Leading developers in the world associated with Eye Tracking technology have been working hard to try and make eye tracking a reliable and competitive technology along with other technologies such as motion and touch. ASL (Applied Science Laboratories) have been working hard at applying this technology to standard everyday desktop use.
They have developed a device called the D6 Remote Tracking. The device is based on a humans gaze and works with people of all ages. The ‘gaze’ is picked up on a computer screen and can show the movement of a persons eye based on the stimulus of the eye.
http://www.youtube.com/watch?v=ticWZ0ad8sc&feature=PlayList&p=B5546130824D9F07&index=35
ASL have envisaged an idea that eventually the eye tracking software can be a competitive option to normal computing technologies such as the mouse. Their idea is to basically substitute the mouse for the eye tracking system. This would help with disabilities and could help the ease of computing.
Current Technologies within Eye Tracking
Eye tracking is currently being used in a wide variety of fields such as
- Cognitive Studies
- Medical Research
- Human Factors
- Computer Usability
- Translation Process Research
- Vehicle Simulators
- In-vehicle Research
- Training Simulators
- Virtual Reality
- Adult Research
- Infant Research
- Adolescent Research
- Geriatric Research
- Primate Research
- Sports Training
- fMRI / MEG / EEG
- Commercial eye tracking (web usability, advertising, marketing, automotive, etc)
- Finding good clues
- Communication systems for disabled
- Improved image and video communications
Eye Tracking Vs Eye Gaze
Eye trackers necessarily measure the rotation of the eye with respect to the measuring system. If the measuring system is head mounted, as with EOG, then eye-in-head angles are measured. If the measuring system is table mounted, as with scleral search coils or table mounted camera (“remote”) systems, then gaze angles are measured.
In many applications, the head position is fixed using a bite bar, a forehead support or something similar, so that eye position and gaze are the same. In other cases, the head is free to move, and head movements are measured with systems such as magnetic or video based head trackers.
For head-mounted trackers, head position and direction are added to eye-in-head direction to determine gaze direction. For table-mounted systems, such as search coils, head direction is subtracted from gaze direction to determine eye-in-head position.
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