Describing human activities for VR presentation

A virtual reality tool is presented which allows to display the activity of a human operator performing a routine which involves manipulation with objects. This tool represents a presentation module of the running EU project ActIPret. The project stresses mainly the cognitive vision aspects and aims at interpretation and understanding of expert activities for teaching and education purposes. The task of the virtual reality module is to display a symbolic activity plan to a user. The tool has to transform the activity plan into virtual reality entities in VRML. The main challenge has been in incorporating semantic information to the activity plan, converting it into animation, integrating time information, and describing parametrized avatar-object interaction.