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:
Feb. 21, 2017
Filed:
Jul. 31, 2012
Lukas Gruber, Graz, AT;
Thomas Richter-trummer, Graz, AT;
Dieter Schmalstieg, Graz, AT;
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Photometric registration from an arbitrary geometry for augmented reality is performed using video frames of an environment captured by a camera. A surface reconstruction of the environment is generated. A pose is determined for the camera with respect to the environment, e.g., using model based tracking using the surface reconstruction. Illumination data for the environment is determined from a video frame. Estimated lighting conditions for the environment are generated based on the surface reconstruction and the illumination data. For example, the surface reconstruction may be used to compute the possible radiance transfer, which may be compressed, e.g., using spherical harmonic basis functions, and used in the lighting conditions estimation. A virtual object may then be rendered based on the lighting conditions. Differential rendering may be used with lighting solutions from the surface reconstruction of the environment and a second surface reconstruction of the environment combined with the virtual object.