Can you trust what you see? The magic of visual perception

Oge Marques | Distinguished ACM Speaker | Florida Atlantic University (FAU) | May 18, 2016 | 08.30am – 10.00am | E.2.42

Abstract: Vision is our most developed sense and one upon which we rely to make many decisions, conscious or otherwise. Many of our everyday interactions, such as driving a car, greeting familiar faces on the street, or deciding which dish to order at a restaurant, are guided by our visual sense. For the most part, this works well. But sometimes we are reminded of our visual system’s limitations and surprising behavior through optical illusions that exploit misjudgments in size, distance, depth, color and brightness, among many others. This lecture presents and explains a diverse collection of visual perception phenomena that challenge our common knowledge of how well we detect, recognize, compare, measure, interpret, and make decisions upon the information that arrives at our brain through our eyes. It also explains the relationships between the latest developments in human vision research and emerging technologies, such as: self-driving cars, face recognition and other forms of biometrics, and virtual reality. After seeing a large number of examples of optical illusions and other visual phenomena, this talk will make you wonder: can you really trust what you see?

OgeBio: Oge Marques is Professor of Computer and Electrical Engineering and Computer Science at Florida Atlantic University (FAU) (Boca Raton, Florida). He has more than 25 years of teaching and research experience in the fields of image processing and computer vision. His research interests are in the area of intelligent processing of visual information, which combines the fields of image processing, computer vision, image retrieval, machine learning, serious games, and human visual perception. He is the (co-) author of two patents, more than 100 refereed journal and conference papers, and several books in these topics, including the textbook Practical Image and Video Processing Using MATLAB (Wiley-IEEE Press, 2011). He is Editor-in-Chief (with Borko Furht) of the upcoming 3rd edition of the Encyclopedia of Multimedia ( He is a senior member of both the ACM and the IEEE and a member of the honor societies of Tau Beta Pi, Sigma Xi, Phi Kappa Phi, and Upsilon Pi Epsilon.

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Student-centered teaching patterns in the context of computational thinking problem solving processes

Dr. Bernhard Standl-Gruber | 18.05.2016 | 13:00 Uhr | E.2.37


Successful learning can take place when the learner is addressed at all levels of learning instead of limiting teaching to knowledge transfer but also involving an emotional and skills level. Considering this as the student-centered approach, we designed, carried out and revised in practice computer science lessons in 9th grade classrooms. During these real classroom experiences we identified certain successful scenarios when such learning was effective. We subsequently transformed scenarios to a more abstract representation and obtained as a result 24 patterns, which uniformly describe how student-centered lessons in computer science can be carried out. The patterns don’t specify detailed instructions for the teacher but still hold all the information necessary to be coherent with the pedagogical approach in the context of computer science. Instead of providing a detailed description of lesson plans and exact scenarios, the patterns describe how different teaching procedures can be approached alongside the student-centered approach. The advantage of this representation is, that it leaves the freedom of individual implementation to the teacher. In order to prove the concept of the patterns four case studies in classrooms were carried out with the design-based research approach as driving force combined with mixed methods as questionnaires, classroom meetings, and audio recordings. Outcomes showed, that these patterns have impact on students’ perception of the teacher’s attitudes. Furthermore, we identified detailed aspects of students’ communication characteristics during problem solving processes. In a next step, these patterns were further applied during a research visit in the United States in the context of computational thinking problem solving tasks. Assuming that problem solving processes can be found in everyday occurrences, computational thinking problem solving skills affect everyone and should be part of a general knowledge every person should have these days. Therefore, we combined the patterns with computer science algorithms in the context of everyday life settings and designed lesson scenarios for four high school classes. These classroom activities were accompanied with the mixed research approach and case studies. First results of this study showed, that students improved required skills for computational problem solving.

standlBernhard Standl is a postdoctoral researcher and lecturer at the Faculty of Computer Science at the University of Vienna and computer science teacher at a secondary school in Vienna. After graduating from computer science and history studies with teacher certification, he finished in 2014 the PhD studies in computer science education at the University of Vienna in Austria and completed the thesis in the interdisciplinary field of computer science and education. Since 2008 he was part of computer science education and interdisciplinary, international projects. 2015 he stayed as Fulbright research fellow at Missouri State University in Springfield, MO where he carried out an individual research project named coThink – Computational Thinking. His research interests are focused on computer science education and technology enhanced learning at secondary school level and is interested in research for promoting computational thinking aimed at inspiring students for experiencing computer science as an exciting subject.

