|
To create convincing artificial 3-D worlds has been a long running technological preoccupation. This, the second exhibit of this type, demonstrates a modern system for stereo vision.
Users hold the glasses in front of their eyes before selecting an object from the on-screen menu. The trackball can then be used to rotate the selected 3-D object on the screen. A further option is to select an historical stereo image, adjusted for viewing with the shutter glasses.
The human eye can not easily see flickering that occurs faster than 50 times per second. We therefore use a monitor with a refresh rate higher than twice 50, and display two different images alternately; for the right eye and for the left. The glasses, with built-in LCD surfaces "close" the left or right eye in step with the screen display. If the second image is appropriately displaced from the first, a convincing 3-D effect can be created.
The Open GL graphics system allowed us to create two 3-D objects, identical
in form and rotated position, in real time. Built in 1999, for the Technical
Museum, Vienna.
|
