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A multigrid-based preconditioned solver for the Helmholtz equation with a discretization by 25-point difference scheme.

Dongsheng ChengZhiyong LiuTingting Wu
Published in: Math. Comput. Simul. (2015)
Keyphrases
  • numerical methods
  • multiscale
  • image analysis
  • computationally expensive
  • preprocessing
  • conjugate gradient algorithm
  • objective function
  • multiresolution
  • active contours
  • boundary conditions
  • continuous attributes