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Polynomial matrices – a brief overview

Dr. Stephan Alexander Weiss | 25.04.2016 | 11:00 Uhr | B04, L4101


Polynomial matrices can help to elegantly formulate many broadband multi-sensor / multi-channel processing problems, and represent a direct extension of well-established narrowband techniques which typically involve eigen- (EVD) and singular value decompositions (SVD) for optimisation. Polynomial matrix decompositions extend the utility of the EVD to polynomial parahermitian matrices, and this talk presents a brief overview of such polynomial matrices, characteristics of the polynomial EVD (PEVD) and iterative algorithms for its solution. The presentation concludes with some surprising results when applying the PEVD to subband coding and broadband beamforming.

WeissStephan Weiss is Head of the Centre for Signal and Image Processing at the University of Strathclyde. He obtained Dipl.-Ing. and PhD degrees in 1995 and 1998 from the Universities of Erlangen-Nuernberg and from the University of Strathclyde. Since then, he has been a member of academic staff at the Universities of Southampton (1999-2006) and Strathclyde (1998/99 and since 2006). With his team we works on adaptive, array and statistical signal processing problems with applications in acoustics & audio, communications and biomedical problems. He has been co-organiser of the European Signal Processing Conference (EUSIPCO) 2009 in Glasgow and a number of other events.

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When less is more: a traceability recovery paradox

Prof. Giuliano Antoniol | 19.04.2016 | 11:00 Uhr | I.2.35


The IEEE glossary defines traceability as “the degree to which a relationship can be established between two or more products of the development process.” Traceability underlies many important software and systems engineering activities, such as program understanding, change impact analysis, contractual agreement as well as verification and validation. Despite important research advances in the automated creation and maintenance of trace links, artifact traceability is still not completely understood.

This talk briefly introduces key traceability ideas; the basic information retrieval models and traceability recovery approaches. It briefly summarizes the state of the art in traceability recovery and recent advances. Finally it discusses an on going research effort to determine an optimal and minimal set of candidate links to build a robust traceability recovering recognizer. Surprisingly, it may happen that a system built with just a handful of carefully selected candidate links, outperforms systems built using much more information. The talk presents preliminary results on publicly available datasets and it discuss findings, implications and research directions.

Antoniol_1Giuliano Antoniol is professor of Software Engineering in the Department of Computer and Software Engineering of the Polytechnique Montréal where he directs the SOCCER laboratory. He worked in private companies, research institutions and universities. In 2005 he was awarded the Canada Research Chair Tier I in Software Change and Evolution. He has served in the program, organization and steering committees of numerous IEEE and ACM sponsored international conferences and workshops. His research interest include software evolution, empirical software engineering, software traceability, search based software engineering, mining software repositories and software testing.


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Smart Camera Systems

Bernhard Rinner | May 10, 2016 | 18:00 | Seeparkhotel (co-located with

Abstract: Smart cameras combine video sensing, processing, and communication on a single embedded platform. Networks of smart cameras are real-time distributed embedded systems that perform computer vision using multiple cameras. This new approach has emerged thanks to a confluence of simultaneous advances in four key disciplines: computer vision, image sensors, embedded computing, and sensor networks. Recently these networks have gained a lot of interest in research and industry; applications include surveillance, assisted living and smart environments. In this talk I will introduce some fundamentals of the emerging field of smart camera systems, present selected examples and discuss trends and challenges for future systems.

BRinner-Jul2015smBio: Bernhard Rinner is professor at the Alpen-Adria-Universität Klagenfurt, Austria where he is heading the Pervasive Computing group. He is deputy head of the Institute of Networked and Embedded Systems and served as vice dean of the Faculty of Technical Sciences from 2008-2011. Before joining Klagenfurt he was with Graz University of Technology and held research positions at the Department of Computer Sciences at the University of Texas at Austin in 1995 and 1998/99.

His current research interests include embedded computing, sensor networks and pervasive computing.  Bernhard Rinner has been co-founder and general chair of the ACM/IEEE International Conference on Distributed Smart Cameras and has served as chief editor of a special issue on this topic in The Proceedings of the IEEE.  Currently, he is Associate Editor for Ad Hoc Networks Journal and EURASIP Journal on Embedded Systems. Together with partners from four European universities, he has jointly initiated the Erasmus Mundus Joint Doctorate Program on Interactive and Cognitive Environments (ICE). He is member of IEE and IFIP and member of the board of the Austrian Science Fund.

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Mulsemedia = multiple sensorial media = novelty or reinvention?

