**Date of Birth:**23 October 1983**Nationality:**Bulgarian

1113 Sofia, Bulgaria

Email: sharizanov@parallel.bas.bg

Phone: (+359-2) 979 67 94 Fax: (+359-2) 8 707 273

**March 2008 - October 2011 -**PhD in Mathematics, Jacobs University Bremen, Germany
PhD thesis Analysis of nonlinear subdivision and multi-scale transforms
**September 2005 - February 2008 -**MSc in Mathematics, Jacobs University Bremen, Germany
Master's Thesis Stability of nonlinear subdivision schemes and multiresolutions
**October 2001 - June 2005 -**BSc in Mathematics, Faculty of Mathematics and Informatics, Sofia University

- Nonlinear Subdivision; Normal multi-scale transforms for curves and surfaces
- Computer Aided Geometric Design
- Image and Signal Processing: Segmentation, Denoising, Deblurring, and Feature Extraction
- Mathematical Modeling; Constrained Optimization
- Primal-Dual Algorithms and their Parallel implementation

- English
- Russian
- German

- S. Harizanov, S. Margenov,
**Positive approximations of the inverse of fractional powers of SPD M-matrices**,*Control Systems and Mathematical Methods in Economics*. LNEMS, Springer International Publishing AG, 2018. (to appear) - S. Harizanov, R. Lazarov, S. Margenov, P. Marinov, Y. Vutov,
**Optimal solvers for linear systems with fractional powers of sparse SPD matrices**,*Numer Linear Algebra Appl.*e2167, 2018. - D. Toneva, S. Nikolova, I. Georgiev, S. Harizanov, D. Zlateva, V. Hadjidekov, N. Lazarov,
**Facial soft tissue thicknesses in Bulgarian adults: relation to sex, body mass index and bilateral asymmetry**,*Folia Morphologica*Published online, December 2017. - S. Harizanov, J. de Dios Pont, S. Ståhl, D. Wenzel,
**Noise Removal and Feature Extraction of 2D CT Radiographic Images**,*Advanced Computing in Industrial Mathematics*. SCI 728, 57-70, Springer, Cham, 2018. - S. Nikolova, D. Toneva, I. Georgiev, S. Harizanov, D. Zlateva, V. Hadjidekov, N. Lazarov,
**A CT-study of the Cranial Suture Morphology and its Reorganization during the Obliteration**,*Collegium Antropologicum*42(2) 125-131, 2017. - S. Harizanov, I. Lirkov, K. Georgiev, M. Paprzycki, M. Ganzha,
**Performance analysis of a parallel algorithm for restoring large-scale CT images**,*Journal of Computational and Applied Mathematics*310, 104-114, 2017. - S. Harizanov, S. Margenov, P. Marinov, Y. Vutov,
**Volume constrained 2-phase segmentation method utilizing a linear system solver based on the best uniform polynomial approximation of x^{-1/2}**,*Journal of Computational and Applied Mathematics*310, 115-128, 2017. - S. Harizanov, I. Georgiev,
**Fast Algorithm for Optimal Graph-Laplacian Based 3D Image Segmentation**,*AIP Conf. Proc.*1773, 110006, 2016. - S. Harizanov,
**Deblurring Poissonian Images via Multi-constraint Optimization**,*Innovative Approaches and Solutions in Advanced Intelligent Systems*. SCI 648, 201-217, Springer International Publishing Switzerland, 2016. - S. Harizanov, S. Margenov, L. Zikatanov,
**Fast Constrained Image Segmentation Using Optimal Spanning Trees**,*Large-Scale Scientific Computing (LSSC 2015)*. LNCS 9374, 15-29, Springer International Publishing Switzerland, 2015. - I. Georgiev, S. Harizanov, Y. Vutov,
**Supervised 2-Phase Segmentation of Porous Media with Known Porosity**,*Large-Scale Scientific Computing (LSSC 2015)*. LNCS 9374, 343-351, Springer International Publishing Switzerland, 2015. - S. Stoykov, S. Harizanov, S. Margenov,
**Space discretization by B-Splines on discontinuous problems in structural mechanics**,*Proceedings of the 7th Balkan Conference in Informatics (BCI 2015)*. ISBN: 978-1-4503-3335-1, Paper Id: 31, 7 pages, 2015. - S. Harizanov, J.-C. Pesquet, G. Steid,
**Epigraphical projection for solving least squares Anscombe transformed constrained optimization problems**, A. Kuijper et al., (eds.),*Scale-Space and Variational Methods in Computer Vision (SSVM 2013)*. LNCS 7893, 125-136, Springer-Verlag: Berlin, 2013. - S. Harizanov,
**Globally convergent adaptive Normal multi-scale transforms**, J.-D. Boissonnat et al. (eds.),*Curves and Surfaces - 7th International Conference, Avignon, France*. LNCS 6920, 296-310, Springer, 2012. - S. Harizanov, P. Oswald, T. Shingel,
**Normal multi-scale transforms for curves**,*Foundations of Computational Mathematics*11(6), 617-656, 2011. - S. Harizanov, P. Oswald,
**Stability of nonlinear subdivision and multiscale transforms**,*Constructive Approximation*31, 359-393, 2010.

