COMBINING SAMPLING ARRANGEMENTS AND DISTRIBUTIONS FOR STOCHASTIC INTEGRATION IN RENDERING

摘要

Systems, methods and articles of manufacture for sampling visual characteristics of a three-dimensional scene. Embodiments include collecting a plurality of samples within the three-dimensional scene. Upon determining that a combined stratified importance sampling algorithm will result in reduced error for a rendered image of the three-dimensional scene, embodiments collect the plurality of samples using the combined stratified importance sampling algorithm, and otherwise the plurality of samples are collected using a stratified sampling algorithm. The combined stratified importance sampling algorithm integrates an antithetic sampling algorithm. One or more lighting effects for the three-dimensional scene are simulated based on the plurality of samples and data describing one or more light sources for the three-dimensional scene. Embodiments further include rendering the image based on the simulated one or more lighting effects and data describing characteristics of the three-dimensional scene.

主权项

1. A method of sampling visual characteristics of a three-dimensional scene, comprising:
collecting a plurality of samples within the three-dimensional scene, comprising:
upon determining that a combined stratified importance sampling algorithm will result in reduced error for a rendered image of the three-dimensional scene, collecting the plurality of samples using the combined stratified importance sampling algorithm, wherein the combined stratified importance sampling algorithm integrates an antithetic sampling algorithm; andotherwise, collecting the plurality of samples using a stratified sampling algorithm; simulating one or more lighting effects for the three-dimensional scene, based on the plurality of samples and data describing one or more light sources for the three-dimensional scene; and rendering, by operation of one or more computer processors, the image based on the simulated one or more lighting effects and data describing characteristics of the three-dimensional scene.