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Bernhard Quehl

Hasso-Plattner-Institut für
Softwaresystemtechnik GmbH

Universität Potsdam
Prof.-Dr.-Helmert-Str. 2-3
D-14482 Potsdam


office:      B-1.3/C-E.13
phone:     +49 (0)331-5509-548
fax:         +49 (0)331-5509-325

email:     bernhard.quehl(at)hpi.uni-potsdam.de




Research Interests


Semantic Web, Sematic Information/Multimedia Retrieval, Video Search Engines, MPEG-7, Web-2.0, Collaborative Annotation, Text/Image-Processing.




D-Werft - Linked Open Data based data integration for the value creation process in the media industry - funded by the German Federal Ministry of Education and Research (starting 03/2014)


TIBAV-Portal Gottfried-Leibnitz-Universität Hannover, a project with Technische Informationsbibliothek Hannover (TIB).

SemexSEMEX - Semantic Media Explorer is a demonstrator that combines the latest media analysis processes to provides optimal access to video content (technical DEMO).

MediaglobeMEDIAGLOBE - the digital archive is part of the THESEUS research program initiated by the German Federal Ministry of Economy and Technology (BMWi). MEDIAGLOBE deals with digitization, analysis, and semantic retrieval of historical, documentary audiovisual content.


 In Journal:

  • Haojin Yang, Bernhard Quehl and Harald Sack, "A Framework for Improved Video Text Detection and Recognition", Int. Journal of MULTIMEDIA TOOLS AND APPLICATIONS (MTAP), Print ISSN:1380-7501, online ISSN:1573-7721, Publicher: springer Netherlands, DOI: 10.1007/s11042-011-0971-2 [copy PDF][citation BibTex]

   In Conferences:

  • Bernhard Quehl, Haojin Yang, Harald Sack, "Improving text recognition by distinguishing scene and overlay text" in Proceedings of 7th International Conference on Machine Vision (ICMV 2014), Milan Italy, Dec. 19-21, 2014. [submitted]
  • Haojin Yang, Bernhard Quehl, Harald Sack, "A skeleton based binarization approach for video text recognition", 13th International Workshop on Image analysis for multimedia interactive services (WIAMIS 2012), 23rd - 25th May 2012, IEEE Press, Dublin Ireland. [copy PDF] [poster] [citation BibTex]
  • C. Hentschel, J. Hercher, M. Knuth, J. Osterhoff, B. Quehl, H. Sack, N. Steinmetz, J. Waitelonis, H-J.Yang: "Open Up Cultural Heritage in Video Archives with Mediaglobe", 12th International Conference on Innovative Internet Community Services (I2CS 2012), June 13-15, 2012, Trondheim (Norway) [copy PDF] [citation BibTex] (best paper award)
  • Haojin Yang, Bernhard Quehl and Harald Sack, "Text detection in video images using adaptive edge detection and stroke width verification", 19th International Conference on Systems, Signals and Image Processing (IWSSIP 2012), IEEE Press, Vienna, Austria, April. 11-13, 2012 [copy PDF] [citation BibTex]


Teaching Assistance

SS 2014

SS 2013

  • Seminar (Bachelor): Multimedia Analyse Technologien (Blog)

SS 2012

  • Multimedia Analysis (Bachelor seminar)

WS 2011/12

  • Large Scale Processing for Multimedia Analysis (Master seminar, 4 SWS)

SS 2011

  • Multimedia Analysis (Bachelor seminar)

SS 2010

  • Multimedia Analysis (Bachelor seminar)