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Overview
The StubeRenA Website.

Calibration and Setup
We designed a software package to calibrate different setups.

A Seamless Tiled Displays
High-detailed scenery can be shown using seamless tiled displays .

Images
Images of a 2x2 projector setup.

  

StubeRena -
A Seamless Tiled Display

Seamless tiled displays provide very high resolutions and offer an overview and a high-detail look of a scenery at the same time. These displays can be used to visulalize and explore scientific data. Think of watching a CAD scene on a tiled display, one can examine fine details while watching the whole blueprint. This offers a new sight to data and its visualisation. The presentation semantics of tiled displays are different to a normal desktop computer. Tiled displays can be used to show information to a huge adience. With its high-resolution ability an integration of different presentation techniques and styles can result in a better understanding of the presented information.

A tiled display with multiple projectors compared to one single projector display. In this setup we compare a 3x2 projector tiled display using mid-range projectors with a resolution of 1024x768 pixels each to a single high-end projector with a resolution of 1600x1200 pixels. This results in an overall resolution of the tiled display of approximately 3072x1536 pixels or 4.7 Megapixels compare to 1.92 Megapixles of the single projector. The two images in the bottom row shows a magnified section of both projections. On the tiled display more details are visible than in the single projector setup.

Computer cluster

To create a tiled display we need a bundle of computers to run multiple displays and render the scenery. We have to connect the computers contributing to the tiled display to share application and scenery data. With a networked computer cluster we can minimize the render loads of each computer due to tile specific culling. I.e. when using N copmuters for rendering the scenery, each individual computer has to render apporximatly 1/N of the whole scene. If we utilze this fact and add more computers to the cluster the performance will increase, since more computers produce more images in the same time. In our setup we used a computer cluster with two dedicated local area networks. One network is used to share scenery and application relevant data, the other is used to synchronize the indivdual displays of each computer.

 

 
 

 

 

 

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Interactive Media Systems Group
Institute for Software Technology and Interactive Systems
Vienna University of Technology

Favoritenstrasse 9-11/188/2
A-1040 Vienna, Austria

http://www.ims.tuwien.ac.at/