- S. Harizanov,
**Digital image processing with application in industrial computed tomography**,*Математика и математическо образование*, 59-67, 2018. ISSN:1313-3330 - S. Harizanov, I. Lirkov, I. Georgiev,
**Restoration of Low-dose CT Radiographic Images**,*Short Communications "IWCIA'17"*, 17-21, 2017. ISBN:978-954-8852-74-6 - S. Harizanov, I. Lirkov, I. Georgiev, Al. Skordev,
**Denoising and segmentation of digital radiographic images**,*Scientific Proceedings "NDT days 2016"*, 438-440, 2016. ISSN:1310-3946 - S. Harizanov, I. Lirkov, I. Georgiev,
**Denoising 2D CT radiographic images**,*Proceedings of the International Conference on Numerical Methods for Scientific Computations and Advanced Applications*, 31-35, 2016. ISBN:978-619-7223-18-7 - S. Harizanov, I. Georgiev, S. Margenov,
**Supervised 3D-Surface Fitting**,*BGSIAM'15 Proceedings*, 23-24, 2015. ISSN:1313-3357 - S. Harizanov,
**Stability of nonlinear multiresolution analysis**,*Proceedings in Applied Mathematics and Mechanics (PAMM)*8(1), 10933-10934, 2008.

- S. Harizanov, D. Dimov, N. Naidenov, S. Kostadinova,
**Multi-frame Denoising of Still Images**,*120th European Study Group with Industry (ESGI'120), Problems & Final Reports*, 31-53, 2016. ISBN:978-619-7223-31-6 - D. Wenzel, J. de Dios Pont, S. Stahl, V. Khyzhniak, Z. Nedyalkova, S. Harizanov (instructor),
**Denoising and feature extraction of 2D CT radiographic images**,*ECMI Modelling Week 2016, Problems & Final Reports*, 23 pages, 2016. - V. Bodurov, D. Dimov, G. Evtimov, I. Georgiev, S. Harizanov, G. Nikolov, V. Pirinski,
**The 2D/3D Best-Fit Problem**,*113th European Study Group with Industry (ESGI'113), Problems & Final Reports*, 62-73, 2015. ISBN:978-619-7223-12-5

8th Iinternational Conference Computational Methods in Applied Mathematics (CMAM-8), Minsk (Belarus), July 2 - May 6, 2018.

International Conference on "Numerical Methods for Scientific Computations and Advanced Applications" NMSCAA'18, Hissarya (Bulgaria), May 28 - May 31, 2018.

47th Spring Conference of the Union of Bulgarian Mathematicians, Borovets (Bulgaria), April 2-6, 2018.

