Fabiana Zama

An algorithm for the choice of the regularization parameter in inverse problems in imaging

  • Elena Loli Piccolomini
  • Fabiana Zama
    • Categories Applications - Science and Engineering, Bound-constrained Optimization

    In this paper we present an iterative algorithm for the solution of regularization problems arising in inverse image processing. The regularization function to be minimized is constituted by two terms, a data fit function and a regularization function, weighted by a regularization parameter. The proposed algorithm solves the minimization problem and estimates the regularization parameter … Read more

    An Iterative algorithm for large size Least-Squares constrained regularization problems.

  • Elena Loli Piccolomini
  • Fabiana Zama
    • Categories Applications - Science and Engineering, Bound-constrained Optimization Tags , ,

    In this paper we propose an iterative algorithm to solve large size linear inverse ill posed problems. The regularization problem is formulated as a constrained optimization problem. The dual lagrangian problem is iteratively solved to compute an approximate solution. Before starting the iterations, the algorithm computes the necessary smoothing parameters and the error tolerances from … Read more