Vasileios Mezaris
Electrical and Computer Engineer, Ph.D.
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Dr. Vasileios Mezaris is a Senior Researcher with the Information Technologies Institute / Centre for Research and Technology Hellas, Thessaloniki, Greece, since June 2007, and since May 2018 he is a Research Director (Senior Researcher Grade A). He leads a group of researchers working on multimedia understanding and artificial intelligence; in particular, on image and video analysis and annotation, machine learning and deep learning for multimedia understanding and big data analytics, multimedia indexing and retrieval, and applications of multimedia understanding and artificial intelligence in specific domains (including TV broadcasting and news, education and culture, medical / ecological / business data analysis).

Dr. Mezaris has co-authored more than 40 papers in refereed journals, 15 book chapters, 150 papers in international conferences, and 3 patents. He serves as Associate Editor for the IEEE Signal Processing Letters (2016-present) and the IEEE Transactions on Multimedia (2012-2015 and 2018-present), and serves regularly as a reviewer for many international journals and conferences. He has participated in many research projects, currently being the Coordinator of the EC H2020 research projects InVID (2016-2018) and MOVING (2016-2019). He is a Senior Member of the IEEE.

NEWS
(Oct. 2018) The InVID Verification Plugin (as of Sept. 2018 in version v0.64) has exceeded 6,000 users (doubling its user-base in the last 6 months).
(Sept. 2018) The proceedings of IVMSP 2018 - IEEE 13th Image, Video, and Multidimensional Signal Processing Workshop - are available in IEEE Xplore.
(July 2018) 25th Int. Conf. on Multimedia Modeling (MMM 2019), January 8-11, 2019, Thessaloniki, Greece: Workshops and Special Sessions announced; paper submission system is open. Submission deadlines starting from July 15, 2018.
(Apr. 2018) The InVID Verification Plugin for video verification in the browser (as of Jan. 2018 in version v0.60), has exceeded 3,000 users! Congratulations InVID!
(Mar. 2018) Our new book, "Personal Multimedia Preservation: Remembering or Forgetting Images and Video" (Springer Series on Cultural Computing), edited by Vasileios Mezaris, Claudia Niederée, and Robert H. Logie, has been published.

(Feb. 2018) 25th International Conference on Multimedia Modeling (MMM 2019), January 8-11, 2019, Thessaloniki, Greece. Workshop/Special Session proposals deadline: May 15, 2018; Paper submission deadline: July 15, 2018. MMM 2019 conference infomation and call for contributions.

