by W.A. Steer PhD
Full details about downloading and installing SISGen.
Title: SISGen Author: W.A. Steer Version: 1.58 Machine: IBM PC Operating system: MS Windows 3.1, WfW 3.11, Win 95, Win 98, Win NT or later [256 or more colour screen mode advised] Date mounted/updated: 12th September 1996 File names: sisgen15.zip Archive size: 132934 bytes Unarchived files: stereo.exe (140k) - the Windows executable stereo.hlp ( 15k) - the Windows Help file bwcc.dll (157k) - DLL for Borland-style controls doldemo.bmp (200k) - demo depth-map of a steam loco. treept85.bmp ( 11k) - test pattern Unarchived size: 511k Conditions of use: Not for commercial use/distribution without prior written permission from the author.
Details of how to use the program, and its limitations, are given in the accompanying Windows Help file (select Help on SISGen's menu bar).
See also my document Stereograms: creating the best for lots of hints, tips, and answers to frequently-asked questions.
[Although this program is fully-functioning, contraints on programmer's time mean that it is lacking a few minor finishing touches such as an auto-install routine, and the documentation is not yet totally comprehensive. In some cases error-trapping - disk-full & low memory, for example - could still be improved.]
At present the version of SISGen available here can only create stereograms up to 4800 virtual pixels wide (that's equivalent to 2400 real pixels with 2x oversampling). Attempts to exceed this limit will most probably cause a GPF. If you have only 4Mb of system RAM you may experience a lot of hard disk activity when creating very big stereograms - this is perfectly normal Windows swap-file behaviour.
As of October 2001, SISGen 1.58 is still the latest version available. I'd quite like to write a new native 32-bit version, and to work with 24-bit true-colour patterns, but it all takes time. One day it will happen!
Run the program 'stereo.exe' using Start|Run, or Windows Explorer.
Alternatively, add the program shortcut to your Start bar.
©1995-2001 William Andrew Steer