Heinrich Hey, Werner Purgathofer
Real-Time Rendering of Globally Illuminated Soft Glossy Scenes With Directional Light Maps
TR-186-2-02-05, March 2002 [paper]

Heinrich Hey, Werner Purgathofer
Advanced radiance Estimation for Photon Map Global Illumination
Computer Graphics Forum, 21(3), 2002.

Heinrich Hey, Peter Purgathofer
Importance sampling with hemispherical particle footprints
In Spring Conference on Computer Graphics 2002. 2002.

Heinrich Hey
Photorealistic and Hardware Accelerated Rendering of Complex Scenes
Supervisor: Werner Purgathofer
Duration: December 1998 - May 2002
[pdf]

Heinrich Hey, Werner Purgathofer
Global Illumination with Photon Map Compensation
TR-186-2-01-04, January 2001 [paper]

Heinrich Hey, Werner Purgathofer
Importance Sampling with Hemispherical Particle Footprints
TR-186-2-01-05, January 2001 [paper]

Heinrich Hey, Robert F. Tobler, Werner Purgathofer
Real-Time Occlusion Culling With A Lazy Occlusion Grid
TR-186-2-01-02, January 2001 [paper]

Werner Purgathofer, Heinrich Hey
Occlusion Culling Methods
State of the Art Report at Eurographics'01, Manchester, U.K., Sept. 2001

Werner Purgathofer, Heinrich Hey, Robert F. Tobler
Real-Time Occlusion Culling with a Lazy Occlusion Grid
In Rendering Techniques'01 (proceedings of Eurographics Workshop on Rendering 2001, June 2001), Springer-Verlag, Wien, 2001

Heinrich Hey, Robert F. Tobler, Werner Purgathofer
Lazy Occlusion Grid Culling
TR-186-2-99-12, March 1999 [paper]