Publications 2001 – 2008
I. Kofler, J. Seidl, C. Timmerer, H. Hellwagner, I. Djama and T. Ahmed, “Using MPEG-21 for cross-layer multimedia content adaptation”, Journal on Signal, Image and Video Processing,
Springer, vol. 2, no. 4, Dec. 2008. [ PDF ] [Ack: ENTHRONE ]
M. Sidibe, H. Koumaras, I. KofIer, A. Mehaoua, A. Kourtis, and C. Timmerer, “A novel monitoring architecture for media services adaptation based on network QoS to perceived
QoS mapping”, Journal on Signal, Image and Video Processing, Springer, vol. 2, no. 4, Dec.
2008. [ PDF ] [Ack: ENTHRONE ]
C. Timmerer, “Multimedia Adaptation Decision-Taking”, short article, in: Borko Furht (ed.),
Encyclopedia of Multimedia, 2nd edition, Springer, pp. 485-487, October 2008. [ PDF ]
D. Jannach, C. Timmerer, and H. Hellwagner, “Knowledge-based Multimedia Adaptation
Decision-Taking”, long article, in: Borko Furht (ed.), Encyclopedia of Multimedia, 2nd edition,
Springer, pp. 391-394, October 2008. [ PDF ]
I. Kofler, C. Timmerer, and H. Hellwagner, “Optimization-based Multimedia Adaptation
Decision-Taking”, long article, in: Borko Furht (ed.), Encyclopedia of Multimedia, 2nd edition,
Springer, pp. 699-704, October 2008. [ PDF ]
C. Timmerer, A. Vetro, and H. Hellwagner, “MPEG-21 Digital Item Adaptation”, long article, in: Borko Furht (ed.), Encyclopedia of Multimedia, 2nd edition, Springer, pp. 457-463,
October 2008. [ PDF ]
C. Timmerer and H. Hellwagner, “MPEG-21 Multimedia Framework”, long article, in: Borko
Furht (ed.), Encyclopedia of Multimedia, 2nd edition, Springer, pp. 463-469, October 2008.
[ PDF ]
C. Timmerer, M. Ransburg, and H. Hellwagner, “Generic Multimedia Content Adaptation”, long article, in: Borko Furht (ed.), Encyclopedia of Multimedia, 2nd edition, Springer, pp. 263-
271, October 2008. [ PDF ]
C. Timmerer, M. T. Andrade, P. Carvalho, D. Rogai, and G. Cordara, “The Semantics of MPEG-
21 Digital Items Revisited”, Proceedings of ACM Multimedia 2008 2nd International
Workshop on the Many Faces of Multimedia Semantics, Vancouver, Canada, October 27 -
November 1, 2008. [ PDF ] [ SlideShare ] [Ack: ENTHRONE ]

R. Kuschnig, I. Kofler, M. Ransburg, H. Hellwagner, “Design options and comparison of innetwork H.264/SVC adaptation”, Journal of Visual Communication and Image
Representation, Sept. 2008. [ PDF ] [Ack: ENTHRONE ]
R. Bolla, M. Repetto, S. Chessa, F. Furfari, M. Asbach, M. Wien, B. Reiterer, H. Hellwagner, R.
Van de Walle, S. De Zutter, “A Context-Aware Architecture for QoS and Transcoding
Management of Multimedia Streams in Smart Homes”, Proceedings of the 13th IEEE
International Conference on Emerging Technologies and Factory Automation (ETFA08),
Hamburg, Germany, Sept. 2008. [ PDF ]
M. Eberhard, L. Celetto, C. Timmerer, E. Quacchio, and H. Hellwagner, “An Interoperable
Streaming Framework for Scalable Video Coding based on MPEG-21”, STreaming Day'08
Proceedings, Parma, Italy, September 2008. [ PDF ] [Ack: P2P-Next ]
M. Quaritsch, E. Stojanovski, C. Bettstetter, G. Friedrich, H. Hellwagner, B. Rinner, M.
Hofbauer, M. Shah, “Collaborative Microdrones: Applications and Research Challenges”,
Proceedings of the Second International Conference on Autonomic Computing and
Communication Systems (AUTONOMICS 2008), Turin, Italy, Sept. 2008. [ PDF ]
