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Department of Geography Geographic Information Visualization and Analysis (GIVA)

Stationary Eye Tracking (ET)

Eyetracking is a method for unobtrusively record people’s gazes. A such it offers insights into how people scan and perceive displays, how they distribute their visual attention, and what visual search strategies they use for information processing. This allows to evaluate designs, study gaze behaviour, and better understand visual cognition processes.

Images below show the eye movement lab belonging to the GIVA (Geographic Information Visualization and Analysis) unit, located at the University of Zurich>'s Irchel campus, in the Geography department (room Y25-L9, tel: +41 44 635 52 80). The lab has been functional since Fall 2007.

Images below are of PhD student Bingjie Cheng. 

Real Time Tracking
The two white dots in the black square area on the screen represent the two eyes and show the real-time tracking.

Technical Specifications

The technical setup of the lab consists of an eye tracking device and a workstation with the following specifications: 

Eyetrtacker Model: Tobii Pro Spectrum

  • Data rate: 300Hz
  • (Binocular)
  • Accuracy: 0.3 deg
  • Freedom of movement:42x26 cm @75 cm dist

Workstation: Dalco

  • CPU: Intel Core i5 760 (2.80 GHz, 8 MB cache)
  • RAM: 16 GB
  • Disk: 2x500 Gb (7,200 rpm) SATA II
  • Video: GeForce GT 430
  • OS: Windows 7 Enterprise (SP 1)

Software

  • Tobii Pro Eyetracker Manager
  • Tobii Pro Lab 
  • Matlab 
  • R Studio 
  • Microsoft Office

______

Eyetrtacker Model: Tobii Pro Fusion Tobii

  • Data rate: 250Hz
  • (Binocular)
  • Accuracy: 0.3 deg
  • Freedom of movement:45x30 cm @80 cm dist

Display

  • EIZO FlexScan EV2451 
  • Size: 23.8’’ diagonal 
  • Max Resolution: 1920 x 1080 pixel
  • Color support: 16.7 M
  • Image aspect ratio: 16:9
  • Response time: 5 ms
  • Video signals: DVI-D (HDCP), DisplayPort (HDCP), HDMI (HDCP), D-Sub mini
Gaze Plot
On the eye tracking device just below the screen we can see two pinkish circles on the right hand side. These circles are infrared cameras that record fixations and saccades based on reflection from the eyes.

For your questions or comments regarding the lab, please contact
Prof. Dr. Sara Fabrikant and/or Dr. Tumasch Reichenbacher.