Publications

Theses

• Robitza, W., Observer Confidence in Subjective Quality Evaluation, Master thesis (Media Informatics), University of Vienna, 2014.
• Robitza, W., Acceptance of Mobile TV Channel Switching Delays, Bachelor thesis (Informatics), University of Vienna, 2009.

Patents

Granted

• EP-3800882-B1: Information-adaptive mixed deterministic/machine-learning-based bit stream video-quality model. Deutsche Telekom AG. Granted December 4, 2024.
• EP-3264709-B1: A method for computing, at a client for receiving multimedia content from a server using adaptive streaming, the perceived quality of a complete media session, and client. Deutsche Telekom AG. Granted August 29, 2018.

Applied

• WO-2021013946-A1: System and method to estimate blockiness in transform-based video encoding. Deutsche Telekom AG, Technische Universität Ilmenau. Published January 28, 2021.
• WO-2021009134-A1: System and method for estimating the quality of networks or services through crowdsourcing. Aveq GmbH, Technische Universität Ilmenau, Crowdee GmbH, Deutsche Telekom AG. Published January 21, 2021.
• EP-3291556-A1: Method and apparatus for determining the perceptual video quality of a chunk of multimedia content. Deutsche Telekom AG, Technische Universität Berlin, Technische Universität Ilmenau. Published March 7, 2018.

Book Chapters

• Buchinger, S., Wippersberg, J., Lojka, K., Macher, K., Robitza, W., Nezveda, M., Hummelbrunner, P., Hlavacs, H. (2012). Mobile TV Content Design Rules. In TV Content Analysis: Techniques and Applications. CRC Press.

Journal Papers

• Seufert, M., Spangenberger, M., Poignée, F., Wamser, F., Robitza, W., Timmerer, C., & Hossfeld, T. (2024). COBIRAS: Offering a Continuous Bit Rate Slide to Maximize DASH Streaming Bandwidth Utilization. ACM Transactions on Multimedia Computing, Communications, and Applications.
• Raake, A., Borer, S., Satti, S. M., Gustafsson, J., Rao, R. R. R., Medagli, S., List, P., Göring, S., Lindero, D., Robitza, W., Heikkilä, G., Broom, S., Schmidmer, C., Feiten, B., Wüstenhagen, U., Wittmann, T., Obermann, M., & Bitto, R. (2020). Multi-Model Standard for Bitstream-, Pixel-Based and Hybrid Video Quality Assessment of UHD/4K: ITU-T P.1204. IEEE Access, 8, 193020–193049.
• Kara, P. A., Robitza, W., Pinter, N., Martini, M. G., Raake, A., & Simon, A. (2019). Comparison of HD and UHD video quality with and without the influence of the labeling effect. Quality and User Experience, 4(1), 4.
• Robitza, W., Ahmad, A., Kara, P. A., Atzori, L., Martini, M. G., Raake, A., & Sun, L. (2017). Challenges of future multimedia QoE monitoring for internet service providers. Multimedia Tools and Applications, Volume 76, pages 22243–22266.
• Buchinger, S., Robitza, W., Nezveda, M., Hotop, E., Hummelbrunner, P., Sack, M. C., and Hlavacs, H. (2014). Evaluating feedback devices for time-continuous mobile multimedia quality assessment. Signal Processing: Image Communication, 29(9), 921–934.

White Papers

• Hossfeld, T., Wunderer, S., Ben Houidi, Z., Beyer, A., Casas, P., Gassner, C., Guillemin, F., Hall, A., Hirth, M., Robitza, W., Schwind, A., Seufert, M., Tran-Gia, P., Wamser, F., Wascinski, K., & Wascinski, W. (2020). White Paper “Crowdsourced Network and QoE Measurements – Definitions, Use Cases and Challenges”.

