Downloads. Vis Group Multi-Touch Blog. Introduction 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 and expand the use of multi-touch technologies through more sophisticated gesture recognition, native integration with operating systems, and a continually increasing base of touch-enabled applications and APIs.
This development builds on our experience with the Duke Multi-Touch Wall at the Duke RENCI Center. However, the table had several different requirement, the most important of which was portability. Specifications of Completed Table The Build Like the Duke wall, this table uses Direct Illumination (DI) for touch detection… Direct Illumination (DI) Back projection 56 inch multitouch television. Basic Principle The principle is to modify a webcam to allow it to capture only IR light and point it to your screen.
Then the software analyzes the images and detects press where there is a blob. A blob is the light projected back of your screen when you press onto it (Scattered Light on the schema). Multitouch technology grows at a lighting speed during those years. There are many different methods for sensing the touch on the screen. Optical systems are the simplest to build for home users. Frustrated Total Internal Reflection When light encounters an interface to a medium with a lower index of refraction (e.g. glass to air), the light becomes refracted. Under "ordinary conditions" it is true that the creation of an evanescent wave does not affect the conservation of energy, i.e. the evanescent wave transmits zero net energy. Multitouch Media Application v2 Release. Last weekend I code a keyboard in actionscript and added it to the Multitouch Media Application.
At this moment you will only be able to type text into the yellow square. Due some bug in touchlib/TUIO the shift button won’t be released when you release the shift button physically. Use the shift_up button to ‘release’. - Have fun with thisone! *update 18-09-2007* Yesterdays release had some bugs on rotation (only the onscreenkeyboard and the notepad), v2a solves this issue. v2a now allows to rotate and scale the entire surface aswell. Community Core Vision. Build Your Own Multitouch Surface Computer. It all started while we were researching an article on future user interfaces.
Touch interfaces are hardly futuristic at this point, but multi-touch hardware like the Microsoft Surface or the iPhone is just starting to become a big deal, and we decided to see what big things are going on in that field. What we found that surprised us the most wasn’t anything about the future of multitouch; it was about something that people are doing right now. Multi-Touch G² - Touch Screen Technology from PQ Labs - MultiTouch LCD, plasma large display. Softmt.com Multi-touch software. Perceptive Pixel Founded by Jeff Han Developer of Advanced Multi-Touch Solutions. Blog by Harry van der Veen - CEO Natural User Interface (software, hardware and services) Since the beginning of the NUIgroup community, there has been a hunt to find a good piece of material to improve the coupling between the projection screen material (mylar, tracing paper, Rosco or other) and the acrylic.
With just the acrylic and the project screen on top, it was very hard to generate clear blobs. The blobs got pretty vague because of the diffusion of the infrared light by the projection screen material. In that case you had to press pretty hard to generate a workable blob. And that’s not something you want This has to do with physics. It’s about relative index of refraction. Members within the community have tried all different types of materials, rubbers, silicone, latex etc and it seems that thanks to trial and error and alot of input of different people, the hunt is over. Rockitdontstopit (NUIgroup community member) posted the image above into our Flickr multi-touch pool He used Transparent Silicone Rubber @ 0.5 mm with Mylar on Top. Update @ 19:40 Frankvl’s frame: