>> Publications (updated June 2017)

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>> Invited Papers   (go to top)

  1. Matias Bjørling, Philippe Bonnet, Luc Bouganim, Björn Þór Jónsson.
    uFLIP: Understanding the Energy Consumption of Flash Devices.
    Data Engineering Bulletin, 33(4), December 2010.

  2. Björn Þór Jónsson, Herwig Lejsek, Laurent Amsaleg.
    The Eff2 Project: Towards Efficient and Effective Support for Large-Scale High-Dimensional Indexing.
    In 5th International Workshop on Content-Based Multimedia Indexing (CBMI), Bordeaux, France, June 2007.

>> Refereed Journal Papers   (go to top)

  1. Arnar Ólafsson, Björn Þór Jónsson, Laurent Amsaleg, Herwig Lejsek.
    Dynamic behavior of balanced NV-trees.
    Multimedia Systems, 17(2), March, 2011.

  2. Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
    NV-tree: An Efficient Disk-Based Index for Approximate Search in Very Large High-Dimensional Collections.
    IEEE Transactions on Pattern Analysis and Machine Intelligence, 31(5), May 2009.

  3. Björn Þór Jónsson, María Arinbjarnar, Bjarnsteinn Þórsson, Michael J. Franklin, Divesh Srivastava.
    Performance and Overhead of Semantic Cache Management.
    ACM Transactions on Internet Technology, 6(3), August, 2006.

>> Refereed Conference Publications   (go to top)

  1. Ivan Luiz Picoli, Carla Villegas, Björn Þór Jónsson, Luc Bouganim, Philippe Bonnet.
    uFLIP-OC: Understanding Flash I/O Patterns on Open-Channel Solid State Drives.
    In Proceedings of the ACM SIGOPS Asia-Pacific Workshop on Systems (APSys), Mumbai, India, September, 2017.

  2. Haukur Pálmason, Björn Þór Jónsson, Markus Schedl, Peter Knees.
    Genre Classification Revisited: An In-Depth Examination Guided by Music Experts.
    In Proceedings of the International Symposium on Computer Music Multidisciplinary Research (CMMR), Porto, Portugal, September, 2017.

  3. Gylfi Þór Guðmundsson, Laurent Amsaleg, Björn Þór Jónsson, Michael J. Franklin..
    Best Paper Nominee: Towards Engineering a Web-Scale Multimedia Service: A Case Study Using Spark.
    In Proceedings of the ACM Multimedia Systems Conference (MMSys), Taipei, Taiwan, June, 2017.

  4. Björn Þór Jónsson, Marta Kristín Lárusdóttir, Mats Daniels, Alison Clear, Tony Clear, Roger McDermott.
    Aligning Quality Assurance at the Course Unit and Educational Program Levels.
    In Proceedings of the 46th Annual Frontiers in Education Conference (FIE), Erie, PA, USA, October, 2016.

  5. Jan Zahálka, Stevan Rudinac, Björn Þór Jónsson, Dennis C. Koelma, Marcel Worring.
    Interactive Multimodal Learning on 100 Million Images.
    In Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR), New York, NY, USA, June, 2016.

  6. Björn Þór Jónsson, Laurent Amsaleg, Herwig Lejsek.
    SSD Technology Enables Dynamic Maintenance of Persistent High-Dimensional Indexes.
    In Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR), New York, NY, USA, June, 2016.

  7. Björn Þór Jónsson, Marcel Worring, Jan Zahálka, Stevan Rudinac, Laurent Amsaleg.
    Ten Research Questions for Scalable Multimedia Analytics.
    In Proceedings of the International Conference on MultiMedia Modeling (MMM), Special Session on Perspectives on Multimedia Analytics, Miami, FL, USA, January, 2016.

  8. Stefán Freyr Stefánsson, Björn Þór Jónsson.
    Using Range Information to Reduce Local Descriptor Computations: A Case Study.
    In Proceedings of the 2nd International Conference on Signal Processing and Integrated Networks (SPIN), Uttar Pradesh, India, 2015.

