Cosine transform based preconditioned for total variation deblurring

Raymond H. Chan*, Tony F. Chan, Chiu Kwong Wong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

In PDE image restoration problems, one has to invert operators which is a sum of a blurring operator and an elliptic operator with highly varying coefficient. We present a preconditioner for such operators, which can be used with the conjugate gradient (CG) method, and compare it with Vogel and Oman's product preconditioner.

Original languageEnglish (US)
Pages (from-to)1472-1478
Number of pages7
JournalIEEE Transactions on Image Processing
Volume8
Issue number10
DOIs
StatePublished - Oct 1 1999
Externally publishedYes

Keywords

  • Image deblurring
  • Preconditioned conjugate gradient method
  • Total variation

ASJC Scopus subject areas

  • Software
  • Computer Graphics and Computer-Aided Design

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