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A Quality-Centered Analysis of Eye Tracking Data in Foveated Rendering

  • This work presents the analysis of data recorded by an eye tracking device in the course of evaluating a foveated rendering approach for head-mounted displays (HMDs). Foveated rendering methods adapt the image synthesis process to the user’s gaze and exploiting the human visual system’s limitations to increase rendering performance. Especially, foveated rendering has great potential when certain requirements have to be fulfilled, like low-latency rendering to cope with high display refresh rates. This is crucial for virtual reality (VR), as a high level of immersion, which can only be achieved with high rendering performance and also helps to reduce nausea, is an important factor in this field. We put things in context by first providing basic information about our rendering system, followed by a description of the user study and the collected data. This data stems from fixation tasks that subjects had to perform while being shown fly-through sequences of virtual scenes on an HMD. These fixation tasks consisted of a combination of various scenes and fixation modes. Besides static fixation targets, moving tar- gets on randomized paths as well as a free focus mode were tested. Using this data, we estimate the precision of the utilized eye tracker and analyze the participants’ accuracy in focusing the displayed fixation targets. Here, we also take a look at eccentricity-dependent quality ratings. Comparing this information with the users’ quality ratings given for the displayed sequences then reveals an interesting connection between fixation modes, fixation accuracy and quality ratings.

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Document Type:Article
Author:Thorsten Roth, Martin Weier, André Hinkenjann, Yongmin Li, Philipp Slusallek
Parent Title (English):Journal of Eye Movement Research
First Page:1
Last Page:12
Publisher:Bern Open Publishing
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2017/09/28
Keyword:Ray Tracing; Rendering; data analysis; eye movement; eye tracking; foveated rendering; gaze; perceived quality; region of interest
Departments, institutes and facilities:Fachbereich Informatik
Institute of Visual Computing (IVC)
Projects:Verbundprojekt: Optimierte Lichtsysteme zur Verbesserung von Leistungsfähigkeit und Gesundheit (OLIVE) - Teilvorhaben: Methoden zur Berechnung nutzerzentrierter künstlicher Beleuchtung (DE/BMBF/13N13161)
Dewey Decimal Classification (DDC):0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 004 Datenverarbeitung; Informatik
Entry in this database:2017/11/15
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International