Prof. Dr. Ralph Ewerth

Leitung Forschungsgruppe Visual Analytics

E-Mail: ralph.ewerthtibeu

Telefon: +49 511 762 19651

Fax: +49 511 762 14272

Postanschrift: Welfengarten 1 B, 30167 Hannover

Besucheranschrift: Lange Laube 28, 30159 Hannover, Raum: 2.11

Prof. Dr. Ralph Ewerth

Die Forschungsschwerpunkte - mit einem besonderen Fokus auf Forschungsdaten - sind in den Bereichen Visual Analytics, Information and Media Retrieval, sowie Usability angesiedelt. Mehr

Prof. Dr. Ralph Ewerth bietet jedes Semester eine Lehrveranstaltung an der Fakultät für Elektrotechnik und Informatik der Leibniz Universität Hannover an. Des Weiteren betreut die Forschungsgruppe Visual Analytics Labor- sowie Abschlussarbeiten.  Mehr

Internationale Journale, Konferenzen und Workshops (peer-reviewed), sowie Monographien

  • M. Mühling, N. Korfhage, E. Müller, C. Otto, M. Springstein, T. Langelage, U. Veith, R. Ewerth, B. Freisleben: 
    Deep learning for content-based video retrieval in film and television production. 
    In Multimedia Tools and Applications, 1-26, 2017. 
    https://link.springer.com/article/10.1007/s11042-017-4962-9

  • C. A. Henning, R. Ewerth:
    Estimating the Information Gap between Textual and Visual Representations 
    In: Proceedings of ACM International Conference on Multimedia Retrieval (ICMR), Bucharest, Romania, ACM, 2017, 14-22. ACM ICMR 2017 
    “Best Multimodal Paper Award” 
    https://doi.org/10.1145/3078971.3078991

  • R. Ewerth, M. Springstein, E. Müller, A. Balz, J. Gehlhaar, T. Naziyok, K. Dembczyński, E. Hüllermeier:
    Estimating Relative Depth in Single Images via Rankboost
    In: Proceedings of IEEE 18th International Conference on Multimedia & Expo (ICME), Hongkong, IEEE Press, 2017, zur Veröffentlichung angenommen

  • E. Müller, M. Springstein, R. Ewerth: 
    "When was this picture taken?" – Image Date Estimation in the Wild
    In: Proceedings of 39th European Conference on Information Retrieval (ECIR), Aberdeen, UK, 2017
    https://link.springer.com/chapter/10.1007/978-3-319-56608-5_57

  • R. Ewerth, M. Springstein, L.A. Phan-Vogtmann, J. Schütze: 
    "Are Machines Better in Image Tagging?" – A User Study Adds to the Puzzle
    In: Proceedings of 39th European Conference on Information Retrieval (ECIR), Aberdeen, UK, 2017
    https://link.springer.com/chapter/10.1007/978-3-319-56608-5_15
  • M. Springstein, R. Ewerth:
    On the Effects of Spam Filtering and Incremental Learning for Web-supervised Visual Concept Classification In: Proceedings of ACM International Conference on Multimedia Retrieval (ICMR), New York, ACM, 2016, 377-380 
    http://dl.acm.org/citation.cfm?id=2912072

  • E. Müller, C. Otto, R. Ewerth: 
    Semi-supervised Identification of Rarely Appearing Persons in Video
    In: Proceedings of ACM International Conference on Multimedia Retrieval (ICMR), New York, ACM, 2016, 381-384
    http://dl.acm.org/citation.cfm?id=2912073

  • M. Mühling, M. Meister, N. Korfhage, J. Wehling, A. Hörth, R. Ewerth, B. Freisleben: 
    Content-Based Video  Retrieval in Historical Collections of the German Broadcasting  Archive
    In: Theory and Practice of Digital Libraries, TPDL, Hannover, 2016, 67-78

