A local update strategy for iterative reconstruction from projections

  title={A local update strategy for iterative reconstruction from projections},
  author={Ken D. Sauer and Charles A. Bouman},
  journal={IEEE Trans. Signal Processing},
1 Iterative methods for statistically-based reconstruction from projections are computationally costly relative to convolution backprojection, but allow useful image reconstruction from sparse and noisy data. We present a method for Bayesian reconstruction which relies on updates of single pixel values, rather than the entire image, at each iteration. The technique is similar to GaussSeidel (GS) iteration for the solution of differential equations on finite grids. The computational cost per… CONTINUE READING
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