Publications

Preprints of publications not yet linked or listed can be requested by e-mail.

Publications in Google scholar (with citations and cross-references) University database (TUT Portfolio | TUT Bibliography)

2012

A. Foi and G. Boracchi, “Foveated self-similarity in nonlocal image filtering”, Proc. SPIE Electronic Imaging 2012, Human Vision and Electronic Imaging XVII, 8291-32, Burlingame (CA), USA, January 2012.

M. Maggioni and A. Foi, “Nonlocal transform-domain denoising of volumetric data with groupwise adaptive variance estimation”, Proc. SPIE Electronic Imaging 2012, Computational Imaging X, 8296-22, Burlingame (CA), USA, January 2012.

G. Boracchi and A. Foi, “Modeling the Performance of Image Restoration from Motion Blur”, submitted to IEEE Trans. Image Process., preprint.

2011

M. Mäkitalo and A. Foi, “Optimal inversion of the generalized Anscombe transformation for Poisson-Gaussian noise”, submitted to IEEE Trans. Image Process., preprint, September 2011.

M. Maggioni, V. Katkovnik, K. Egiazarian, and A. Foi, “A Nonlocal Transform-Domain Filter for Volumetric Data Denoising and Reconstruction”, submitted to IEEE Trans. Image Process., preprint, December 2011.

A. Foi, “Noise Estimation and Removal in MR Imaging: the Variance-Stabilization Approach”, Proc. 2011 IEEE International Symposium on Biomedical Imaging, ISBI 2011, pp. 1809-1814, Chicago (IL), USA, April 2011.  doi:10.1109/ISBI.2011.5872758

M. Mäkitalo and A. Foi, “A closed-form approximation of the exact unbiased inverse of the Anscombe variance-stabilizing transformation”, IEEE Trans. Image Process., vol. 20, no. 9, pp. 2697-2698, September 2011.  doi:10.1109/TIP.2011.2121085

G. Boracchi and A. Foi, “Uniform motion blur in Poissonian noise: blur/noise trade-off”, IEEE Trans. Image Process., vol. 20, no. 2, pp. 592-598, February 2011.  doi:10.1109/TIP.2010.2062196 raw images (86-Mb zip file)

M. Maggioni, G. Boracchi, A. Foi, and K. Egiazarian, “Video Denoising, Deblocking and Enhancement Through Separable 4-D Nonlocal Spatiotemporal Transforms”, submitted to IEEE Trans. Image Process., preprint, October 2011.

M. Maggioni, G. Boracchi, A. Foi, and K. Egiazarian, “Video denoising using separable 4D nonlocal spatiotemporal transforms”, Proc. SPIE Electronic Imaging 2011, Image Processing: Algorithms and Systems IX, 7870-2, San Francisco (CA), USA, January 2011.

M. Mäkitalo and A. Foi, “Spatially adaptive alpha-rooting in BM3D sharpening”, Proc. SPIE Electronic Imaging 2011, Image Processing: Algorithms and Systems IX, 7870-39, San Francisco (CA), USA, January 2011.

M. Mäkitalo and A. Foi, “Optimal inversion of the Anscombe transformation in low-count Poisson image denoising”, IEEE Trans. Image Process., vol. 20, no. 1, pp. 99-109, January 2011. doi:10.1109/TIP.2010.2056693

2010

O. Pirinen, A. Foi, and A. Gotchev, “Color High Dynamic Range Imaging: Algorithms for Acquisition and Display”, in Computational Photography: Methods and Applications (R. Lukac, ed.), CRC Press / Taylor & Francis, ISBN: 978-1-4398-1749-0, October 2010      

A. Danielyan, A. Foi, V. Katkovnik, and K. Egiazarian, “Spatially adaptive filtering as regularization in inverse imaging: compressive sensing, upsampling, and super-resolution”, in Super-Resolution Imaging (P. Milanfar, ed.), CRC Press / Taylor & Francis, ISBN: 978-1-4398-1930-2, September 2010      

M. Maggioni, R. Mysore, E. Coffey, and A. Foi, “Four-dimensional collaborative denoising and enhancement of timelapse imaging of mCherry-EB3 in hippocampal neuron growth cones”, poster at BioPhotonics and Imaging Conference (BioPIC) 2010, Dunboyne, Ireland, October 2010.

