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» Efficient Shadows for Sampled Environment Maps
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CGF
2004
158views more  CGF 2004»
13 years 4 months ago
Combined Correlated and Importance Sampling in Direct Light Source Computation and Environment Mapping
This paper presents a general variance reduction method that is a quasi-optimal combination of correlated and importance sampling. The weights of the combination are selected auto...
László Szécsi, Mateu Sbert, L...
VMV
2000
146views Visualization» more  VMV 2000»
13 years 6 months ago
Efficient Importance Sampling Techniques for the Photon Map
In global illumination computations the photon map is a powerful tool for approximating the irradiance, which is stored independent from scene geometry. By presenting a new algori...
Alexander Keller, Ingo Wald
TOG
2002
160views more  TOG 2002»
13 years 4 months ago
Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments
We present a new, real-time method for rendering diffuse and glossy objects in low-frequency lighting environments that captures soft shadows, interreflections, and caustics. As a...
Peter-Pike J. Sloan, Jan Kautz, John Snyder
CGF
2008
124views more  CGF 2008»
13 years 4 months ago
Fast Soft Self-Shadowing on Dynamic Height Fields
We present a new, real-time method for rendering soft shadows from large light sources or lighting environments on dynamic height fields. The method first computes a horizon map f...
John Snyder, Derek Nowrouzezahrai
ACIVS
2006
Springer
13 years 10 months ago
Visibility of Point Clouds and Mapping of Unknown Environments
Abstract. We present an algorithm for interpolating the visible portions of a point cloud that are sampled from opaque objects in the environment. Our algorithm projects point clou...
Yanina Landa, Richard Tsai, Li-Tien Cheng