R. Tusch, M. Jakab, J. Köpke, A. Krätschmer, M. Kropfberger, S. Kuchler, M. Ofner, H.
Hellwagner, L. Böszörmenyi, “Context-Aware UPnP-AV Services for Adaptive Home
Multimedia Systems”, International Journal of Digital Multimedia Broadcasting, vol. 2008,
Article ID 835438, 12 pages, 2008. [ PDF ]
B. Reiterer, C. Concolato, J. Lachner, J. Le Feuvre, J.-C. Moissinac, S. Lenzi, S. Chessa, E.
Fernández Ferrá, J. J. González Menaya, H. Hellwagner, “User-centric Universal Multimedia
Access in Home Networks”, The Visual Computer, International Journal of Computer
Graphics, Special Issue “CGI’2008 Conference”, vol. 24, Number 7-9, pp. 837-845, July 2008.
[ PDF ]
C. Timmerer, M. Ransburg, I. Kofler, H. Hellwagner, P. Souto, M. Andrade, P. Carvalho, H.
Castro, M. Sidibé, A. Mehaoua, L. Fang, A. Lindsay, M. Mackay, A. Lugmayr, and B. Feiten,
“An Integrated Management Supervisor for End-to-End Management of Heterogeneous
Contents, Networks, and Terminals enabling Quality of Service”, Proceedings of the 2nd
European Symposium on Mobile Media Delivery (EUMOB) 2008, Oulu, Finland, July 2008.
[ PDF ] [ SlideShare ] [Ack: ENTHRONE ]
M. Eberhard, L. Celetto, C. Timmerer, E. Quacchio, H. Hellwagner, and F. Rovati, “An
Interoperable Streaming Framework for Scalable Video Coding based on MPEG-21”,
Proceedings of the 5th IET Visual Information Engineering Conference Conference (VIE’08),
Xi’an, China, July 2008. [ PDF ] [Ack: P2P-Next ]
J. Köpke, R. Tusch, H. Hellwagner, L. Böszörmenyi, “Context-aware Hoarding of Multimedia
Content in a Large-scale Tour Guide Scenario”, Proceedings of the International Conference
on Signal Processing and Multimedia Applications (SIGMAP 2008), Porto, Portugal, July 2008.
M. Eberhard, L. Celetto, C. Timmerer, E. Quacchio, H. Hellwagner, and F. Rovati, “An
Interoperable Multimedia Delivery Framework for Scalable Video Coding based on MPEG-21

Digital Item Adaptation”, Proceedings of the IEEE International Conference on Multimedia
and Expo 2008 (ICME’08), Hannover, Germany, June 2008. [ PDF ] [Ack: P2P-Next ]
C. Timmerer, Generic Adaptation of Scalable Multimedia Resources, VDM Verlag, May 2008.
I. Kofler, M. Prangl, R. Kuschnig, and H. Hellwagner, "An H.264/SVC-based adaptation proxy on a WiFi router”, Proceedings of the 18th International Workshop on Network and
Operating Systems Support for Digital Audio and Video (NOSSDAV 2008), Braunschweig,
Germany, May 2008. [ PDF ] [Ack: ENTHRONE ]
M. Mackay, M. Ransburg, D. Hutchison, and H. Hellwagner, "Combined Adaptation and
Caching of MPEG-4 SVC in Streaming Scenarios", Proc. of the 9th International Workshop on
Image Analysis for Multimedia Interactive Services (WIAMIS 2008), Klagenfurt, Austria, May
2008. [ PDF ] [Ack: ENTHRONE ]
M. Ransburg, H, Gressl, and H. Hellwagner, "Efficient Transformation of MPEG-21 Metadata for Codec-agnostic Adaptation in Real-time Streaming Scenarios", Proc. of the 9th
International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS
2008), Klagenfurt, Austria, May 2008. [ PDF ] [Ack: ENTHRONE ]
M. Eberhard, L. Celetto, C. Timmerer, E. Quacchio, and H. Hellwagner: "Performance Analysis of Scalable Video Adaptation: Generic versus Specific Approach", Proc. of the 9th
International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS
2008), Klagenfurt, Austria, May 2008. [ PDF ] [Ack: P2P-Next ]