  9. Silas Luttenberger, Reiner Creutzburg, Björn Þór Jónsson.
    Presentation of a Web Service for Video Identification Based on Videntifier Techniques.
    In SPIE Conference on Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications, San Francisco, CA, USA, February, 2015.

  10. Björn Þór Jónsson, Grímur Tómasson, Hlynur Sigurþórsson, Áslaug Eiríksdóttir, Laurent Amsaleg, Marta Kristín Lárusdóttir.
    A Multi-Dimensional Data Model for Personal Photo Browsing.
    In International Conference on MultiMedia Modeling (MMM), Sydney, Australia, January, 2015.

  11. Björn Þór Jónsson, Áslaug Eiríksdóttir, ”lafur Waage, Grímur Tómasson, Hlynur Sigurþórsson, Laurent Amsaleg.
    M3 + P3 + O3 = Multi-D Photo Browsing (demo).
    In 20th Anniversary International Conference on MultiMedia Modeling (MMM), Dublin, Ireland, January, 2014.

  12. Gylfi Þór Guðmundsson, Laurent Amsaleg, Björn Þór Jónsson.
    Distributed High-Dimensional Index Creation using Hadoop, HDFS and C++.
    In Tenth International Workshop on Content-Based Multimedia Indexing (CBMI), Annecy, France, June, 2012.

  13. Grímur Tómasson, Hlynur Sigurþórsson, Kristján Rúnarsson, Gísli Kristján Ólafsson, Björn Þór Jónsson, Laurent Amsaleg.
    Using PhotoCube as an Extensible Demonstration Platform for Advanced Image Analysis Techniques (demo).
    In Tenth International Workshop on Content-Based Multimedia Indexing (CBMI), Annecy, France, June, 2012.

  14. Gylfi Þór Guðmundsson, Laurent Amsaleg, Björn Þór Jónsson.
    Impact of Storage Technology on the Efficiency of Cluster-Based High-Dimensional Index Creation.
    In Second International Workshop on Flash-based Database Systems (FlashDB),
    co-located with DASFAA, Busan, South Korea, April, 2012.

  15. Herwig Lejsek, Björn Þór Jónsson, Laurent Amsaleg.
    NV-Tree: Nearest Neighbours at the Billion Scale.
    In ACM International Conference on Multimedia Retrieval (ICMR), Trento, Italy, April, 2011.

  16. Grímur Tómasson, Hlynur Sigurþórsson, Björn Þór Jónsson, Laurent Amsaleg.
    PhotoCube: Effective and Efficient Multi-Dimensional Browsing of Personal Photo Collections (demo).
    In ACM International Conference on Multimedia Retrieval (ICMR), Trento, Italy, April, 2011.

  17. Kristleifur Daðason, Herwig Lejsek, Ársæll Þór Jóhannsson, Björn Þór Jónsson, Laurent Amsaleg.
    GPU Acceleration of Eff2 Descriptors using CUDA.
    In 18th ACM International Conference on Multimedia, ACM MM 2010, Firenze, Italy, October 2010.

  18. Herwig Lejsek, Hrönn Þormóðsdóttir, Friðrik Heiðar Ásmundsson, Kristleifur Daðason, Ársæll Þór Jóhannsson, Björn Þór Jónsson, Laurent Amsaleg.
    VidentifierTM Forensic: Large-Scale Video Identification in Practise.
    In Workshop on Multimedia in Forensics, Security and Intelligence, MiFor 2010,
    co-located with 18th ACM International Conference on Multimedia, ACM MM 2010, Firenze, Italy, October 2010.

  19. Gylfi Þór Guðmundsson, Björn Þór Jónsson, Laurent Amsaleg.
    A Large-Scale Performance Study of Cluster-Based High-Dimensional Indexing.
    In Workshop on Very-Large-Scale Multimedia Corpus, Mining and Retrieval, VLS-MCM,
    co-located with 18th ACM International Conference on Multimedia, ACM MM 2010, Firenze, Italy, October 2010.

  20. Matias Bjørling, Lionel Le Folgoc, Ahmed Mseddi, Philippe Bonnet, Luc Bouganim, Björn Þór Jónsson.
    Performing Sound Flash Device Measurements: The uFLIP Experience (demo).
    In Proceedings of the ACM SIGMOD International Conference , Indianapolis, IN, USA, June, 2010.

