NDLI: A color spatial display based on a Raster framebuffer and varifocal mirror

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A color spatial display based on a Raster framebuffer and varifocal mirror

Content Provider	Semantic Scholar
Author	Carson, Kenneth M.
Copyright Year	1984
Abstract	A very simple 3D color display has been constructed. It consists of a 2D display viewed in a rapidly vibrating varifocal mirror. The changing focal length of the mirror is responsible for providing the depth; when the mirror is forward, the image appears closer, and when the mirror is back, the image appears further away. The mirror motion is synchronized with the refresh of the 2D monitor to form stable spatial images. The mirror is simply a bass drum with a commercially available aluminized mylar drum head on one side and a hifi woofer on the other side to provide the driving force. The 2D display is a standard black and white X-Y plotting monitor with a Tektronix liquid crystal color shutter to provide red/green sequential color. The X-Y plotting monitor is driven with signals from a 24-bit raster graphics framebuffer. In total, this is a remarkably inexpensive spatial display, and the first of its kind to incorporate multicolor imagery. This paper surveys much of the work in 3D that has led to the techniques employed in the project. The bass drum spatial display is described in detail, including hardware, software, and other practical concerns of its design, plus techniques for realtime interaction. Applications that require a good spatial display are discussed as motivation for this work. Thesis Supervisor: Andrew Lippman Title: Associate Professor of Media Technology The work reported herein was supported by a grant from the IBM Corporation.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://dspace.mit.edu/bitstream/handle/1721.1/72246/14137265-MIT.pdf?sequence=2
Alternate Webpage(s)	https://dspace.mit.edu/bitstream/handle/1721.1/72246/14137265-MIT.pdf?sequence=2
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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