% Categories: P2P-Next
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@InProceedings{Yanmaz2011a,
  author = {Yanmaz, Evsen and Kuschnig, Robert and Bettstetter, Christian},
  booktitle = {Proceedings of the GlobeCom 2010 (Wi-UAV Workshop)},
  title = {Channel Measurements Over 802.11a-Based UAV-to-Ground Links},
  year = {2011},
  address = {Piscataway, NJ, USA},
  editor = {How, Jonathan and Wietfeld, Christian},
  month = {dec},
  pages = {5},
  publisher = {IEEE},
  abstract = {The distribution of audio-visual content over the Internet has become very popular in recent years. However, due to the bandwidth requirements of videos in high definition, a costefficient distribution is desirable. In this paper we present a low-cost consumer electronics set-top box for streaming live video content using cost-efficient P2P networks. The main features of the set-top box include content discovery, highquality playback, easy user management, and social interaction.},
  language = {EN},
  pdf = {https://www.itec.aau.at/bib/files/WIUAV2011_Yanmaz.pdf},
  talktype = {none}
}
@InProceedings{Szkaliczki2011,
  author = {Szkaliczki, Tibor and Eberhard, Michael and Hellwagner, Hermann and Szobonya, Laszlo},
  booktitle = {7th Japanese-Hungarian Symposium on Discrete Mathematics and its Applications},
  title = {Knapsack Problem and Piece Picking Algorithms for Layered Video Streaming},
  year = {2011},
  address = {Kyoto, Japan},
  editor = {Fukunaga, Takuro and Iwata, Satoru and Nagamochi, Hiroshi and Takazawa, Kenjiro},
  month = {may},
  pages = {419-426},
  publisher = {published on workshop homepage},
  language = {EN},
  location = {Kyoto, Japan},
  pdf = {https://www.itec.aau.at/bib/files/hj2011_sztibor_final.pdf},
  talkdate = {2011.05.31},
  talktype = {registered}
}
@InProceedings{Stuart2011,
  author = {Stuart, Mark and Buckham, Mike and Marsh, Richard and Eberhard, Michael and Ishmael, Johnathan and Needham, Chris and Timmerer, Christian},
  booktitle = {Proceedings of the 2011 IEEE International Conference on Multimedia and Expo (ICME 2011)},
  title = {NextShareTV: A Set-Top Box for Bittorrent-based Live Streaming},
  year = {2011},
  address = {Los Alamitos, CA, USA},
  editor = {Cheng, Irene and Fernandez, Gabriel and Wang, Haohong},
  month = {jul},
  pages = {1},
  publisher = {IEEE},
  abstract = {The distribution of audio-visual content over the Internet has become very popular in recent years. However, due to the bandwidth requirements of videos in high definition, a costefficient distribution is desirable. In this paper we present a low-cost consumer electronics set-top box for streaming live video content using cost-efficient P2P networks. The main features of the set-top box include content discovery, highquality playback, easy user management, and social interaction.},
  language = {EN},
  location = {Barcelona, Spain},
  pdf = {https://www.itec.aau.at/bib/files/icme_nextsharetv_demo.pdf},
  talkdate = {2011.07.12},
  talktype = {registered}
}
@InProceedings{Quaritsch2011b,
  author = {Quaritsch, Markus and Kuschnig, Robert and Hellwagner, Hermann and Rinner, Bernhard},
  booktitle = {Proceedings of the 8th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2011)},
  title = {Fast Aerial Image Acquisition and Mosaicking for Emergency Response Operations by Collaborative UAVs},
  year = {2011},
  address = {Berlin, Heidelberg, New York},
  editor = {Dugdale,Julie and Mendonça,David},
  month = {may},
  pages = {5},
  publisher = {Springer},
  language = {EN},
  location = {Lisbon, Portugal},
  pdf = {https://www.itec.aau.at/bib/files/Quaritsch_ISCRAM2011.pdf},
  talktype = {none}
}
@InProceedings{Quaritsch2011a,
  author = {Quaritsch, Markus and Kuschnig, Robert and Wischounig-Strucl, Daniel and Yahyanejad, Saeed and Mersheeva, Vera and Yanmaz, Evsen and Friedrich, Gerhard and Hellwagner, Hermann and Bettstetter, Christian and Rinner, Bernhard},
  booktitle = {Proceedings of the Austrian Robotics Workshop (ARW-11)},
  title = {FAMUOS: A Multi-UAV System for Aerial Reconnaissance in Rescue Scenarios},
  year = {2011},
  address = {Hall in Tyrol, Austria},
  editor = {Hofbaur, Michael and Husty, Manfred},
  month = {may},
  pages = {3 3 3},
  publisher = {UMIT},
  language = {EN},
  location = {Hall in Tyrol, Austria},
  pdf = {https://www.itec.aau.at/bib/files/Quaritsch_ARW2011.pdf},
  talktype = {none}
}
@Article{Hellwagner2011a,
  author = {Hellwagner, Hermann and Hofbauer, Heinz and Kuschnig, Robert and Stütz, Thomas and Uhl, Andreas},
  journal = {Journal on Signal Processing: Image Communication},
  title = {Secure transport and adaptation of MC-EZBC video utilizing H.264-based transport protocols},
  year = {2011},
  issn = {0923-5965},
  month = {nov},
  pages = {30},
  abstract = {Universal Multimedia Access (UMA) calls for solutions where content is created once and subsequently adapted to given requirements. With regard to UMA and scalability, which is required often due to a wide variety of end clients, the best suited codecs are wavelet based (like the MC-EZBC) due to their inherent high number of scaling options. However, most transport technologies for delivering videos to end clients are targeted toward the H.264/AVC standard or, if scalability is required, the H.264/SVC. In this paper we will introduce a mapping of the MC-EZBC bitstream to existing H.264/SVC based streaming and scaling protocols. This enables the use of highly scalable wavelet based codecs on the one hand and the utilization of already existing network technologies without accruing high implementation costs on the other hand. Furthermore, we will evaluate different scaling options in order to choose the best option for given requirements. Additionally, we will evaluate different encryption options based on transport and bitstream encryption for use cases where digital rights management is required.},
