The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2016
Filed:
Mar. 15, 2013
Wojciech Jarosz, Zurich, CH;
Johannes Meng, Zurich, CH;
Marios Papas, Zurich, CH;
Ralf Habel, Zurich, CH;
Carsten Dachsbacher, Karlsruhe, DE;
Steve Marschner, Ithaca, NY (US);
Wojciech Jarosz, Zurich, CH;
Johannes Meng, Zurich, CH;
Marios Papas, Zurich, CH;
Ralf Habel, Zurich, CH;
Carsten Dachsbacher, Karlsruhe, DE;
Steve Marschner, Ithaca, NY (US);
Disney Enterprises, Inc., Burbank, CA (US);
Abstract
The disclosure provides an approach for rendering granular media. According to one aspect of the disclosure, granular media are rendered using bidirectional point scattering distribution functions (BPSDFs). The dimensionality of BPSDFs may be reduced by making certain assumptions, such as random orientations of grains, thereby simplifying light transport for computational efficiency. To generate a BPSDF from a grain, light transport may be precomputed using a Monte Carlo simulation in which photons are shot onto the grain from all directions. The precomputed BPSDF may be used, during rendering, for describing the interactions within grains. When a light ray traced during rendering intersects proxy geometry which replaces grain geometry, the BPSDF may be evaluated to determine light transport. By repeating this process for many light rays in a Monte Carlo simulation, the light propagation through the granular medium may be determined.