Sunday, April 08, 2012

Volume Slicing Display

This is fairly simple but hasn't been commercialized yet. AFAIK

It consists of 1 or 2 video cameras, a projector, a sheet of frosted glass or plastic and a PC with a decent 3D Graphics cards.

For software they use ARToolkit to track the position of the transparent hand held screen and use and Direct Draw, or OpenGL to render the image that's projected.

At this point any standard Android tablet or IPad just by itself should be able to do this.

Using the accelerometers and gyros alone is not enough. They need to be combined with additional data from the built in video camera to track the tablets movement relative to it's  environment.

If someone wishes to pick up this challenge let me know.  I ask that you credit this this post with the idea and link to it.   I am also available on a paid bases.

John L. Sokol

The Volume Slicing Display enables interactive exploration of volumetric data using a rigid, passive, untethered screen. The system tracks the screen (a piece of plexiglas or paper) using a custom monocular high-speed vision system (Vision Chip) or using ARToolkit markers; then one or more projectors on the room project the corresponding slice of a 3D virtual object on that surface in real time. This experimental interface will enable multiple users to feel as if 3D virtual objects co-exist in real space, as well as to explore them interactively using cheap passive projection surfaces (plexiglas or even paper). This project is related to the "Khronos Projector" and the "Deformable Workspace", but is more oriented towards medical imaging technologies.

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