V. Katkovnik and A. Foi, “Advanced Image Processing Based on Spatially Adaptive Nonlocal Image Filtering and Regularization”, Tutorial at 17th IEEE Int. Conf. Image Process., ICIP 2010, Hong Kong, 26-29 September 2010.

M. Mäkitalo, A. Foi, D. Fevralev, and V. Lukin, “Denoising of single-look SAR images based on variance stabilization and nonlocal filters”, Proc. Int. Conf. Math. Meth. Electromagn. Th., MMET 2010, Kiev, Ukraine, September 2010. doi:10.1109/MMET.2010.5611418

A. Danielyan, A. Foi, V. Katkovnik, and K. Egiazarian, “Denoising of Multispectral Images via Nonlocal Groupwise Spectrum-PCA”, Proc. 5th European Conf. Colour in Graphics, Imaging, and Vision, 12th Int. Sym. Multispectral Colour Science, CGIV2010/MCS'10, pp. 261-266, Joensuu, Finland, June 2010.

V. Katkovnik, A. Foi, K. Egiazarian, and J. Astola, “From local kernel to nonlocal multiple-model image denoising”, Int. J. Computer Vision, vol. 86, no. 1, pp. 1-32, January 2010. doi:10.1007/s11263-009-0272-7

2009

A. Foi,“Clipped noisy images: heteroskedastic modeling and practical denoising”, Signal Processing, vol. 89, no. 12, pp. 2609-2629, December 2009. doi:10.1016/j.sigpro.2009.04.035

A. Foi,“Optimization of variance-stabilizing transformations”, preprint.

M. Mäkitalo and A. Foi, “On the inversion of the Anscombe transformation in low-count Poisson image denoising”, Proc. Int. Workshop on Local and Non-Local Approx. in Image Process., LNLA 2009, Tuusula, Finland, pp. 26-32, August 2009. doi:10.1109/LNLA.2009.5278406

A. Danielyan and A. Foi, “Noise variance estimation in nonlocal transform domain”, Proc. Int. Workshop on Local and Non-Local Approx. in Image Process., LNLA 2009, Tuusula, Finland, pp. 41-45, August 2009. doi:10.1109/LNLA.2009.5278404

A. Danielyan, M. Vehviläinen, A. Foi, V. Katkovnik, and K. Egiazarian, “Cross-color BM3D filtering of noisy raw data”, Proc. Int. Workshop on Local and Non-Local Approx. in Image Process., LNLA 2009, Tuusula, Finland, pp. 125-129, August 2009. 10.1109/LNLA.2009.5278395

K. Dabov, A. Foi, V. Katkovnik, and K. Egiazarian, “BM3D Image Denoising with Shape-Adaptive Principal Component Analysis”, Proc. Workshop on Signal Processing with Adaptive Sparse Structured Representations (SPARS'09), Saint-Malo, France, April 2009. HAL

2008

A. Foi, “Practical denoising of clipped or overexposed noisy images”, Proc. 16th European Signal Process. Conf., EUSIPCO 2008, Lausanne, Switzerland, August 2008.

A. Danielyan, A. Foi, V. Katkovnik, and K. Egiazarian, “Image Upsampling Via Spatially Adaptive Block-Matching Filtering”, Proc. 16th European Signal Process. Conf., EUSIPCO 2008, Lausanne, Switzerland, August 2008.

D. Paliy, A. Foi, R. Bilcu, V. Katkovnik, and K. Egiazarian, “Joint deblurring and demosaicing of Poissonian Bayer-data based on local adaptivity”, Proc. 16th European Signal Process. Conf., EUSIPCO 2008, Lausanne, Switzerland, August 2008.

G. Boracchi and A. Foi, “Multiframe raw-data denoising based on block-matching and 3-D filtering for low-light imaging and stabilization”, Proc. Int. Workshop on Local and Non-Local Approx. in Image Process., LNLA 2008, Lausanne, Switzerland, August 2008.