  21. Herwig Lejsek, Friðrik Heiðar Ásmundsson, Kristleifur Daðason, Ársæll Þór Jóhannsson, Björn Þór Jónsson, Laurent Amsaleg.
    VidentifierTM Forensic: A New Law Enforcement Service for Automatic Identification of Illegal Video Material.
    In Workshop on Multimedia in Forensics, Security and Intelligence, MiFor,
    co-located with 17th ACM International Conference on Multimedia, ACM MM 2009, Beijing, P. R. China, October 2009.

  22. Friðrik Heiðar Ásmundsson, Herwig Lejsek, Kristleifur Daðason, Björn Þór Jónsson, Laurent Amsaleg.
    Videntifier Forensic: Robust and Efficient Detection of Illegal Multimedia (demo).
    In 17th ACM International Conference on Multimedia, ACM MM 2009, Beijing, P. R. China, October 2009.

  23. Stefán Freyr Stefánsson, Björn Þór Jónsson, Kristinn R. Thórisson.
    A YARP-Based Architectural Framework for Robotic Vision Applications.
    In Proceedings of the International Conference on Computer Vision Theory and Applications (VISAPP), Lissabon, Portugal, February, 2009.

  24. Luc Bouganim, Björn Þór Jónsson, Philippe Bonnet.
    Best Paper Award: uFLIP: Understanding Flash IO Patterns.
    In Proceedings of the Fourth Biennial Conference on Innovative Data Systems (CIDR), Asilomar, CA, USA, January, 2009.

  25. Arnar Ólafsson, Björn Þór Jónsson, Laurent Amsaleg.
    Dynamic Behavior of Balanced NV-Trees.
    In 6th International Workshop on Content-Based Multimedia Indexing, CBMI'08, London, England, June 2008.

  26. Kristleifur Daðason, Herwig Lejsek, Friðrik Heidar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
    Eff2 Videntifier: Identifying Pirated Videos in Real-Time (demonstration).
    In 15th ACM International Conference on Multimedia, ACM MM 2007, Augsburg, Germany, September 2007.

  27. Kári Harðarson, Björn Þór Jónsson.
    Breaking out of the Shoebox: Towards Having Fun with Digital Images.
    In Proceedings of the Third International Workshop on Computer Vision Meets Databases (CVDB 2007),
    co-located with ACM SIGMOD International Conference on Management of Data, Beijing, China, June, 2007.

  28. Herwig Lejsek, Friðrik Heidar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
    Scalability of Local Image Descriptors: A Comparative Study.
    In 14th ACM International Conference on Multimedia, ACM MM 2006, Santa Barbara, California, USA, October 2006.

  29. Herwig Lejsek, Friðrik Heidar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
    Blazingly Fast Image Copyright Enforcement (demo).
    In 14th ACM International Conference on Multimedia, ACM MM 2006, Santa Barbara, California, USA, October 2006.

  30. Árni Már Jónsson, Björn Þór Jónsson.
    Towards pB+-trees in the Field: Implementation Choices and Performance.
    In Proceedings of the First International Workshop on Performance and Evaluation of Data Management Systems (EXPDB),
    co-located with ACM SIGMOD International Conference on Management of Data, Chicago, IL, June, 2006.

  31. Sigurður Holdahl Einarsson, Ragnheiður Ýr Grétarsdóttir, Björn Þór Jónsson, Laurent Amsaleg.
    The Eff2 Image Retrieval System Prototype.
    In IASTED International Conference on Databases and Applications, DBA 2005, Innsbruck, Austria, 2005.

  32. Herwig Lejsek, Friðrik Heiðar Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
    Efficient and Effective Image Copyright Protection.
    In BDA 2005 Conference, St. Malo, France, October, 2005.

  33. Rut Sigurðardóttir, Hlynur Hauksson, Björn Þór Jónsson, Laurent Amsaleg.
    A Case Study of the Quality vs. Time Trade-off for Approximate Image Descriptor Search.
    In IEEE International Workshop on Managing Data for Emerging Multimedia Applications, EMMA 2005,,
    co-located with IEEE Conference on Data Engineering, ICDE 2005, Tokyo, Japan, April 2005.

