Jung, T., Gross, M.D. and Do, E.Y.(2002) Annotating and Sketching
on 3D Web models, Proceedings of the IUI 2002 conference, San Francisco,
13-16 January 2002, pp.95-102
Annotating and Sketching on 3D Web models
This paper reports on our progress and findings in building a Web
annotation system for non-immersive 3D virtual environments. Over
the last two years, we developed and tested two systems for collaborating
designers to comment on virtual 3D models. Our first system, Redliner
 lets design team members browse and leave text annotations on
surfaces in three-dimensional models. Experience with Redliner, including
two user evaluations in different settings, led us to develop Space
Pen , a second annotation system with improved interaction capabilities.
It goes beyond the post-it note metaphor, allowing users to draw in
and on the virtual environment.