PBRT: Physically Based Rendering Theory
As ray tracer are not bound by real-time constraints they allow for physically accurate algorithms to render stunning imagery. This section summarizes thoughts, analysis and exercises in such rendering systems. Due to it's accessibility most articles are based on the excellent book and corresponding ray tracer pbrt by Matt Pharr.
Recreating realistic bokeh by biasing lens-sample positions
Ex 6.4: Unlike real lenses most ray-tracer only consider a perfectly disk-shaped circle of confusion. However the distorted circle of confusion known as bokeh is a key element in many photographs. As such i present a method which approximates this distortion in the pbtr-system
Fast ray-AABB Intersection test
EX 4.9: Here i implemented the fast-AABB test proposed by Eisemann 07 and analyse it’s impact on the performance of the pbrt-system.