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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.:

US 9753128 B1

PDFFull Text
Date of Patent:
Sep. 05, 2017

Filed:

Jul. 25, 2011

Multi-path compensation using multiple modulation frequencies in time of flight sensor

Applicants:

Matthias Schweizer, Lenzburg, CH;

Thierry Oggier, Zurich, CH;

Bernhard Buettgen, Adliswil, CH;

Inventors:

Matthias Schweizer, Lenzburg, CH;

Thierry Oggier, Zurich, CH;

Bernhard Buettgen, Adliswil, CH;

Assignee:

Heptagon Micro Optics Pte. Ltd., Singapore, SG;

Attorney:

Fish & Richardson P.C.

Primary Examiner:

Joseph Ustaris

Assistant Examiner:

Rebecca Volentine

Int. Cl.
CPC ...
G01C 3/00 (2006.01); G01S 13/08 (2006.01); G01C 3/08 (2006.01); G01S 7/491 (2006.01); G01S 17/36 (2006.01); H04N 13/02 (2006.01); G01S 17/89 (2006.01);
U.S. Cl.
CPC ...
G01S 7/4912 (2013.01); G01S 17/36 (2013.01); G01S 17/89 (2013.01); H04N 13/0207 (2013.01);
Abstract

A method to compensate for multi-path in time-of-flight (TOF) three dimensional (3D) cameras applies different modulation frequencies in order to calculate/estimate the error vector. Multi-path in 3D TOF cameras might be caused by one of the two following sources: stray light artifacts in the TOF camera systems and multiple reflections in the scene. The proposed method compensates for the errors caused by both sources by implementing multiple modulation frequencies.

Find Patent Forward Citations

Schweizer, Matthias. (2017). Multi-path compensation using multiple modulation frequencies in time of flight sensor (U.S. Patent No. 9753128). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9753128

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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