  34. Björn Þór Jónsson, Michael J. Franklin, Divesh Srivastava.
    Interaction of Query Evaluation and Buffer Management for Information Retrieval.
    In Proceedings of the ACM SIGMOD International Conference on Management of Data, Seattle, WA, USA, June, 1998.

  35. Ugur Cetintemel, Björn Þór Jónsson, Michael J. Franklin, C. Lee Giles, Divesh Srivastava.
    Evaluating Answer Quality/Efficiency Tradeoffs.
    In Proceedings of the KRDB Workshop,
    co-located with ACM SIGMOD International Conference on Management of Data, Seattle, WA, USA, June, 1998.

  36. Shaul Dar, Michael J. Franklin, Björn Þór Jónsson, Divesh Srivastava, Michael Tan.
    Semantic Data Caching and Replacement.
    In Proceedings of 22nd International Conference on Very Large Data Bases, Bombay, India, September, 1996.

  37. Michael J. Franklin, Björn Þór Jónsson, Donald Kossmann.
    Performance Tradeoffs for Client-Server Query Processing.
    In Proceedings of the ACM SIGMOD International Conference on Management of Data, Montreal, Canada, June, 1996.

>> Editorial Work   (go to top)

  1. Laurent Amsaleg, Gylfi Þór Guðmundsson, Cathal Gurrin, Björn Þór Jónsson, Shin'ichi Satoh.
    Proceedings of the 23rd International Conference on MultiMedia Modeling, MMM 2017.
    Reykjavík, Iceland, January 2017.

  2. Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria.
    Proceedings of the 3rd International Workshop on Computer Vision meets Databases, CVDB'07.
    ACM, Beijing, P. R. China, June 2007.

  3. Harald Kosch, Laurent Amsaleg, Eric J. Pauwels, Björn Þór Jónsson.
    Topic 11 Distributed and High-Performance Multimedia.
    In Euro-Par, 2007.

  4. Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria.
    Multimedia Tools and Applications, Special Issue. No 3, 2006.

  5. Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria.
    Proceedings of the Second ACM International Workshop on Computer Vision meets Databases, CVDB'05.
    ACM, Baltimore, Maryland, USA, June 2005.

  6. Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria.
    Proceedings of the First International Workshop on Computer Vision meets Databases, CVDB'04.
    ACM, Paris, France, June 2004.

>> Patent Applications   (go to top)

  1. Herwig Lejsek, Friðrik H. Ásmundsson, Kristleifur Daðason, Björn Þór Jónsson, Laurent Amsaleg.
    Method of Recognition of Multimedia Segments by Storage of Local Descriptors in a Database. December, 2008.

  2. Herwig Lejsek, Friðrik H. Ásmundsson, Björn Þór Jónsson, Laurent Amsaleg.
    Data Mining using an Index Tree Created by Recursive Projection of Data Points on Random Lines. June, 2006.

>> Other Selected Publications   (go to top)

  1. Björn Þór Jónsson, Cathal Gurrin, Klaus Schoeffmann.
    Report from the MMM Special Session Perspectives on Multimedia Analytics.
    ACM SIGMM Records, 8(2), April, 2016.

  2. Björn Þór Jónsson.
    SIGMOD 2009 Best Demonstrations Competition.
    SIGMOD Record, 38(3), September, 2009.

  3. Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria.
    Introduction to special issue on Computer Vision meets Databases.
    Multimedia Tools and Applications, 38(2):185-186, 2008.

  4. Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria.
    Report from the 3rd International Workshop on Computer Vision Meets Databases, CVDB'07.
    SIGMOD Record, 37(1), March 2008.

  5. Laurent Amsaleg, Björn Þór Jónsson, Vincent Oria.
    Report from the First International Workshop on Computer Vision meets Databases, CVDB'04.
    SIGMOD Record, 34(1), March 2005.

  6. Björn Þór Jónsson.
    In Memory of Gísli R. Hjaltason.
    SIGMOD Record, 32(3), September, 2003.