F. Lopez, D. Jannach, J. Martinez, C. Timmerer, H. Hellwagner, and N. Garcia: "Multimedia
Adaptation Decisions Modelled as Non-Deterministic Operations", Proc. of the 9th
International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS
2008), Klagenfurt, Austria, May 2008. [ PDF ] [Ack: ENTHRONE ]
J. Lachner and H. Hellwagner: “Information and Communication Systems for Mobile
Emergency Response”, In: R. Kaschek, C. Kop, C. Steinberger, G. Fliedl (Eds.), Information
Systems and e-Business Technologies (Proc. 2nd International United Information Systems
Conference, UNISCON 2008, Klagenfurt, Austria, April 2008 ), LNBIP 5, Springer 2008. [ PDF ]
C. Timmerer, V. H. Ortega, J. M. González, and A. León: "Measuring Quality of Experience for
MPEG-21-based Cross-Layer Multimedia Content Adaptation", to appear in Proceedings of
the 1st ACS/IEEE International Workshop on Wireless Internet Services (WISe'08), Doha,
Qatar, April 1-4, 2008. [ PDF ] [Ack: ENTHRONE ]
M. Prangl, I. Kofler, and H. Hellwagner: "Towards QoS Improvements of TCP-based Media
Delivery", Proceedings of the 4th International Conference on Networking and Services
(ICNS'08), Gosier, Guadeloupe, March 16-21, 2008. [ PDF ] [Ack: ENTHRONE ]
M. Prangl, I. Kofler, and H. Hellwagner: "An MPEG-21-driven Utility-based Multimedia
Adaptation Decision Taking Web Service", Proceedings of the 1st International Conference on
Ambient Media and Systems (Ambi-sys'08), Quebec, Canada, February 11-14, 2008. [ PDF ]
[Ack: ENTHRONE ]

H. Hellwagner: “Challenges toward Adaptive Behavior of Distributed Multimedia Systems”,
In: G. E. Lasker and J. Pfalzgraf (Eds.), Advances in Multiagent Systems, Robotics and
Cybernetics: Theory and Practice (Volume II). Published by: The International Institute for
Advanced Studies in Systems Research and Cybernetics (Tecumseh, Canada), ISBN 978-1-
897233-61-0, 2008. [ PDF ]
J. Lachner, A. Lorenz, B. Reiterer, A. Zimmermann, and H. Hellwagner: “Challenges toward
User-centric Multimedia”, Proc. 2nd International Workshop on Semantic Media Adaptation
and Personalization (SMAP 2007), London, UK, Dec. 2007. [ PDF ]
I. Kofler, C. Timmerer, H. Hellwagner, and T. Ahmed: “Towards MPEG-21-based Cross-layer
Multimedia Content Adaptation”, Proc. 2nd International Workshop on Semantic Media
Adaptation and Personalization (SMAP 2007), London, UK, Dec. 2007. [ PDF ] [Ack:
ENTHRONE ]
D. Van Deursen, S. De Bruyne, W. Van Lancker, W. De Neve, D. De Schrijver, H. Hellwagner, and R. Van de Walle: “MuMiVA: a Multimedia Delivery Platform using Format-agnostic, XMLdriven Content Adaptation”, Proc. IEEE International Symposium on Multimedia 2007
(ISM2007), Taichung, Taiwan, R.O.C., Dec. 2007. [ PDF ]
L. Böszörmenyi, H. Hellwagner, and P. Schojer: “Metadata-driven Optimal Transcoding in a
Multimedia Proxy”, Multimedia Systems, Springer Verlag, vol. 13, no. 1, pp. 51-68, Sept.
2007.
D. Jannach and K. Leopold: “Knowledge-based Multimedia Adaptation for Ubiquitous
Multimedia Consumption”, Journal of Network and Computer Applications, Special issue on
Intelligence-based adaptation for ubiquitous multimedia communications, vol. 30, issue 3, pp. 958-982, Aug. 2007.
M. Prangl, R. Bachlechner, and H. Hellwagner: “A Hybrid Recommender Strategy for
Personalized Utility-based Cross-modal Multimedia Adaptation”, Proc. IEEE International
Conference on Multimedia and Expo (ICME 2007), pp. 1707-1710, Beijing, China, Jul. 2007.
