Now showing items 1-5 of 70

  • Achieving sub-millimetre precision with a solid-state full-field heterodyning range imaging camera

    Dorrington, Adrian A.; Cree, Michael J.; Payne, Andrew D.; Conroy, Richard M.; Carnegie, Dale A. (Institute of Physics Publishing, 2007)
    We have developed a full-field solid-state range imaging system capable of capturing range and intensity data simultaneously for every pixel in a scene with sub-millimetre range precision. The system is based on indirect ...
  • Advantages of 3D time-of-flight range imaging cameras in machine vision applications

    Dorrington, Adrian A.; Kelly, Cameron B.D.; McClure, Shane H.; Payne, Andrew D.; Cree, Michael J. (Electronics Research, 2009)
    Machine vision using image processing of traditional intensity images is in wide spread use. In many situations environmental conditions or object colours or shades cannot be controlled, leading to difficulties in correctly ...
  • Analysis of binning of normals for spherical harmonic cross-correlation

    Larkins, Robert L.; Cree, Michael J.; Dorrington, Adrian A. (Society of Photo-Optical Instrumentation Engineers, 2012)
    Spherical harmonic cross-correlation is a robust registration technique that uses the normals of two overlapping point clouds to bring them into coarse rotational alignment. This registration technique however has a high ...
  • Analysis of ICP variants for the registration of partially overlapping time-of-flight range images

    Larkins, Robert L.; Cree, Michael J.; Dorrington, Adrian A. (IEEE, 2010)
    The iterative closest point (ICP) algorithm is one of the most commonly used methods for registering partially overlapping range images. Nevertheless, this algorithm was not originally designed for this task, and many ...
  • Analysis of the SoftKinetic DepthSense for Range Imaging

    Cree, Michael J.; Streeter, Lee V.; Conroy, Richard M.; Dorrington, Adrian A. (Springer, 2013)
    We analyse the SoftKinetic DepthSense 325 range imaging camera for precision and accuracy in ranging out to 3 m. Flat planar targets (one a grey board, the other made from retroreflective material) are imaged at a variety ...

Showing up to 5 theses - most recently added to Research Commons first.

  • Resolving Measurement Errors Inherent with Time-of-Flight Range Imaging Cameras

    Whyte, Refael Zabdi (University of Waikato, 2015)
    Range imaging cameras measure the distance to objects in the field-of-view (FoV) of the camera, these cameras enable new machine vision applications in robotics, manufacturing, and human computer interaction. Time-of-flight ...
  • Analysing and Enhancing the Coarse Registration Pipeline

    Larkins, Robert L. (University of Waikato, 2015)
    The current and continual development of sensors and imaging systems capable of acquiring three-dimensional data provides a novel form in which the world can be expressed and examined. The acquisition process, however, is ...
  • Assessment of Standing Herbage Dry Matter Using A Range Imaging Sytem

    Benseman, Mark (University of Waikato, 2013)
    It has been known for a long time that a device that could quickly and accurately ascertain dry matter content would be very useful to pastoral farmers. Despite many years of various products being developed there is still ...
  • Computing the fast Fourier transform on SIMD microprocessors

    Blake, Anthony Martin (University of Waikato, 2012)
    This thesis describes how to compute the fast Fourier transform (FFT) of a power-of-two length signal on single-instruction, multiple-data (SIMD) microprocessors faster than or very close to the speed of state of the art ...
  • Ameliorating Systematic Errors in Full-Field AMCW Lidar

    Godbaz, John Peter (University of Waikato, 2012)
    This thesis presents an analysis of systematic error in full-field amplitude modulated continuous wave range-imaging systems. The primary focus is on the mixed pixel/multipath interference problem, with digressions into ...

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