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:
May. 10, 2011
Filed:
Jun. 29, 2007
Kun Zhou, Beijing, CN;
Qiming Hou, Hebei, CN;
Minmin Gong, Beijing, CN;
John Michael Snyder, Redmond, WA (US);
Baining Guo, Beijing, CN;
Heung-yeung Shum, Beijing, CN;
Kun Zhou, Beijing, CN;
Qiming Hou, Hebei, CN;
Minmin Gong, Beijing, CN;
John Michael Snyder, Redmond, WA (US);
Baining Guo, Beijing, CN;
Heung-Yeung Shum, Beijing, CN;
Microsoft Corporation, Redmond, WA (US);
Abstract
A real-time algorithm for rendering of an inhomogeneous scattering medium such as fog with a surface object immersed therein is described. An input media animation is represented as a sequence of density fields. The algorithm computes surface reflectance of the surface object in the inhomogeneous scattering medium. The algorithm may also compute airlight of the inhomogeneous scattering medium. Several approximations are taken which lead to analytical solutions of quantities such as optical depth integrations and single scattering integrations, and a reduced number of integrations that need to be calculated. The resultant algorithm is able to render inhomogeneous media including their shadowing and scattering effects in real time. The algorithm may be adopted for a variety of light sources including point lights and environmental lights.