Background

I have a background of Master of Science from Linköping University (Applied Physics and Electrical Engineering, 1992), and I worked some time in the industry (ABB, Ludvika)1993-1994. I have then progress my knowledge with a Technical licentiate degree from the Royal Institute of Technology, Stockholm (Signal Processing, 1998) and later also a PhD degree from Ecole Polytechnique Federale de Lausanne (Modelling of Non-linear Systems, 2001). After arriving at Mid Sweden University, I have obtaine both Docent degree (Associate Professor, 2008) and now also the Professor's degree in Signal Processing (2013). I am now the highest representative of the research subject Computer and System Sciences at Mid Sweden University, and I am also part of the managerial group of Dept. of Information and Communication Systems (IKS).

During my studies and my research work, I have strived to get to know new environments and absorb new knowledge and tried to move between subjects and applications. Therefore, I have had exchanges at Technische Hochschule Darmstadt (1990-1991), CERN (1991-1992, 1994-1996), University of Maryland (2000), as well as University of Sannio (2003, 2007).

Area of interest

My main research area is Multi-Dimensional Signal Processing where System Modelling and Identification has been a large part. I have during later years applied it to Image and Video Processing, as well as Multi-media Communications. Now I research Multi-Scopic 3D: capture, procesing, coding and presentation/visualization.

Current research

I am the founder and head of the research group Realistic 3D, and I lead its activities in research projects in collaboration with several industrial partners. We focus our research on

-- Synthesis and capture of 3D images and video
-- Rendering techniques for virtual perspective views
-- Modelling of systems for 3D capture and presentation
-- Coding of 3D images and video
-- 3D quality metrics and assessments
-- Remote control and measurements

In previous research I addressed System Modelling and Identification applied to transfer functions estimations for particle beams (CERN), modelling of hysteresis in superconductors and superconducting devices (EPFL).

Teaching and tutoring

I have taught a fair amount of different courses at Bachelor and Master level, among others Applied Signal Processing, Automatic Control, Automatic and Logic Control, Circuits and Systems, Computer Hardware and Architecture, Digital Electronics, Introduction to Computer Science, Programming in C, Linear and Nonlinear Optimisation, Signal Theory, Signals and Systems, TCP/IP Networking, and Telecommunication - Technologies, Services and Trends. I have also supervised and examined many Bachelor and Master thesis works.

I have also given PhD courses related to our research: Signal Theory, Video Processing and Communication, Video Quality Assessment, and Fundamentals of Realistic 3D.

Publications

Articles in journals Conference papers Doctoral theses, monographs Licentiate theses, monographs Manuscripts Other Reports

Articles in journals

Schwarz, S. , Sjöström, M. & Olsson, R. (2014). A Weighted Optimization Approach to Time-of-Flight Sensor Fusion. IEEE Transactions on Image Processing, vol. 23: 1, pp. 214-225.

Schwarz, S. , Sjöström, M. & Olsson, R. (2014). Multivariate Sensitivity Analysis of Time-of-Flight Sensor Fusion. 3D Research, vol. 5: 3

Navarro, H. , Saavedra, G. , Martinez-Corral, M. , Sjöström, M. & Olsson, R. (2014). Depth-of-field enhancement in integral imaging by selective depth-deconvolution. IEEE/OSA Journal of Display Technology, vol. 10: 3, pp. 182-188.

Schwarz, S. , Olsson, R. & Sjöström, M. (2013). Depth Sensing for 3DTV: A Survey. IEEE Multimedia, vol. 20: 4, pp. 10-17.

Muddala, S. M. , Olsson, R. & Sjöström, M. (2013). Depth-Included Curvature Inpainting for Disocclusion Filling in View Synthesis. International Journal On Advances in Telecommunications, vol. 6: 3&4, pp. 132-142.

Wang, K. , Barkowsky, M. , Brunnström, K. , Sjöström, M. , Cousseau, R. & Le Callet, P. (2012). Perceived 3D TV transmission quality assessment : Multi-laboratory results using absolute category rating on quality of experience scale. IEEE transactions on broadcasting, vol. 58: 4, pp. 544-557.

