Improved measurement linearity and precision for AMCW time-of-flight range imaging cameras
Applied Optics, Vol. 49, Issue 23, pp. 4392-4403 (2010)
http://dx.doi.org/10.1364/AO.49.004392
Enhanced HTML 
Acrobat PDF (950 KB)
Abstract
Time-of-flight range imaging systems utilizing the amplitude modulated continuous wave (AMCW) technique often suffer from measurement nonlinearity due to the presence of aliased harmonics within the amplitude modulation signals. Typically a calibration is performed to correct these errors. We demonstrate an alternative phase encoding approach that attenuates the harmonics during the sampling process, thereby improving measurement linearity in the raw measurements. This mitigates the need to measure the system’s response or calibrate for environmental changes. In conjunction with improved linearity, we demonstrate that measurement precision can also be increased by reducing the duty cycle of the amplitude modulated illumination source (while maintaining overall illumination power).
© 2010 Optical Society of America
OCIS Codes
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.2920) Instrumentation, measurement, and metrology : Homodyning
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(150.5670) Machine vision : Range finding
(150.6910) Machine vision : Three-dimensional sensing
(280.3640) Remote sensing and sensors : Lidar
ToC Category:
Imaging Systems
History
Original Manuscript: March 11, 2010
Revised Manuscript: July 7, 2010
Manuscript Accepted: July 8, 2010
Published: August 5, 2010
Citation
Andrew D. Payne, Adrian A. Dorrington, Michael J. Cree, and Dale A. Carnegie, "Improved measurement linearity and precision for AMCW time-of-flight range imaging cameras," Appl. Opt. 49, 4392-4403 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-23-4392
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Axi-Vision Camera (Real-Time Distance-Mapping Camera) (AO)
- High-definition real-time depth-mapping TV camera: HDTV Axi-Vision Camera (OE)
- Gain-modulated Axi-Vision Camera (high speed high-accuracy depth-mapping camera) (OE)
- High-resolution, real-time 3D absolute coordinate measurement based on a phase-shifting method (OE)
- Role of optics in the accuracy of depth-from-defocus systems (JOSAA)
Related Conference Papers
- Large Area Pyroelectric Motion Tracking System
- Chirped AM Ladar for 3D Imaging and Range-Doppler Tracking at 1550 nm Wavelength: Update
- Photon Counting Chirped AM Ladar: Concept and Simulation Results
- Chirped AM Ladar for 3-D Imaging and Range-Doppler Tracking at 1550 nm Wavelength
- View Point Tracking for Autostereoscopic Displays Using a Low Cost 3D CMOS Imager
« Previous Article | Next Article »
OSA is a member of 