Gheorghita Ghinea | Brunel University, UK | May 10, 2016 | 19:00 | Seeparkhotel (co-located with

Abstract: Traditionally, multimedia applications have primarily engaged two of the human senses ? the audio and the visual ? out of the five possible. With recent advances in computational technology, it is now possible to talk of applications that engage the other three senses, as well: tactile, olfaction, and gustatory. This integration leads to a paradigm shift away from the old multimedia towards the new mulsemedia : multiple sensorial media. In his talk, Dr. Ghinea is going to focus on the issue of the perceptual experience of mulsemedia and how research in the area has opened new and sometimes challenging opportunities for mulsemedia applications.

Dr. Gheorghita GhineaBio: Dr. Gheorghita Ghinea is a Reader in the School of Information Systems and Computing at Brunel University, United Kingdom. He received the B.Sc. and B.Sc. (Hons) degrees in Computer Science and Mathematics, in 1993 and 1994, respectively, and the M.Sc. degree in Computer Science, in 1996, from the University of the Witwatersrand, Johannesburg, South Africa; he then received the Ph.D. degree in Computer Science from the University of Reading, United Kingdom, in 2000. His research activities lie at the confluence of Computer Science, Media and Psychology. In particular, his work focuses on the area of perceptual multimedia quality and building end-to-end communication systems incorporating user perceptual requirement. He has over 250 publications in leading international conferences and journals; Dr. Ghinea has co-edited two books on Digital Multimedia Perception and Design, and Multiple Sensorial Media Advance and Applications. He leads a team of 8 researchers and consults regularly to both public and private organisations and bodies in his areas of research expertise.

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MPEG-DASH Spatial Relationship Description

Omar Aziz Niamut | TNO | May 10, 2016 | 16:30 | Seeparkhotel (co-located with

Abstract: This talk presents the Spatial Representation Description (SRD) feature of the second amendment of MPEG DASH standard part 1, 23009-1:2014. SRD is an approach for streaming only spatial sub-parts of a video to display devices, in combination with the form of adaptive multi-rate streaming that is intrinsically supported by MPEG DASH. The SRD feature extends the Media Presentation Description (MPD) of MPEG DASH by describing spatial relationships between associated pieces of video content. This enables the DASH client to select and retrieve only those video streams at those resolutions that are relevant to the user experience. The paper describes the design principles behind SRD, the different possibilities it enables and examples of how SRD was used in different experiments on interactive streaming of ultra-high resolution video.

Niamut_Omar_smallBio: Omar Aziz Niamut is a senior research scientist at the Netherlands Organization for Applied Scientific Research (TNO), working on shared interactive and immersive media delivery. He received MSc. (2001) and PhD. (2006) degrees from Delft university of Technology. In 2007, he advised and reported to the European Parliament and the European Commission on the harmonisation of mobile TV. From 2008-2010, he made over 300 standardization contributions to ETSI TISPAN and advised the Singapore government on the use of IPTV standards. In 2007, he was the technical lead for one of the world’s first user trial of social TV services and in 2014, he led a joint effort with the BBC towards the world’s first live tiled streaming of UHD video to end users. He has been active as work package lead in EU FP7 projects FascinatE, STEER and EXPERIMEDIA. He has presented at international industry events such as Broadband Home Forum, International Broadcast Convention, IPTV Seminar and IPTV World Forum, NEM Summit and Future Internet Assembly. He is an expert reviewer for the IWT funded iMinds ICON programme and a NEM ETP Steering Board member. He is author of multiple journal papers and conference publications in the fields of audio coding, interactive IPTV services and immersive media, filed 20 patent applications, contributed a chapter to a book on Social TV and co-edited a book on format-agnostic media. He has been serving as Co-chair and main organizer of the WSICC workshop 2013 and 2015, the workshop series (2013, 2014) on cross-breeding social networks and networked media in the Future Internet, and has been appointed as General Co-chair for ACM TVX 2017, the prime venue for publishing research related to TV and online video experiences.

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More Juice Less Bits: Content-Aware Streaming

Ali C. Begen | IEEE ComSoc Distinguished Lecturer | May 10, 2016 | 15:30 | Seeparkhotel (co-located with

Abstract: Watching video over the Web is without a doubt the most popular way to access both free and premium content on connected devices for all kinds of consumers from novices to professionals. The underlying technology, called HTTP adaptive streaming, is quite straightforward; however, it does not always result in the most pleasant viewer experience due to quality fluctuations. This can cause dissatisfaction for consumers, leading to revenue loss for providers in both managed and unmanaged video services. In this talk, we will explain a new approach to adaptive streaming that we refer to as content-aware streaming. This is not just another adaptive streaming algorithm but a completely untraditional streaming toolset that enables premium viewer experience with minimal cost to the provider. After we briefly cover what solutions have been proposed for existing problems, and what worked and did not work for consumers and providers, we take a stab at clarifying some of the recent public announcements that have been largely misunderstood by the streaming community. Most importantly, we explain why content-aware encoding is not the solution by itself to the problems most providers are facing today.

