Alvaro R. De Pierro

Publication Activity (10 Years)

Years Active: 1990-2019
Publications (10 Years): 5

Top Topics

Maximum Likelihood

Tomographic Image Reconstruction

Gradient Method

Top Venues

J. Optim. Theory Appl.

Multidimens. Syst. Signal Process.

Publications

Daniel Reem, Simeon Reich, Alvaro R. De Pierro
A Telescopic Bregmanian Proximal Gradient Method Without the Global Lipschitz Continuity Assumption. J. Optim. Theory Appl. 182 (3) (2019)
Daniel Reem, Simeon Reich, Alvaro R. De Pierro
Re-examination of Bregman functions and new properties of their divergences. CoRR (2018)
Daniel Reem, Simeon Reich, Alvaro R. De Pierro
BISTA: a Bregmanian proximal gradient method without the global Lipschitz continuity assumption. CoRR (2018)
Marcelo V. W. Zibetti, Alvaro R. De Pierro
Improving compressive sensing in MRI with separate magnitude and phase priors. Multidimens. Syst. Signal Process. 28 (4) (2017)
Marcelo Victor Wüst Zibetti, Daniel R. Pipa, Alvaro R. De Pierro
Fast and exact unidimensional L2-L1 optimization as an accelerator for iterative reconstruction algorithms. Digit. Signal Process. 48 (2016)
Daniel Reem, Alvaro R. De Pierro
A new convergence analysis and perturbation resilience of some accelerated proximal forward-backward algorithms with errors. CoRR (2015)
Marcelo Victor Wüst Zibetti, Elias S. Helou, Eduardo X. Miqueles, Alvaro R. De Pierro
Accelerating the over-relaxed iterative shrinkage-thresholding algorithms with fast and exact line search for high resolution tomographic image reconstruction. ICIP (2015)
Elias Salomão Helou Neto, Yair Censor, T.-B. Chen, I.-L. Chern, Alvaro R. De Pierro, Ming Jiang, H. H.-S. Lu
String-Averaging Expectation-Maximization for Maximum Likelihood Estimation in Emission Tomography. CoRR (2014)
Eduardo X. Miqueles, Alvaro R. De Pierro
C-library raft: Reconstruction algorithms for tomography. Applications to X-ray fluorescence tomography. Comput. Phys. Commun. 182 (12) (2011)
Eduardo X. Miqueles, Alvaro R. De Pierro
Iterative Reconstruction in X-ray Fluorescence Tomography Based on Radon Inversion. IEEE Trans. Medical Imaging 30 (2) (2011)
Ana Gabriela Martínez, Alvaro R. De Pierro
Iterative methods based on spline approximations to detect discontinuities from Fourier data. J. Comput. Appl. Math. 234 (12) (2010)
Marcelo Victor Wüst Zibetti, Alvaro R. De Pierro
Separate magnitude and phase regularization in MRI with incomplete data: preliminary results. ISBI (2010)
Eduardo X. Miqueles, Alvaro R. De Pierro
Xfct inversion by generalized ridge functions. ISBI (2010)
Alvaro R. De Pierro, Elias Salomão Helou Neto
From convex feasibility to convex constrained optimization using block action projection methods and underrelaxation. Int. Trans. Oper. Res. 16 (4) (2009)
Marcelo Victor Wüst Zibetti, Alvaro R. De Pierro
A New Distortion Model for Strong Inhomogeneity Problems in Echo-Planar MRI. IEEE Trans. Medical Imaging 28 (11) (2009)
Hugo D. Scolnik, Alvaro R. De Pierro, Nélida E. Echebest, Maria T. Guardarucci
Preface. Int. Trans. Oper. Res. 16 (4) (2009)
Elias Salomão Helou Neto, Alvaro R. De Pierro
Incremental Subgradients for Constrained Convex Optimization: A Unified Framework and New Methods. SIAM J. Optim. 20 (3) (2009)
Eduardo X. Miqueles, Alvaro R. De Pierro
Fluorescence tomography: Reconstruction by iterative methods. ISBI (2008)
Ana Gabriela Martínez, Alvaro R. De Pierro
Approximating Functions From Sampled Fourier Data Using Spline Pseudofilters. IEEE Trans. Signal Process. 56 (4) (2008)
Musheng Wei, Alvaro R. De Pierro, Jiahong Yin
Iterative methods based on polynomial interpolation filters to detect discontinuities and recover point values from Fourier data. IEEE Trans. Signal Process. 53 (1) (2005)
Alvaro R. De Pierro, Fabiana Crepaldi
Simultaneous activity attenuation reconstruction in positron emission tomography via maximum likelihood and iterative methods. ICIP (3) (2005)
Elias Salomão Helou Neto, Alvaro R. De Pierro
On the Effect of Relaxation in the Convergence and Quality of Statistical Image Reconstruction for Emission Tomography Using Block-Iterative Algorithms. SIBGRAPI (2005)
Musheng Wei, Alvaro R. De Pierro, Jiahong Yin
Error Estimates for Two Filters Based on Polynomial Interpolation for Recovering a Function from Its Fourier Coefficients. Numer. Algorithms 35 (2-4) (2004)
Alvaro R. De Pierro, Michel E. B. Yamagishi
Fast EM-like Methods for Maximum 'A Posteriori' Estimates in Emission Tomography. IEEE Trans. Medical Imaging 20 (4) (2001)
Musheng Wei, Alvaro R. De Pierro
Upper Perturbation Bounds of Weighted Projections, Weighted and Constrained Least Squares Problems. SIAM J. Matrix Anal. Appl. 21 (3) (2000)
Jiahong Yin, Alvaro R. De Pierro, Musheng Wei
Reconstruction of a compactly supported function from the discrete sampling of its Fourier transform. IEEE Trans. Signal Process. 47 (12) (1999)
Jolyon A. Browne, Alvaro R. De Pierro
A row-action alternative to the EM algorithm for maximizing likelihood in emission tomography. IEEE Trans. Medical Imaging 15 (5) (1996)
Alvaro R. De Pierro
On the convergence of an EM-type algorithm for penalized likelihood estimation in emission tomography. IEEE Trans. Medical Imaging 14 (4) (1995)
Alvaro R. De Pierro
A modified expectation maximization algorithm for penalized likelihood estimation in emission tomography. IEEE Trans. Medical Imaging 14 (1) (1995)
Alvaro R. De Pierro, Alfredo N. Iusem
Convergence Properties of Iterative Methods for Symmetric Positive Semidefinite Linear Complementarity Problems. Math. Oper. Res. 18 (2) (1993)
Gabor T. Herman, Alvaro R. De Pierro, Neville Gai
On methods for maximum a posteriori image reconstruction with a normal prior. J. Vis. Commun. Image Represent. 3 (4) (1992)
Alfredo N. Iusem, Alvaro R. De Pierro
On the convergence of Han's method for convex programming with quadratic objective. Math. Program. 52 (1991)
Alfredo N. Iusem, Alvaro R. De Pierro
On the Convergence Properties of Hildreth's Quadratic Programming Algorithm. Math. Program. 47 (1990)