When exploring a virtual environment, realism depends mainly on two factors: realistic images and
real-time feedback (motions, behaviour etc.). In this context, photo realism and physical validity of
computer generated images required by emerging applications, such as advanced e-commerce, still
impose major challenges in the area of rendering research whereas the complexity of lighting
phenomena further requires powerful and predictable computing if time constraints must be attained.
In this technical report we address the state-of-the-art on rendering, trying to put the focus on
approaches, techniques and technologies that might enable real-time interactive web-based clientserver
rendering systems. The focus is on the end-systems and not the networking technologies used
to interconnect client(s) and server(s).Siemens; Bertelsmann mediaSystems GmbH; Eptron Multimedia; Instituto Politécnico do Porto - ISEP-IPP; Institute Laboratory for Mixed Realities at the Academy of Media Arts Cologne, LMR; Mälardalen Real-Time Research Centre (MRTC) at Mälardalen University in Västerås; Q-Systems
