FLUX: A Tilting Multi-Touch and Pen

Based Surface

Jakob Leitner, James Powell, Peter Brandl, Thomas Seifried,

Michael Haller

Media Interaction Lab

Upper Austria University of Applied Sciences

Hagenberg - Austria

DiamondTouch

multi-user/touch

32" / 42" size

(diagonal)

Microsoft Surface

multi touch

32" size (diagonal)

SMART Table

multi touch

27" size (diagonal)

Commercially available products:

Anoto Pen Technology:

Anoto Pen Technology:

d. ANOTO pattern

e. Touching surface

f. IR-based tracking

a. Digital Pen

b. Plexiglas

c. Table

Pros and Cons:

+High resolution pen tracking (600dpi)+High speed pen tracking (75Hz) +Large sizes possible (>4 000 000 km²)+Arbitrary shapes possible (circle, freeform)+Multiple pens (7 per Bluetooth reciever)

-Shadows-Unflexible setup-Direct touch support

3mm scratch-resistant acrylic cover

HP Colorlucent Backlit UV foil

with printed Anoto pattern

Anoto pens &

recharging

stations

5mm transparent glass plate

Pros and Cons:

+High resolution pen tracking (600dpi)+High speed pen tracking (75Hz) +Large sizes possible (>4 000 000 km²)+Arbitrary shapes possible (circle, freeform)+Multiple pens (7 per Bluetooth reciever)+No shadows+Flexible setup

-Direct touch support

FTIR (Frustrated Total Internal Reflection), Jeff Han, 2005 cf. fingerprint reader

only allows touches with fingers

requires a compliant surface, so that touches also get recognized during dragging operations

Direct touch support:

Anoto + FTIR

Anoto tracking (1st layer):

Relevant for the Anoto tracking

Projection screen (diffuser)

Scratch resistant film can be applied on top to increase durability of the surface.

FTIR tracking (1st – 3rd layer):

(a) Polycarbonate plate is

covered with

(b) a compliant surface layer

(c) and a diffuse layer on

top.

Final Setup:

top: HP backlit UV

Compliant surface:

0,18 mm transparent latex sheet

LED: SFH485P

Bottom:

6 mm polycarbonate sheet

Pros:

+High resolution pen tracking (600dpi)+High speed pen tracking (75Hz) +Large sizes possible (>4 000 000 km²)+Arbitrary shapes possible (circle, freeform)+Multiple pens (7 per Bluetooth reciever)+No Shadows+Flexible Setup+Direct touch support

FLUX

Flexible Setup which automatically adapts to intended use

http://mi-lab.org/

http://mi-lab.org/slide09