[ PDF ]
M. Prangl, T. Szkaliczki, and H. Hellwagner: “A Framework for Utility-based Multimedia
Adaptation”, IEEE Transactions on Circuits and Systems for Video Technology, vol. 17, no. 6, pp. 719-728, Jun. 2007. [ PDF ]
M. Prangl and H. Hellwagner: “A Framework for Personalized Utility-aware IP-based
Multimedia Consumption”, IEEE International Symposium on a World of Wireless, Mobile
and Multimedia Networks (WOWMOM), Jun. 2007. [ PDF ]
M. Ransburg, C. Timmerer, S. Devillers, and H. Hellwagner: “Design and Evaluation of a
Metadata-Driven Adaptation Node”, Proc. 8th International Workshop on Image Analysis for

Multimedia Interactive Services (WIAMIS 2007), pp. 83-86, Santorini, Greece, Jun. 2007.
[ PDF ] [Ack: ENTHRONE ]
M. Ransburg, C. Timmerer, H. Hellwagner, and S. Devillers: “Processing and Delivery of
Multimedia Metadata for Multimedia Content Streaming”, Proc. Workshop on Multimedia
Semantics - The Role of Metadata (WMSRM 2007), Aachen, Germany, Mar. 2007. [ PDF ] [Ack:
ENTHRONE ]
M. Kropfberger, R. Tusch, M. Jakab, J. Köpke, M. Ofner, H. Hellwagner, and L. Böszörmenyi:
“A Multimedia-based Guidance System for Various Consumer Devices”, Proc. Third
International Conference on Web Information Systems and Technologies (WEBIST 2007), pp.
83-90, Barcelona, Spain, Mar. 2007.
H. Eidenberger, S. Boll, S. Christodoulakis, D. Divotkey, K. Leopold, A. Martin, A. Perego, A.
Scherp, C. Tsinaraki: “Integrated Authoring, Annotation, Retrieval, Adaptation,
Personalization, and Delivery for Multimedia”, Proc. First International DELOS Conference, pp. 87-103, Pisa, Italy, Feb. 2007, Springer LNCS Vol. 4877. [ PDF ]
M. Jakab, M. Kropfberger, R. Tusch, H. Hellwagner, and L. Böszörmenyi: “Metadata
Integration and Media Transcoding in Universal Plug-and-Play (UPnP) Enabled Networks”,
Proc. 15 th Euromicro International Conference on Parallel, Distributed and Network-based
Processing (PDP 2007), pp. 363-372, Naples, Italy, Feb. 2007.
I. Kofler, C. Timmerer, H. Hellwagner, A. Hutter, and F. Sanahuja: “Efficient MPEG-21-based
Adaptation Decision-Taking for Scalable Multimedia Content”, Proc. 14th SPIE Annual
Electronic Imaging Conference – Multimedia Computing and Networking (MMCN 2007), San
Jose, CA, USA, Jan./Feb. 2007. [ PDF ] [Ack: ENTHRONE ]
A. Vetro, C. Timmerer, and S. Devillers: “Digital Item Adaptation - Tools for Universal
Multimedia Access”, in: I. Burnett, F. Pereira, R. Van de Walle, and R. Koenen (eds.), The
MPEG-21 Book, John Wiley and Sons Ltd, pp. 243-281, 2006.
C. Timmerer, S. Devillers, and A. Vetro: “Digital Item Adaptation - Coding Format
Independence”, in: I. Burnett, F. Pereira, R. Van de Walle, and R. Koenen (eds.), The MPEG-
21 Book, John Wiley and Sons Ltd, pp. 282-331, 2006.
I. Kofler and H. Hellwagner: “MPEG-21-based Cross-Resource Adaptation Decision-Taking”,
Proc. of the 2nd International Conference on Automated Production of Cross Media Content for Multi-channel Distribution (AXMEDIS2006), Leeds, UK, pp. 207-214, Nov. 2006. [ PDF ]
C. Poppe, M. Ransburg, S. De Zutter, and R. Van de Walle: “Interoperable Affective Context
Collection using MPEG-21”, Proc. International Conference on Wireless, Mobile & Multimedia
Networks (ICWMMN 2006), Hangzhou, China, Nov. 2006. [ PDF ]
M. Santner, R. Tusch, M. Kropfberger, L. Böszörmenyi, and H. Hellwagner: “Ein
Ortserkennungssystem für mobile Touristenführer”, Proc. DACH Mobility 2006, pp. 84-98,
Munich, Germany, Oct. 2006.

