A user-centered approach on combining realism and interactivity in virtual environments

In this paper we describe a project that adopts a user-centered approach in the design of virtual environments (VEs) with enhanced realism and interactivity, guided by real-world applications in the areas of urban planning/architecture and cultural heritage education. In what concerns realism, we introduce an image-based 3D capture process, where realistic models are created from photographs and subsequently displayed in a VR system using a high-quality, view-dependent algorithm. The VE is further enhanced using advanced vegetation and shadow display algorithms as well as 3D sound. A high degree of interactivity is added, allowing users to build and manipulate elements of the VEs according to their needs, as specified through a user task analysis and scenario-based approach which is currently being evaluated. This work is developed as part of the Ell-funded research project CREATE.

[1]  Jitendra Malik,et al.  Modeling and Rendering Architecture from Photographs: A hybrid geometry- and image-based approach , 1996, SIGGRAPH.

[2]  George Drettakis,et al.  View-dependent layered projective texture maps , 2003, 11th Pacific Conference onComputer Graphics and Applications, 2003. Proceedings..

[3]  George Drettakis,et al.  Perspective shadow maps , 2002, ACM Trans. Graph..

[4]  Deborah Hix,et al.  User-Centered Design and Evaluation of Virtual Environments , 1999, IEEE Computer Graphics and Applications.

[5]  George Drettakis,et al.  Perceptual audio rendering of complex virtual environments , 2004, ACM Trans. Graph..

[6]  George Drettakis,et al.  Interactive visualization of complex plant ecosystems , 2002, IEEE Visualization, 2002. VIS 2002..