V. Katkovnik, A. Foi, K. Egiazarian, and J. Astola, “Nonparametric regression in imaging: from local kernel to multiple-model nonlocal collaborative filtering”, Proc. Int. Workshop on Local and Non-Local Approx. in Image Process., LNLA 2008, Lausanne, Switzerland, August 2008.

A. Danielyan, A. Foi, V. Katkovnik, and K. Egiazarian, “Image and video super-resolution via spatially adaptive block-matching filtering”, Proc. Int. Workshop on Local and Non-Local Approx. in Image Process., LNLA 2008, Lausanne, Switzerland, August 2008.

K. Dabov, A. Foi, V. Katkovnik, and K. Egiazarian, “A nonlocal and shape-adaptive transform-domain collaborative filtering”, Proc. Int. Workshop on Local and Non-Local Approx. in Image Process., LNLA 2008, Lausanne, Switzerland, August 2008.

V. Katkovnik, A. Foi, K. Dabov, and K. Egiazarian, “Spatially adaptive support as a leading model-selection tool for image filtering”, Proc. First Workshop Inf. Th. Methods Sci. Eng., WITMSE, Tampere, August 2008.

A. Foi, M. Trimeche, V. Katkovnik, and K. Egiazarian, “Practical Poissonian-Gaussian noise modeling and fitting for single image raw-data”, IEEE Trans. Image Process., vol. 17, no. 10, pp. 1737-1754, October 2008. doi:10.1109/TIP.2008.2001399

D. Paliy, A. Foi, R. Bilcu, V. Katkovnik, “Denoising and interpolation of noisy Bayer data with adaptive cross-color filters”, SPIE-IS&T Electronic Imaging, Visual Communications and Image Processing 2008, vol. 6822, no. 6822-1K, San Jose (CA), USA, January 2008.

G. Boracchi, A. Foi, V. Katkovnik, and K. Egiazarian, “Deblurring Noisy Radial-Blurred Images: a spatially adaptive filtering approach,” Proc. SPIE Electronic Imaging '08, vol. 6812, no. 6812-07, San Jose (CA), USA, January 2008.

K. Dabov, A. Foi, V. Katkovnik, and K. Egiazarian, “Image restoration by sparse 3D transform-domain collaborative filtering, ” Proc. SPIE Electronic Imaging '08, vol. 6812, no. 6812-1D, San Jose (CA), USA, January 2008.

2007

A. Foi, Pointwise shape-adaptive DCT image filtering and signal-dependent noise estimation, Tampere University of Technology, Publication 710, ISBN 978-952-15-1922-2, December 2007.

A. Foi, S. Alenius, V. Katkovnik, and K. Egiazarian, “Noise measurement for raw-data of digital imaging sensors by automatic segmentation of non-uniform targets”, IEEE Sensors Journal, vol. 7, no. 10, pp. 1456-1461, October 2007. doi:10.1109/JSEN.2007.904864

A. Foi, V. Katkovnik, and K. Egiazarian, “Signal-dependent noise removal in Pointwise Shape-Adaptive DCT domain with locally adaptive variance”, Proc. 15th European Signal Process. Conf., EUSIPCO 2007, Poznan, September 2007.

A. Foi, “Spatially adaptive local approximations in signal and image processing: varying-scale polynomials, anisotropic adaptation, shape-adaptive transforms”, Lecture notes of the tutorial given at the 15th European Signal Process. Conf., EUSIPCO 2007, Poznan, September 2007.

V. Katkovnik, A. Foi, K. Egiazarian, “Mix-distribution modeling for overcomplete denoising”, Proc. 9th workshop on Adaptation and Learning in Control and Signal Processing (ALCOSP'07), St. Petersburg, Russia, August, 29-31, 2007.