  address = {Amsterdam, Netherlands},
  doi = {10.1016/j.image.2011.11.002},
  language = {EN},
  pdf = {https://www.itec.aau.at/bib/files/Elsevier_SPIC_Hellwagner11a.pdf},
  publisher = {Elsevier B.V.}
}
@InCollection{Hellwagner2011,
  author = {Hellwagner, Hermann and Kofler, Ingo and Eberhard, Michael and Kuschnig, Robert and Ransburg, Michael and Sablatschan, Michael},
  booktitle = {Streaming Media Architectures, Techniques and Applications: Recent Advances},
  publisher = {Information Science Reference},
  title = {Scalable Video Coding: Techniques and Applications for Adaptive Streaming},
  year = {2011},
  address = {Hershey, PA, USA},
  editor = {Zhu, Ce and Li, Yuenan and Niu, Xiamu},
  month = {jan},
  pages = {1-23},
  abstract = {This chapter covers the topic of making use of scalable video content in streaming frameworks and applications. Specifically, the recent standard H.264/SVC, i.e., the scalable extension of the widely used H.264/AVC coding scheme, and its deployment for adaptive streaming, the combined activities of content adaptation and streaming, are considered. H.264/SVC is regarded as a promising candidate to enable applications to cope with bandwidth variations in networks and heterogeneous usage environments, mainly diverse end device capabilities and constraints. The relevant coding and transport principles of H.264/SVC are reviewed first. Subsequently, an overview of H.264/SVC applications is given. The chapter then focuses on presenting architectural/implementation options and applications of H.264/SVC for adaptive streaming, emphasizing the aspect of where, i.e., on which network node and on which layer in the networking stack, in the video delivery path the content adaptation can take place; also, methods of content adaptation are covered. This pragmatic perspective is seen as complementing more general discussions of scalable video adaptation issues in the existing literature.},
  doi = {10.4018/978-1-61692-831-5},
  isbn10 = {161692831X},
  isbn13 = {9781616928315},
  language = {EN}
}
@InProceedings{Eberhard2011b,
  author = {Eberhard, Michael and Hellwagner, Hermann and Timmerer, Christian and Szkaliczki, Tibor and Szobonya, Laszlo},
  booktitle = {Proceedings of the 2011 {IEEE} International Conference on Multimedia and Expo (ICME 2011)},
  title = {An evaluation of piece-picking algorithms for layered content in Bittorrent-based peer-to-peer systems},
  year = {2011},
  address = {Los Alamitos, CA, USA},
  editor = {Cheng, Irene and Fernandez, Gabriel and Wang, Haohong},
  month = {jul},
  pages = {1-6},
  publisher = {IEEE},
  series = {ICME},
  language = {EN},
  location = {Barcelona, Spain},
  pdf = {https://www.itec.aau.at/bib/files/icme2011_piece-picking.pdf},
  talkdate = {2011.07.11},
  talktype = {registered}
}
@Article{Eberhard2011a,
  author = {Eberhard, Michael and Kumar, Amit and Mignanti, Silvano and Petrocco, Riccardo and Uitto, Mikko},
  journal = {International Journal on Advances in Internet Technology},
  title = {A Framework for Distributing Scalable Content over Peer-to-Peer Networks},
  year = {2011},
  month = {sep},
  number = {1\&2},
  pages = {1-13},
  volume = {4},
  abstract = {Peer-to-Peer systems are nowadays a very popular solution for multimedia distribution, as they provide significant cost benefits compared with traditional server-client distribution. Additionally, the distribution of scalable content enables the consumption of the content in a quality suited for the available bandwidth and the capabilities of the end-user devices. Thus, the distribution of scalable content over Peer-to-Peer network is a very actual research topic. This paper presents a framework for the distribution of scalable content in a fully distributed Peer-to-Peer network. The architectural description includes how the scalable layers of the content are mapped to the pieces distributed in the Peer-to-Peer system and detailed descriptions of the producer- and consumer-site architecture of the system. Additionally, an evaluation of the system’s performance in different scenarios is provided. The test series in the evaluation section assess the performance of our layered piece-picking core and provide a comparison of the performance of our system’s multi layer and single layer implementations. The presented system is to our knowledge the first open-source Peer-to-Peer network with full Scalable Video Coding support.},
  address = {N/A},
  keywords = {Peer-to-Peer; Scalable Video Coding; Packetizing; Error Concealment; Performance Evaluation},
  language = {EN},
  pdf = {https://www.itec.aau.at/bib/files/svc_framework_iaria.pdf},
  publisher = {IARIA}
}
@InProceedings{Waltl2010_WIAMIS_SensoryEffects,
  author = {Waltl, Markus and Timmerer, Christian and Hellwagner, Hermann},
  booktitle = {Proceedings of the 11th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS'10)},
  title = {Increasing the User Experience of Multimedia Presentations with Sensory Effects},
