Category Archives: [2009] see.saw > documentation (video/audio installation with 2 multitouch surfaces – FTIR)

Develpment of the see.saw Structure

Modular Room Component Image

> different views of L-module components

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Reflected Image in the L-module component

> possible corner screen material: mirrors, acrylic sheets, or reflective screens…

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Possible Configuration Assembled from the Modular Components

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Fabric Patterns Drawing

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Dimension/Assembly

> Demension Design

> Assembly Color Code

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Projector Position Study

> Projectors Mirrors Perspective

> Projector Position Study

(top view)

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Virtual Model of the Installation (in a gallery space)

> Floor Footprint

> Corner Mirror Support Panel

> Enclosed Wall-View Test

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Sheet For Screens

FTIR Compliant surface fabrication

> Acrylic ‘table’ surface”
provides the structure for the screen, resists pressure/supports weight
> Drafting vellum substrate: two functions:
used as diffusion layer for rear projection video
‘compliant’ surface layer; silicone coated to increase FTIR effect, provides some pressure sensitivity
> Mylar
1. protects the fragile vellum layer
2. reduces friction for finger drags across surface
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modifications to the PS3 camera

Bandpass Filter For the Webcam

hacking PS3 camera

Conceptual Code

The code required for (see.saw) runs something like this:
visual part
> track finger position as CCV (formerly known as tbeta) events
> output TUIO data
> input to Processing
> use cursor position to invoke collections of particles and ellipses
> event duration determines color phase
> output to screen (this has to happen in ‘real time‘)

audio part
> record sample of real time sound
> hold sample in buffer 15 sec in max/msp
> play sample through speaker at opposite entrance

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