  • M. Mühling, R. Ewerth, B. Freisleben:
    Improving Cross-Domain Concept Detection via Object-based Features
    In: Proceedings of 18th International Conference on Computer Analysis of Images and Patterns, Malta, Springer, 2015, 359-370

  • R. Ewerth, A. Balz, J. Gehlhaar , K. Dembczyński, E. Hüllermeier: 
    Depth Estimation in Monocular Images: Quantitative versus Qualitative Approaches
    In: Proceedings of 25th Workshop on Computational Intelligence, Dortmund, KIT Scientific Publishing, 2015, 235-239

  • R. Ewerth, K. Ballafkir, D. Seiler, M. Mühling, B. Freisleben:
    Long-Term Web-Supervised Learning via Random Savannas for Concept Detection in Images
    In: IEEE Transactions on Multimedia, Special Issue on “Learning Semantics from Web Ressources”, Volume 14 Issue 4, Part 1, 2012, 1008-1020

  • R. Ewerth, M. Mühling, B. Freisleben:
    Robust Video Content Analysis via Transductive Learning
    In: ACM Transactions on Intelligent Systems and Technology, Special Issue on Intelligent Multimedia Systems and Technology Part II, Volume 3, No. 3, Article No. 41, 2012, 1-26

  • M. Mühling, R. Ewerth, J. Zhou, B. Freisleben:
    Multimodal Video Concept Detection via Bag of Auditory Words and Multiple Kernel Learning
    In: Proceedings of 18th International Conference on MultiMedia Modelling (MMM 2012), Klagenfurt, Austria, Lecture Notes on Computer Science, Volume 7131, Springer, 2012, 40-50

  • P. Abend, T. Thielmann, R. Ewerth, D. Seiler, M. Mühling, J. Döring, M. Grauer, B. Freisleben: 
    Geobrowsing Behaviour in Google Earth – A Semantic Video Content Analysis of On-screen Navigation
    In: Proceedings of 2012 Geoinformatik Forum, 2012, 2-13

  • M. Mühling, R. Ewerth, B. Shi, B. Freisleben: 
    Multi-class Object Detection via Hough Forests Using Local Histograms of Visual Words
    In: Proceedings of 14th Int’l Conference on Computer Analysis of Images and Patterns (CAIP), Seville, Spain, Lecture Notes on Computer Science (LNCS), Volume 6854, Springer, 2011, 386-393

  • M. Mühling, R. Ewerth, B. Shi, B. Freisleben: 
    On the Spatial Extents of SIFT Descriptors for Visual Concept Detection
    In: Proceedings of 8th Int’l Conference on Computer Vision Systems (ICVS), Sophia Antipolis, Lecture Notes on Computer Science (LNCS), Volume 6962, Springer, 2011, 71-80

  • D. Seiler, E. Juhnke, R. Ewerth, M. Grauer, B. Freisleben: 
    Efficient Data Transmission Between Multimedia Web Services via Aspect-Oriented Programming
    In: Proceedings of ACM International Conference on Multimedia Systems (MMSys 2011), San Jose, USA, ACM Press, 2011, 93-104

  • E. Juhnke, D. Seiler, R. Ewerth, M. Smith, B. Freisleben: 
    Request/Response Aspects for Web Services
    In: Proceedings of 23rd International Conference on Advanced Information Systems Engineering (CAiSE) 2011, London, United Kingdom, Lecture Notes on Computer Science (LNCS), Volume 6741, Springer, 627-641

  • P. Abend, T. Thielmann, R. Ewerth, D. Seiler, M. Mühling, J. Döring, M. Grauer, B. Freisleben: 
    Geobrowsing the Globe: A Geovisual Analysis of Google Earth Usage
    In: Proceedings of Linking GeoVisualization with Spatial Analysis and Modeling (GeoViz) 2011, Hamburg, 1-3

  • T. Stadelmann, Y. Wang, M. Smith, R. Ewerth, B. Freisleben:
    Rethinking Algorithm Design and Development in Speech Processing
    In: Proceedings of 20th International Conference on Pattern Recognition, Istanbul, Turkey, 2010, 4476-4479

