Title :
A fast and accurate first-order algorithm for compressed sensing
Author :
Bobin, J. ; Candés, E.J.
Author_Institution :
Appl. & Comput. Math., California Inst. of Technol., Pasadena, CA, USA
Abstract :
This paper introduces a new, fast and accurate algorithm for solving problems in the area of compressed sensing, and more generally, in the area of signal and image reconstruction from indirect measurements. This algorithm is inspired by recent progress in the development of novel first-order methods in convex optimization, most notably Nesterov´s smoothing technique. In particular, there is a crucial property that makes these methods extremely efficient for solving compressed sensing problems. Numerical experiments show the promising performance of our method to solve problems which involve the recovery of signals spanning a large dynamic range.
Keywords :
image reconstruction; image sampling; optimisation; Nesterovs smoothing technique; accurate algorithm; compressed sensing; convex optimization; dynamic range signals spanning; fast algorithm; first order algorithm; image reconstruction; Analog-digital conversion; Area measurement; Compressed sensing; Dynamic range; Image reconstruction; Mathematics; Optimization methods; Sampling methods; Signal design; Smoothing methods; ℓ1 and total-variation minimization; Compressed sensing; smoothing technique in optimization; sparsity;
Conference_Titel :
Image Processing (ICIP), 2009 16th IEEE International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-5653-6
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2009.5414554