Abstract
Special needs of deaf people appeal henceforward to sign language synthesis. The system presented here is based on a hierarchical description of sign, trying to take the different grammatical processes into account. Stress is laid on hand configurations specification thanks to finger shapes primitives and hand global properties, and on location and orientation computation issues. We then expose the results achieved from the corresponding written form of signs, leading to their computer virtual animation.
Highlights
Sign language appears to be the main means of communication within the deaf community
Our project of synthesizing sign language is based on the established facts that half of deaf people encounter difficulties in reading and, as a result, suffer from subeducation
Ranges of locations in sign language are limited by the reachable workspace of the hand (Lenarcic and Umek, 1994) : almost always above the waist, ahead of the front plane, roughly within half spheres placed in front of the torso, in front and both sides of the head
Summary
Sign language appears to be the main means of communication within the deaf community. Our project of synthesizing sign language is based on the established facts that half of deaf people encounter difficulties in reading and, as a result, suffer from subeducation. The first three-dimensional synthesis of sign has been achieved in the early eighties (Shantz and Poizner, 1982). It suffered from the lack of power of computers at the time, which entailed low-level (joint angles) specification of body postures. The main core of the system is a sign formal description, grounded on a set of primitives isolated beforehand, stemming from both linguistic works and more synthesis-oriented research
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