Modern multimedia technologies are challenged to handle every day bigger quantities of visual
information with a limited set of resources (e.g. bandwidth, storage space). As the multimedia
consumption grows, so do user expectations in terms of Quality of the delivered Experience.
Multimedia systems can be optimized (from intelligent adaptive streaming to perceptual coding), but
in order to steer such optimization, mechanisms are needed that allow assessing the quality of the
delivered multimedia experience at any stage of the delivery chain.
In this talk, I will review the current challenges in assessing the quality of multimedia
experiences, both from a computational and a human point of view. On the computational side, I will
poke into how and why Machine Learning can be used to successfully predict Quality of Experience
(QoE), and more specifically the annoyance of visual distortions. On the human side, I will review
a set of methodological challenges (and a few solutions) related to subjective QoE measurement.
Finally, I will look at the future, giving some insight on how user factors other than physiology
and perception can influence Quality of experience and can be factored into automatic image and
video quality assessment methods.
Judith Redi is Assistant Professor at the Faculty of Electrical Engineering, Mathematics and
Computer Science (EECMS) of Delft University of Technology. Her work involves the understanding and
modelling of user appreciation for multimedia experiences. This connects visual perception,
cognitive science and engineering, machine learning and computer vision. She obtained her PhD from
the University of Genoa in 2010, and thesis received the best thesis award from the same
university. After a post-doc period at Eurecom, France, working on digital image forensics and
computer vision, she moved to the Intelligent Systems department of TU Delft, and recently she was
awarded a NWO-VENI-grant for her research proposal on “Semantic Aware Quality Assessment”. She is
currently member of a number of technical program committees of top conference, and recently she
has been Technical Program Committee Chair of QoMEX 2015 and Area Chair for multimedia HCI and QoE
at ACMMM 2016. She is also associate editor for the IEEE transactions on Multimedia, and will be
General Chair for ACM TVX in 2017.
More information about the speaker on
University of Konstanz, Universitätsstr. 10, Konstanz
University of Stuttgart, VISUS-Building, Allmandring 19, Vaihingen
Powerwall Room -01.116 (Live Transmission)