Title
Deconvolution using projections onto the epigraph set of a convex cost function
Abstract
A new deconvolution algorithm based on making orthogonal projections onto the epigraph set of a convex cost function is presented. In this algorithm, the dimension of the minimization problem is lifted by one and sets corresponding to the cost function and observations are defined. If the utilized cost function is convex in RN, the corresponding epigraph set is also convex in RN+1. The deconvolution algorithm starts with an arbitrary initial estimate in RN+1. At each iteration cycle of the algorithm, first deconvolution projections are performed onto the hyperplanes representing observations, then an orthogonal projection is performed onto epigraph of the cost function. The method provides globally optimal solutions for total variation, l1, l2, and entropic cost functions.
Year
DOI
Venue
2014
10.1109/SIU.2014.6830560
Signal Processing and Communications Applications Conference
Keywords
DocType
Volume
costing,deconvolution,entropy,iterative methods,minimisation,set theory,convex cost function,deconvolution algorithm,deconvolution projections,entropic cost function,epigraph set,hyperplanes,iteration cycle,l1 cost function,l2 cost function,minimization problem,orthogonal projections,total variation cost function,Epigraph of a cost function,deconvolution,projection onto convex sets,total variation
Journal
abs/1402.5818
ISSN
Citations 
PageRank 
2165-0608
0
0.34
References 
Authors
6
4
Name
Order
Citations
PageRank
Mohammad Tofighi1658.74
Alican Bozkurt2114.39
Kivanç Köse3759.55
A. Enis Çetin4871118.56