R. De Sutter, S. Lerouge, P. De Neve, C. Timmerer, H. Hellwagner, and R. Van de Walle:
“Comparison of XML serializations: cost benefit vs. complexity”, Multimedia Systems,
Springer Verlag, vol. 12, no. 2, pp. 101-115, Oct. 2006. [ PDF ]
M. Ransburg, R. Cazoulat, B. Pellan, C. Concolato, S. De Zutter, C. Poppe, A. Hutter, H.
Hellwagner, and R. Van de Walle: “Dynamic and Distributed Adaptation of Scalable
Multimedia Content in a Context-Aware Environment”, Proc. European Symposium on
Mobile Media Delivery (EuMob 2006), Alghero, Italy, Sept. 2006. [ PDF ]
T. Szkaliczki and M. Prangl: “Quality and Utility Modelling for Universal Multimedia Access
(UMA)”. Proc. HUBUSKA 4th Open Workshop on Semantic Web and Knowledge Technologies
Applications, pp. 100-116, Varna, Bulgaria, Aug. 2006.
M. Prangl, H. Hellwagner, and T. Szkaliczki: “Fast adaptation decision taking for cross-modal multimedia content adaptation“, Proc. IEEE Int‘l. Conf. on Multimedia and Expo (ICME 2006), pp. 137-140, Toronto, Canada, Jul. 2006. [ PDF ]
M. Prangl, C. Timmerer, and H. Hellwagner: “Real-time DVB-based MPEG-21 Digital Item
Adaptation for Live Universal Multimedia Access”, Proc. 48th International Symposium
ELMAR 2005, focused on Multimedia Signal Processing and Communications, pp. 297-300,
Zadar, Croatia, Jun. 2006. [ PDF ]
D. Jannach, K. Leopold, C. Timmerer, and H. Hellwagner: “A Knowledge-based Framework for
Multimedia Adaptation”, Applied Intelligence, Special Issue: Innovations in Applied Artificial
Intelligence (best papers from IEA/AIE 2004), Springer Verlag, vol. 24, no. 2, pp. 109-125,
Apr. 2006. [ PDF ]
M. Prangl, H. Hellwagner, and T. Szkaliczki: “A Semantic-based Multi-modal Utility Approach
For Multimedia Adaptation”, Proc. 7th International Workshop on Image Analysis for
Multimedia Services (WIAMIS 2006), pp. 67-70, Incheon, Korea, Apr. 2006. [ PDF ]
C. Timmerer, T. DeMartini, and H. Hellwagner: “The MPEG-21 Multimedia Framework:
Conversions and Permissions”, Proc. DACH Security 2006, pp. 225-235, Düsseldorf, Germany,
Mar. 2006. [ PDF ]
M. Prangl, H. Hellwagner, H. Bischof, and T. Szkaliczki: “Realtime automatic metal extraction of medical X-ray images for contrast improvement”, Proc. SPIE Symposium on Medical
Imaging 2006, vol. 6144, San Diego, California, USA, Mar. 2006.
T. Guenkova-Luy, A. Schorr, F. Hauck, M. Gómez, C. Timmerer, and Ingo Wolf: “Advanced
Multimedia Management – Control Model and Content Adaptation”, Proc. IASTED
International Conference on Internet and Multimedia Systems and Applications (EuroIMSA
2006), Innsbruck, Austria, Feb. 2006. [ PDF ]
P. Schojer, L. Böszörmenyi, and H. Hellwagner: “QBIX-G – A Transcoding Multimedia Proxy”,
Proc. 13th SPIE/IS&T Annual Electronic Imaging Conference, Multimedia Computing and
Networking, San Jose, CA, USA, Jan. 2006.

H. Hellwagner: “Arbeitsspeicher- und Bussysteme”, in: P. Rechenberg and G. Pomberger
(Hrsg.): Informatik-Handbuch. 4. Auflage, Hanser Verlag 2005.
