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. 05, 2013
Filed:
Jul. 16, 2010
Ankit Mohan, Cambridge, MA (US);
Ramesh Raskar, Cambridge, MA (US);
Shinsaku Hiura, Hyogo, JP;
Quinn Smithwick, Cambridge, MA (US);
Grace Woo, Cambridge, MA (US);
Ankit Mohan, Cambridge, MA (US);
Ramesh Raskar, Cambridge, MA (US);
Shinsaku Hiura, Hyogo, JP;
Quinn Smithwick, Cambridge, MA (US);
Grace Woo, Cambridge, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
In an illustrative implementation of this invention, an optical pattern that encodes binary data is printed on a transparency. For example, the pattern may comprise data matrix codes. A lenslet is placed at a distance equal to its focal length from the optical pattern, and thus collimates light from the optical pattern. The collimated light travels to a conventional camera. For example, the camera may be meters distant. The camera takes a photograph of the optical pattern at a time that the camera is not focused on the scene that it is imaging, but instead is focused at infinity. Because the light is collimated, however, a focused image is captured at the camera's focal plane. The binary data in the pattern may include information regarding the object to which the optical pattern is affixed and information from which the camera's pose may be calculated.