Multi Touch Introduction

Large Displays and Multitouch

Bram vandeputte

• Touch Interfaces

• Technical Overview

• Software

• Gestures

Touch Interfaces

Touchpad

Till  Nagel,  FH  Potsdam

Touchscreen

Till  Nagel,  FH  PotsdamTill  Nagel,  FH  Potsdam

Wacom  Intuos

Till  Nagel,  FH  PotsdamTill  Nagel,  FH  Potsdam

Wacom  Tech  Paper  Intuos  3

Till  Nagel,  FH  PotsdamTill  Nagel,  FH  Potsdam

Mul<touch

Till  Nagel,  FH  PotsdamTill  Nagel,  FH  Potsdam

JazzMutant  Lemur

Till  Nagel,  FH  PotsdamTill  Nagel,  FH  Potsdam

Jeff  Han,  Percep<ve  Pixel

Till  Nagel,  FH  PotsdamTill  Nagel,  FH  Potsdam

Till  Nagel,  FH  Potsdam

“ While  the  iPhone  as  a  whole  may  be  revolu4onary,  the  individual  elements  […]  are  not.

Bruce  TognazziniApple  Human  Interface  Group

Till  Nagel,  FH  Potsdam

MicrosoH  Surface

Till  Nagel,  FH  Potsdam

Technical Details

Display

• rear projection

• LCD

• overhead projection

Diffuser Material

Input

• Frustrated Total Internal Reflection (FTIR)

• Diffused Illumination (DI)

• Laser Light Plane (LLP)

• LED Light Plane (LED-LP)

• Diffused Screen Illumination (DSI)

FTIR

DI

LLP/LED-LP

DSI

Experiments• cheap multi touch input : The Box

• The tabletop :

• rear projection (1080p, +/- 110 cm diagonal)

• LLP

MTMini : The Boxhttp://www.youtube.com/watch?v=pQpr3W-YmcQ

Gestures

Tap Drag Rotate Scale

Zoom Scroll Cluster

Software

• Protocol : TUIO

• Tracker software

• Client libs. (Java, Processing, ...)

Getting Started

• Processing and/or Java

• TUIO libs

• Get TUIO input

• Get example working + start coding !