A. Foi, V. Katkovnik, and K. Egiazarian, “Pointwise Shape-Adaptive DCT for High-Quality Denoising and Deblocking of Grayscale and Color Images”, IEEE Trans. Image Process., vol. 16, no. 5, pp. 1395-1411, May 2007. doi:10.1109/TIP.2007.891788

K. Egiazarian, A. Foi, and V. Katkovnik, “Compressed Sensing Image Reconstruction via Recursive Spatially Adaptive Filtering”, Proc. IEEE Int. Conf. Image Process., ICIP 2007, San Antonio (TX), USA, pp. 549-552, September 2007.

K. Dabov, A. Foi, V. Katkovnik, and K. Egiazarian, “Joint image sharpening and denoising by 3D transform-domain collaborative filtering, ” Proc. 2007 Int. TICSP Workshop Spectral Meth. Multirate Signal Process., SMMSP 2007, Moscow, Russia, September 2007.

K. Dabov, A. Foi, and K. Egiazarian, “Video denoising by sparse 3D transform-domain collaborative filtering, ” Proc. 15th European Signal Processing Conference, EUSIPCO 2007, Poznan, Poland, September 2007.

K. Dabov, A. Foi, V. Katkovnik, and K. Egiazarian, “Color image denoising via sparse 3D collaborative filtering with grouping constraint in luminance-chrominance space,” Proc. IEEE Int. Conf. Image Process., ICIP 2007, San Antonio, TX, USA, September 2007.

K. Dabov, A. Foi, V. Katkovnik, and K. Egiazarian, “Image denoising by sparse 3D transform-domain collaborative filtering, ” IEEE Trans. Image Process., vol. 16, no. 8, pp. 2080-2095, August 2007. doi:10.1109/TIP.2007.901238

O. Pirinen, A. Foi, and A. Gotchev, “Color High Dynamic Range Imaging: The Luminance-Chrominance Approach”, Int. J. Imaging Systems and Technology (IJIST), Special Issue on Applied Color Image Processing, vol. 17, no. 3, pp. 152-162, October 2007. doi:10.1002/ima.20115

O. Pirinen, A. Foi, and A. Gotchev, “Color High Dynamic Range (HDR) Imaging in Luminance-Chrominance Space”, Proc. Third Int. Workshop on Video Processing and Quality Metrics for Consumer Electronics, VPQM2007, Scottsdale (AZ), USA, January 2007.

2006

A. Foi, V. Katkovnik, and K. Egiazarian, “Pointwise Shape-Adaptive DCT for high-quality deblocking of compressed color images”, Proc. 14th European Signal Process. Conf., EUSIPCO 2006, Florence, September 2006.

A. Foi and V. Katkovnik, “From local polynomial approximation to pointwise shape-adaptive transforms: an evolutionary nonparametric regression perspective”, Proc. Int. TICSP Workshop Spectral Meth. Multirate Signal Process., SMMSP 2006, Florence, September 2006.

A. Foi, S. Alenius, M. Trimeche, and V. Katkovnik, “Adaptive-size block transforms for Poissonian image deblurring”, Proc. Int. TICSP Workshop Spectral Meth. Multirate Signal Process., SMMSP 2006, Florence, September 2006.

K. Dabov, A. Foi, V. Katkovnik, and K. Egiazarian, “Inverse halftoning by pointwise shape-adaptive DCT regularized deconvolution”, Proc. Int. TICSP Workshop Spectral Meth. Multirate Signal Process., SMMSP 2006, Florence, September 2006.

A. Foi, R. Bilcu, V. Katkovnik, and K. Egiazarian, “Adaptive-size block transforms for signal-dependent noise removal”, Proc. 7th Nordic Signal Processing Symposium, NORSIG 2006, Reykjavik, Iceland, June 7-9, 2006.

A. Foi, K. Dabov, V. Katkovnik, and K. Egiazarian, “Shape-Adaptive DCT for denoising and image reconstruction”, Proc. SPIE Electronic Imaging 2006, Image Processing: Algorithms and Systems V, 6064A-18, San Jose, CA, January 2006.

K. Dabov, A. Foi, V. Katkovnik, and K. Egiazarian, “Image denoising with block-matching and 3D filtering, ” Proc. SPIE Electronic Imaging '06, no. 6064A-30, San Jose, California, USA, January 2006.