A. Bode and H. Hellwagner: “Leistungsbewertung und Fehlertoleranz”, in: P. Rechenberg and
G. Pomberger (Hrsg.): Informatik-Handbuch. 4. Auflage, Hanser Verlag 2005.
C. Timmerer, I. Kofler, J. Liegl, and H. Hellwagner: “An Evaluation of Existing Metadata
Compression and Encoding Technologies for MPEG-21 Applications”, Proc. First IEEE
International Workshop on Multimedia Information Processing and Retrieval (IEEE-MIPR
2005), pp. 534-539, Irvine, California, USA, Dec. 2005. [ PDF ]
H. Hellwagner and C. Timmerer: “MPEG Standards Enabling Universal Multimedia Access,
Tutorial Description”, Proc. First International Conference on Automated Production of Cross
Media Content for Multi-channel Distribution (AXMEDIS 2005), Florence, Italy, Nov./Dec.
2005. [ PDF ]
M. Kropfberger and H. Hellwagner: “Combining Stream Switching with Fine-grained Intrastream Adaptation for Adaptive Video Streaming”, Proc. IEEE International Workshop on
Multimedia Signal Processing (MMSP 2005), Shanghai, China, Oct./Nov. 2005.
C. Timmerer, T. Frank, and H. Hellwagner: “Efficient processing of MPEG-21 metadata in the binary domain”, Proc. SPIE International Symposium on Multimedia Systems and Applications
VIII (ITCom 2005), Boston, Massachusetts, USA, Oct. 2005. [ PDF ]
A. Hutter, P. Amon, G. Panis, E. Delfosse, M. Ransburg, and H. Hellwagner: “Automatic
Adaptation of Streaming Multimedia Content in a Dynamic and Distributed Environment”,
Proc. International Conference on Image Processing (ICIP 2005), Genova, Italy, Sept. 2005.
[ PDF ]
A. Vetro and C. Timmerer: “Digital Item Adaptation: Overview of Standardization and
Research Activities”, IEEE Transactions on Multimedia, Special Issue on MPEG-21, vol. 7, no.
3, pp. 418-426, Jun. 2005. [ PDF ]
S. Devillers, C. Timmerer, J. Heuer, and H. Hellwagner: “Bitstream Syntax Description-Based
Adaptation in Streaming and Constrained Environments”, IEEE Transactions on Multimedia,
Special Issue on MPEG-21, vol. 7, no. 3, pp. 463-470, Jun. 2005. [ PDF ]
P. Schojer, L. Böszörmenyi, and H. Hellwagner: “An Adaptive Standard Meta-data Aware
Proxy Cache”, Scalable Computing: Practice and Experience, Special Issue on Distributed and
Parallel Systems, vol. 6, no. 2, pp. 93–104, Jun. 2005.
M. Ransburg, C. Timmerer, and H. Hellwagner: “Transport Mechanisms for Metadata-driven
Distributed Multimedia Adaptation”, Proc. First International Conference on Multimedia
Services Access Networks (MSAN 2005), Orlando, Florida, USA, Jun. 2005. [ PDF ]

C. Timmerer, P. Lederer, and H. Kosch, “Transforming MPEG-21 generic Bitstream Syntax
Descriptions within the Binary Domain”, Proc. Fourth International Workshop on Content-
Based Multimedia Indexing (CBMI 2005), Riga, Latvia, Jun. 2005. [ PDF ]
M. Prangl, C. Timmerer, K. Leopold, and H. Hellwagner: “DVB-based MPEG-21 Digital Items for Adaptive Multimedia Streaming”, Proc. 47th International Symposium ELMAR-2005,
focused on Multimedia Systems and Applications, pp. 135-138, Zadar, Croatia, Jun. 2005.
[ PDF ]
D. Jannach and K. Leopold: “A Multimedia Adaptation Framework based on Semantic Web
Technology”. Workshop Notes III, 2nd European Semantic Web Conference 2005, pp. 61-68,
Heraklion, Greece, May/Jun. 2005.
