Sign Processing Workshop
Lisbon, May 30, 2004

Synthesis of Virtual Reality Animations from SWML
using MPEG-4 Body Animation Parameters

by Maria Papadogiorgaki,
Nikos Grammalidis,
Nikos Sarris, Michael G. Strintzis

Abstract
This paper presents a novel approach for generating VRML animation sequences from Sign Language notation, based on MPEG-4 Body Animation. Sign Language notation, in the well-known SignWriting system, is provided as input and is initially converted to SWML (SignWriting Markup Language), an XML-based format which has recently been developed for the storage, indexing and processing of SignWriting notation. Each sign box (basic sign) is then converted to a sequence of Body Animation Parameters (BAPs) of the MPEG-4 standard, corresponding to the represented gesture. These sequences, which can also be coded and/or reproduced by MPEG-4 BAP players, are then used to animate H-anim compliant VRML avatars, reproducing the exact gestures represented in sign language notation. Envisaged applications include producing signing avatars for interactive information systems (Web, E-mail, info–kiosks) and TV newscasts for persons with hearing disabilities.

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Read More About SWML

SignWriting in Greece

VSigns
https://vsigns.iti.gr:8080/VSigns

Maria Papadogiorgaki
mpapad@iti.gr

Nikos Grammalidis
ngramm@iti.gr

Electrical Engineer, Ph.D.
Informatics and Telematics Institute
Thermi-Thessaloniki, Greece