Abstract: Provided are systems and methods that address the problem of single scattering in homogeneous volumes. In one implementation, an importance sampling technique is provided that avoids a singularity near point light sources. The system and method can be extended to the situation of area lights of arbitrary shapes. The error caused by the non-constant distance to the finite-extent area light is distributed by using random sample points within the area light as points from which lighting is calculated for sampling points along the ray.
Type:
Grant
Filed:
February 17, 2012
Date of Patent:
February 16, 2016
Assignees:
Sony Corporation, Sony Pictures Technologies, Inc., SOLID ANGLE SL
Inventors:
Christopher Kulla, Marcos Fajardo Orellano
Abstract: Provided are systems and methods that address the problem of single scattering in homogeneous volumes. In one implementation, an importance sampling technique is provided that avoids a singularity near point light sources. The system and method can be extended to the situation of area lights of arbitrary shapes. The error caused by the non-constant distance to the finite-extent area light is distributed by using random sample points within the area light as points from which lighting is calculated for sampling points along the ray.
Type:
Application
Filed:
February 17, 2012
Publication date:
October 11, 2012
Applicants:
SONY CORPORATION, Solid Angle SL, SONY PICTURES TECHNOLOGIES INC.
Inventors:
Christopher Kulla, Marcos Fajardo Orellana
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