Karlsson, L. S. & Sjöström, M. (2011). Layer assignment based on depth data distribution for multiview-plus-depth scalable video coding. IEEE transactions on circuits and systems for video technology (Print), vol. 21: 6, pp. 742-754.

Sjöström, M. & Gulliksson, M. (2008). Identifiability Analysis of Prandtl-Ishilinskii Hysteresis Model with Saturation. Physica. B, Condensed matter, vol. 403: 2-3, pp. 266-270.

Sjöström, M. , Grilli, F. & Spreafico, S. (2008). Modelling of a three-phase concentric HTS-cable. Physica. B, Condensed matter, vol. 403: 2-3, pp. 405-409.

Sjöström, M. & Visone, C. (2006). "Moving" Prandtl-Ishilinskii operators with compensator in a closed form. Physica. B, Condensed matter, vol. 372: 1-2, pp. 97-100.

Sjöström, M. (2004). Differentiation and power loss computation of classical Preisach model. Physica. B, Condensed matter, vol. 343: 1-4, pp. 96-100.

Visone, C. & Sjöström, M. (2004). Exact invertible hysteresis models based on play operators. Physica. B, Condensed matter, vol. 343: 1-4, pp. 148-152.

Grilli, F. & Sjöström, M. (2004). Prediction of resistive and hysteretic losses in a multi-layer high-Tc superconducting cable. Superconductors Science and Technology, vol. 17: 3, pp. 409-416.

Sjöström, M. , Dutoit, B. & Duron, J. (2003). Equivalent Circuit Model for Superconductors. IEEE transactions on applied superconductivity (Print), vol. 13: 2, pp. 1890-1893.

Sjöström, M. & Politano, D. (2001). Technical and Economical Impacts on a Power System by Introducing an HTS FCL. IEEE Transactions on Applied Superconductivity, vol. 11: 1, pp. 2042-2045.

Sjöström, M. (2001). Possibilities and limitations of using Preisach model for hysteresis in superconductors. Physica B: Condensed Matter, vol. 306: 1-4, pp. 256-260.

Politano, D. , Sjöström, M. , Schnyder, G. & Rhyner, J. (2001). Technical and Economical Assessment of HTS Cables. IEEE Transactions on Applied Superconductivity, vol. 11: 1, pp. 2477-2480.

Schnyder, G. , Rhyner, J. , Politano, D. & Sjöström, M. (2000). Anwendung der Hochtemperatur-Supraleitung in elektrischen Netzen. Bulletin des Schweizerischen Elektrotechnischen Vereins und des Verbandes Schweizerischer Elektrizitätsunernehmen, vol. 18, pp. 11-17.

Sjöström, M. , Djukic, D. & Dutoit, B. (2000). Parameterized Hysteresis Model for High Temperature Superconductors. IEEE Transactions on Applied Superconductivity, vol. 10: 2, pp. 1585-1592.

Sjöström, M. , Cherkaoui, R. & Dutoit, B. (1999). Enhancement of Power System Transient Stability using Superconducting Fault Current Limiters. IEEE Transactions on Applied Superconductivity, vol. 9: 2, pp. 1328-1330.

Sjöström, M. (1999). Frequency Analysis of Classical Preisach Model. IEEE Transactions on Magnetics, vol. 35: 4, pp. 2097-2103.

Dutoit, B. , Sjöström, M. & Stavrev, S. (1999). Bi(2223) Ag Sheathed Tape Ic and Exponent n Characterization and Modelling under DC Applied Magnetic Field. IEEE Transactions on Applied Superconductivity, vol. 9: 2, pp. 809-812.

Conference papers

Schwarz, S. , Sjöström, M. & Olsson, R. (2014). Temporal Consistent Depth Map Upscaling for 3DTV. In Proceedings of SPIE - The International Society for Optical Engineering : Three-Dimensional Image Processing, Measurement (3DIPM), and Applications 2014. (Conference volume). pp. Art. no. 901302-

Schwarz, S. , Sjöström, M. & Olsson, R. (2014). Time-of-Flight Sensor Fusion with Depth Measurement Reliability Weighting. In 3DTV-Conference.. pp. Art. no. 6874759-

Li, Y. , Sjöström, M. , Olsson, R. & Jennehag, U. (2014). Efficient Intra Prediction Scheme For Light Field Image Compression. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings.. pp. Art. no. 6853654-

Damghanian, M. , Olsson, R. & Sjöström, M. (2014). Performance analysis in Lytro camera: Empirical and model based approaches to assess refocusing quality. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings.. pp. 559--563.

