Now showing items 1-2 of 2

  • Coherent multiscale image processing using quaternion wavelets 

    Chan, Wai Lam (2006)
    This thesis develops a quaternion wavelet transform (QWT) as a new multiscale analysis tool for geometric image features. The QWT is a near shift-invariant tight frame representation whose coefficients sport a magnitude ...
  • Terahertz imaging with compressive sensing 

    Chan, Wai Lam (2010)
    Most existing terahertz imaging systems are generally limited by slow image acquisition due to mechanical raster scanning. Other systems using focal plane detector arrays can acquire images in real time, but are either too ...