Conference and Workshop Contributions

• Herglotz, C., Robitza, W., Raake, A., Hossfeld, T., & Kaup, A. (2023). Power Reduction Opportunities on End-User Devices in Quality-Steady Video Streaming. 15th International Conference on Quality of Multimedia Experience (QoMEX).
• Braun, F., Rao, R. R. R., Robitza, W., & Raake, A. (2023). Automatic Audiovisual Asynchrony Measurement for Quality Assessment of Videoconferencing. 15th International Conference on Quality of Multimedia Experience (QoMEX).
• Herglotz, C., Robitza, W., Kränzler, M., Kaup, A., & Raake, A. (2022). Modeling of Energy Consumption and Streaming Video QoE using a Crowdsourcing Dataset. 14th International Conference on Quality of Multimedia Experience (QoMEX).
• Robitza, W., Ramachandra-Rao, R. R., Göring, S., Dethof, A., & Raake, A. (2022). Deploying the ITU-T P.1203 QoE model in the wild and retraining for new codecs. Proceedings of the 1st Conference on Mile-High Video, 121–122.
• Robitza, W., Rao Ramachandra Rao, R., Göring, S., & Raake, A. (2021). Impact of spatial and temporal information on video quality and compressibility. 2021 13th International Conference on Quality of Multimedia Experience, QoMEX 2021, 65–68.
• Schwarzmann, S., Hainke, N., Zinner, T., Sieber, C., Robitza, W., & Raake, A. (2020). Comparing fixed and variable segment durations for adaptive video streaming. Proceedings of the 11th ACM Multimedia Systems Conference, 38–53.
• Robitza, W., Dethof, A. M., Göring, S., Raake, A., Polzehl, T., & Beyer, A. (2020). Are You Still Watching? Streaming Video Quality and Engagement Assessment in the Crowd. 12th International Conference on Quality of Multimedia Experience (QoMEX 2020). Athlone, Ireland.
• Rao, R. R. R., Göring, S., Robitza, W., Raake, A., Feiten, B., List, P., & Wüstenhagen, U. (2020). Bitstream-based Model Standard for 4K/UHD: ITU-T P.1204.3 – Model Details, Evaluation, Analysis and Open Source Implementation. 12th International Conference on Quality of Multimedia Experience (QoMEX 2020). Athlone, Ireland.
• Raake, A., Singla, A., Rao, R. R. R., Robitza, W., & Hofmeyer, F. (2020). SiSiMo: Towards Simulator Sickness Modeling for 360 ° Videos Viewed with an HMD. 27th IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR).
• Singla, A., Fremerey, S., Hofmeyer, F., Robitza, W., & Raake, A. (2020). Quality assessment protocols for omnidirectional video quality evaluation. In Human Vision and Electronic Imaging (HVEI). Burlingame, CA.
• Rao, R. R. R., Göring, S., Robitza, W., Feiten, B., & Raake, A. (2019). AVT-VQDB-UHD-1: A Large Scale Video Quality Database for UHD-1. 21st IEEE International Symposium on Multimedia (IEEE ISM). San Diego, CA.
• Rao, R. R. R., Göring, S., Vogel, P., Pachatz, N., Juan, J. V. V., Robitza, W., List, P., Feiten, B., Raake, A. (2019). Adaptive video streaming with current codecs and formats: Extensions to parametric video quality model ITU-T P.1203. In Human Vision and Electronic Imaging (HVEI). Burlingame, CA.
• Asan, A., Robitza, W., Mkwawa, I.-H., Sun, L., Begen, A. C. (2018). Optimum Encoding Approaches on Video Resolution Changes: A Comparative Study. In IEEE International Conference on Image Processing (ICIP 2018). Athens.
• Robitza, W., Göring, S., Raake, A., Lindegren, D., Heikkilä, G., Gustafsson, J., List, P., Feiten, B., Wüstenhagen, U., Garcia, M.-N., Yamagishi, K., Broom, S. (2018). HTTP Adaptive Streaming QoE Estimation with ITU-T Rec. P.1203 – Open Databases and Software. In 9th ACM Multimedia Systems Conference. Amsterdam.
• Robitza, W., Kittur, D. G., Dethof, A. M., Göring, S., Feiten, B., & Raake, A. (2018). Measuring YouTube QoE with ITU-T P.1203 under Constrained Bandwidth Conditions. In 10th International Conference on Quality of Multimedia Experience (QoMEX 2018). Santa Margherita di Pula.