Muddala, S. M. , Sjöström, M. & Olsson, R. (2014). Depth-Based Inpainting For Disocclusion Filling. In 3DTV-Conference.. pp. Art. no. 6874752-

Navarro-Fructuoso, H. , Saavedra-Tortosa, G. , Martinez-Corral, M. , Sjöström, M. & Olsson, R. (2013). Extended depth-of-field in integral imaging by depth-dependent deconvolution. .

Muddala, S. M. , Olsson, R. & Sjöström, M. (2013). Disocclusion Handling Using Depth-Based Inpainting. In Proceedings of MMEDIA 2013, The Fifth InternationalConferences on Advances in Multimedia, Venice, Italy, 2013.. pp. 136--141.

Li, Y. , Sjöström, M. , Jennehag, U. & Olsson, R. (2013). Depth Map Compression with Diffusion Modes in 3D-HEVC. In MMEDIA 2013 - 5th International Conferences on Advances in Multimedia.. pp. 125--129.

Li, Y. , Sjöström, M. , Jennehag, U. , Olsson, R. & Sylvain, T. (2013). Subjective Evaluation of an Edge-based Depth Image Compression Scheme. In Proceedings of SPIE - The International Society for Optical Engineering : Stereoscopic Displays and Applications XXIV.. pp. Art. no. 86480D-

Li, Y. , Sjöström, M. , Jennehag, U. & Olsson, R. (2013). Depth Image Post-processing Method by Diffusion. In Proceedings of SPIE-The International Society for Optical Engineering : 3D Image Processing (3DIP) and Applications.. pp. Art. no. 865003-

Muddala, S. M. , Sjöström, M. , Olsson, R. & Tourancheau, S. (2013). Edge-aided virtual view rendering for multiview video plus depth. In Proceedings of SPIE Volume 8650, Burlingame, CA, USA, 2013 : 3D Image Processing (3DIP) and Applications 2013.. pp. Art. no. 86500E-

Damghanian, M. , Olsson, R. , Sjöström, M. , Navarro Fructuoso, H. & Martinez Corral, M. (2013). Investigating the lateral resolution in a plenoptic capturing system using the SPC model. In Proceedings of SPIE - The International Society for Optical Engineering : Digital photography IX.. pp. 86600T-

Wang, K. , Brunnström, K. , Barkowsky, M. , Urvoy, M. , Sjöström, M. , Le Callet, P. , Tourancheau, S. & Andren, B. (2013). Stereoscopic 3D video coding quality evaluation with 2D objective metrics. In Proceedings of SPIE - The International Society for Optical Engineering. (Proceedings of SPIE). pp. Art. no. 86481L-

Eriksson, M. , Rahman, S. M. H. , Fraile, F. & Sjöström, M. (2013). Efficient Interactive Multicast over DVB-T2 : Utilizing Dynamic SFNs and PARPS. In IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB.. pp. Art. no. 6621700-

Schwarz, S. , Sjöström, M. & Olsson, R. (2012). Depth Map Upscaling Through Edge Weighted Optimization. In Proceedings of SPIE - The International Society for Optical Engineering.. pp. Art. no. 829008-

Sjöström, M. , Tourancheau, S. , Wang, X. & Olsson, R. (2012). A locally content-dependent filter for inter-perspective anti-aliasing. In Proceedings of SPIE - The International Society for Optical Engineering.. pp. Art. no. 829006-

Olsson, R. , Adhikarla, V. K. , Schwarz, S. & Sjöström, M. (2012). Converting conventional stereo pairs to multi-view sequences using morphing. In Proceedings of SPIE - The International Society for Optical Engineering.. pp. Art. no. 828828-

Tourancheau, S. , Sjöström, M. , Olsson, R. , Persson, A. & Ericson, T. (2012). Evaluation of quality of experience in interactive 3D visualization: methodology and results. In Proceedings of SPIE - The International Society for Optical Engineering.. pp. Art. no. 82880O-

Schwarz, S. , Olsson, R. , Sjöström, M. & Tourancheau, S. (2012). Adaptive depth filtering for HEVC 3D video coding. In 2012 Picture Coding Symposium, PCS 2012, Proceedings.. pp. 49--52.

