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- Newsgroups: alt.3d
- Path: sparky!uunet!mnemosyne.cs.du.edu!nyx!hjones
- From: hjones@nyx.cs.du.edu (howard jones)
- Subject: Re: Holography NOT from real object
- Message-ID: <1992Nov20.111534.11214@mnemosyne.cs.du.edu>
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- Organization: Nyx, Public Access Unix at U. of Denver Math/CS dept.
- References: <83828@ut-emx.uucp>
- Date: Fri, 20 Nov 92 11:15:34 GMT
- Lines: 27
-
- In article <83828@ut-emx.uucp> malirath@ccwf.cc.utexas.edu (Robert Fisher
- writes:
- >I can't remember where I read about it, but this summer I heard of a
- >system to create holograms from computer images. It involved multiple
- >exposers as the film was moving closer/further from the display screen.
- >
- >They were using it in conjunction with medical scanners like CAT scans
- >in order to create 3D-holographic "x-rays". It was a rather laborious
- >process though.
- >--
- > ===========================================
- > Robert Fisher / malirath@ccwf.cc.utexas.edu
- > ===========================================
-
-
-
- This was a first year lab project here 2 years ago. Unfortunately, the guy
- whowas supervising it thought that when a laser printer said 300dpi, it
- meant it could resolve 300 dots per inch. In the end, they switched to the
- print-unit's phototypesetter (lots dpi), but they couldn't get much out.
- Apparently, they had real problems trying to get actual circles out of
- PostScript... It is a interesting concept... Holograms of non-existent
- things. I'd be interested to see one, if anyone knows where I might (in
- the UK or literature).
-
- howie
-
-