  • R. Ewerth, J. P. Harries, B. Freisleben: 
    Mobile OCR on the iPhone for Different Types of Text Documents
    In: Proceedings of 2nd International Workshop on Mobile Multimedia Processing (in conjunction with 20th International Conference on Pattern Recognition), Istanbul, Turkey, 2010, 1-8

  • R. Ewerth, B. Freisleben: 
    Performance Prediction for Unsupervised Video Indexing
    In: Proceedings of 13th International Conference on Computer Analysis of Images and Patterns, Münster, 2009, 1036-1043

  • R. Ewerth, B. Freisleben:
    Unsupervised Detection of Gradual Shot Changes with Motion-Based False Alarm Removal
    In: Proceedings of 8th International Conference on Advanced Concepts for Intelligent Vision Systems, Bordeaux, 2009, 253-264

  • M. Mühling, R. Ewerth, B. Freisleben:
    Improving Semantic Video Retrieval via Object-Based Features
    In: Proceedings of 3rd IEEE International Conference on Semantic Computing, San Diego, USA, 2009, 109-115

  • M. Schwalb, R. Ewerth, B. Freisleben:
    Fast Motion Estimation on Graphics Hardware for H.264 Video Encoding
    In: IEEE Transactions on Multimedia, Volume 11, No. 1, January 2009, 1-10

  • S. Heinzl, D. Seiler, E. Juhnke, T. Stadelmann, R. Ewerth, M. Grauer, B. Freisleben:
    A Scalable Service-Oriented Architecture for Multimedia Analysis, Synthesis, and Consumption
    In: International Journal of Web and Grid Services, Inderscience Publishers, Vol. 5, Issue 3, 2009, 219-260

  • R. Ewerth: 
    Robust Video Content Analysis via Transductive Learning Methods 
    Dissertation. Philipps-Universität Marburg, Germany, 2008. 
    Südwestdeutscher Verlag für Hochschulschriften, Stuttgart, ISBN: 978-3-8381-0120-0 
    Online: http://archiv.ub.uni-marburg.de/diss/z2008/0478/

  • D. Seiler, S. Heinzl, E. Juhnke, R. Ewerth, M. Grauer, B. Freisleben:
    Efficient Data Transmission in Service Workflows for Distributed Video Content Analysis
    Best Paper Candidate. In: Proceedings of the 6th International Conference on Advances in Mobile Computing & Multimedia (MoMM2008), ACM and OCG Book Series, 2008, 7-14

  • R. Ewerth, M. Mühling, B. Freisleben:
    Self-Supervised Learning of Face Appearances in TV Casts and Movies
    Invited Paper (Best papers from IEEE International Symposium on Multimedia ‘06): International Journal on Semantic Computing, World Scientific, June 2007, 185-204

  • R. Ewerth, B. Freisleben:
    Adapting Appearance Models of Semantic Concepts for a Particular Video via Transductive Learning
    In: Proceedings of 13th ACM International Workshop on Multimedia Information Retrieval, Augsburg, Germany, ACM Press, 2007, 187-196

  • R. Ewerth, M. Schwalb, P. Tessmann, B. Freisleben:
    Segmenting Moving Objects in the Presence of Camera Motion
    In: Proceedings of 14th International Conference on Image Analysis and Processing Modena, Italy, IEEE Press, 2007, 819-824

  • R. Ewerth, B. Freisleben:
    Semi-Supervised Learning for Semantic Video Retrieval
    In: Proceedings of ACM International Conference on Image and Video Retrieval (CIVR), Amsterdam, The Netherlands, ACM Press, 2007, 154-161

  • R. Ewerth, M. Schwalb, B. Freisleben:
    Using Depth Features to Retrieve Monocular Video Shots
    In: Proceedings of ACM International Conference on Image and Video Retrieval (CIVR), Amsterdam, The Netherlands, ACM Press, 2007, 210-217

