Cosine transform based preconditioners for total variation deblurring.
other · Level V
Where this comes from
- Record sourced from PubMed, PMID 18267422.
- Also identified by DOI 10.1109/83.791976.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
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.