High-Speed Video Eye Tracker Toolbox

HS VET 200px

The High-Speed VET is a legacy product that's ideal for oculomotor research. Features include:

  • Low noise, drift free measurements
  • Better than 0.25 at 250Hz
  • Stereo option: contact CRS for details

Though not available for purchase any more, the High-Speed VET is still fully supported by Cambridge Research Systems. This legacy page will include technical data, downloadable firmware updates as well as installation information. For a full list of our publications using the High-Speed VET, click on the "Sites Installed" tab.

Performance Measurement technique: Video. Pupil and dual first Purkinje image
Guaranteed sampling frequency: 250Hz with no dropped frames
Resolution: 0.05°
Accuracy: 0.125° - 0.25°
Horizontal range: ±40°
Vertical range: ±20°
Allowable head movement: ±10mm
Measurement units: Fick, Helmholtz coordinates in degrees and screen position in mm
CPU utilization: 25% for eye tracking with mimic and camera window (typical)
Software triggers: Implemented as Callback to user routine when subject looks into Region of Interest (ROI)
Number of ROIs: Over 100 
Optics Infrared illumination wavelength: 930nm
Camera type: 250Hz digital camera
Connection to PC: firewire 
Eyetracker The eyetracker interface box is located near to the camera and is powered from a universal mains adaptor
It provides 6 front panel BNC connectors for user connections and direct connection to a data acquisition system:
Analogue (or 1 bit digital) trigger input time marker for synchronisation connection from external apparatus
Configurable analogue eyeposition x, y and pupil diameter, and trigger output (delayed version of trigger input)
Digital tracked/not tracked signal for each frame, plus two status leds providing visual indication of the trigger input and tracking status (leds can be disabled)
3 bit digital market input to record precise stimulus timing information direct from the ViSaGe (or other visual stimulus generator)
  All outputs synchronously run at a constant latency and can therefore be fed directly to a data aquisition system
Supplied Software In process COM server: Dual interface support late and early binding, with complete type library
Toolbox demonstration programs: For Delphi, Visual Basic, C++Builder and MATLAB. Full source code provided
videoEyetrace: Complete eye tracking environment, with mimic display and scrolling eye position graph. Includes visual stimuli for saccade and smooth pursuit experiments, plus bitmap images for reading and visual scanning experiments 
Minimum System Requirements Processor: 3GHz Pentium 4 or AMD Athlon (the faster the better)
Memory: 512MB RAM
Hard disk drive 1GB
Stimulus Display: ViSaGe visual stimulus generator or dual VGA display
Free USB 1.1 or USB 2 socket
Free Firewire socket (or spare slot for adaptor card). The EIB will automatically power the camera if the host firewire socket does not provide power.
Motherboard: A free PCI slot is necessary if the optional visual stimulus generator is used. A free PCI slot is necessary if a firewire card is required.
Windows: Windows XP