C. Timmerer, G. Panis, and E. Delfosse: “Piece-wise Multimedia Content Adaptation in
Streaming and Constrained Environments”, Invited Paper, Proc. 6th International Workshop
on Image Analysis for Multimedia Interactive Services (WIAMIS 2005), Montreux,
Switzerland, Apr. 2005. [ PDF ]
R. De Sutter, C. Timmerer, H. Hellwagner, and R. Van de Walle: “Multimedia Metadata
Processing: A Format Independent Approach”, Proc. IASTED International Conference on
Internet and Multimedia Systems and Applications (EuroIMSA 2005), Grindelwald,
Switzerland, Feb. 2005. [ PDF ]
M. Ransburg and H. Hellwagner: “Generic Streaming of Multimedia Content”, Proc. IASTED
International Conference on Internet and Multimedia Systems and Applications (EuroIMSA
2005), Grindelwald, Switzerland, Feb. 2005. [ PDF ]
C. Timmerer and H. Hellwagner: “Interoperable Adaptive Multimedia Communication”, IEEE
Multimedia Magazine, vol. 12, no. 1, pp. 74-79, Jan.-Mar. 2005. [ PDF ]
K. Leopold, D. Jannach, and H. Hellwagner: “A Knowledge and Component Based Multimedia
Adaptation Framework”, Proc. IEEE Sixth International Symposium on Multimedia Software
Engineering (MSE), Miami, Florida, USA, Dec. 2004.
D. Jannach, K. Leopold, C. Timmerer, and H. Hellwagner: “Toward Semantic Web Services for
Multimedia Adaptation”, Proc. Fifth International Conference on Web Information Systems
Engineering (WISE 2004), Lecturer Notes in Computer Science vol. 3306, pp.
641-652,
Brisbane, Australia, Nov. 2004. [ PDF ]
R. De Sutter, C. Timmerer, H. Hellwagner, and R. Van de Walle: “Evaluation of Models for
Parsing Binary Encoded XML-based Metadata”, Proc. International Symposium on Intelligent
Signal Processing and Communication Systems (ISPACS2004), pp. 419-424, Seoul, Korea, Nov.
2004. [ PDF ]
K. Leopold, D. Jannach, and H. Hellwagner: “Knowledge-based Media Adaptation”, Proc. SPIE
International Symposium ITCom 2004 on Internet Multimedia Management Systems IV, vol.
5601, Philadelphia, Pennsylvania, USA, Oct. 2004.

M. Kropfberger, K. Leopold, and H. Hellwagner: “Quality variations of different priority-based temporal video adaptation algorithms”, Proc. IEEE International Workshop on Multimedia
and Signal Processing (MMSP), Siena, Italy, Sept./Oct. 2004.
C. Timmerer and H. Hellwagner: “Interoperable multimediale Kommunikation im Internet mittels MPEG-21 Digital Item Adaptation”, In: Mobile Computing und Medienkommunikation
im Internet (MCMI’04), INFORMATIK 2004 – Informatik verbindet, pp. 301-305, Ulm,
Germany, Sept. 2004. [ PDF ]
M. Kropfberger and H. Hellwagner: “Evaluation of RTP Immediate Feedback and
Retransmission Extensions”, Proc. IEEE International Conference on Multimedia and Expo
(ICME 2004), Taipei, Taiwan, June 2004.
D. Jannach, K. Leopold, and H. Hellwagner: “An Extensible Framework for Knowledge Based
Multimedia Adaptation”, Proc. 17th International Conference on Industrial & Engineering
Applications of Artificial Intelligence & Expert Systems, Ottawa, Canada, May 2004.
D. Jannach, K. Leopold, C. Timmerer, and H. Hellwagner: “A Knowledge Based Approach for
Multi-step Media Adaptation”, Proc. 5th International Workshop on Image Analysis for
Multimedia Interactive Services (WIAMIS 2004), Lisbon, Portugal, April 2004. [ PDF ]
R. Tusch, L. Böszörményi, B. Goldschmidt, H. Hellwagner, and P. Schojer: “Offensive and
Defensive Adaptation in Distributed Multimedia Systems”, Computer Science and
Information Systems (ComSIS), vol. 1, no. 1, pp. 49-77, Feb. 2004.
P. Schojer, L. Böszörmenyi, H. Hellwagner, B. Penz, and S. Podlipnig: “Architecture of a
Quality Based Intelligent Proxy (QBIX) for MPEG-4 Videos”, Proc. 2003 ACM World Wide Web
Conference (WWW'2003), pp. 394-402, May 2003.
