Subject: Random dot stereogram by laser radar

From: [email-masked] (Robert Scott)
Date: 7 Sep 92 11:41:32 GMT

This postscript file was created using 3d data obtained from rangeimg.zip,
a pd graphics file available via anonymous FTP from various sites on the net.
We have included the readme file that came with the images but unfortunately
this doesn't give any credit to the guy that actually posted them.
Only the range image HUMAN_R was used to produce the stereogram.
Enjoy...
Rob & Gordon.

>These images were created using a 3-D LASAR camera. (LASAR is a Perceptron
>trade mark that stands for laser radar.) The camera scans the scene with an
>laser beam and directly measures the distance to each pixel. For you engineers,
>it does it by amplitude modulating the laser beam with a high frequency sine
>wave. The phase difference between the output and the returning signal is
>measured to determine the distance. For more information, contact:
>
>                Perceptron, Inc.
>                23855 Research Drive
>                Farmington Hills, MI 48335
>                (313)478-7710, FAX 478-7059
>
>The scanner produces two images, the distance, or range image, and the
>intensity image. Each is twelve bits per pixel, so the values are 0..4095.
>However, in order to make it easier to see the images, the contrast has been
>enhanced by reducing the depth of field. The most interesting range slice is
>converted to eight bit pixels, with gray levels 0..255. This affects the
>scale factor for the range data. Each image has a different scale factor.
>
>Each file name ends in either "I" for the intensity image, or "R" for the
>range image. The one exception is BIN_FILT, which is a median filtered range
>image.
>
>BIN:  This is a bin full of manifold castings. A robot picks the castings
>      from the bin.
>
>FLOWERS:  This is a deliberately confusing image, showing flowers in front
>          of pictures of flowers. The camaflage works in the intensity image,
>          but not in the range image.
>
>HUMAN:  This is a scan of a human body.
>
>DOOR:  This is part of a plastic automobile door panel.
>
>ROOM:  This is a very large field of view, low resolution image.
>
>POTHOLE:  A problem in the parking lot.
>
----------------------cut here-----------------------------
%!PS-Adobe-1.0
%(C) Rob Scott+Gordon Flanagan
%Superhuman by laser radar
%Mon,07 Sep 1992

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