  year = {2010},
  address = {Los Alamitos, CA, USA},
  editor = {Leonardi, Riccardo and Migliorati, Pierangelo and Cavallaro, Andrea},
  month = {apr},
  pages = {1-4},
  publisher = {IEEE},
  abstract = {The term Universal Multimedia Experience (UME) has gained momentum and is well recognized within the research community. As this approach puts the user into the center stage, additional complexity is added to the overall quality assessment problem which calls for a scientific framework to capture, measure, quantify, judge, and explain the user experience. In previous work we have proposed the annotation of multimedia content with sensory effect metadata that can be used to stimulate also other senses than vision or audition. In this paper we report first results obtained from subjective tests in the area of sensory effects attached to traditional multimedia presentations such as movies that shall lead to an enhanced, unique, and worthwhile user experience.},
  isbn13 = {9781424478484},
  keywords = {Sensory Information, MPEG-V},
  language = {EN},
  location = {Desenzano del Garda, Italy},
  pdf = {https://www.itec.aau.at/bib/files/wiamis2010_mwcthh.pdf},
  talkdate = {2010.04.13},
  talktype = {poster}
}
@InProceedings{Waltl2010_QoMEX2010_SensoryEffects,
  author = {Waltl, Markus and Timmerer, Christian and Hellwagner, Hermann},
  booktitle = {Proceedings of the 2nd International Workshop on Quality of Multimedia Experience (QoMEX'10)},
  title = {Improving the Quality of Multimedia Experience through Sensory Effects},
  year = {2010},
  address = {Los Alamitos, CA, USA},
  editor = {Perkis, Andrew and Möller, Sebastian and Svensson, Peter and Reibman, Amy},
  month = {jun},
  pages = {124-129},
  publisher = {IEEE},
  abstract = {In previous and related work sensory effects are presented as a tool for increasing the user experience of multimedia presentations by stimulating also other senses than vision or audition. In this paper we primarily investigated the relationship of the Quality of Experience (QoE) due to various video bit-rates of multimedia contents annotated with sensory effects (e.g., wind, vibration, light). Therefore, we defined a subjective quality assessment methodology based on standardized methods. The paper describes the test environment, its setup, and conditions in detail. Furthermore, we experimented with a novel voting device that allows for continuous voting feedback during a sequence in addition to the overall quality voting at the end of each sequence. The results obtained from the subjective quality assessment are presented and discussed thoroughly. In anticipation of the results we can report an improvement of the quality of the multimedia experience thanks to the sensory effects.},
  doi = {10.1109/QOMEX.2009.5246962},
  isbn13 = {9781424469581},
  keywords = {Sensory Information, MPEG-V},
  language = {EN},
  location = {Trondheim, Norway},
  pdf = {https://www.itec.aau.at/bib/files/qomex2010_mwcthh.pdf},
  talkdate = {2010.06.21},
  talktype = {poster},
  url = {http://www.qomex2010.org}
}
@InProceedings{Timmerer2010_WISMA_SensoryEffects,
  author = {Timmerer, Christian and Waltl, Markus and Hellwagner, Hermann},
  booktitle = {Proceedings of the Workshop on Interoperable Social Multimedia Applications (WISMA 2010)},
  title = {Are Sensory Effects Ready for the World Wide Web?},
  year = {2010},
  address = {Aachen, Germany},
  editor = {Carreras, Anna and Delgado, Jaime and Maroñas, Xavier and Rodríguez, Víctor},
  month = {may},
  pages = {57-60},
  publisher = {CEUR Workshop Proceedings (CEUR-WS.org)},
  abstract = {The World Wide Web (WWW) is one of the main entry points to access and consume Internet content in various forms. In particular, the Web browser is used to access different types of media (i.e., text, image, audio, and video) and on some platforms is the only way to access the vast amount of information on the Web. Recently, it has been proposed to stimulate also other senses than vision or audition while consuming multimedia content through so- called sensory effects, with the aim to increase the user’s Quality of Experience (QoE). The effects are represented as Sensory Effects Metadata (SEM) which is associated to traditional multimedia content and is rendered (synchronized with the media) on sensory devices like fans, vibration chairs, lamps, etc. In this paper we provide a principal investigation of whether the sensory effects are ready for the WWW and, in anticipation of the result, we propose how to embed sensory effect metadata within Web content and the synchronized rendering thereof.},
  keywords = {MPEG-V},
  language = {EN},
  location = {Barcelona, Spain},
  pdf = {https://www.itec.aau.at/bib/files/MPEG-V_v2.1.pdf},
  talkdate = {2010.05.19},
  talktype = {registered}
}
@InProceedings{Timmerer2010_WISMA_Metadata,
  author = {Timmerer, Christian and Eberhard, Michael and Grafl, Michael and Mitchell, Keith and Dutton, Sam and Hellwagner, Hermann},
  booktitle = {Proceedings of the Workshop on Interoperable Social Multimedia Applications (WISMA 2010)},
  title = {A Metadata Model for Peer-to-Peer Media Distribution},
  year = {2010},
  address = {Aachen, Germany},
  editor = {Carreras, Anna and Delgado, Jaime and Maroñas, Xavier and Rodríguez, Víctor},
  month = {may},
  pages = {8},
  publisher = {CEUR Workshop Proceedings (CEUR-WS.org)},
