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. 31, 2011
Filed:
Mar. 26, 2007
Daniel Lehenbauer, Redmond, WA (US);
J. Jordan C. Parker, Redmond, WA (US);
Adam Smith, Sammamish, WA (US);
Alexander Stevenson, Bellevue, WA (US);
Daniel N. Wood, Seattle, WA (US);
Daniel Lehenbauer, Redmond, WA (US);
J. Jordan C. Parker, Redmond, WA (US);
Adam Smith, Sammamish, WA (US);
Alexander Stevenson, Bellevue, WA (US);
Daniel N. Wood, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A lighting model specified in light space may be transformed to a 3D scene, which may include numerous lights. When the lighting model is transformed to the 3D scene and is uniformly scaled or near-uniformly scaled, intensity or brightness of light at sample points, corresponding to points in the 3D scene, may be adjusted proportionately for a light source using a value based, at least partly, on a transform matrix. When the lighting model in the light space is scaled to non-uniformly stretch a lit area, the sample points may be transformed to the light space, using an inverse of a transform matrix. Distances from the light source to the transformed sample points in the light space may be used to determine attenuation and range with respect to the light source.