Click here to edit.
Research Interests
PhD Thesis
Title: Augmented Lagrangian Methods for Imaging Inverse Problems, Supervisor: Prof. Mário A. T. Figueiredo, January 2011
Papers in Journals
Papers in Conferences
Software
(C)SALSA : (Constrained) Split Augmented Lagrangian Shrinkage Algorithm
Blind Inpainting using L0+TV
- Inverse problems in imaging
- Statistical Inference
- Image restoration
- Compressed sensing
- Video surveillance
- Segmentation and tracking
- Statistical Learning
- Computer vision
- Deep Learning
PhD Thesis
Title: Augmented Lagrangian Methods for Imaging Inverse Problems, Supervisor: Prof. Mário A. T. Figueiredo, January 2011
Papers in Journals
- M. Afonso and J.M.R. Sanches, "Blind Inpainting using L0 and Total Variation Regularization," Image Processing, IEEE Transactions on , Vol. 24, No. 7, July 2015, doi: 10.1109/TIP.2015.2417505
- M. Afonso and J.M.R. Sanches, "A total variation recursive space-variant filter for image denoising," Digital Signal Processing, Volume 40, May 2015, Pages 101-116, http://dx.doi.org/10.1016/j.dsp.2015.02.002.
- M. Afonso and J.M.R. Sanches, "Image reconstruction under multiplicative speckle noise using total variation," Neurocomputing, Volume 150, Part A, 20 February 2015, Pages 200-213, http://dx.doi.org/10.1016/j.neucom.2014.08.073.
- M. Afonso, J. C. Nascimento, and J. S. Marques, "Automatic Estimation of Multiple Motion Fields From Video Sequences Using a Region Matching Based Approach," in IEEE Transactions on Multimedia, vol. 16, no. 1, pp. 1-14, Jan. 2014. doi:10.1109/TMM.2013.2281023
- M. Afonso, J. Bioucas-Dias, and M. Figueiredo, "An Augmented Lagrangian based Method for the Constrained Formulation of Imaging Inverse Problems", IEEE Transactions on Image Processing, Vol. 20, no. 3, pp 681 - 695, March, 2011.
- M. Afonso, J. Bioucas-Dias, and M. Figueiredo, "Fast image recovery using variable splitting and constrained optimization," IEEE Transactions on Image Processing, vol. 19, no. 9, pp. 2345-2356, September, 2010.
Papers in Conferences
- M. Afonso and J.M.R. Sanches, "Adaptive Order Non-Convex Lp-norm Regularization in Image Restoration", 3rd International Workshop on New Computational Methods for Inverse Problems (NCMIP), Cachan, France, May 2017.
- M. Afonso and J. C. Nascimento, "Predictive multiple motion fields for trajectory completion: Application to surveillance systems," Image Processing (ICIP), 2015 IEEE International Conference on, Quebec City, QC, 2015, pp. 2547-2551. doi: 10.1109/ICIP.2015.7351262
- M. Afonso and J.M.R. Sanches, Noise Decomposition Using Polynomial Approximation, 7th Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA 2015), Santiago de Compostela, Spain, June 17-19, 2015.
- M. Afonso and J.M.R. Sanches, Total Variation Denoising using a Recursive and Spatially Adaptive Filter, 19th edition of the Portuguese Conference on Pattern Recognition (RecPad 2013), Lisboa, Portugal, November 2013.
- M. Afonso and J.M.R. Sanches, "A Total Variation based Reconstruction Algorithm for 3D Ultrasound", Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA), Funchal, Madeira, Portugal, June 2013.
- M. Afonso, J. S. Marques, J. C. Nascimento, "Automatic Estimation of Multiple Motion Fields Using Object Trajectories and Optical Flow", International Conference on Pattern Recognition Applications and Methods (ICPRAM) 2012, Vilamoura, Algarve, Portugal.
- M. Afonso, J. Bioucas-Dias, M. Figueiredo, "Hybrid synthesis-analysis frame-based regularization: a criterion and an algorithm", Signal processing with adaptive sparse structured representations - SPARS11, Edinburgh, Scotland, UK, 2011.
- M. Afonso, J. Bioucas-Dias, and M. Figueiredo, "Non-cyclic Deconvolution Using an Augmented Lagrangian Method", EUROCON'2011 / ConfTele'2011, Lisboa, Portugal, 2011.
- M. Afonso, J. Bioucas-Dias, and M. Figueiredo, "An augmented Lagrangian approach to linear inverse problems with compound regularization", IEEE International Conference on Image Processing ICIP'2010, Hong Kong, China, 2010.
- M. Afonso, J. Bioucas-Dias, and M. Figueiredo, "A Fast Algorithm for the Constrained Formulation of Compressive Image Reconstruction and Other Linear Inverse Problems", IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Dallas, U.S.A., 2010.
- M. Figueiredo, J. Bioucas-Dias, and M. Afonso, "Fast Frame-Based Image Deconvolution Using Variable Splitting and Constrained Optimization", IEEE Worskhop on Statistical Signal Processing, Cardiff, Wales, 2009.
- M. Afonso, J. Bioucas-Dias, and M. Figueiredo, "Image Denoising with Compound Regularization Using a Bregman Iterative Algorithm", Conference on Telecommunications (ConfTele'09), Santa Maria de Feira, Portugal, 2009.
- M. Afonso, J. Bioucas-Dias, and M. Figueiredo, "A Bregman iterative approach to linear inverse problems with compound regularizers", Workshop on Signal Processing with Adaptive Sparse Structured Representations SPARS'09, Saint-Malo, France, 2009.
- M. Afonso, and S.D. Joshi, "Image De-Noising by Estimating Finest Scale Wavelet Coefficients", National Conference on Communication (NCC 2006), New Delhi, India, 2006.
- M. Afonso, and S.D. Joshi, "A Wavelet Based Scheme for Adaptive Noise Canceling from Images", General Assembly of the International Union of Radio Science (URSIGA), NewDelhi, India, 2005.
Software
(C)SALSA : (Constrained) Split Augmented Lagrangian Shrinkage Algorithm
Blind Inpainting using L0+TV