  abstract = {In this paper we describe a metadata solution for a Peer-to-Peer (P2P) content distribution system termed NextShare. We outline the key motivating factors for our approach, detail the overall generic architecture we have developed and present the workflow for delivering metadata through Peer-to-Peer based content distribution. The paper also presents the metadata model we have developed and we describe in detail how all the content can be packetized and distributed using NextShare. Finally, a description of the core and optional metadata attributes which may be utilized within the system is provided.},
  keywords = {Metadata, peer-to-peer streaming, social networks, payment and cashing, advertisements, MPEG-21 Digital Item, API.},
  language = {EN},
  location = {Barcelona, Spain},
  pdf = {https://www.itec.aau.at/bib/files/P2P-Metadata_v2.0.pdf},
  talkdate = {2010.05.19},
  talktype = {registered},
  url = {http://www.multimedia-metadata.info/Members/ralf/callforpapers.2010-02-01.6353762208}
}
@InCollection{Timmerer2010_MXM_IOSPress,
  author = {Timmerer, Christian and Chiariglione, Filippo and Preda, Marius and Rodriguez Doncel, Victor},
  booktitle = {Towards the Future Internet - Emerging Trends from European Research},
  publisher = {IOS Press},
  title = {Accelerating Media Business Developments with the MPEG Extensible Middleware},
  year = {2010},
  address = {Amsterdam, Netherlands},
  editor = {Tselentis, Georgios and Galis, Alex and Gavras, Anastasius and Krco, Srdjan and Letz, Volkmar and Simperl, Elena and Stiller, Burkhard and Zahariadis, Theodore},
  month = {apr},
  pages = {217--226},
  abstract = {This document provides an overview of the MPEG Extensible Middleware (MXM), one of ISO/IEC MPEG’s latest achievements, defining an architecture and corresponding application programming interfaces (APIs) which enable accelerated media business developments. The paper describes the vision behind MXM, its architecture, and a high level overview of the API. Additionally, example MXM applications are given.},
  language = {EN},
  pdf = {https://www.itec.aau.at/bib/files/STAL9781607505396-0217.pdf}
}
@InProceedings{Timmerer2010_INTL-DPIF,
  author = {Timmerer, Christian and Hellwagner, Hermann},
  booktitle = {Proceedings of the 1st International Digital Preservation Interoperability Framework Symposium},
  title = {MPEG-21 digital items in research and practice},
  year = {2010},
  address = {New York, NY, USA},
  editor = {Chang, Wo},
  month = {apr},
  pages = {8:1-8:8},
  publisher = {ACM},
  series = {INTL-DPIF},
  abstract = {The aim of the MPEG‐21 standard, the so‐called Multimedia Framework, is to enable transparent and augmented use of multimedia resources across a wide range of networks, devices, user preferences, and communities, notably for trading (of bits). As such, it provides an important step in MPEG's standards evolution, i.e., the transaction of Digital Items among Users. This paper provides an overview of applications making use specifically of MPEG‐21 Digital Items and a more in‐depth presentation of a few selected applications in research and practice.},
  doi = {10.1145/2039263.2039271},
  keywords = {DANAE, ENTHRONE, MPEG-21, P2P-Next, UPnP, application, digital item, digital library, usage},
  language = {EN},
  location = {Dresden, Germany},
  pdf = {https://www.itec.aau.at/bib/files/a8-timmerer.pdf},
  slides = {https://www.itec.aau.at/bib/files/DPIF2010_v1.0.pdf},
  talkdate = {2010.04.22},
  talktype = {registered}
}
@InProceedings{Timmerer2010_ACMMM_SensoryExperience,
  author = {Timmerer, Christian and Müller, Karsten},
  booktitle = {Proceedings of the International Conference on Multimedia (MM '10)},
  title = {Immersive Future Media Technologies: From 3D Video to Sensory Experiences},
  year = {2010},
  address = {New York, NY, USA},
  editor = {del Bimbo, Alberto and Chang, Shih-Fu and Smeulders, Arnold},
  month = {oct},
  pages = {1781--1782},
  publisher = {ACM},
  abstract = {In this tutorial we present immersive future media technologies ranging from 3D video to sensory experiences. The former targets stereo and multi-view video technologies whereas the latter aims at stimulating other senses than vision or audition enabling an advanced user experiences through sensory effects.},
  doi = {10.1145/1873951.1874369},
  keywords = {Measurement, Experimentation, Human Factors, Standardization, Immersive Media, 3D Video, Stereo Video, Multi-view Video, Sensory Effects, MPEG-V, Quality of Experience},
  language = {EN},
  location = {Florence, Italy},
  pdf = {https://www.itec.aau.at/bib/files/tut08x-timmerer.pdf},
  talkdate = {2010.10.25},
  talktype = {registered},
  url = {http://doi.acm.org/10.1145/1873951.1874369}
}
@Article{Szkaliczki2010,
  author = {Szkaliczki, Tibor and Eberhard, Michael and Hellwagner, Hermann and Szobonya, László},
  journal = {Electronic Notes in Discrete Mathematics},
  title = {Piece Selection Algorithm for Layered Video Streaming in P2P Networks},
  year = {2010},
  issn = {1571-0653},
  month = {aug},
  note = {ISCO 2010 - International Symposium on Combinatorial Optimization},
  pages = {1265-1272},
  volume = {36},
  abstract = {This paper introduces the piece selection problem that arises when streaming layered video content over peer-to-peer networks. The piece selection algorithm decides periodically which pieces to request from other peers (network nodes) for download. The main goal of the piece selection algorithm is to provide the best possible quality for the available bandwidth. Our recommended solution approaches are related to the typical problems and solutions in the knapsack problem.},
