Advanced Computer Graphics

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Classnotes for CMSC740 taught by Matthias Zwicker

Acceleration

How to speed up intersection calculations during ray tracing.

Object Subdivision

Bounding volume hierarchy

  • Create a tree where objects are placed together.
  • Each node corresponds to a region covering all the objects it has
  • You want to insert in some greedy way:
    • Minimize the size of each region
  • Subtrees may overlap and are unorder

Spacial Subdivision

Octtree, kd tree

Radiometry

Geometrical Optics

Wikipedia: Geometrical Optics

  • Light are rays which reflect, refract, and scatter

Solid Angle

  • Solid angle = area / radius^2 on a sphere

BRDF, Reflection Integral

Monte Carlo Integration

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