Stereograms

Does anyone have any more of those cool-ass stereograms?  Put them here 
if you do!!!!!!!!!!
-- 
  /--------------------------------------\
 < Mike Cinpinski || lci...@execpc.com   >    /
  \______________________________________/=|=//
  |                                        |       
  /----------------------------------------|---\
 < http://www.execpc.com/~lcinpin/mikezone.html >
  \____________________________________________/

SIRTS Generator

Now you can make Single Image Random Text Stereograms (SIRTS). This online SIRTS
Generator provides you with the ability to make impressive text stereograms. How
impressive? You be the judge! Your stereogram can use color if your web browser       
permits, and there are a variety of options to tweak to make your image optimally 
readable.
found at: http://sarcazm.resnet.cornell.edu/Gila/stereo/

Stereograms (And the program for them)
Douwnload the program at: http://paul.spu.edu/~pvenable/stereo.html
--
        The principle behind stereograms is that (for the parallel
technique) for any series of horizontally repeated objects, any pair which
is closer to each otherthan the rest will result in an object
which appears closer than the rest.  (brief explanation of parallel
technique vs. crosseyed:  Most people use the parallel technique, whether
they know it or not.  This involves moving your focal length behind the
surface of the stereogram so that your right eye views a series of
repeated objects to the right and your left eye views a series of object 
on the left.  Since the series are so similar, your brain superimposes 
them into one image.  Any dicrepancies between the two are interpreted into 
depth.  Crosseyed is the same exact thing in reverse.  You move your 
focal point in front of the screen so that your right eye views a series 
to the left and your left eye views a series to the right.  This inverts 
the depth of the picture.  Background becomes foreground and vice-versa.)

        Here's a graphic illustration to illustrate:

                             *      *
     X      X      X      X     X     X      X      X      X
     X      X      X      X     X     X      X      X      X
     X      X      X      X     X     X      X      X      X

        Most of the pairs have 6 spaces in between.  Two pairs (three 
columns) only have 5 spaces in between.  Therefore, they appear one level 
closer.  Where 0=background and 1= foreground, this should be what you saw:

     X      X      X      X     X     X      X      X      X
      \    / \    / \    / \   / \   / \    / \    / \    /
       \  /   \  /   \  /   \ /   \ /   \  /   \  /   \  /
 X      0      0      0      1     1     0      0      0      X

        The X's on each end are there because they no pairs to the far 
right and the far left.  This results in an automatic border of nothingness.

        We can apply this same method to a string of characters to get 
greater resolution.  We'll make the string 7 character long to keep the 
focal length the same.  If this is the desired effect,

       000000000000000000000111111111111100000000000000000000
       000000000000000000000111111111111100000000000000000000
       000000000000000000000111111111111100000000000000000000

Then this is how you'd get it:
                         *      *
abcdefgabcdefgabcdefgabcdefgbcdefgbcdefgbbcdefgbbcdefgbbcdefgbbcdefg
abcdefgabcdefgabcdefgabcdefgbcdefgbcdefgbbcdefgbbcdefgbbcdefgbbcdefg
abcdefgabcdefgabcdefgabcdefgbcdefgbcdefgbbcdefgbbcdefgbbcdefgbbcdefg

        What happened is that the first time the "a" disappeared, the 6
letters following all became 1 space closer to their pairs on the left. 
This changes the focal length and creates foreground.  Continuing this 
process and returning to the background level becomes a
little more complex.  Another way to explain it is that after the first
string is printed, a character is repeated for however long the string is.
Since this string is 7 chars long, the program prints whatever char it
printed 7 chars ago.  This continues until we reach the foreground: 6
chars. This is why the "a" disappeared.  The char that had to be repeated
(6 ago) was a "b".  When we reached the end of the foreground, the program
looks back 7 again instead of 6.  This is why the "b" ends up being
repeated in the backgroung on the right.
        This same concept of repeated chars can theoretically be applied to any 
number of focal lengths, although most eyes have trouble seeing more than 2.
        I think that pretty much explains it.  If you have any questions, 
(as I might have assumed a few things that need to be explained) just 
drop me a line.  BTW, where is sckcen.be?  Also, I'd like to see what you 
come up with after you finish, if that's not to much trouble.   Later,

      *********** Carl Schenkenberger * csc...@libby.org **********
      *     o  \ o / _ o      __|   \ /    |__      o _ \ o /  o    *
      *    /|\   |    /\  __\o  \o   |   o/   o/__  /\    |   /|\   *
      *    / \  / \  | \ /) |   (\  /o\  /)   |  (\ / |  / \  / \   *
      * 1204 Montana Ave. * Libby, Montana * 59923 * (406) 293-3518 *

EXAMPLE:


focal 6
width 40
height 16
strings 5
peterv
enable
carlsc
henken
berger
........................................
........................................
........................................
........................................
.............1111111111.................
..........1111111111111111..............
........11111111111111111111............
.......11111...111111...11111...........
......111111...111111...111111..........
......111111111111111111111111..........
......111111111111111111111111..........
.......11111....1111.....11111..........
........11111..........11111............
..........1111111111111111..............
.............1111111111.................
........................................