  • M. Mühling, R. Ewerth, T. Stadelmann, B. Freisleben, R. Weber, K. Mathiak
    Semantic Video Analysis for Psychological Research on Violence in Computer Games
    In: Proceedings of ACM International Conference on Image and Video Retrieval (CIVR), Amsterdam, The Netherlands, ACM Press, 2007, 611-618

  • R. Ewerth, M. Mühling, B. Freisleben:
    Self-Supervised Learning of Face Appearances in TV Casts and Movies 
    Best Paper Candidate. 
    In: Proceedings of the 6th IEEE International Symposium on Multimedia 2006, San Diego, USA, IEEE Press, 2006, 78-85

  • R. Ewerth, B. Freisleben: 
    Self-Supervised Learning for Robust Video Indexing
    In: IEEE 7th International Conference on Multimedia & Expo, Toronto, Canada, IEEE Press, 2006, 1749-1752

  • M. Smith, B. Klose, R. Ewerth, T. Friese, M. Engel, B. Freisleben:
    Runtime Integration of Reconfigurable Hardware in Service-Oriented Grids
    In: Proceedings of the IEEE International Conference on Web Services (ICWS), Chicago, USA, IEEE Press, 2006, 945-948

  • R. Ewerth, T. Friese, M. Grube, B. Freisleben: 
    Grid Services for Distributed Video Cut Detection
    In: Proceedings of the 6th IEEE Int. Symposium on Multimedia Software Engineering, Miami, USA, IEEE Press, 2004, 164-168

  • J. Gllavata, R. Ewerth, B. Freisleben: 
    A Text Detection, Localization and Segmentation System for OCR in Images
    In: Proceedings of the 6th IEEE Int. Symposium on Multimedia Software Engineering, Miami, USA, IEEE Press, 2004, 310-317

  • J. Gllavata, R. Ewerth, B. Freisleben:
    Tracking Text in MPEG Videos
    In: Proceedings of 12th ACM Conference on Multimedia, New York City, USA, ACM Press, 2004, 240-243

  • R. Ewerth, B. Freisleben:
    Video Cut Detection without Thresholds
    In: Proc. of 11th Workshop on Signals, Systems and Image Processing, Poznan, Poland, PTETiS, 2004, 227-230

  • R. Ewerth, B. Freisleben:
    Improving Cut Detection in MPEG Videos by GOP-Oriented Frame Difference Normalization
    In: Proceedings of 17th International Conference on Pattern Recognition, Vol. 2, Cambridge, UK, IAPR, IEEE Press, 2004, 807-810

  • J. Gllavata, R. Ewerth, B. Freisleben:
    Text Detection in Images Based on Unsupervised Classification of High-Frequency Wavelet Coefficients 
    In: Proc.of 17th International Conf. on Pattern Recognition, Vol. 1, Cambridge, UK, IAPR, IEEE Press, 2004, 425-428

  • R. Ewerth, M. Schwalb, P. Tessmann, B. Freisleben:
    Estimation of Arbitrary Camera Motion in MPEG Videos
    In: Proceedings of 17th International Conference on Pattern Recognition, Vol. 1, Cambridge, UK, IAPR, IEEE Press, 2004, 512-515

  • J. Gllavata, R. Ewerth, T. Stefi, B. Freisleben:
    Unsupervised Text Segmentation Using Color and Wavelet Features
    In: Proceedings of the 3rd International Conference on Image and Video Retrieval, Dublin, Ireland, LNCS 3115, Springer-Verlag, 2004, 216-224

  • J. Gllavata, R. Ewerth, B. Freisleben:
    Finding Text in Images via Local Thresholding
    In: Proceedings of the IEEE International Symposium on Signal Processing and Information Technology (ISSPIT 2003), Darmstadt, Germany, IEEE Press, 2003, 539-542

  • R. Ewerth, B. Freisleben:
    Frame Difference Normalization: an Approach to Reduce Error Rates of Cut Detection Algorithms for MPEG Videos
    In: Proceedings of the IEEE International Conference on Image Processing, Vol. II, Barcelona, Spain, IEEE Press, 2003, 1009-1012

