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The Manual Input Sessions

2004 | Tmema (Golan Levin & Zachary Lieberman)

The Manual Input Sessions (2004: Golan Levin and Zachary Lieberman) is a series of audiovisual vignettes which probe the expressive possibilities of hand gestures and finger movements. Our concert is performed on a combination of custom interactive software, analog overhead projectors and digital computer video projectors. The analog and digital projectors are aligned such that their projections overlap, resulting in an unusual quality of hybridized, dynamic light. During the performance, a computer vision system analyses the silhouettes of the performers' hands as they move across the glass tops of the overhead projectors. The hand gestures are then analysed by our custom software. In response, the software generates synthetic graphics and sounds that are tightly coupled to the forms and movements of the performers actions. The synthetic responses are co-projected over the organic, analog shadows, resulting in an almost magical form of augmented-reality shadow play.

The Manual Input Sessions exists as both a performance and an interactive installation. More information about the installation version, The Manual Input Workstation, is available here and at the project's official web site.

The following YouTube and Vimeo video shows a one-minute excerpt of Tmema performing the Manual Input Sessions at the RomaEuropa Festival, Rome, on 28 November 2004.

Manual Input Sessions by Tmema (at RomaEuropa) from Tmema on Vimeo.

An impromptu performance of The Manual Input Sessions at Eyeo Festival 2012:

Additional Resources

Complete information about the Manual Input Sessions can be found at its official web site.

Press photographs of Manual Input Sessions performances can be found in the following Tmema photosets at Flickr:

• Playvision, World Financial Center, New York City, 5/2006.
• Age of Simulation conference, Linz, Austria, 1/2006.
• Tokyo Digital Arts Festival, Tokyo, Japan, 12/2005.
• Ultrasound Festival, Huddersfield, England, 11/2005.
• Ars Electronica Festival, Linz, Austria, 9/2004.

Video of the Manual Input Sessions can be viewed online at YouTube.

Images (click to enlarge)

The Manual Input Sessions (Performance excerpt) (61.95 MB)
RomaEuropa Festival, Rome, 28 November 2004
[720x480 H.264 .mov; right-click to download or view on YouTube]