Path: utzoo!attcan!uunet!cs.utexas.edu!sdd.hp.com!uakari.primate.wisc.edu!ames!uhccux!wiliki!newsham
From: newsham@wiliki.eng.hawaii.edu (Timothy Newsham)
Newsgroups: comp.graphics
Subject: Re: Hologram.
Summary: generated on a c64.
Keywords: COMPUTER GENERATED HOLOGRAM
Message-ID: <7865@uhccux.uhcc.hawaii.edu>
Date: 25 May 90 08:39:47 GMT
References: <511@lily.warwick.ac.uk> <7003@blake.acs.washington.edu>
Sender: news@uhccux.uhcc.hawaii.edu
Reply-To: newsham@wiliki.UUCP (Timothy Newsham)
Organization: University of Hawaii, College of Engineering
Lines: 26

In article <7003@blake.acs.washington.edu> wiml@blake.acs.washington.edu (William Lewis) writes:
>In article <511@lily.warwick.ac.uk> laucy@warwick.ac.uk (TS Wong) writes:
>>Is there anyone have experience of direct computer generate hologram?
>>The idea is to use a computer to generate the interference pattern
>>and then use photographic technique to resize the interference
>>pattern.
>>
>>Any relevant materials about this topic will be wellcome.
>
>  There was an article in the April-May 1990 issue of Circuit Cellar
> ......
>

there is a simular article in the transactor (a commodore tech journal)
jan. 88 (vol 8 iss 4).  the author also took a 2 dimensional picture and
generated a diffraction grating for the image.  the output was done on a
standard pdot matrix (well, standard for home use, not anything fancy)
printer and then had it photographically reduced. the picture of the results
looks quite cler. if it where text it would be easily readable. the author
even digitized the output and compared it with the input. quite a good match
.  the original wasnt so big, though. just 32 by 32 pixels.  the output was
reduced aprox. 100 times (originally 15 cm^2). the author gives pictures,
his address, a program and the address of where to get it reduced (a
 microfiching company)
         hope this helps u in your quest.....
                            -Tim Newsham