Projects
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Active
The Window of Spatial Attention in Reading
In reading, visual information is extracted from a window around the gaze. For the first time, I looked at effects of word's processing load on the dynamics of this window over the course of a fixation when sequential saccades are made.
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Active
Tracking a target in depth with central field loss
Bilateral field loss due to maculopathy creates a scotoma that extends in depth — a volume scotoma.
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Completed
Tutorials and Reference
These are tutorials and reference materials I have written on various topics in probability and geometry over the years.
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Completed
Upper Depth Limit Across Visual Field
Stereopsis is important for tasks of daily living such as eye-hand coordination. It is best in central vision but is also mediated by the periphery.
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Video Description Research and Development Center
The Smith-Kettlewell Video Description Research and Development Center (VDRDC) investigates innovative technologies and techniques for making online video more accessible to blind and visually-impaired students and consumers.
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Completed
Video-Based Speech Enhancement for Persons with Hearing and Vision Loss
Observing the visual cues from a speaker such as the shape of the lips and facial expression can greatly improve the speech comprehension capabilities of a person with hearing loss. However, concurrent vision loss can lead to a significant loss in speech perception. We propose developing a prototype device that utilizes a video camera in addition to audio input to enhance the speech signal from a target speaker in everyday situations.
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Visual Cortical Function in Very Low Birth Weight Infants
Preterm infants are at high risk of visual and neural developmental deficits. We used swept parameter visual evoked potential (sVEP) to determine whether premature birth alters visual cortical function.
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Visual-Impairment Research Agenda for Description (VIRAD)
A systematic road map charting gaps in the quantitative evidence about how description can and should be used to improve video accessibility for the blind.
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Wearabraille
WearaBraille is a research project into wearable computing, and the use of MEMS sensors as novel input technology to mobile devices such as laptops, PDAs and smartphones. Our prototype device functions much like a Braille keyboard, but instead of buttons for each finger to press, there are accele
