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:
Dec. 30, 1997
Filed:
Jul. 20, 1995
Applicant:
Inventors:
Douglas Voorhies, Menlo Park, CA (US);
James Foran, Milpitas, CA (US);
Assignee:
Silicon Graphics, Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06T / ;
U.S. Cl.
CPC ...
395126 ;
Abstract
An apparatus for generating a reflection from a three-dimensional environment map. The apparatus includes a reflection vector generator which receives an eye vector and a normal vector neither of which need be normalized. This reflection vector generator generates a reflection vector without vector normalization. The reflection vector generator then couples to a decoder to supply the generated reflection vector. The decoder, in turn, determines a location where the reflection vector indexes the selected 2-dimensional map which forms part of the environment map.