Multi-Touch

Hi.

paloma — Wed, 24 Jun 2009 15:44:13 +0000

I found this video from a great interaction design group in barcelona called multitouch-barcelona: “We design experiences that merge real and digital into a creative environment where people are invited to touch, play, move, feel as they do in the real world.”
They are active within the NUI group. This video was genius to me. such a fun and creative twist to the multi-touch table.
enjoy!

MTmini- Calibration & Demo

paloma — Thu, 18 Jun 2009 16:46:38 +0000

So while still doing research before I build my full table, I have built a small portable multitouch pad will allow me to test the software and experiment on a smaller scale. This MT-mini uses Front Diffused Illumination, with normal ambient light (infrared not required or needed) and a webcam (IR filter can still be in place).

I still plan on building a few more of these.
check it out

Calibration:

FirstQuickCalibration from Paloma Villegas on Vimeo.

Demos:

Demo2 from Paloma Villegas on Vimeo.

Beginning of Project

paloma — Thu, 11 Jun 2009 20:41:02 +0000

This is my new Multi-Touch Development Blog.
Over the next few months, I will be using this blog to show the
developments of my multitouch research & creation

First let me introduce you to some key concepts.
Mult-Touch is a set of interaction techniques that allow computer users to control graphical applications with several fingers. Multi-touch devices consist of a touch screen (e.g., computer display, table, wall) or touchpad, as well as software that recognizes multiple simultaneous touch points, as opposed to the standard touchscreen (e.g. computer touchpad, ATM), which recognizes only one touch point.

At the moment there are five major techniques being refined by the community that allow for the creation of a stable multi-touch hardware systems; these include: Jeff Han’s pioneering Frustrated Total Internal Reflection (FTIR), Rear Diffused Illumination (Rear DI) such as Microsoft’s Surface Table, Laser Light Plan (LLP) pioneered in the community by Alex Popovich and also seen in Microsoft’s LaserTouch prototype, LED-Light Plane (LED-LP) developed within the community by Nima Motamedi, and finally Diffused Surface Illumination (DSI) developed within the community by Tim Roth.
FTIR:

DI:

DSI:

I have done a lot research in the NUI group which has been extremely helpful. I have yet to decide which approach i will finally be pursuing for the final end table.
My first initial approach was the FTIR but it turns out that the projector is too pricey for me. So I have been looking into a an FTIR/LCD approach.

references:
NUI Group