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Quality and Usability LabAlexander Manecke

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Alexander Manecke


Research Field:


Research Topics:

  • Connected Home
  • Home automation
  • Smart Meetering
Biography:Alexander Manecke joined Deutsche Telekom Laboratories in 2006 and currently he is working as a research assistant (Wissenschaftlicher Mitarbeiter) at the Quality and Usability Lab of Deutsche Telekom Laboratories, TU-Berlin. He studied computer science at Freie Universität Berlin and has received a diploma in computer science.Address:Quality and Usability LabDeutsche Telekom LaboratoriesTU BerlinWinterfeldstr. 21D-10787 Berlin, Germany
+49 30 8353 58536   E-Mail:


Changes in blinking behavior while watching videos with reduced quality
Zitatschlüssel schleicher2013a
Autor Schleicher, Robert and Arndt, Sebastian and Antons, Jan-Niklas
Buchtitel Abstracts of the 17th European Conference on Eye Movements
Seiten 130
Jahr 2013
ISSN 1995-8692
DOI 10.16910/jemr.6.3.1
Workshop Conference
Ort Lund, Sweden
Monat aug
Notiz Electronic/online
Serie ECEM
Wie herausgegeben Abstract
Zusammenfassung This study examines the effect of quality impairment on eye blink behavior as an indicator for fatigue while watching HD movies. Subjects watched eighteen minutes excerpts from a HD movie of sea-life scenes in original quality as well as with a reduced bitrate, a common impairment when streaming audiovisual material. Each six minutes, subjects rated the perceived video quality on a scale recommended by the International Telecommunication Union (ITU). Order of presentation was randomized across subjects. The version with reduced bitrate was rated to be of significantly lower quality than the high-quality version. Eye movements were recorded using electrooculogram (EOG), and blinks were extracted semi-automatically using freely available software for Matlab. All blink parameters were normalized subject-wise using the first two minutes of each video block as a baseline. While the interval between two blinks, i.e. the blink rate, showed no significant change between or within the videos, indicating comparable visual load across the sequences, average blink duration was significantly higher for the lower quality video, indicating a stronger fatiguing effect caused by the quality impairments. These results suggest that blink parameters can be deployed to assess the tonic effects of reduced video quality on the viewer.
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