(Jan. 2018) A new and exciting H2020 Research and Innovation Action, ReTV, just started!
(Jan. 2018) IEEE Image, Video, and Multidimensional Signal Processing Workshop (IVMSP 2018), June 10-12, 2018, Zagori, Aristi Village, Greece. Paper submission deadline (extended): February 19, 2018. IVMSP 2018 conference infomation and call for papers.
(Nov. 2017) Our paper on "Linear Maximum Margin Classifier for Learning from Uncertain Data" has been accepted for publication in the IEEE Transactions on Pattern Analysis and Machine Intelligence. More details and links in our publications webpage.
(Oct. 2017) New release of the InVID Verification Plugin, for video verification in the browser. Get it now from here!
(Oct. 2017) The program of MultiEdTech 2017: 1st Int. Workshop on Educational and Knowledge Technologies @ ACM Multimedia (October 23-27, 2017, Mountain View, CA, USA) is now available online.
(Oct. 2017) The program of MuVer 2017: 1st Int. Workshop on Multimedia Verification @ ACM Multimedia (October 23-27, 2017, Mountain View, CA, USA) is now available online.
(July 2017) InVID made an open beta release of its Verification Plugin, to help journalists save time and debunk more effectively fake video news. More details and downloading of the plugin here.
(July 2017) Our special Issue on "Deep Learning for Mobile Multimedia" has been published in the ACM Transactions on Multimedia Computing, Communication and Applications (TOMM): vol. 13, no. 3s, June 2017.
(June 2017) Best Poster Award at the ACM Int. Conf. on Multimedia Retrieval (ICMR 2017, Bucharest, Romania) for the paper "Concept Language Models and Event-based Concept Number Selection for Zero-example Event Detection", authored by D. Galanopoulos, F. Markatopoulou, V. Mezaris and I. Patras.
(Apr. 2017) New version v1.4.4 of CERTH's real-time video shot and scene segmentation software was publicly released in April. Check out the downloads page for details and links.
(Apr. 2017) New data release: we released concept detection scores (487 sports-related concepts and 345 TRECVID SIN concepts) for the MED16train dataset used in the TRECVID MED Task. See our downloads page for details and links.
(Mar. 2017) New data release: we released concept detection scores for the IACC.3 dataset used in the TRECVID AVS Task from 2016 and on (600 hr of internet archive videos). See our downloads page for details and links.
(Jan. 2017) A new and exciting H2020 Innovation Action, EMMA, just started!
(Oct. 2016) Our special Issue on "Multimedia in Ecology" has been published in Multimedia Systems (Springer): vol. 22, no. 6, pp. 709-782, Nov. 2016.
(Oct. 2016) We successfully participated in the Ad-hoc Video Search (AVS) and Multimedia Event Detection (MED) tasks of TRECVID 2016. In AVS, our best fully-automatic run was ranked 2nd-best (MXinfAP=0.051, compared to 0.054 and 0.040 for the 1st and 3rd best-performing teams using fully-automatic systems). In MED we also achieved very good results, with our best run reaching MInfAP@200=0.475.
(Sept. 2016) Our special Issue on "Fine-grained categorization in ecological multimedia" has been published in Pattern Recognition Letters (Elsevier): vol. 81, pp. 51-117, Oct. 2016.
(Feb. 2016) Accelerated Kernel Subclass Discriminant Analysis (AKSDA) and SVM combination: An efficient GPU-accelerated dimensionality reduction and classification method, for very high-dimensional data. Achieve SoA classification results, consistently higher than Kernel SVM approaches, at orders-of-magnitude shorter training times. More info and software download here.
(Jan. 2016) Two new and exciting H2020 projects, InVID and MOVING, just started or are about to start!
(Sept. 2015) New interactive on-line video analysis service: you upload videos via a web interface, and it performs shot/scene segmentation and visual concept detection (several times faster than real-time; uses our new concept detection engine). Results are displayed in an interactive user interface, which allows navigating through the video structure (shots, scenes), viewing the concept detection results for each shot, and searching by concepts within the video. Try this service now!
(Sept. 2015) Updated machine-to-machine video analysis service: a REST service receiving a video's URL, performing temporal segmentation to shots and scenes as well as visual concept detection, and returning the results in a machine-processable MPEG-7-compliant XML file. Updated in Sept. 2015 with our new concept detection engine. A short video-demo: http://youtu.be/FLTRZu-V97I. You can try this service (email us, mentioning your name and university / company affiliation, to receive a link and instructions).
(May 2015) Call for Papers, 2nd ACM International Workshop on Human-centered Event Understanding from Multimedia (HuEvent15) at the 23rd ACM Multimedia Conference (ACM MM 2015), Brisbane, Australia, 26-30 October 2015. Submission deadline: June 30, 2015.
(May 2015) The program and keynote of the Human Memory-Inspired Multimedia Organization and Preservation (HMMP15) Workshop @ IEEE ICME 2015, Torino, Italy, July 3, 2015, is announced here.
(Feb. 2015) Call for Papers, Human Memory-Inspired Multimedia Organization and Preservation (HMMP15) Workshop @ IEEE ICME 2015, Torino, Italy, June 29 - July 3, 2015. Submission deadline: March 30, 2015.
(Feb. 2015) Call for Papers, Special Issue on "Fine-grained Categorization in Ecological Multimedia", Pattern Recognition Letters, Elsevier. Submission deadline: March 15, 2015.
(Nov. 2014) A new, very fast machine learning method for big data problems was developed. This is a generic learning method, applicable to a wide range of problems that involve learning from big data. Tested in large-scale multimedia event detection problems, it produces better results than both Kernel- and Linear-SVMs, while its training is one or two orders of magnitude faster than that of Linear-SVMs. Check out our TRECVID presentation on this.
(Nov. 2014) Tutorials on "Video Hyperlinking" and related video analysis technologies were delivered at the IEEE Int. Conf. on Image Processing (ICIP'14), Paris, France, Oct. 2014, and at ACM Multimedia (MM'14), Orlando, FL, USA, Nov. 2014. The tutorials' slides are available in slideshare, in three parts:
- Part A: Motivation and Vision.
- Part B: Video Fragment Creation and Annotation for Hyperlinking.
- Part C: Insights into Hyperlinking Video Content.
(July 2014) New dataset (CERTH Image Blur Dataset) was publicly released during the last couple of weeks. Check out the downloads page for details and links.
(May 2014) The Proceedings of the 1st International Workshop on Social Events in Web Multimedia @ ACM International Conference on Multimedia Retrieval (ICMR 2014) (Glasgow, UK, April 1-4, 2014) are available here.
(Apr. 2014) Call for Papers, Human-centered Event Understanding from Multimedia (HuEvent14) @ ACM Multimedia 2014, Orlando, FL, USA, November 3-7, 2014. Submission deadline: June 30, 2014.
(Apr. 2014) Call for Papers, 3rd ACM Intl. Regular & Data Challenge Workshop on Multimedia Analysis for Ecological Data (MAED 2014) @ ACM Multimedia 2014, Orlando, FL, USA, November 3-7, 2014. Submission deadline: June 30, 2014. The Challenge dataset is available.
(Apr. 2014) Call for Multimedia Grand Challenge Solutions: VideoLectures.NET Challenge (MediaMixer, transLectures): Temporal segmentation and annotation of lecture videos @ ACM Multimedia 2014, Orlando, FL, USA, November 3-7, 2014. Submission deadline: June 29, 2014. The Challenge dataset is already available (ask for access details).
(Apr. 2014) Call for Participation, Social Event Detection (SED) and Synchronization of Event Media (SEM) benchmarking tasks at MediaEval 2014. Early registration (by May 1st, 2014) is encouraged!
(Jan. 2014) Best Paper Award at the 20th International Conference on MultiMedia Modeling (MMM'14, Dublin, Ireland) for the paper "A Comparative Study on the Use of Multi-Label Classification Techniques for Concept-Based Video Indexing and Annotation", authored by Fotini Markatopoulou, Vasileios Mezaris and Ioannis Kompatsiaris.
(Jan. 2014) Tutorial on Re-using Media On The Web at the 23rd International World Wide Web Conference (WWW'14), Seoul, Korea, April 7-11, 2014.

© 2015-2018 Vasileios Mezaris