Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!ncar!noao!asuvax!hrc!gtx!randy From: randy@gtx.com (Randy D. Miller) Newsgroups: comp.graphics Subject: Re: 3-D perceptual abilities Message-ID: <902@gtx.com> Date: 7 Mar 89 02:39:18 GMT Reply-To: randy@gtx.UUCP (Randy D. Miller) Distribution: usa Organization: GTX Corporation, Phoenix, Arizona Lines: 32 rrw@naucse.UUCP (Robert Wier) writes: > The technique of fusing two images into a stereoscopic > image while not converging your eyes can lead to an amusing > capability. I first learned this technique when I became > interested in stereo photography, and got to where I could look > at the old stere-optican cards without using a viewer. I discovered > that the same thing could frequently be done with the puzzles that > sometimes appear in newspapers wherein a cartoon is repeated two > times, and the reader is to find 6 (small) differences in the > drawings (or 5, or 7, ... whatever). It seems that the cartoons I've amused myself for countless hours experimenting with this "merging of two images". Like another poster, I've also found that I could take stereo photographs with my 35mm camera, just by offsetting the shots by a few inches. The exact offset doesn't matter; your brain will make the merged image appear to have the correct depth effect. My vacation photo album now contains stereo shots. Friends and relatives can't figure why I put two pictures that look alike into the album (:-). Similar to the "find-the-differences" newspaper cartoon, I've found that I can lay two 8.5 x 11 inch printed pages side by side and merge the two images so that I can spot any typographical differences. You can become a human "diff". Sometimes you can merge the images of two chairs sitting side by side, or two faces that are similar in size and shape, or two coins laying side by side, or two anything. Makes sitting in a waiting room more interesting. -- Randy D. Miller ...!sun!sunburn!gtx!randy (602) 870-1696 GTX Corp., 8836 N. 23rd Avenue, Phoenix, Arizona 85021