Research Commons
      • Browse 
        • Communities & Collections
        • Titles
        • Authors
        • By Issue Date
        • Subjects
        • Types
        • Series
      • Help 
        • About
        • Collection Policy
        • OA Mandate Guidelines
        • Guidelines FAQ
        • Contact Us
      • My Account 
        • Sign In
        • Register
      View Item 
      •   Research Commons
      • University of Waikato Research
      • Science and Engineering
      • Science and Engineering Papers
      • View Item
      •   Research Commons
      • University of Waikato Research
      • Science and Engineering
      • Science and Engineering Papers
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Undue influence: Mitigating range-intensity coupling in AMCW ‘flash’ lidar using scene texture

      Godbaz, John Peter; Cree, Michael J.; Dorrington, Adrian A.
      Thumbnail
      Files
      Undue Influence Mitigating Range-Intensity Coupling.pdf
      991.4Kb
      DOI
       10.1109/IVCNZ.2009.5378390
      Find in your library  
      Citation
      Export citation
      Godbaz, J.P., Cree, M.J. & Dorrington, A.A. (2009). Undue influence: Mitigating range-intensity coupling in AMCW ‘flash’ lidar using scene texture. In proceedings of 24th International Conference Image and Vision Computing New Zealand (IVCNZ 2009), 23-25 November 2009, Wellington, New Zealand. (pp. 304-309). Washington, USA: IEEE.
      Permanent Research Commons link: https://hdl.handle.net/10289/3874
      Abstract
      We present a new algorithm for mitigating range-intensity coupling caused by scattered light in full-field amplitude modulated continuous wave lidar systems using scene texture. Full-field Lidar works using the time-of-flight principle to measure the range to thousands of points in a scene simultaneously. Mixed pixel are erroneous range measurements caused by pixels integrating light from more than one object at a time. Conventional optics suffer from internal reflections and light scattering which can result in every pixel being mixed with scattered light. This causes erroneous range measurements and range-intensity coupling. By measuring how range changes with intensity over local regions it is possible to determine the phase and intensity of the scattered light without the complex calibration inherent in deconvolution based restoration. The new method is shown to produce a substantial improvement in range image quality. An additional range from texture method is demonstrated which is resistant to scattered light. Variations of the algorithms are tested with and without segmentation - the variant without segmentation is faster, but causes erroneous ranges around the edges of objects which are not present in the segmented algorithm.
      Date
      2009
      Type
      Conference Contribution
      Publisher
      IEEE
      Rights
      © 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
      Collections
      • Science and Engineering Papers [3142]
      Show full item record  

      Usage

      Downloads, last 12 months
      114
       
       
       

      Usage Statistics

      For this itemFor all of Research Commons

      The University of Waikato - Te Whare Wānanga o WaikatoFeedback and RequestsCopyright and Legal Statement