Yilun Wang

Sparse Signal Reconstruction via Iterative Support Detection

  • Yilun Wang
  • Wotao Yin
    • Categories Applications - Science and Engineering, Convex Optimization, Nonsmooth Optimization Tags , , ,

    We present a novel sparse signal reconstruction method “ISD”, aiming to achieve fast reconstruction and a reduced requirement on the number of measurements compared to the classical l_1 minimization approach. ISD addresses failed reconstructions of l_1 minimization due to insufficient measurements. It estimates a support set I from a current reconstruction and obtains a new … Read more

    A Fast Algorithm For Image Deblurring with Total Variation Regularization

  • Yilun Wang
  • Wotao Yin
  • Yin Zhang
    • Categories Applications - Science and Engineering, Convex and Nonsmooth Optimization Tags , ,

    We propose and test a simple algorithmic framework for recovering images from blurry and noisy observations based on total variation (TV) regularization when a blurring point-spread function is given. Using a splitting technique, we construct an iterative procedure of alternately solving a pair of easy subproblems associated with an increasing sequence of penalty parameter values. … Read more