منابع مشابه
Eye Pupil Location Using Webcam
Three different algorithms used for eye pupil location were described and tested. Algorithm efficiency comparison was based on human faces images taken from the BioID database. Moreover all the eye localisation methods were implemented in a dedicated application supporting eye movement based computer control. In this case human face images were acquired by a webcam and processed in a real-‐tim...
متن کاملPupil Dilation and Eye-tracking
A video-based eye-tracker (e.g., the mobile Eyelink II or Eyelink Remote of SR research, Osgoode, Ontario, Canada) uses video cameras to record the eye position of human subjects, and hence, record pupil dilation and eye movements. The eyetracker puts a video cameras and infrared illuminators in front of the eye to record the position of the eye, cornea reflections, and the size of the pupil. U...
متن کاملSignals that modulate gain control for smooth pursuit eye movements in monkeys.
The generation of primate smooth pursuit eye movements involves two processes. One process transforms the direction and speed of target motion into a motor command and the other regulates the strength, or "gain," of the visual-motor transformation. We have conducted a behavioral analysis to identify the signals that modulate the internal gain of pursuit. To test whether the modulatory signals a...
متن کاملPupil size influences the eye-tracker signal during saccades
While it is known that scleral search coils-measuring the rotation of the eye globe--and modern, video based eye trackers-tracking the center of the pupil and the corneal reflection (CR)--produce signals with different properties, the mechanisms behind the differences are less investigated. We measure how the size of the pupil affects the eye-tracker signal recorded during saccades with a commo...
متن کاملUnequal pupil size in patients with unilateral red eye.
syndrome2-that is, manipulation by the patient. Cassey et al and Ball et al reported the use of a metal port in similar patients to ours and found a high incidence of problems including venous thrombosis, occlusion of the catheter, and detachment or fracture of the catheter.34 Cassey et al suggested that these ports should be used only in inpatients because of septic complications. Our only cas...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society B: Biological Sciences
سال: 2019
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2019.1593