Ali_C_Begen1Bio: Ali C. Begen has joined MediaMelon, Inc. as the principal architect for streaming technologies in February 2016, where he is currently heading the development efforts for MediaMelon’s content-aware streaming solutions that enable premium viewer experience while minimizing operational costs and improving profitability. He is also a co-founder of Networked Media, a technology company that offers consulting services to industrial, legal and academic institutions in the IP video space. He has been a research and development engineer since 2001, and has broad experience in mathematical modeling, performance analysis, optimization, standards development and intellectual property innovation. Between 2007 and 2015, he was with the Video and Content Platforms Research and Advanced Development Group at Cisco, where he has architected, designed and developed algorithms, protocols, products and solutions in the service provider and enterprise video domains. Since 2007, he has been leading professional and academic projects, and teaching graduate-level courses and giving lectures in universities around the world. Ali holds a Ph.D. degree in electrical and computer engineering from Georgia Tech. He received a number of scholar and industry awards, and he has editorial positions in prestigious magazines and journals in the field. He is a senior member of the IEEE and a senior member of the ACM. More recently, in January 2016, he was elected as a distinguished lecturer by the IEEE Communications Society. Further information on his projects, publications, keynotes, tutorials, and teaching, standards and professional activities can be found at


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Using Games to improve Computer Vision Solutions

Oge Marques | Distinguished ACM Speaker | Florida Atlantic University (FAU) | May 10, 2016 | 14:00 | Seeparkhotel (co-located with

Abstract: There are many challenging problems in computer vision for which state-of-the-art solutions fall short of performing perfectly. The realization that many of these tasks are arduous for computers yet are relatively easy for humans has inspired many researchers to approach those problems from a human computation viewpoint, using methods that include crowdsourcing and games often called games with a purpose(GWAPs). The talk discusses how we can use human computation (in general) and particularly games to help uncover hidden aspects of visual perception and use these findings to improve computer vision solutions to related problems.

marquesBio: Oge Marques ( is Professor of Computer and Electrical Engineering and Computer Science at Florida Atlantic University (FAU) (Boca Raton, Florida). He has more than 25 years of teaching and research experience in the fields of image processing and computer vision. His research interests are in the area of intelligent processing of visual information, which combines the fields of image processing, computer vision, image retrieval, machine learning, serious games, and human visual perception. He is particularly interested in the combination of human computation and machine learning techniques to solve computer vision problems. He is the (co-) author of two patents, more than 100 refereed journal and conference papers, and several books in these topics, including the textbook Practical Image and Video Processing Using MATLAB (Wiley-IEEE Press, 2011). He is Editor-in-Chief (with Borko Furht) of the upcoming 3rd edition of the Encyclopedia of Multimedia ( He is a senior member of both the ACM and the IEEE and a member of the honor societies of Tau Beta Pi, Sigma Xi, Phi Kappa Phi, and Upsilon Pi Epsilon.

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INFORMATIK 2016 vom 26. bis 30. September 2016 in Klagenfurt: Informatik: von Menschen für Menschen

Informatiksysteme der Zukunft stellen den Menschen in den Mittelpunkt: mit seinen Erwartungen, seinen Möglichkeiten und Bedürfnissen in einer Welt des beschleunigten Privat- und Arbeitslebens, und der zunehmend komplexen Aufgaben und Abläufe.

Funktionalität, Gebrauchstauglichkeit und Wirtschaftlichkeit sind dabei gleichermaßen bedeutend wie Sicherheit, Effizienz und Effektivität. Und vor allem müssen Informatiksysteme beherrschbar, unaufdringlich und verstehbar bleiben.

Eine Woche lang setzt sich die INFORMATIK 2016 aus den verschiedensten Perspektiven mit den neuesten Ansätzen und Trends zur Bewältigung dieser Herausforderungen auseinander: im Rahmen von insgesamt fünf Konferenzen, rund 50 Workshops, Symposien und Tutorien.

Die INFORMATIK ist das jährliche Treffen der im deutschsprachigen Raum an aktuellen Informatik-Themen Interessierten, und gleichzeitig die Jahrestagung der Gesellschaft für Informatik GI. Die Klagenfurter Informatik ist stolz darauf, dass diese Groß-Veranstaltung nach 15 Jahren (zuletzt 2001 an der Universität Wien) wieder einmal in Österreich stattfinden kann.

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