Category Archives: ATHENA

Doctoral Student Positions @ ATHENA

Posted on August 10, 2022 by

The Institute of Information Technology at the Alpen-Adria-Universität Klagenfurt invites applications for: Doctoral Student Positions (100% employment; all genders welcome) within the Christian Doppler (CD) Pilot Laboratory ATHENA “Adaptive Streaming over HTTP and Emerging Networked Multimedia Services” The expected start … Continue reading →

Posted in ATHENA | Comments Off on Doctoral Student Positions @ ATHENA

Secure Reversible Data Hiding in Encrypted Images based on Classification Encryption Difference

Posted on August 10, 2022 by

IEEE 24th Workshop on MultiMedia Signal Processing (MMSP) September 26-28, 2022 | Shanghai, China [PDF] Lingfeng Qu (Southwest Jiaotong University),  Hadi Amirpour (Alpen-Adria-Universität Klagenfurt),   Mohammad Ghanbari (University of Essex, UK), and Christian Timmerer (Alpen-Adria-Universität Klagenfurt), Hongjie He (Southwest Jiaotong University) Abstract: This paper introduces an algorithm to … Continue reading →

Posted in ATHENA | Comments Off on Secure Reversible Data Hiding in Encrypted Images based on Classification Encryption Difference

Segment Prefetching at the Edge for Adaptive Video Streaming

Posted on August 4, 2022 by

The Fourteen International Workshop on Selected Topics in Wireless and Mobile computing (STWiMob 2022) October 10-12, 2022 | Thessaloniki, Greece Conference Website [PDF] Jesús Aguilar Armijo (Alpen-Adria-Universität Klagenfurt), Christian Timmerer (Alpen-Adria-Universität Klagenfurt) and Hermann Hellwagner (Alpen-Adria-Universität Klagenfurt) Abstract: Segment prefetching is a technique that … Continue reading →

Posted in ATHENA | Comments Off on Segment Prefetching at the Edge for Adaptive Video Streaming

Interns at ATHENA (Summer 2022)

Posted on August 4, 2022 by

In July-August 2022, the ATHENA Christian Doppler Laboratory hosted four interns working on the following topics: Fabio Zinner: A Study and Evaluation on HTTP Adaptive Video Streaming using Mininet Moritz Pecher: Dataset Creation and HAS Basics Per-Luca Thalmann: Codec-war: is … Continue reading →

Posted in ATHENA | Comments Off on Interns at ATHENA (Summer 2022)

Hybrid P2P-CDN Architecture for Live Video Streaming: An Online Learning Approach

Posted on August 2, 2022 by

IEEE Global Communications Conference (GLOBECOM) December 4-8, 2022 |Rio de Janeiro, Brazil [PDF][Slides] Reza Farahani (Alpen-Adria-Universität Klagenfurt, Austria), Abdelhak Bentaleb (National University of Singapore, Singapore), Ekrem Cetinkaya (Alpen-Adria-Universität Klagenfurt, Austria), Christian Timmerer (Alpen-Adria-Universität Klagenfurt, Austria), Roger Zimmermann (National University of … Continue reading →

Posted in ATHENA | Comments Off on Hybrid P2P-CDN Architecture for Live Video Streaming: An Online Learning Approach

Between Two and Six? Towards Correct Estimation of JND Step Sizes for VMAF-based Bitrate Laddering

Posted on July 13, 2022 by

 14th International Conference on Quality of Multimedia Experience (QoMEX) September 5-7, 2022 | Lippstadt, Germany [PDF][Poster] Hadi Amirpour (Alpen-Adria-Universität Klagenfurt), Raimund Schatz (AIT Austrian Institute of Technology, Austria), and Christian Timmerer (Alpen-Adria-Universität Klagenfurt) Abstract: We currently witness the rapidly growing importance of intelligent video streaming quality … Continue reading →

Posted in ATHENA | Comments Off on Between Two and Six? Towards Correct Estimation of JND Step Sizes for VMAF-based Bitrate Laddering

FuRA: Fully Random Access Light Field Image Compression

Posted on July 12, 2022 by

10th European Workshop on Visual Information Processing (EUVIP) September 11-14, 2022 | Lisbon, Portugal [PDF] Hadi Amirpour (Alpen-Adria-Universität Klagenfurt),   Christine Guillemot (INRIA, France), and Christian Timmerer (Alpen-Adria-Universität Klagenfurt) Abstract: Light fields are typically represented by multi-view images and enable post-capture actions such as refocusing and … Continue reading →

Posted in ATHENA | Comments Off on FuRA: Fully Random Access Light Field Image Compression