Eye Tracking - Polhemus
Polhemus - VisionTrak
A complete eye and head tracking system. This head-mounted, turn key solution allows unrestricted head movement while it collects pupil size, eye movement, and eye point-of-regard data from human subjects.
see moreEye/Scene Imaging System (Mounted on Baseball Cap)
Ultra-lightweight, miniature eye and scene imaging electronic and optical component assemblies generate eye and scene video images for virtually any subject.
Pupil/Corneal Reflection Tracking Circuit Card (Installed in Computer Chassis)
Eye tracking processor tracks center of subject’s pupil and a reflection from the corneal surface and measures pupil size, all in real-time.
Autocalibration Circuit Card (Installed in Computer Chassis)
Autocalibration processor calculates subject’s fixations with respect to scene being viewed. Real time fixation is represented as a cursor on operator’s scene monitor and may be output in serial format from the PC. Output data is in NTSC format and can be recorded with an external VCR.
Eye Monitor
9-inch black and white monitor for viewing video from eye camera.
Scene Monitor
9-inch black and white monitor for viewing video from scene camera
Computer System
Dell computer system includes computer chassis, color monitor, mouse, and keyboard.
| Extras | Variations |
|---|---|
| Imaging Environment | - Fully functional under dark or bright lighting - Parallax-free scene imaging means that subject point-of-gaze calibration is accurate over full depth of focus |
| Subject Requirements | - Wide range of subject acceptance: eyeglasses, sunglasses, contact lenses, drooping eyelids easily accommodated. - Ultra-lightweight of eye/scene imaging assemblies allows mounting to virtually any headgear. (Weight of eye/scene imaging assembly w/ cap: approx. 8.5 ounces) - Complete subject mobility while recording pupil size and point-of-regard information with respect to surrounding environment. |
| Eye Tracking |
- Pupil tracking methodology separates pupil from dark shadows or eyelashes in eye image - Resolution: 1500 units horizontal x 2200 units vertical - Built-in fixation monitoring and blink detection - Pupil measurements include horizontal diameter, vertical diameter, and pupil area |
| Interface |
- RS-232 serial interface for all eye data parameters |
| Accuracy/Eye Movement Range |
- Point-of-regard accuracy typically <0.5 degrees over +/-25 degrees horizontal and +/-20 degrees vertical range - Extended range calibration procedure tracks eye movement over +/-40 degrees horizontal and +/-30 degrees vertical range |
| Ease of Use |
- System set-up and subject calibration are both simple and flexible - Data collection and calibration procedures are performed from operator’s PC console - Subject calibration procedure typically takes less than 3 minutes - Stored data is in ASCII format for later retrieval, analysis, and exporting |
| Accuracy/Eye Movement Range |
- Point-of-regard accuracy typically <0.5 degrees over +/-25 degrees horizontal and +/-20 degrees vertical range - Extended range calibration procedure tracks eye movement over +/-40 degrees horizontal and +/-30 degrees vertical range |
| Ease of Use |
- System set-up and subject calibration are both simple and flexible - Data collection and calibration procedures are performed from operator’s PC console - Subject calibration procedure typically takes less than 3 minutes - Stored data is in ASCII format for later retrieval, analysis, and exporting |
| Analysis Software |
- Operator configurable software includes scrolling graph displays to view data - Recorded parameters such as raw data, velocity, or acceleration can easily be displayed - Automatically computes average, maximum, minimum, and standard deviation - Correlates subject fixations to objects within the viewed scene |
| Power Requirements |
- 115/230 VAC, 60/50 Hz |
