Morgan McGuire, John F. Hughes, Andries van Dam, Steven K. Feiner
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Chapter 31. Computing Solutions to the Rendering Equation: Theoretical Approaches
31.1. Introduction
In this chapter we discuss the theory of solving the rendering equation, concentrating on the mathematics of various approaches and on what kinds of approximations are involved in these approaches, deferring the implementation details to the next chapter. Fortunately, much of the mathematics can be understood by analogy with far simpler problems. When we render, we’re trying to compute values of L, the radiance field, or expressions involving combinations (typically integrals) of many values of L. Thus, the unknown is the whole function L. That’s in sharp contrast to the equations like
that we see in algebra class, where the unknown, x, is a ...
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