• Singla, A., Robitza, W., & Raake, A. (2018). Comparison of Subjective Quality Evaluation Methods for Omnidirectional Videos with DSIS and Modified ACR. In Human Vision and Electronic Imaging (HVEI). Burlingame.
• Singla, A., Fremerey, S., Robitza, W., Lebreton, P., & Raake, A. (2017). Comparison of Subjective Quality Evaluation for HEVC Encoded Omnidirectional Videos at Different Bit-rates for UHD and FHD Resolution. In ACM Multimedia (ACMMM 2017), Thematic Workshops. Mountain View.
• Asan, A., Robitza, W., Mkwawa, I., Sun, L., Ifeachor, E., & Raake, A. (2017). Impact of Video Resolution Changes on QoE for Adaptive Video Streaming. In IEEE International Conference on Multimedia and Expo. Hong Kong.
• Robitza, W. (2017). Towards Behavior-oriented Quality of Experience Assessment for Online Video Services. In ACM International Conference on Interactive Experiences for TV and Online Video (TVX 2017), Doctoral Consortium. Hilversum.
• Raake, A., Garcia, M.-N., Robitza, W., List, P., Göring, S., & Feiten, B. (2017). A Bitstream-based, Scalable Video-Quality Model for HTTP Adaptive Streaming: ITU-T P.1203.1. In 9th International Conference on Quality of Multimedia Experience (QoMEX 2017). Erfurt.
• Robitza, W., Garcia, M.-N., & Raake, A. (2017). A Modular HTTP Adaptive Streaming QoE Model – Candidate for ITU-T P.1203 (“P.NATS”). In 9th International Conference on Quality of Multimedia Experience (QoMEX 2017). Erfurt.
• Singla, A., Fremerey, S., Robitza, W., & Raake, A. (2017). Measuring and Comparing QoE and Simulator Sickness of Omnidirectional Videos in Different Head Mounted Displays. In 9th International Conference on Quality of Multimedia Experience (QoMEX 2017). Erfurt.
• Kara, P. A., Robitza, W., Raake, A., & Martini, M. G. (2017). The Label Knows Better: The Impact of Labeling Effects on Perceived Quality of HD and UHD Video Streaming. In 9th International Conference on Quality of Multimedia Experience (QoMEX 2017). Erfurt.
• Robitza, W., Kara, P. A., Martini, M. G., and Raake, A. (2016). On the Experimental Biases in User Behavior and QoE Assessment in the Lab. In Fifth IEEE International Workshop on Quality of Experience for Multimedia Communications (QoEMC). Washington.
• Kara, P. A., Robitza, W., Martini, M. G., Hewage, C. T., and Felisberti, F. M. (2016). Getting Used to or Growing Annoyed: How Perception Thresholds and Acceptance of Frame Freezing Vary Over Time in 3D Video Streaming. In IEEE International Conference on Multimedia and Expo (ICME). Seattle.
• Dethof, A. M., Robitza, W., and Garcia, M.-N. (2016). StreamSim: A Video Streaming Simulation Toolchain for Unreliable Transport Mechanisms. In Eighth International Workshop on Quality of Multimedia Experience (QoMEX). Lisbon.
• Robitza, W., and Raake, A. (2016). (Re-)Actions Speak Louder Than Words? A Novel Test Method for Tracking User Behavior in Web Video Services. In Eighth International Workshop on Quality of Multimedia Experience (QoMEX). Lisbon.
• Robitza, W., Schönfellner, S., and Raake, A. (2016). A Theoretical Approach to the Formation of Quality of Experience and User Behavior in Multimedia Services. In 5th ISCA/DEGA Workshop on Perceptual Quality of Systems (PQS). Berlin.
• Robitza, W., Garcia, M.-N., and Raake, A. (2015). At Home in the Lab: Assessing Audiovisual Quality of HTTP-based Adaptive Streaming with an Immersive Test Paradigm. In Seventh International Workshop on Quality of Multimedia Experience (QoMEX). Costa Navarino.
• Garcia, M.-N., Robitza, W., and Raake, A. (2015). On The Accuracy of Short-Term Quality Models for Long-Term Quality Prediction. In Seventh International Workshop on Quality of Multimedia Experience (QoMEX). Costa Navarino.
