Multitouch: FTIR

Slide 1: Multitouch: FTIR Jason Morrison jason.p.morrison@gmail.com Matthew Kampschmidt talikan@gmail.com

Slide 2: More Multitouch from Jeff Han  Even More Multitouch! 

Slide 3: What is FTIR?

Slide 4: What is FTIR? Frustrated Total Internal Reflection 

Slide 5: What is FTIR? Frustrated Total Internal Reflection   Say what, now?

Slide 6: http://cs.nyu.edu/~jhan/ftirsense/

Slide 7: …and multitouch? What’s FTIR got to do with that?

Slide 8: The Basic Idea Build a table   Rear-project an image on it  Mount infrared LEDs for FTIR  Infrared camera to track fingers

Slide 9: http://digitalstratum.com/programming/ftir_build

Slide 10: http://digitalstratum.com/programming/ftir_build

Slide 11: http://digitalstratum.com/programming/ftir_build

Slide 12: Related developments Single touch  – Gesturing More expensive multitouch  – iPhone

Slide 13: FTIR hits a sweet spot: Cheap, large format, multi-user installations

Slide 14: Table Construction Acrylic or polycarbonate   Input – Infrared LEDs – Compliant surface – Infrared camera Output  – Digital projector – Diffusal surface

Slide 15: Enabling Technology Direct tactile UI   Intuitive gestures, ZUIs  Concurrent multiple users  Can be used right now! (kind of)

Slide 16: Areas for Development Hardware questions  – Compliant surface – LED interface optimization

Slide 17: Areas for Development Software development  – Blob detection: Touchlib is good, GPGPU is better? – Libraries – Tools (VVVV, processing) – Bridges (FLOSC) – Abstractions

Slide 18: Areas for Development Gesture standards  – Fingerworks http://www.fingerworks.com/userguides.html – Community http://nuigroup.com/forums/viewthread/95/

Slide 19: Other interactive tables http://www.iua.upf.es/mtg/reacTable/ http://www.whitenoiseaudio.com/touchlib/

Slide 20: Questions? Jason Morrison jason.p.morrison@gmail.com Matthew Kampschmidt talikan@gmail.com