Paper Info
Title
Real-time simulation of visual defects with gaze-contingent display
Abstract
Effective management and treatment of glaucoma and other visual diseases depend on early diagnosis. However, early symptoms of glaucoma often go unnoticed until a significant portion of the visual field is lost. The ability to simulate the visual consequences of the disease offers potential benefits for patients and clinical education as well as for public awareness of its signs and symptoms. Experiments using simulated visual field defects could identify changes in behaviour, for example during driving, that one uses to compensate at the early stages of the disease's development. Furthermore, by understanding how visual field defects affect performance of visual tasks, we can help develop new strategies to cope with other devastating diseases such as macular degeneration. A Gaze-Contingent Display (GCD) system was developed to simulate an arbitrary visual field in a virtual environment. The system can estimate real-time gaze direction and eye position in earth-fixed coordinates during relatively large head movement, and thus it can be used in immersive projection based VE systems like the CAVE™. Arbitrary visual fields are simulated via OpenGL and Shading Language capabilities and techniques that are supported by the GPU, thus enabling fast performance in real time. In order to simulate realistic visual defects, the system performs multiple image processing operations including change in acuity, brightness, color, glare and image distortion. The final component of the system simulates different virtual scenes that the participant can navigate through and explore. As a result, this system creates an experimental environment to study the effects of low vision on everyday tasks such as driving and navigation.
Year
DOI
Venue
2008
10.1145/1344471.1344504
ETRA
Keywords
DocType
Citations 
simulated visual field defect,visual consequence,gaze-contingent display,visual disease,early stage,real-time simulation,arbitrary visual field,visual task,early diagnosis,realistic visual defect,visual field defect,visual field,real time,image processing,system performance,visual fields,eye tracking,virtual environment
Conference
4
PageRank 
References 
Authors
0.52
7
3
Name
Order
Citations
PageRank
Margarita Vinnikov1172.27
robert s allison221729.68
Dominik Swierad340.52