|
Index
Technical Facilities
Eye Tracker
1
Technical Details
- 2 PC's as master and slave systems, connected by RS232
ports
- RS232 serial lines for data exchange and control lines for
slave operating mode.
- Master PC reads input script and shows stimuli to subject. Also
controls the slave.
- Script file entries control the flow of the experiment.
- Master PC reads pushbuttons (Subject pushes it), buttons used during
Calibration and text reading.
- Images shown by master PC are *.PLA images created by our PLA editor
under windows.
- Slave PC follows the right eye and, on request, saves the data into
eXtended Memory. The amount of memory determines sample time.
- Eye lighting with an infrared light source (LED array). Seen by a
CCD chip via infrared mirror and optics.
- Eye following with a scan rate of 200Hz (selectable from 100 Hz to
240 Hz)
- Eye tracking with internal adjustable mirror.
- Tracking based on two parallel lines through a circle. Algorithm
determines center with 4 cross points lines/circle
- Software Master/slave developed at Max Planck Institute, Nijmegen
- Analyze software from AMTech or user group.
|