Schwarz, S. , Sjöström, M. & Olsson, R. (2012). Improved edge detection for EWOC depth upscaling. In 2012 19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012. (Systems, Signals and Image Processing (IWSSIP)). pp. 1--4.

Tourancheau, S. , Sjöström, M. , Olsson, R. , Persson, A. , Ericson, T. , Rudling, J. & Norén, B. (2012). Subjective evaluation of user experience in interactive 3D-visualization in a medical context. In Proceedings of the SPIE, vol 8318: Conference on Image Perception, Observer Performance, and Technology Assessment, San Diego, CA, USA, 4 - 9 February 2012.. pp. Art. no. 831814-

Li, Y. , Sjöström, M. , Jennehag, U. & Olsson, R. (2012). A Scalable Coding Approach for High Quality Depth Image Compression. In 3DTV-Conference.. pp. Art. no. 6365469-

Damghanian, M. , Olsson, R. & Sjöström, M. (2012). Extraction of the lateral resolution in a plenoptic camera using the SPC model. In 2012 International Conference on 3D Imaging, IC3D 2012 - Proceedings.. pp. Art. no. 6615137-

Muddala, S. M. , Sjöström, M. & Olsson, R. (2012). Edge-preserving depth-image-based rendering method. In 2012 International Conference on 3D Imaging, IC3D 2012 - Proceedings.. pp. Art. no. 6615113-

Brunnström, K. , Sedano, I. , Wang, K. , Barkowsky, M. , Kihl, M. , Andrén, B. , Le Callet, P. , Sjöström, M. & et al. (2012). 2D no-reference video quality model development and 3D video transmission quality. In Proceedings of the Sixth International Workshop on Video Processing and Quality Metrics for Consumer Electronics VPQM-2012.

Damghanian, M. , Olsson, R. & Sjöström, M. (2012). The Sampling Pattern Cube : A Representation and Evaluation Tool for Optical Capturing Systems. In Advanced Concepts for Intelligent Vision Systems. Berlin / Heidelberg : (Lecture Notes in Computer Science). pp. 120--131.

Schwarz, S. , Sjöström, M. & Olsson, R. (2012). Incremental depth upscaling using an edge weighted optimization concept. In 3DTV-Conference.. pp. Art. no. 6365429-

Wang, K. , Barkowsky, M. , Cousseau, R. , Brunnström, K. , Olsson, R. , Le Callet, P. & Sjöström, M. (2011). Subjective evaluation of HDTV stereoscopic videos in IPTV scenarios using absolute category rating. In Proceedings of SPIE - The International Society for Optical Engineering Volume 7863, 2011. (Proceedings of SPIE - The International Society for Optical Engineering). pp. Art. no. 78631T-

Olsson, R. , Andersson, H. & Sjöström, M. (2011). A modular cross-platform GPU-based approach for flexible 3D video playback. In Proceedings of SPIE - The International Society for Optical Engineering. (Proceedings of SPIE - The International Society for Optical Engineering). pp. Art. no. 78631E-

Sjöström, M. , Härdling, P. , Karlsson, L. S. & Olsson, R. (2011). Improved Depth-Image-Based Rendering Algorithm. In 3DTV Conference: The True Vision - Capture, Transmission and Display of 3D Video, 3DTV-CON 2011 - Proceedings.. pp. Art. no. 5877183-

Sjöström, M. , Olsson, R. & Dalin, R. (2011). A digital 3D signage system and its effect on customer behavior. In The International Conference on 3D Imaging (IC3D).

