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Turntable Platform

 

A Vision Machine for Expanded Spaces of Representation, 2011.

This device represents a novel interactive cinema platform for the expression of stereoscopic 3D panoramic and multi-viewpoint spaces of representation, in which participants embark on an embodied journey of discovery.

In traditional film or television, with its constraints of standardised spatial formats, the viewer is always looking through the eye of the camera into the narrative world that unfolds within the frame. Even as the image in the window is moving, it is clear that the director and cinematographer control the movement on screen, while the audience is restricted to a passive role. A situation where the mobility of the image faces the immobility of the spectator.

With this vision machine, I present a model of spatial correspondence between the virtual and the representational space, which breaks with the paradigm in conventional film and television, by:

  1. substituting the frame for a virtual window
  2. by overcoming the immobility of the spectator
  3. and by challenging the traditional notion of linear narrative.

 

The platform is comprised of

  • a heavy-duty tripod
  • a steel base plate
  • a high resolution optical rotary sensor
  • encapsulated electrical sliprings
  • ball bearings
  • laser cut aluminium plates
  • electrical computer interface for the sensor
  • a Mac Mini for imaging
  • an active stereoscopic 3D high-definition projector with wide angle lens
  • a handle to manually rotate the platform
  • and a custom built 2m diameter cylindrical rear projection screen

 

The operator manually rotates the platform, and therefore the projected image, following its circular path. This rotation of the virtual viewing window around the panoramic screen continuously reveals new and discrete sections of the image.
The spatial correspondence between imagery and the representational space (the angular position of the window) is fixed; the image appears to be stationary.
With this tactile and intuitive user interface, a viewer’s proprioceptive actions in the real space have direct concurrency with their movements in the virtual space.

Observations and a survey of people interacting with this platform and its imagery, indicate that utilising stereoscopic 3D imaging in this context challenges a viewer’s perception. The virtual window into the 3D world ‘behind’ the screen surface, or “the membrane of where surface meets depth”, is no longer a fixed entity but a dynamic frame, in which uncanny interactions occur between the space depicted and the reality of the installation space. This effect can activate a viewer’s sense of balance by gently throwing it off, but at the same time, opening up another layer of interaction and resulting in an impactful embodied experience.

Modeled after Placeworld by J.Shaw.

Related Project:

Juxtaposition

Exhibitions
  • International Symposium on Electronic Art ISEA 2013, Point-of-View, Kudos Gallery. 5-15 June 2013
  • Screenspace Melbourne. 27 February – 2 March 2013
Related Publications
  • Panoramic Navigator. A Vision Machine for Expanded Spaces of Representation. Volker Kuchelmeister. Video accepted for publication at IEEE Virtual Reality 2014, Minnesota, USA 978-1-4799-2871-2/14 ©2014 IEEE. 2014.
  • Alberti’s Window v2.0. A Vision Machine for Expanded Spaces of Representation. Volker Kuchelmeister. Proceedings of the 19th International Symposium of Electronic Art, ISEA2013, Sydney. Edited by Kathy Cleland, Laura Fisher and Ross Harley. Published by ISEA International, the Australian Network for Art & Technology and the University of Sydney. ISBN: 978-0-646-91313-1. 2013.