• Robitza, W., and Hlavacs, H. (2014). Assessing the validity of subjective QoE data through rating times and self-reported confidence. In 2014 Sixth International Workshop on Quality of Multimedia Experience (QoMEX) (pp. 297–302). Singapore: IEEE.
• Robitza, W., Pitrey, Y., and Hlavacs, H. (2013). The NappingPlayer — Projective Mapping Experiments on Android Tablets. In Fourth International Workshop on Perceptual Quality of Systems (PQS). Vienna.
• Haslhofer, B., Newman, K., Stefanik, A., Robitza, W., and Lagoze, C. (2013). Old Maps and Open Data Networks. In iConference Proceedings.
• Haslhofer, B., Robitza, W., Lagoze, C., and Guimbretiere, F. (2013). Semantic Tagging on Historical Maps. In ACM Web Science (p. 10). ACM.
• Pitrey, Y., Robitza, W., and Hlavacs, H. (2012). Instance Selection Techniques for Subjective Quality of Experience Evaluation. In Third Workshop on Quality of Experience for Multimedia Content Sharing (QoEMCS). Berlin.
• Robitza, W., Pitrey, Y., Nezveda, M., Buchinger, S., and Hlavacs, H. (2012). Made for Mobile: A Video Database Designed for Mobile Television. In International Workshop on Video Perceptual Quality Measurement (VPQM) (pp. 1–5).
• Robitza, W., Buchinger, S., and Hlavacs, H. (2011). Impact of Reduced Quality Encoding on Object Identification in Stereoscopic Video. In Second Workshop on Quality of Experience for Multimedia Content Sharing (QoEMCS). Lisbon.
• Simon, R., Haslhofer, B., Robitza, W., and Momeni, E. (2011). Semantically Augmented Annotations in Digitized Map Collections. In Proceeding of the 11th annual international ACMIEEE joint conference on Digital libraries JCDL 11 (pp. 199–202). ACM.
• Buchinger, S., Hotop, E., Robitza, W., Hlavacs, H., De Simone, F., Ebrahimi, T., … Fiedler, M. (2010). Towards a gesture-based video player interface. In Third Euro-NF IA.7.5 Workshop on Socio-Economic Issues of Networks of the Future. Ghent.
• Buchinger, S., and Robitza, W. (2010). Towards a comparable and reproducible subjective outdoor multimedia quality assessment. In Third Euro-NF IA.7.5 Workshop on Socio-Economic Issues of Networks of the Future (pp. 2–3). Ghent.
• Buchinger, S., Robitza, W., Nezveda, M., Sack, M. C., Hummelbrunner, P., and Hlavacs, H. (2010). Slider or Glove? Proposing an Alternative Quality Rating Methodology. In International Workshop on Video Processing and Quality Metrics for Consumer Electronics - VPQM.
• Hummelbrunner, P., Buchinger, S., Robitza, W., Selig, D., Nezveda, M., and Hlavacs, H. (2010). Peer to peer mobile TV recovery system. In 8th European Conference on Interactive TV and Video (EuroITV) (p. 263). ACM.
• Nezveda, M., Buchinger, S., Robitza, W., Hotop, E., Hummelbrunner, P., and Hlavacs, H. (2010). Test persons for subjective video quality testing: Experts or non-experts? In Workshop on Quality of Experience for Multimedia Content Sharing (QoEMCS). Tampere.
• Robitza, W., Buchinger, S., Hummelbrunner, P., and Hlavacs, H. (2010). Acceptance of mobile TV channel switching delays. In 2nd International Workshop on Quality of Multimedia Experience (QoMEX) (pp. 236–241). Trondheim: IEEE.
• Buchinger, S., Nezveda, M., Robitza, W., Hummelbrunner, P., and Hlavacs, H. (2009). Mobile TV coding. In 10th International Conference on Telecommunications.

Miscellaneous Papers

These weren’t published and written for university courses or internal project tasks.

• Robitza, W., 3D Vision: Technologies and Applications, 2012.
• Robitza, W., DVB-H – Digital Video Broadcasting für mobile Endgeräte, 2010.
• Hummelbrunner, P., Robitza, W., DVB-H: Technical Overview and Design Requirements for Mobile Television Broadcasting, 2009.

Presentations

• Einführung in LaTeX und BibTeX Tutorial Slides “PS Grundlagen Wissenschaftlichen Arbeitens”, April 2010
• Kurzeinführung in Beamer - Präsentationen mit LaTeX Tutorial Slides for “PS Grundlagen Wissenschaftlichen Arbeitens”, April 2010