We’ve been experimenting with alternatives to Direct Illumination (DI) because of the challenges we’ve been having with achieving a uniform illumination. We’ve turned our attention to Diffused Surface Illumination (DSI) which uses a diffuse acylic (in this case Cyro Acrylite EndLighten) to distribute the IR evenly across the surface. For the IR, we’re experimenting with [...]
Weekly Issue: Multi-Touch
The RENCI Multi-Touch Table was featured at the NC Emerging Issues Forum at the Raleigh Convention Center Feb. 9-10, 2009.
Here’s the latest video of running several different applications developed by RENCI for our Multi-Touch Table. You can view this video in HD by going to YouTube.
This is our exhibit at Supercomputing 08 in Austin, TX on Nov 17-20 where we introduced our Multi-Touch Table.
RENCI enveils its Multi-Touch Table at Supercomputing 08 this week in Austin, TX….
As far as we can tell, we’re one of only 4 multi-touch tables (the others are University of Amsterdam, EVL, Western Scientific and, of course, Microsoft). We’ve had some good comments… One challenge has been the IR coming off the sodium lights in [...]
The touch detection for our direct illumination (DI) wall was originally based on the GC660 GigE camera from Prosilica. At VGA resolution (659 x 493), the GC660 can capture images up to 120 frames per second, but while the Duke wall used 8 of these to cover the image produced by 6 HD projectors, the [...]
The RENCI Multi-Touch Table is a portable multi-user, multi-touch device for user interface and visualization research. Through an architecture of commodity-level components and custom software, this high-resolution interactive display provides an effective means for collaborators to directly interact with their data and associated external applications and peripherals. Future work will improve the table’s usability [...]
Aligning the detected touches with the projected screen requires the use of a calibration application built into Touchlib. Creating precise touches is made easier using the calibration tool we developed. Since there can be variations in the illumination behind (or under) the projection screen, it’s easier to turn off the illuminators and use an infra [...]
The multi-touch interface allows a user to interact with an application or system using more than one finger at a time, as in chording and bi-manual operations. In addition to multiple touches, such sensing devices can also accommodate multiple users simultaneously, which is especially useful for larger shared-display systems such as interactive walls and tabletops.