I've seen several posts of and about stereograms, but I'm not sure what
the "definition" really is.  Is it just a phrase or series of words
repeated over and over?  Or is there a more artistic quality to it. 
I've made several that kind of look cool, and have a theme, but I'm not
sure if they really stereograms.  

Thanks for your thoughts.
-- 
  ______   ______   _    _
 |  __  | |  __  | | \  / |   
 | |  \_| | |  \_| |  \/  |     
 | |      | |      | \  / |  
 | |   _  | |   _  | |\/| |  
 | |__| | | |__| | | |  | |  
 |______| |______| |_|  |_|       
  Chris McNaught                  
    mcnaught at micron dot net

Idaho Pro Wannabe wrote:
> 
> I've seen several posts of and about stereograms, but I'm not sure what
> the "definition" really is.  Is it just a phrase or series of words
> repeated over and over?  Or is there a more artistic quality to it.
> I've made several that kind of look cool, and have a theme, but I'm not
> sure if they really stereograms.
> 

If you look at a stereogram and "unhinge" your eyes you might be able to
see a 3D image that just sort of "pops out" at you (not everybody can
see them and it can take quite a bit of trying before you "get it").

Try the links for "3D pictures" on this page (it's an old page so many
of them probably don't work), some of them lead to sites about
stereograms:

http://www.ludd.luth.se/users/vk/junkyard/html/LINKS.HTML

-- 
              _                                         _
  __   ___.--'_`.  __   __                _           .'_`--.___   __
 ( _`.'. -   'o` ) \ \ / /__ _ _ ___ _ _ (_)__ __ _  ( 'o`   - .`.'_ )
 _\.'_'      _.-'   \ V / -_) '_/ _ \ ' \| / _/ _` |  `-._      `_`./_
( \`. )    //\`      \_/\___|_| \___/_||_|_\__\__,_|    '/\\    ( .'/ )
 \_`-'`---'\\__,                                       ,__//`---'`-'_/
  \`        `-\    uggc://jjj.yhqq.yhgu.fr/hfref/ix/    /-'        '/
   ` _____________________ r93...@fz.yhgu.fr ____________________ '
        LIKE MY SIG? GO HERE: http://www.surfplaza.com/figlet/

A stereogram is an image which tricks the brain into seeing a 3-D image. It's
usually a picture, but can also be made out of ASCII characters.  I did a
project on stereograms.  There is a web site I put up that might be some help: 
http://members.aol.com/macjwt/stereogram   Hope that helps.

    Jason

On Tue, 21 Apr 1998 22:28:03 -0600, Idaho Pro Wannabe <mcn...@micron.net> wrote:

>I've seen several posts of and about stereograms, but I'm not sure what
>the "definition" really is.  Is it just a phrase or series of words
>repeated over and over?  Or is there a more artistic quality to it. 
>I've made several that kind of look cool, and have a theme, but I'm not
>sure if they really stereograms.  

I'd say the mindtrick is what makes them stereograms.
This is done by the 'repetition' technique, if you like.
Because of the limited nature of ASCII art, in this area
it often results in words repeated over and over, but it
is not limited to it by definition (e.g. there are some
fine 'hidden' ascii stereograms around).

One of my fav sigs...8 layers :)

-- 
 |"""""""i"""""""""""""i"""""""""""""i"""""""""""""i"""""""""""""i"""""""|
 |""3D"""""X"""""3D"""""X"""""3D"""""X"""""3D"""""X"""""3D"""""X"""""3D""|
 |["""""""""]X["""""""""]X["""""""""]X["""""""""]X["""""""""]X["""""""""]|
 |"XXX""SIG"""XXX""SIG"""XXX""SIG"""XXX""SIG"""XXX""SIG"""XXX""SIG"""XXX"|
 |""""XXX"""""""XXX"""""""XXX"""""""XXX"""""""XXX"""""""XXX"""""""XXX""""|
 |X["LS"]XXX["LS"]XXX["LS"]XXX["LS"]XXX["LS"]XXX["LS"]XXX["LS"]XXX["LS"]X|
 |"XXXXX"""XXXXX"""XXXXX"""XXXXX"""XXXXX"""XXXXX"""XXXXX"""XXXXX"""XXXXX"|
 |XXX""XXXXX""XXXXX""XXXXX""XXXXX""XXXXX""XXXXX""XXXXX""XXXXX""XXXXX""XXX|

                    Lennert Stock - a...@lstock.demon.nl
       Ssshh! ASCII Art Hideout. http://www.lstock.demon.nl/aas.html