“Virtual spherical lights for many-light rendering of glossy scenes”
Conference:
Type(s):
Title:
- Virtual spherical lights for many-light rendering of glossy scenes
Session/Category Title: Global illumination
Presenter(s)/Author(s):
Moderator(s):
Abstract:
In this paper, we aim to lift the accuracy limitations of many-light algorithms by introducing a new light type, the virtual spherical light (VSL). The illumination contribution of a VSL is computed over a non-zero solid angle, thus eliminating the illumination spikes that virtual point lights used in traditional many-light methods are notorious for. The VSL enables application of many-light approaches in scenes with glossy materials and complex illumination that could previously be rendered only by much slower algorithms. By combining VSLs with the matrix row-column sampling algorithm, we achieve high-quality images in one to four minutes, even in scenes where path tracing or photon mapping take hours to converge.
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