H. Kosch, L. Böszörményi, and H. Hellwagner (eds.): Euro-Par 2003. Parallel Processing. 9th
International Euro-Par Conference, Klagenfurt, Austria, August 26-29, 2003. Proceedings,
Lecture Notes in Computer Science vol. 2790. Springer Verlag. 1320 pages. Aug. 2003.
L. Böszörményi, H. Hellwagner, H. Kosch, M. Libsie, and S. Podlipnig: “Metadata Driven
Adaptation in the ADMITS Project”, EURASIP Signal Processing: Image Communication
Journal, Special Issue on Multimedia Adaptation, vol. 18, no. 8, pp. 749-766, Sept. 2003.
G. Panis, A. Hutter, J. Heuer, H. Hellwagner, H. Kosch, C. Timmerer, S. Devillers, and M.
Amielh: “Bitstream Syntax Description: A Tool for Multimedia Resource Adaptation within
MPEG-21”, EURASIP Signal Processing: Image Communication Journal, Special Issue on
Multimedia Adaptation, vol. 18, no. 8, pp. 721-747, Sept. 2003. [ PDF ]
C. Timmerer, G. Panis, H. Kosch, J. Heuer, H. Hellwagner, and A. Hutter: “Coding Format
Independent Multimedia Content Adaptation Using XML”, Proc. SPIE International
Symposium on Internet Multimedia Management Systems IV, vol. 5242, Orlando, Florida,
USA, Sept. 2003. [ PDF ]

K. Leopold, H. Hellwagner, and M. Kropfberger: “QCTVA - Quality Controlled Temporal Video
Adaptation”, Proc. SPIE International Symposium ITCom 2003 on Internet Multimedia
Management Systems IV, vol. 5242, Orlando, Florida, USA, Sept. 2003.
M. Ohlenroth and H. Hellwagner: “A Protocol for Adaptation-aware Multimedia Streaming”,
Proc. International Conference on Multimedia and Expo (ICME 2003), pp. 661-664, Baltimore,
Maryland, USA, Jul. 2003.
L. Böszörmenyi, M. Döller, H. Hellwagner, H. Kosch, M. Libsie, and P. Schojer:
“Comprehensive Treatment of Adaptation in Distributed Multimedia Systems in the ADMITS
Project”, Proc. 10th ACM International Conference on Multimedia, ACM Press, Nov./Dec.
2002.
P. Schojer, L. Böszörmenyi, and H. Hellwagner: “An Adaptive MPEG-4 Proxy Cache", Proc.
International Conference on Distributed and Parallel Systems (DAPSYS 2002), pp. 149-156,
Linz, Austria, Sept./Oct. 2002.
M. Ohlenroth and H. Hellwagner: “RTP-Packetization of MPEG-4 Elementary Streams”, Proc.
International Conference on Multimedia and Expo (ICME 2002), pp. 465-468, Lausanne,
Switzerland, Aug. 2002.
B. Csizmazia and H. Hellwagner: “The design and implementation of the A2QM3 system”,
Proc. Fourth Annual International Workshop on Active Middleware Services (AMS 2002),
Edinburgh, UK, Jul. 2002.
H. Hellwagner and M. Ohlenroth: “VI Architecture Communication Features and
Performance on the Giganet Cluster LAN”, Future Generation Computer Systems, vol. 18, no.
3, pp. 421-433, Jan. 2002.
H. Kosch, L. Böszörmenyi, and H. Hellwagner: “Modeling Quality Adaptation Capabilities of
Audio-Visual Data”, Proc. 12th International Workshop on Database and Expert Systems
Applications (DEXA 2001), pp. 141-145, Munich, Germany, Sept. 2001.
L. Böszörmenyi, H. Hellwagner, and H. Kosch: “Multimedia Technologies for E-Business
Systems and Processes”, Proc. Elektronische Geschäftsprozesse (E-Business Processes), pp.
471-481, Sept. 2001.
H. Hellwagner and E. Kargl: “A Cluster-Based QoS Testbed for Multimedia Communications”,
Proc. 5th World Multiconference on Systemics, Cybernetics and Informatics, Orlando, Florida,
USA, Jul. 2001.
H. Hellwagner, M. Lachowitz and M. Ohlenroth: “Exploring the Performance of VI
Architecture Communication Features in the Giganet Cluster LAN”, Proc. International
Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA
2001), Las Vegas, Nevada, USA, Jun. 2001.