Title
Efficient minimization method for a generalized total variation functional
Date Issued
01 January 2009
Access level
open access
Resource Type
journal article
Author(s)
Abstract
Replacing the ℓ2 data fidelity term of the standard Total Variation (TV) functional with an ℓ1 data fidelity term has been found to offer a number of theoretical and practical benefits. Efficient algorithms for minimizing this ℓ1-TV functional have only recently begun to be developed, the fastest of which exploit graph representations, and are restricted to the denoising problem. We describe an alternative approach that minimizes a generalized TV functional, including both ℓ2-TV and ℓM1 -TV as special cases, and is capable of solving more general inverse problems than denoising (e.g., deconvolution). This algorithm is competitive with the graph-based methods in the denoising case, and is the fastest algorithm of which we are aware for general inverse problems involving a nontrivial forward linear operator. © 2009 IEEE.
Start page
322
End page
332
Volume
18
Issue
2
Language
English
OCDE Knowledge area
Otras ingenierías y tecnologías
Subjects
Scopus EID
2-s2.0-59649097565
PubMed ID
Source
IEEE Transactions on Image Processing
ISSN of the container
10577149
Sponsor(s)
Manuscript received September 06, 2007; revised September 29, 2008. First published December 22, 2008; current version published January 09, 2009. This work was supported by the auspices of the National Nuclear Security Administration of the U.S. Department of Energy at Los Alamos National Laboratory under Contract DE-AC52-06NA25396 and was supported in part by the NNSA’s Laboratory Directed Research and Development Program. The associate editor coordinating the review of this manuscript and approving it for publication was Prof. Stanley J. Reeves.
Sources of information:
Directorio de Producción Científica
Scopus