🚀 go-pugleaf

rpw3@rigden.wpd.sgi.com (Rob Warnock) writes:

>+---------------
>| richard@aiai.ed.ac.uk (Richard Tobin) writes:
>| > The recipient would be provided in advance with one half of the
>| > stereogram, and the other half would be constructed when needed.  
>+---------------

>Cute! I like it!

Here's another trick that's been hanging around the fence:

Encode the information in the least significant bits of either
photographs or musical data. In fact you can use compression algorithms
like JPEG to determine what the "significant" bits are. Just compress
and see which areas of the photo are mapped into the same value. The
bits that used to distinguish the very subtle color shades in this region 
probably aren't that valuable. This way you can let all the compression
guys worry about psycho-physical thresholds. 

There is sooo much noise in the world just waiting to hold the secret
messages of the world. 

-Peter

-- 
Peter Wayner   Department of Computer Science Cornell Univ. Ithaca, NY 14850
EMail:wayner@cs.cornell.edu    Office: 607-255-9202 or 255-1008
Home: 116 Oak Ave, Ithaca, NY 14850  Phone: 607-277-6678