12th Annual Meeting of the Bulgarian Section of SIAM, Sofia (Bulgaria), December 20-22, 2017.

6th CMAPT Workshop (Computational Mathematics and AProximation Theory), Linz (Austria), September 5-9, 2017.

2nd International Conference Mathematics Days in Sofia (MDS2017), Sofia (Bulgaria), July 10-14, 2017.

18th International Workshop on Combinatorial Image Analysis (IWCIA'17), Plovdiv (Bulgaria), June 19-21, 2017.

International Conference NDT Days 2017, Sozopol (Bulgaria), June 12-16, 2017.

11th International Conference on Large-Scale Scientific Computations, Sozopol (Bulgaria), June 5-9, 2017.

11th Annual Meeting of the Bulgarian Section of SIAM, Sofia (Bulgaria), December 20-22, 2016.

Workshop on Approximation Theory, CAGD, Numerical Analysis, and Symbolic Computation , Sofia (Bulgaria), September 6-11, 2016.

120th European Study Group with Industry , Sofia (Bulgaria), July 25-29, 2016.

The ECMI Modelling Week (instructor), Sofia (Bulgaria), July 17-24, 2016.

8th Conference of the Euro-American Consortium for Promoting the "Application of Mathematics in Technical and Natural Sciences" AMiTaNS'16, Albena (Bulgaria), June 22-27, 2016.

International Conference on Constructive Theory of Functions, Sozopol (Bulgaria), June 11-17, 2016.

Second Workshop on Advanced Techniques in Non-Destructive Testing, Sozopol (Bulgaria), June 8, 2016.

International Conference on "Numerical Methods for Scientific Computations and Advanced Applications" NMSCAA'16, Hissarya (Bulgaria), May 29 - June 02, 2016.

International Workshop on Characterization of Material Properties based on X-ray Tomography, Panagyurishte (Bulgaria), April 20-22, 2016.

10th Annual Meeting of the Bulgarian Section of SIAM , Sofia (Bulgaria), December 21-22, 2015.

The International Conference Advanced Computing for Innovation (AComIn 2015), Sofia (Bulgaria), November 10-11, 2015.

113th European Study Group with Industry (ESGI'113), Sofia (Bulgaria), September 14-18, 2015.

10th International Conference on Large-Scale Scientific Computations (LSSC 2015), Sozopol (Bulgaria), June 8-12, 2015.

XXIII Congress on Differential Equations and Applications / XIII Congress on Applied Mathematics, Castellon (Spain), September 9-13, 2013.

International conference on Constructive Theory of Functions, Sozopol (Bulgaria), June 9-15, 2013.

4th International Conference on Scale Space and Variational Methods in Computer Vision, Schloss Seggau (Graz region, Austria), June 2-6, 2013.

3rd Dolomites Workshop on Constructive Approximation and Applications, Alba di Canazei (Trento, Italy), September 9-14, 2012.

8th International Conference on Mathematical Methods for Curves and Surfaces, Oslo, Norway, June 28 - July 3, 2012.

International Symposium in Approximation Theory, Vanderbuilt University, Nashville, TN, USA, May 17-21, 2011.

Workshop on Compressed Sensing, Sparsity and Inverse Problems, TU Braunschweig, Germany, September 6-7, 2010.

WE-Heraeus workshop "Biomedical Modeling and Visualization", Jacobs University Bremen, Germany, August 12-20, 2010.

New Trends in Harmonic and Complex Analysis, Jacobs University Bremen, Germany, June 29 - July 3, 2010.

7th International Conference on Curves and Surfaces, Avignon, France, June 24-30, 2010.

Workshop on Nonlinear Approximation, Philipps-University, Marburg, Germany, May 27-28, 2010.

Research workshop on Subdivision and Refinability, Pontignano (SI), Italy, October 12-15, 2009.

79th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Bremen, Germany, March 31 - April 4, 2008.