Invention Grant
- Patent Title: Multi-path compensation using multiple modulation frequencies in time of flight sensor
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Application No.: US13189903Application Date: 2011-07-25
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Publication No.: US09753128B2Publication Date: 2017-09-05
- Inventor: Matthias Schweizer , Thierry Oggier , Bernhard Buettgen
- Applicant: Matthias Schweizer , Thierry Oggier , Bernhard Buettgen
- Applicant Address: SG Singapore
- Assignee: Heptagon Micro Optics Pte. Ltd.
- Current Assignee: Heptagon Micro Optics Pte. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Fish & Richardson P.C.
- Main IPC: G01C3/00
- IPC: G01C3/00 ; G01S13/08 ; G01C3/08 ; G01S7/491 ; G01S17/36 ; H04N13/02 ; G01S17/89

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.
Public/Granted literature
- US20120033045A1 Multi-Path Compensation Using Multiple Modulation Frequencies in Time of Flight Sensor Public/Granted day:2012-02-09
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