Olsson, R. & Sjöström, M. (2010). Multiview image coding scheme transformations: artifact characteristics and effects on perceived 3D quality. In STEREOSCOPIC DISPLAYS AND APPLICATIONS XXI. (Proceedings of SPIE)

Sjöström, M. & Karlsson, L. (2010). Performance of scalable coding in depth domain. In Proceedings of the SPIE, Vol 7524 : Conference on Stereoscopic Displays and Applications XXI, San Jose, CA, JAN 18-20, 2010. (Proceedings of SPIE-IS&T Electronic Imaging). (Proceedings of SPIE - The International Society for Optical Engineering). pp. 75240A-

Karlsson, L. & Sjöström, M. (2009). Multiview plus depth scalable coding in the depth domain. In 3DTV-CON 2009 - 3rd 3DTV-Conference: The True Vision - Capture, Transmission and Display of 3D Video, Proceedings.. pp. 5069631-

Olsson, R. & Sjöström, M. (2008). A novel quality metric for evaluation of depth dependent coding artifacts in 3D images. In STEREOSCOPIC DISPLAYS AND APPLICATIONS XIX. (Proceedings of SPIE-IS&T Electronic Imaging). pp. 80307-

Karlsson, L. & Sjöström, M. (2008). Region-of-interest 3D video coding based on depth images. In 2008 3DTV-CONFERENCE : THE TRUE VISION - CAPTURE, TRANSMISSION AND DISPLAY OF 3D VIDEO.. pp. 121--124.

Marx, B. , Kollecker, J. , Lammen, B. , Nordin, J. , Zhang, T. & Sjöström, M. (2008). Distributed Vehicle Simulation - A Student Project in Mechatronics and Distributed Systems. In 9th International Workshop on Research and Education in Mechatronics, Bergamo, Italy, 18-19 September 2008..

Olsson, R. , Sjöström, M. & Xu, Y. (2007). Evaluation of combined pre-processing and H.264-compression schemes for 3D integral images. In Visual Communications and Image Processing 2007, Pts 1 and 2. Bellingham, Wash. : (Proceedings of SPIE - The International Society for Optical Engineering,). pp. 65082C-

Olsson, R. & Sjöström, M. (2007). A depth dependent quality metric for evaluation of coded integral imaging based 3d-images. In Proceedings of 3DTV Conference. New York : . pp. 403--406.

Karlsson, L. , Sjöström, M. & Olsson, R. (2006). Spatio-Temporal Filter for ROI Video Coding. In Proceedings of the 14th European Signal Processing Conference (EUSIPCO 2006) Florence, Italy 4-8.Sept. 2006.

Olsson, R. , Sjöström, M. & Xu, Y. (2006). A combined pre-processing and H.264-compression scheme for 3D integral images. In Proceedings International Conference on Image Processing, Vols 1-7. Atlanta, GA : . pp. 513--516.

Karlsson, L. & Sjöström, M. (2005). A preprocessing approach to ROI Video Coding using Variable Gaussian Filters and Variance in Intensity. In Proceedings Elmar 2005. Zagreb, Croatia : (Proceedings Elmar - International Symposium Electronics in Marine). pp. 65--68.

Karlsson, L. & Sjöström, M. (2005). Improved ROI Video Coding using Variable Gaussian Pre-Filters and Variance in Intensity. In IEEE International Conference on Image Processing 2005, ICIP 2005 : Vol. 2. (Proceedings - International Conference on Image Processing, ICIP). pp. 1817--1820.

Sjöström, M. (2004). Methods for Identification of Preisach Model from Measurements. In PIERS 2004 in Pisa Proceedings. (PIERS Proceedings). pp. 337--340.

Nibbio, N. , Sjöström, M. , Dutoit, B. , Lombard, P. & Taghezou, D. (2000). Losses in HTS Tapes due to AC External Magnetic Field and AC Transport Current. In Applied Superconductivity 1999 : Proceedings of EUCAS 1999, the Fourth European Conference on Applied Superconductivity, Vol. 1. Bristol, UK : . pp. 875--878.

Sjöström, M. (2000). Properties of Smoothing with Time Gating. In Proceedings of the IEEE 2000 International Symposium on Circuits and Systems. (Proceedings - IEEE International Symposium on Circuits and Systems). pp. 707--710.

Schnyder, G. , Rhyner, J. , Politano, D. & Sjöström, M. (2000). Application of High Temperature Superconductivity in Power Systems. In Anwendung der Supraleitung und neuer Isolierstoffe in der elektrischen Verteilung : Proceedings of ETG Tagung, ETH Zürich, 21 March 2000..

