Auszeichnungen von ITEC Mitarbeitern

Christian Timmerer
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Christian Doppler Lab ATHENA papers wins best paper award at QoMEX 2020

Title: Objective and Subjective QoE Evaluation for Adaptive Point Cloud Streaming

Authors: Jeroen van der Hooft (Ghent University), Maria Torres Vega (Ghent University), Christian Timmerer (Alpen-Adria-Universität Klagenfurt, Bitmovin), Ali C. Begen (Ozyegin University, Networked Media), Filip De Turck (Ghent University), Raimund Schatz (Alpen-Adria Universität Klagenfurt & AIT Austrian Institute of Technology, Austria)

Abstract: Volumetric media has the potential to provide the six degrees of freedom (6DoF) required by truly immersive media. However, achieving 6DoF requires ultra-high bandwidth transmissions, which real-world wide area networks cannot provide economically. Therefore, recent efforts have started to target efficient delivery of volumetric media, using a combination of compression and adaptive streaming techniques. It remains, however, unclear how the effects of such techniques on the user perceived quality can be accurately evaluated. In this paper, we present the results of an extensive objective and subjective quality of experience (QoE) evaluation of volumetric 6DoF streaming. We use PCC-DASH, a standards-compliant means for HTTP adaptive streaming of scenes comprising multiple dynamic point cloud objects. By means of a thorough analysis we investigate the perceived quality impact of the available bandwidth, rate adaptation algorithm, viewport prediction strategy and user’s motion within the scene. We determine which of these aspects has more impact on the user’s QoE, and to what extent subjective and objective assessments are aligned.

Keywords: Volumetric Media; HTTP Adaptive Streaming; 6DoF; MPEG V-PCC; QoE Assessment; Objective Metrics

International Conference on Quality of Multimedia Experience (QoMEX)
May 26-28, 2020, Athlone, Ireland
http://qomex2020.ie/

Christian Timmerer
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ACM NOSSDAV’19 paper on Bandwidth Prediction in Low-Latency Chunked Streaming received Excellence in DASH award at ACM MMSys 2019

Authors: Abdelhak Bentaleb (National University of Singapore), Christian Timmerer (Alpen-Adria Universität & Bitmovin Inc,), Ali C. Begen(Ozyegin University), and Roger Zimmermann (National University of Singapore)

Abstract: HTTP adaptive streaming (HAS) with chunked transfer encoding can be used to reduce latency without sacrificing the coding ef- ficiency. While this allows a media segment to be generated and delivered at the same time, it also causes grossly inaccurate band- width measurements, leading to incorrect bitrate selections. To overcome this effect, we design a novel Adaptive bitrate scheme for Chunked Transfer Encoding (ACTE) that leverages the unique nature of chunk downloads. It uses a sliding window to accurately measure the available bandwidth and an online linear adaptive filter to predict the available bandwidth into the future. Results show that ACTE achieves 96% measurement accuracy, which translates to a 64% reduction in stalls and a 27% increase in video quality.

Links:

– Slides/PDF: https://multimediacommunication.blogspot.com/2019/04/acm-nossdav19-bandwidth-prediction-in.html

– DASH Industry Forum Excellence in DASH Award at ACM MMSys 2019: https://multimediacommunication.blogspot.com/2019/06/dash-if-awarded-excellence-in-dash.html

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KWF hat fünf Projekte im Bereich Technologische Dienstleistungen und Informationstechnologien ausgezeichnet

KLEINE_2018.12.12_SEITE_32-33

ITEC alumnus Daniel Posch awarded with “Carinthian Digitization Scholarship”

ITEC alumnus Daniel Posch wins the digitization scholarship (Digitalisierungsstipendium des Landes Kärnten)  of the Province of Carinthia within the category “Dissertation” (Supervision: Prof. Hellwagner). “

Klaus Schöffmann awarded with the Carinthian “Kultur-Förderpreis”

Klaus Schöffmann was awarded with the Carinthian “Kultur-Förderpreis” (area technical sciences).  More information is available HERE and HERE. Klaus will receive the prize officially on December 10, 2018 by the carinthian governor.

Kultur-Förderpreis

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DI Dr. Daniel Posch short-listed in the “Heinz Zemanek Dissertation Award”

Daniel, our former team-member, was one of the 2018 candidates for the Heinz Zemanek Dissertation Award. He presented his dissertation (“Towards Effective Multimedia Dissemination in Information-Centric Networks”, supervised by Prof. Hermann Hellwagner) on May 30, 2018. Unfortunately he did not receive the award it is a great distinction to be among the very best.

Towards Effective Multimedia Dissemination in Information-Centric Networks

Hearing zum Heinz Zemanek Preis 2018

 

2 ITEC members are among the 100 distinguished TPC members of IEEE Infocom 2018!

Based on their excellent performance in the review process Hermann Hellwagner & Christian Timmerer are among the 100 distinguished TPC members of IEEE Infocom 2018!
Congratulations! http://infocom2018.ieee-infocom.org/committee/tpc-members

Andreas Leibetseder
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Andreas Leibetseder received Best Paper Award @ CARE Workshop (main conference: MICCAI 2017)

At the CARE Workshop within the MICCAI 2017 (20th International Conference on Medical Image Computing and Computer Assisted Intervention 2017), held in Quebec from September 10-14, Andreas Leibetseder received the Best Paper Award for the paper „Image-Based Smoke Detection in Laparoscopic Videos“, written together with Manfred Jürgen Primus, Stefan Petscharnig and Klaus Schöffmann. Congratulations!