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ACM Transactions on Graphics (TOG), Volume 15 Issue 1, Jan. 1996

Monte Carlo techniques for direct lighting calculations
Peter Shirley, Changyaw Wang, Kurt Zimmerman
Pages: 1-36
DOI: 10.1145/226150.226151
In a distributed ray tracer, the sampling strategy is the crucial part of the direct lighting calculation. Monte Carlo integration with importance sampling is used to carry out this calculation. Importance sampling involves the design of...

Global illumination of glossy environments using wavelets and importance
Per H. Christensen, Eric J. Stollnitz, David H. Salesin, Tony D. DeRose
Pages: 37-71
DOI: 10.1145/226150.226153
We show how importance-driven refinement and a wavelet basis can be combined to provide an efficient solution to the global illumination problem with glossy and diffuse reflections. Importance is used to focus the computation on the interactions...

Sticky splines: definition and manipulation of spline structures with maintained topological relations
C. W. A. M. van Overveld, Marie Luce Viaud
Pages: 72-98
DOI: 10.1145/226150.226154
This paper describes an augmentation to the spline concept to account for topological relations between different spline curves. These topological relations include incidence relations, constraining the extremes of spline curves to other spline...