Linguistics as structure in computer animation: Toward a more effective synthesis of brow motion in American Sign Language

Computer-generated three-dimensional animation holds great promise for synthesizing utterances in American Sign Language (ASL) that are not only grammatical, but well-tolerated by members of the Deaf community. Unfortunately, animation poses several challenges stemming from the necessity of grappling with massive amounts of data. However, the linguistics of ASL may aid in surmounting the challenge by providing structure and rules for organizing animation data. An exploration of the linguistic and extralinguistic behavior of the brows from an animator's viewpoint yields a new approach for synthesizing nonmanuals that differs from the conventional animation of anatomy and instead offers a different approach for animating the effects of interacting levels of linguistic function. Results of formal testing with Deaf users have indicated that this is a promising approach.