  address = {New York, USA},
  doi = {10.1016/j.endm.2010.05.160},
  keywords = {streaming, layered video, knapsack problem},
  language = {EN},
  pdf = {https://www.itec.aau.at/bib/files/ISCO'10_Eberhard.pdf},
  publisher = {Elsevier Inc.},
  url = {http://www.sciencedirect.com/science/article/B75GV-50JJF7F-5P/2/7d978923400f50d4c42165003c64c351}
}
@InProceedings{Kuschnig2010a,
  author = {Kuschnig, Robert and Kofler, Ingo and Hellwagner, Hermann},
  booktitle = {Proceedings of the First Annual ACM SIGMM Conference on Multimedia Systems (MMSys)},
  title = {An Evaluation of TCP-based Rate-control Algorithms for Adaptive Internet Streaming of H.264/SVC},
  year = {2010},
  address = {New York, NY, USA},
  editor = {Feng, Wu-chi and Mayer-Patel, Ketan},
  month = {feb},
  pages = {157-168},
  publisher = {ACM},
  abstract = {Recent work in TCP video streaming indicates that multimedia streaming via TCP provides satisfactory performance when the achievable TCP throughput is approximately twice the media bit rate. However, these conditions may not be achievable on the Internet, e.g., when the delivery path offers insufficient bandwidth or becomes congested due to competing traffic. Therefore, adaptive streaming for videos over TCP is required and a number of rate-control algorithms for video streaming have been proposed and evaluated in the literature. In this paper, we evaluate and compare three existing rate-control algorithms for TCP streaming in terms of the (PSNR) quality of the delivered video and in terms of the timeliness of delivery. The contribution of the paper is that, to the best of our knowledge, this is the first evaluation of TCP-based streaming in an Internet-like setting making use of the scalability features of the H.264/SVC video codec. Two simple bandwidth estimation algorithms and a priority-/deadline-driven approach are described to adapt the bit rates of, and transmit, the H.264/SVC video in a rate-distortion optimal manner. The results indicate that the three algorithms perform robustly in terms of video quality and timely delivery, both on under-provisioned links and in case of competing TCP flows. The priority-/deadline-driven technique is even more stable in terms of packet delays and jitter; thus, client buffers can be dimensioned more easily.},
  doi = {10.1145/1730836.1730856},
  language = {EN},
  location = {Scottsdale, AZ, USA},
  pdf = {https://www.itec.aau.at/bib/files/MMSYS10_Kuschnig_Evaluation_TCP_based_Rate_Control.pdf},
  talkdate = {2010.02.23},
  talktype = {registered},
  url = {http://www.mmsys.org}
}
@InProceedings{Kuschnig2010,
  author = {Kuschnig, Robert and Kofler, Ingo and Hellwagner, Hermann},
  booktitle = {Proceedings of the 7th IEEE Consumer Communications and Networking Conference (CCNC)},
  title = {Improving Internet Video Streaming Performance by Parallel TCP-Based Request-Response Streams},
  year = {2010},
  address = {Los Alamitos, CA, USA},
  editor = {Balandin, Sergey and Matuszewksi, Marcin and Ott, Jörg},
  month = {jan},
  pages = {5},
  publisher = {IEEE},
  abstract = {TCP-based video streaming encounters difficulties in unreliable networks with unanticipated packet loss. In combination with high round trip times, the effective throughput deteriorates rapidly and TCP connection resets or stalls may occur. In this paper, we propose a client-driven video transmission scheme which utilizes multiple HTTP/TCP streams. The scheme is largely insensitive to unanticipated packet loss and thereby reduces throughput fluctuations. Since it is based on HTTP, the scheme can easily be deployed in existing network infrastructures. It fosters scalability on the server side by shifting complexity from the server to the clients. Certain features of request-response schemes allow maintaining fairness, despite of using multiple HTTP streams. Making use of TCP, the scheme inherently adapts to congested network links.},
  doi = {10.1145/1730836.1730856},
  language = {EN},
  location = {Las Vegas, NV, USA},
  pdf = {https://www.itec.aau.at/bib/files/CCNC10_Kuschnig_Request_Response_Streams.pdf},
  talkdate = {2010.01.10},
  talktype = {registered},
  url = {http://www.ieee-ccnc.org/2010}
}
@InProceedings{Eberhard2010,
  author = {Eberhard, Michael and Szkaliczki, Tibor and Hellwagner, Hermann and Szobonya, László and Timmerer, Christian},
  booktitle = {Proceedings of the 2010 ACM Workshop on Advanced Video Streaming Techniques for Peer-to-Peer Networks and Social Networking},
  title = {Knapsack Problem-based Piece-Picking Algorithms for Layered Content in Peer-to-Peer Networks},
  year = {2010},
  address = {New York, NY, USA},
  editor = {Olmo, Gabriella and Timmerer, Christian and Frossard, Pascal and Mitchell, Keith},
  month = {oct},
  pages = {71--76},
  publisher = {ACM},
  series = {AVSTP2P},
