Szkoła Doktorska AGH
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Network Factors Affecting the Quality Perceived by Users of Video Services - Research Using Ecologically Relevant Assessment Standards
dr hab. inż. Mikołaj Leszczuk
Supervisor’s email address:
The doctorate aims to understand better which factors play a role when people use video services: why are some experiences positive, while others are negative? Why is the quality sometimes considered “really bad” and in other cases as very good? Which factors play a role in this respect and how do these factors' interplay? How users experience the video services quality? We all use video services which are developed continuously. The movie from the ’80s or ’90s played in today’s TV channel looks much worse than the advertising played in the brake, even if the old move goes through enhancing procedure. Many evolutions and revolutions drive this development. One of the critical technological improvements is better compression algorithms.
The research on the video quality has a long history, and its main force is pixel quality improvement. It is reasonable since pixel quality has the primary influence on our opinion about the quality of service. Nevertheless, this is not the only reason we use a particular service. We are not focusing on the pixel quality and content quality, only. Other factors are making us complain about the quality of a nearly perfect movie watched in a home theatre, designed to watch the best quality you can get, or almost ignore quality problems when we are on vacation with poor internet access, but our favourite team is playing!
Thus, the research topic of the doctorate will be network factors affecting the quality perceived by users of video services. The research will be the focus on using ecologically relevant assessment standards.
The scope of work will be controlling the network side of experiments and supporting mobile applications’ development, especially from the network Key Performance Indicators (KPIs) point of view.
The candidate’s required qualifications will be a degree in telecommunication or computer science or related fields. Some experience in mobile app development is welcome.
The AGH Department of Telecommunications occupies two buildings with access to Polish Grid Infrastructure (PL-Grid) and other servers and infrastructure. Many software tools, including MATLAB, will be at our service throughout the execution of the research. We equipped our dedicated Multimedia User quality of eXperience Laboratory with specialised PCs. Also, the equipment in the laboratory includes cameras, speakers, headphones. The lab also includes VR headset platforms, many mobile/desktop 3D displays and TV sets from different manufacturers, for researching the field of three-dimensional image processing.
We offer PhD student not only “hard” research facilities, but also support in the form of developing “soft” skills.
Since there are several senior researchers in our lab, the PhD student has a chance to work with more than one supervisor. We consider this an essential contribution to the student’s career development.
We plan to allow the young researcher (PhD student) to take part in an experiment run in a different, international laboratory with which we collaborate. It should take the form of a short scientific mission (lasting around one month). It is yet another critical step in the student’s scientific development. Spending month in a different laboratory can be a valuable lesson before going for a postdoc position.