• Sebastian Bosse, Fraunhofer HHI, Germany
  • Naeem Ramzan, University of the West of Scotland, UK

Motivation and Objective of the Special Session

This special session focusses on psychophysiological methods for assessing Quality of Experience (QoE).

Understanding the QoE is crucial for the development and operation of any multimedia system or service with humans being the ultimate receiver.  Typically, psychophysical methods are used to assess users’ media perception. Relying on overt behavioural responses, these methods depend on conscious processing and provide little insights on underlying sensory, perceptual and cognitive processes. These behavioural approaches are based on psychophysical assessment scales that are not interpreted identically by each participant in psychophysiological studies. Participants’ (potentially unconscious) decision strategies affect the formation of conscious responses and by that bias test results. Furthermore, behavioural studies are based on the explicit task of quality assessment, a rather artificial situation for media experience, that renders the assessment in a real-time, or even more so in an immersive setup difficult, if not impossible.

To overcome these difficulties and drawbacks of psychophysical studies, researchers and engineers recently started to study psychophysical assessment methods and show promising results for assessing QoE directly. This special session will provide new insights on the formation of QoE, new experimental designs to assess QoE, and new data processing methods for psychophysiological data as well as psychophysiological quality assessment methods for emerging media.

Session Outline

Depending on specific paper acceptance, the special session will delve into the topics of underlying psychophysiological processing of QoE, experimental designs, psychophysiological approaches to assess quality of emerging media, data processing methods, relations between psychophysical and psychophysiological methods, and efforts towards standardization.

Underlying psychophysiological processing of QoE,:

  • Formation of QoE
  • Sensory, perceptual, cognitive and conscious processes leading to a judgement on media quality and QoE
  • QoE in the central nervous system and the autonomic nervous system

Experimental designs:

  • Physiological measurement methods (EEG, NIRS, fMRI, eye movement,…)
  • New experimental test designs
  • Analysis and comparison of different experiment test designs
  • Potentials and problems of experiment test designs
  • The image looks excellent, but the test is annoying: Influence of the duration of psychophysiological studies
  • Once again: Influence of the number of trials/replications and the number of subjects

Psychophysiological assessment of QoE in emerging media

  • ‘So tell me, are you immersed?’ – ‘Not anymore’: Neural correlates of immersion
  • Neural correlates of HDR

Data processing methods:

  • Filtering methods
  • Subject screening
  • Dimensionality reduction
  • Classification and regression methods

Relation between psychophysical and psychophysiological methods:

  • Who is right? Phenomenological QoE vs. neural correlates of QoE
  • What’s the voltage of ‘annoying’? Neural correlates and psychophysical scales

Towards standardization:

  • Current progress of VQEG/PsyPhyQA

Topics of Interest:

  • Neurophysiological formation of quality judgements
  • Psychophysiological responses to QoE
  • Experimental designs for psychophysiological assessment of QoE
  • Psychophysiological assessment of QoE in immersive media
  • Data processing for psychophysiological assessment of QoE
  • Relation between psychophysical and psychophysiological methods
  • Standardization efforts