  abstract = {The distribution of layered content over peer-to-peer networks becomes more important today as the users are consuming the content on terminals with various display capabilities and different network connections. For single-layer content distribution, the piece-picking algorithm only needs to ensure that content pieces are downloaded in time for display. When layered content is distributed over a peer-to-peer network, the piece-picking algorithm needs to be modified to ensure that the best possible quality is displayed while all desired pieces still have to be received before their deadline expires. In this paper, the piece-picking problem for layered content is analyzed and a number of piece-picking algorithms for layered content based on the solutions for the knapsack problem are presented. Furthermore, an evaluation of these algorithms is performed and possible applications are discussed.},
  doi = {10.1145/1877891.1877908},
  isbn13 = {978-1-4503-0169-5},
  keywords = {knapsack problem, layered/scalable content, piece utility calculation, piece-picking},
  language = {EN},
  location = {Firenze, Italy},
  pdf = {https://www.itec.aau.at/bib/files/avst1524-eberhard.pdf},
  talkdate = {2010.10.29},
  talktype = {poster},
  url = {http://www.p2pstreaming.eu}
}
@InProceedings{Capovilla2010,
  author = {Capovilla, Nicola and Eberhard, Michael and Mignanti, Silvano and Petrocco, Riccardo and Vehkaperä, Janne},
  booktitle = {Proceedings of the Second International Conferences on Advances in Multimedia (MMEDIA 2010)},
  title = {An Architecture for Distributing Scalable Content over Peer-to-Peer Networks},
  year = {2010},
  address = {Los Alamitos, CA, USA},
  editor = {Böszörmenyi, Laszlo and Burdescu, Dumitru and Davis, Philip and Stanchev, Peter},
  month = {jun},
  pages = {1-6},
  publisher = {IEEE},
  abstract = {Peer-to-Peer systems are nowadays a very popular solution for multimedia distribution, as they provide significant cost benefits compared with traditional server-client distribution. Additionally, the distribution of scalable content enables the consumption of the content in a quality suited for the available bandwidth and the capabilities of the end-user devices. Thus, the distribution of scalable content over Peer-to-Peer networks is a very actual research topic. This paper presents an architecture for the distribution of scalable content in a fully distributed Peer-to-Peer network. The architectural description includes how the scalable layers of the content are mapped to the pieces distributed in the Peer-to-Peer system and detailed descriptions of the producer- and consumer-site architecture of the system. The presented system is to our knowledge the first open-source Peer-to-Peer network with full Scalable Video Coding support.},
  doi = {10.1109/MMEDIA.2010.17},
  keywords = {P2P networks;consumer-site architecture;distributed peer-to-peer network;multimedia distribution;open-source peer-to-peer network;scalable video coding;server-client distribution;image coding;multimedia computing;peer-to-peer computing;},
  language = {EN},
  location = {Athens, Greece},
  pdf = {https://www.itec.aau.at/bib/files/MMEDIA'10_Eberhard.pdf},
  talkdate = {2010.06.14},
  talktype = {registered},
  url = {http://www.iaria.org/conferences2010/MMEDIA10.html}
}
@InProceedings{Timmerer2009a,
  author = {Timmerer, Christian and Gelissen, Jean and Waltl, Markus and Hellwagner, Hermann},
  booktitle = {Proceedings of the 2009 NEM Summit},
  title = {Interfacing with Virtual Worlds},
  year = {2009},
  address = {Heidelberg},
  editor = {Hrasnica, Halid},
  month = sep,
  pages = {118-123},
  publisher = {Eurescom – the European Institute for Research and Strategic Studies in Telecommunications – GmbH},
  abstract = {Virtual worlds (often referred to as 3D3C for 3D visualization & navigation and the 3C’s of Community, Creation and Commerce) integrate existing and emerging (media) technologies (e.g. instant messaging, video, 3D, VR, AI, chat, voice, etc.) that allow for the support of existing and the development of new kinds of networked services. The emergence of virtual worlds as platforms for networked services is recognized by businesses as an important enabler as it offers the power to reshape the way companies interact with their environments (markets, customers, suppliers, creators, stakeholders, etc.) in a fashion comparable to the Internet and to allow for the development of new (breakthrough) business models, services, applications and devices. Each virtual world however has a different culture and audience making use of these specific worlds for a variety of reasons. These differences in existing Metaverses permit users to have unique experiences. In order to bridge these differences in existing and emerging Metaverses a standardized framework is required, i.e., MPEG-V Media Context and Control (ISO/IEC 23005), that will provide a lower entry level to (multiple) virtual worlds both for the provider of goods and services as well as the user. The aim of this paper is to provide an overview of MPEG-V and its intended standardization areas. Additionally, a review about MPEG-V’s most advanced part – Sensory Information – is given.},
  issn = {9783000289538},
  keywords = {MPEG-V},
  language = {EN},
  pdf = {https://www.itec.aau.at/bib/files/nem2009_ctjgmwhh.pdf},
  talktype = {none},
  url = {http://www.nem-summit.eu}
}
@InProceedings{Kofler2009a,
  author = {Kofler, Ingo and Kuschnig, Robert and Hellwagner, Hermann},
  booktitle = {Proceedings of the IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB)},
  title = {Improving IPTV Services by H.264/SVC Adaptation and Traffic Control},
  year = {2009},
  address = {Los Alamitos, CA, USA},
  editor = {Angueira, Pablo and Reimers, Ulrich},
  month = may,
  pages = {1-6},
  publisher = {IEEE},
  series = {BMSB},
