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Summary: Variable Frame Rate for Low Power Mobile Sign Language
Communication
Neva Cherniavsky Anna C. Cavender Richard E. Ladner Eve A. Riskin
Department of Computer Science and Engineering, Box 352350,
Department of Electrical Engineering, Box 352500,
University of Washington, Seattle, WA 98195.
Email: {nchernia, cavender, ladner}@cs.washington.edu
{riskin}@ee.washington.edu
ABSTRACT
The MobileASL project aims to increase accessibility by en-
abling 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 lan-
guage allow us to save power and bits: namely, lower frame
rates are possible when one person is not signing due to turn-
taking, and signing can potentially employ a lower frame
rate than fingerspelling. We conduct a user study with na-
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