  • J. Gllavata, R. Ewerth, B. Freisleben:
    A Robust Algorithm for Text Detection in Images
    In: Proceedings of the 3rd International Symposium on Image and Signal Processing and Analysis, Rome, Italy, 2003, 611-616

                    National Conferences and Workshops (peer-reviewed)

                    • D. Seiler, R. Ewerth, S. Heinzl, T. Stadelmann, M. Mühling, B. Freisleben, M. Grauer: 
                      Eine service-orientierte Grid-Infrastruktur zur Unterstützung medienwissenschaftlicher Filmanalyse 
                      In: Proceedings of GeNeMe Workshop, Gemeinschaften in neuen Medien, Dresden, 2009

                    National Journals & Conferences (Abstract was peer-reviewed)

                    • M. Mühling, M. Meister, R. Ewerth, B. Freisleben:
                      Automatische Videoanalyse zur Erschließung von historischem TV-Material 
                      In: info7 MEDIEN | ARCHIVE | INFORMATION, Jahrgang 30, Heft 2, 2015, Münster, 23-26

                    • R. Ewerth, B. Freisleben: 
                      Cloud-basierte Softwaredienste zur Suche in Bild- und Videoarchiven 
                      In: FKT, Fachzeitschrift für Film, Fernsehen und Kino, Germany, 11/2014, 569-574

                    TRECVID Evaluations (Int’l Workshop, presuming a system submission)

                    International and National Journals, Book Chapters, Conferences and Workshops (without peer-review)

                    • R. Ewerth, B. Freisleben:
                      Automatic Classification of State Heads and Common People?
                      In: Ludes, P. & Herzog, O. (ed.): Algorithms of Power – Key Invisibles, LIT Verlag, Münster, Germany, 2011, 93-114

                    • R. Ewerth, M. Mühling, T. Stadelmann, D. Seiler, B. Freisleben:
                      Multimedia Computing
                      In: Research Report, High-Performance Computing in Hessen 2009, Darmstadt, 140-143

                    • R. Ewerth, M. Mühling, T. Stadelmann, J. Gllavata, M. Grauer, B. Freisleben:
                      Videana: A Software Tool for Scientific Film Studies
                      In: Proceedings of International Workshop on Digital Tools in Film Studies, Siegen, Transcript Verlag, Bielefeld, Germany, 2009, 101-116

                    • R. Ewerth, B. Freisleben:
                      Verfahren zur automatischen Annotation und Erschließung von Videomaterial
                      In: „Benutzerfreundlich – rationell – standardisiert. Aktuelle Anforderungen an archivische Erschließung und Findemittel“, Hrsg. Frank M. Bischoff, Tagungsband des 11. Archivwissenschaftlichen Kolloquiums 2006, Archivschule Marburg, 2007, 259-280

                    • R. Ewerth, B. Freisleben:
                      Computerunterstützte Filmanalyse mit Videana
                      In: Augen-Blick: Hefte zur Medienwissenschaft, Heft 39, Schüren-Verlag, 2007, 54-66

                    • R. Ewerth, B. Freisleben:
                      Gesichtsdetektion und -erkennung in Bildern für die medienwissenschaftliche Analyse
                      In: „Gesichtsdetektionen in den Medien des 20. Jahrhunderts“, W. Beilenhoff, W. Hülk, K. Kreimeier, und M. Erstic (eds.), Universi Verlag, 2006, 156-172

                    • R. Ewerth, J. Gllavata, M. Gollnick, F. Mansouri, E. Papalilo, R. Sennert, J. Wagner, B. Freisleben, M. Grauer:
                      Methoden und Werkzeuge zur rechnergestützten medienwissenschaftlichen Analyse
                      In: Siegener Periodicum zur Internationalen Empirischen Literaturwissenschaft, 20, H. 2, 2003, 306-320