  abstract = {This paper presents a novel approach that combines both in-network, application-layer adaptation and network-layer traffic control of scalable video streams based on the H.264/SVC standard. In the IPTV/VoD scenario considered, an intercepting RTSP/RTP proxy performs admission control of the requested video, based on the signaled scalability information, and decides whether the content can be streamed without changes or in an adapted version. The proxy configures the network layer appropriately in order to separate the video stream from besteffort traffic on the same link. Rather than performing fixed bandwidth allocation, our proxy approach uses the Hierarchical Token Bucket (HTB) queuing discipline to allow for borrowing bandwidth between traffic classes. In that setting, two different allocation policies are introduced. The Hard Reservation Policy (HRP) performs admission control and adaptation on the video streams and does not modify video bandwidth allocation after admission. In contrast, the Flexible Borrowing Policy (FBP) restricts the admission control to the base layer of the SVC stream. The packets carrying MGS enhancement layer data are marked with priorities by the proxy and are handled at the network layer by a priority-based queuing mechanism. Both a qualitative comparison and an experimental evaluation of the two policies are given.},
  doi = {10.1109/ISBMSB.2009.5133771},
  isbn13 = {9781424425907},
  language = {EN},
  location = {Bilbao, Spain},
  talkdate = {2009.05.14},
  talktype = {registered},
  url = {https://www.itec.aau.at/publications/mmc/BMSB09_Kofler_Improving_IPTV_Services_Preprint.pdf}
}
@Article{Eberhard2009a,
  author = {Eberhard, Michael and Timmerer, Christian and Quacchio, Emanuele and Hellwagner, Hermann},
  journal = {IEEE Wireless Communications},
  title = {An Interoperable Delivery Framework for Scalable Media Resources},
  year = {2009},
  month = {oct},
  number = {Vol. 16, No. 5},
  pages = {58-63},
  volume = {Oktober 2009},
  abstract = {In this paper, an interoperable framework for the delivery of scalable media resources, e.g., in the standardized Scalable Video Coding (SVC) format, is presented. The framework provides support for Video on Demand (VoD) as well as multicast streaming and performs an efficient, generic, and interoperable adaptation of the streamed content based on MPEG-21 Digital Item Adaptation (DIA). The server as well as the clients of the streaming framework implement the MPEG Extensible Middleware (MXM) and utilize the MPEG Query Format (MPQF) for querying the available media resources. The framework has been fully integrated into the VLC media player. The architecture for both, VoD and multicast is presented in detail. Finally, a comparison in terms of performance of the generic MPEG-21 metadata-based adaptation approach to an SVC-specific adaptation approach is provided.},
  address = {Los Alamitos, CA, USA},
  language = {EN},
  pdf = {https://www.itec.aau.at/bib/files/ieeewireless_eberhard.pdf},
  publisher = {IEEE}
}
@InProceedings{Eberhard2009,
  author = {Eberhard, Michael and Timmerer, Christian and Hellwagner, Hermann},
  booktitle = {STreaming Day ’09 Proceedings},
  title = {A Layered Piece-Picking Algorithm for Peer-to-Peer Networks},
  year = {2009},
  address = {NA},
  editor = {Raggio, Marko and Rovati, Fabrizio},
  month = sep,
  pages = {n.a.},
  publisher = {NA},
  abstract = {The streaming of multimedia content over Peer-to-Peer (P2P) networks is nowadays a well appreciated concept, as it helps distributing content to a great number of users and additionally reduces the server costs for providing the content. As the users of P2P networks often have different bandwidth connections and terminals, the same content is usually provided in different qualities. Although such a provision of the same content in different qualities helps to satisfy all users, it makes the sharing process less efficient. Users that are interested in the content in a specific quality can only exchange pieces with those users that are interested in the same content and the same quality. Thus, layered video coding, which provides different qualities within one bitstream, is especially well suited for P2P distribution. If the layered content is provided once in the best quality, all peers interested in this content can at least exchange the base layer, plus the enhancement layers they are interested in with those peers that have them available.},
  issn = {9781616236212},
  language = {EN},
  location = {Genova, Italy},
  talkdate = {2009.09.21},
  talktype = {registered}
}
@InProceedings{Eberhard2008c,
  author = {Eberhard, Michael and Celetto, Luca and Timmerer, Christian and Quacchio, Emanuele and Hellwagner, Hermann},
  booktitle = {STreaming Day'08 Proceedings},
  title = {An Interoperable Streaming Framework for Scalable Video Coding based on MPEG-21},
  year = {2008},
  address = {Parma},
  editor = {Fanucci, Luca and Rovati, Fabrizio and Timmerer, Christian},
  month = {sep},
  pages = {4},
  publisher = {University of Parma},
