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ASSETS
2007
ACM

Variable frame rate for low power mobile sign language communication

12 years 7 months ago
Variable frame rate for low power mobile sign language communication
The MobileASL project aims to increase accessibility by enabling Deaf people to communicate over video cell phones in their native language, American Sign Language (ASL). Real-time video over cell phones can be a computationally intensive task that quickly drains the battery, rendering the cell phone useless. Properties of conversational sign language allow us to save power and bits: namely, lower frame rates are possible when one person is not signing due to turntaking, and signing can potentially employ a lower frame rate than fingerspelling. We conduct a user study with native signers to examine the intelligibility of varying the frame rate based on activity in the video. We then describe several methods for automatically determining the activity of signing or not signing from the video stream in real-time. Our results show that varying the frame rate during turn-taking is a good way to save power without sacrificing intelligibility, and that automatic activity analysis is feasible...
Neva Cherniavsky, Anna Cavender, Richard E. Ladner
Added 12 Aug 2010
Updated 12 Aug 2010
Type Conference
Year 2007
Where ASSETS
Authors Neva Cherniavsky, Anna Cavender, Richard E. Ladner, Eve A. Riskin
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