A. Foi, V. Katkovnik, D. Paliy, K. Egiazarian, M. Trimeche, S. Alenius, R. Bilcu, M. Vehviläinen, “Apparatus, method, mobile station and computer program product for noise estimation, modeling and filtering of a digital image”, United States Patent 7,652,788, granted January 26, 2010 (Applications no. 11/426,128, June 23, 2006, and no. 11/519,722, September 11, 2006).

A. Foi, V. Katkovnik, and K. Egiazarian, “Pointwise Shape-Adaptive DCT denoising with structure Preservation in Luminance-Chrominance Space”, Proc. of the 2nd Int. Workshop on Video Process. and Quality Metrics for Consumer Electronics, VPQM2006, Scottsdale, AZ, January 2006.

A. Boev, A. Foi, K. Egiazarian, and V. Katkovnik, “Adaptive scales as a structural similarity indicator for image quality assessment”, Proc. of the 2nd Int. Workshop on Video Process. and Quality Metrics for Consumer Electronics, VPQM2006, Scottsdale, AZ, January 2006.

A. Shulev, A. Gotchev, A. Foi, and I.R. Roussev, “Threshold selection in transform-domain denoising of speckle pattern fringes”, Proc. SPIE 6252 (Holography 2005: Int. Conf. on Holography, Optical Recording, and Processing of Information), pp. 625220.1-625220.7, 2006.

2005

A. Foi, Anisotropic nonparametric image processing: theory, algorithms and applications, Ph.D. Thesis, Dip. di Matematica, Politecnico di Milano, April 2005.         Introduction and Table of Contents (html)

A. Foi, S. Alenius, M. Trimeche, V. Katkovnik, and K. Egiazarian, “A spatially adaptive Poissonian image deblurring”, Proc. of IEEE 2005 Int. Conf. Image Processing, ICIP 2005, Genova, September 2005.

A. Foi, R. Bilcu, V. Katkovnik, and K. Egiazarian, “Anisotropic local approximations for pointwise adaptive signal-dependent noise removal”, Proc. XIII European Signal Process. Conf., EUSIPCO 2005, Antalya, September 2005.

A. Foi, V. Katkovnik, and K. Egiazarian, “Pointwise Shape-Adaptive DCT as an overcomplete denoising tool”, Proc. Int. TICSP Workshop Spectral Meth. Multirate Signal Process., SMMSP 2005, Riga, 2005.

V. Katkovnik, A. Foi, K. Egiazarian, and J. Astola, “Anisotropic local likelihood: theory, algorithms, applications”, Proc. of El. Imaging 2005: Image Processing: Algorithms and Systems IV, 5672-19, 2005.

C. Ercole, A. Foi, V. Katkovnik, and K. Egiazarian, “Spatio-temporal pointwise adaptive denoising of video: 3D non-parametric approach”, Proc. of the 1st Int. Workshop on Video Process. and Quality Metrics for Consumer Electronics, VPQM2005, 2005.

≤ 2004

A. Foi, V. Katkovnik, K. Egiazarian, and J. Astola, “A novel anisotropic local polynomial estimator based on directional multiscale optimizations”, Proc. of the 6th IMA Int. Conf. Math. in Signal Processing, Cirencester (UK), pp. 79-82, 2004.

A. Foi, V. Katkovnik, K. Egiazarian, and J. Astola, “Inverse halftoning based on the anisotropic LPA-ICI deconvolution”, Proc. Int. TICSP Workshop Spectral Meth. Multirate Signal Process., SMMSP 2004, Vienna, pp. 49-56, 2004.

V. Katkovnik, A. Foi, K. Egiazarian, and J. Astola, “Directional varying scale approximations for anisotropic signal processing”, Proc. of XII European Signal Process. Conf., EUSIPCO 2004, pp. 101-104, 2004.

A. Foi, Piastrellamenti di spazi di Banach, (in italian, english title: Tilings of Banach spaces) Tesi di Laurea in Matematica, Dipartimento di Matematica, Università degli Studi di Milano, 2001.