  abstract = {In this paper, an interoperable streaming framework for the adaptation and streaming of scalable multimedia content is presented. The streaming framework’s architecture for Video on Demand (VoD) as well as multicast streaming is presented. The VoD test-bed allows each client to set up a separate streaming session and receive the bitstreams in a quality tailored to the clients requirements, while the multicast test-bed provides a layered scalable multicast to all clients and every client needs to decide which layers to subscribe to. After the description of the architectures, a comparison in terms of performance of the MPEG-21 DIA metadata-based adaptation approach to an SVC-specific adaptation approach is presented. Furthermore, optimizations for both adaptation approaches are presented and the performance improvements due to the optimizations are discussed.},
  issn = {9781607029373},
  language = {EN},
  location = {Parma, Italy},
  pdf = {https://www.itec.aau.at/bib/files/Streaming Day'08_Eberhard_StreamingFramework_Paper.pdf},
  talkdate = {2008.09.02},
  talktype = {registered}
}
@InProceedings{Eberhard2008b,
  author = {Eberhard, Michael and Celetto, Luca and Timmerer, Christian and Quacchio, Emanuele and Hellwagner, Hermann and Rovati, Fabrizio S},
  booktitle = {Proceedings of the 5th IET Visual Information Engineering Conference Conference (VIE’08)},
  title = {An Interoperable Streaming Framework for Scalable Video Coding based on MPEG-21},
  year = {2008},
  address = {London},
  editor = {Izquierdo, Ebroul and Liu, Guizhong},
  month = {jul},
  pages = {723-728},
  publisher = {IET},
  abstract = {This paper presents an interoperable framework for the streaming of scalable multimedia content such as Scalable Video Coding (SVC). In particular, the framework’s architecture for both, Video on Demand (VoD) and multicast streaming, is presented. The architecture includes a detailed description of the adaptation engine – conforming to MPEG-21 Digital Item Adaptation – as well as the integration of the adaptation engine into VideoLAN’s VLC media player, which provides the streaming server and client for the framework. Following the description of the architecture, a comparison in terms of performance of the generic MPEG-21 DIA-based adaptation approach, which is utilized by the described demo, versus an SVC-specific adaptation approach is presented and possible further improvements for both approaches are investigated.},
  isbn13 = {978-0-86341-914-0},
  issn = {0537-9989},
  keywords = {Adaptation, MPEG-21 Digital Item Adaptation, Multicasting, Scalable Video Coding, Video on Demand},
  language = {EN},
  location = {Xi'an, China},
  pdf = {https://www.itec.aau.at/bib/files/VIE08_Eberhard.pdf},
  talkdate = {2008.07.29},
  talktype = {registered}
}
@InProceedings{Eberhard2008a,
  author = {Eberhard, Michael and Celetto, Luca and Timmerer, Christian and Quacchio, Emanuele and Hellwagner, Hermann and Rovati, Fabrizio S},
  booktitle = {Proceedings of the IEEE International Conference on Multimedia and Expo 2008 (ICME’08)},
  title = {An Interoperable Multimedia Delivery Framework for Scalable Video Coding based on MPEG-21 Digital Item Adaptation},
  year = {2008},
  address = {Los Alamitos, CA, USA},
  editor = {Ostermann, Jörn and Ebrahimi, Touradj},
  month = {jun},
  pages = {1607-1608},
  publisher = {IEEE},
  abstract = {In this paper we present an interoperable multimedia delivery framework for scalable video coding based on MPEG-21 Digital Item Adaptation (DIA). In can be used to transmit scalable video contents within heterogeneous usage environments where the properties of the usage environment (e.g., terminal/network capabilities) may change dynamically during the streaming session. The usage environment is signaled by interoperable description formats provided by the DIA standard. Additionally, the adaptation itself is done by exploiting the standard's generic adaptation approach, i.e., independent of the actual coding format. Thus, the overall framework is also applicable for other scalable coding formats.},
  issn = {9781424425709},
  language = {EN},
  location = {Hannover, Germany},
  pdf = {https://www.itec.aau.at/bib/files/ICME08_Eberhard.pdf},
  talkdate = {2008.06.25},
  talktype = {poster}
}
@InProceedings{Eberhard2008,
  author = {Eberhard, Michael and Celetto, Luca and Timmerer, Christian and Quacchio, Emanuele and Hellwagner, Hermann},
  booktitle = {2008 Ninth International Workshop on Image Analysis for Multimedia Interactive Services},
  title = {Performance Analysis of Scalable Video Adaptation: Generic versus Specific Approach},
  year = {2008},
  address = {Los Alamitos, CA, USA},
  editor = {Hellwagner, Hermann and Timmerer, Christian},
  month = {may},
  pages = {43-50},
  publisher = {IEEE},
  abstract = {This paper provides a performance analysis of adaptation approaches designed for scalable media resources. In particular, we investigate the streaming of media resources compliant to the Scalable Video Coding (SVC) extensions of Advanced Video Coding (AVC)within heterogeneous environments, i.e., terminals and networks with different capabilities. Therefore, we have developed a test-bed in order to analyze two different approaches for the adaptation of scalable media resources, namely a generic approach that is applicable independently of the actual scalable coding format used and a specific approach especially built for SVC.The results show that if adaptation is required the generic approach clearly outperforms the approach specifically built for SVC},
  isbn10 = {076953130X},
  isbn13 = {978-0769531304},
  language = {EN},
  location = {Klagenfurt, Austria},
  pdf = {https://www.itec.aau.at/bib/files/wiamis08_eberhard.pdf},
  talkdate = {2008.05.09},
  talktype = {registered}
}