Sjöström, M. & Dutoit, B. (1998). Preisach Model Identification from Higher Harmonics. In Proceedings of 1998 International Symposium on Nonlinear Theory and its Applications : Vol. 1.. pp. 275--278.

Dutoit, B. , Stavrev, S. & Sjöström, M. (1998). Bi(2223) Ag sheathed tape characterisation under DC applied magnetic field. In Proceedings of the Seventeenth International Cryogenic Engineering Conference : ICEC 17. Bristol, UK : . pp. 419--422.

Sjöström, M. , Rasmussen, N. , Schönauer, H. & Wildner, E. (1997). Black-box Parametric Estimation Methods for Longitudinal Beam Transfer Function Measurements. In EPAC96 : Fifth European Particle Accelerator Conference, Vol. 2.. pp. 1606--1608.

Djukic, D. , Sjöström, M. & Dutoit, B. (1997). Preisach-type hysteresis modelling in Bi-2223 tapes. In Applied Superconductivity 1997. : Proceedings of EUCAS 1997 Third European Conference on Applied Superconductivity, Vol. 2.. pp. 1409--1412.

Doctoral theses, monographs

Sjöström, M. (2001). Hysteresis Modelling of High Temperature Superconductors. Dis. Lausanne, Switzerland : Swiss Federal Institute of Technology Lausanne, 2001 (PhD Thesis / Lab. of Nonlinear Systems, Communication Systems Dept., Swiss Federal Institute of Technology Lausanne (EPFL), : 2372)

Licentiate theses, monographs

Sjöström, M. (1997). Longitudinal Beam Transfer Function Measurement with Parametric System Identification. Lic. Sth : KTH, 1997 (Trita-S3-SB : 9730)

Manuscripts

Olsson, R. & Sjöström, M. Pseudo video sequence based coding of still 3D integral images

Other

Jaldemark, J. , Anderson, K. , Lindberg, J. O. , Persson Slumpi, T. , Sefyrin, J. , Snyder, K. & Sjöström, M. (2011). Slutrapport delprojekt 3.5.1 Forskning och forskarskolan i e-lärande. Härnösand : Mittuniversitetet.

Sjöström, M. (1992). Monitoring of Liquid Helium Supply for Superconducting Equipment at CERN. Linköping : Linköpings universitet. (LiTH-ISY-EX)

Reports

Sjöström, M. & Gulliksson, M. (2007). Identifiability Analysis of Prandtl-Ishilinskii Hysteresis Model with Saturation - Derivations. (MUCOM technical report )

Karlsson, L. , Olsson, R. & Sjöström, M. (2006). Temporal filter with bilinear interpolation for ROI video coding. Sundsvall : Mid Sweden Univ. Dept. of Information Technology and Media (MUCOM technical report )

Olsson, R. , Sjöström, M. & Xu, Y. (2006). Evaluation of Combined Pre-processing and H.264-compression Schemes for 3D Integral Images. Sundsvall : Mittuniversitetet (MUCOM technical report )

Sjöström, M. , Grilli, F. , Dutoit, B. & Spreafico, S. (2005). Modelling of a three-phase concentric HTS-cable. Sundsvall : Mittuniversitetet (MUCOM technical report )

Schnyder, G. , Rhyner, J. , Politano, D. & Sjöström, M. (2000). Application of High Temperature Superconductivity in Power Systems.

Blas, A. , Hancock, S. , Koscielniak, S. , Lindroos, M. & Sjöström, M. (1999). Evaluation of vector signal analyzer for beam transfer function measurements in PS Booster.

Sjöström, M. , Djukic, D. & Dutoit, B. (1998). Parametrised Preisach Modelling of Hysteresis in High Temperature Superconductors.

Sjöström, M. (1998). Preisach Modelling: Symmetry Implementation and Frequency Analysis. (LANOS-REPORT 1998-002)

Sjöström, M. (1996). Beam Transfer Function Measurements - User Manual.

Sjöström, M. (1996). Some Aspects on Beam Transfer Functions and their Integrations.