VischeckPS
version 1.01
January 3, 2001
(this file last revised August 22, 2001)


INSTALLATION

VischeckPS is a plug-in for Adobe's Photoshop. It is also compatible with 
products such as Adobe Illustrator, JASC Paintshop Pro, and Macromedia
Fireworks.

This version is for the Microsoft Windows operating system.

To install, simply place the VischeckPS.8bf file into your Photoshop 
"Plug-Ins" folder.  (Typically C:\Program Files\Adobe\Photoshop\Plug-Ins.)
Start Photoshop (or re-start it if it was already running), and you 
should find the "Vischeck" option under Photoshop's "Filters" menu.
To install for other graphics programs, locate the appropriate PlugIns folder
and make a copy of VischeckPS.8bf there. 


USAGE TIPS

To use any PhotoShop filter, your image mode can not be 'bitmap' or
'indexed color'.  Note that if you open a gif with PhotoShop, it will
by default be in 'indexed color' mode.  To apply Vischeck (or any other
PhotoShop filter), you need to convert your image to a different mode.
If you don't know much about PhotoShop's color modes, we suggest that
you use 'RGB color'.  Do this by selecting 'RGB color' from the 'Mode' 
submenu of the 'Image' menu.  


ABOUT VISCHECK

Vischeck draws on algorithms developed at many different vision 
laboratories around the world. In particular, this plug-in owes a 
great deal to a 1997 paper by Brettel, Vienot and Mollon entitled 
"Computerized simulation of color appearance for dichromats" 
(Journal of the Optical Society of America v14 pp2647) and
to recent work from Brian Wandell's group at Stanford
(http://white.stanford.edu).

VischeckPS is Copyright 2001 by Tiny Eyes, Inc.  It was written
by Alex Wade (alexwade@stanford.edu) using FilterMeister
(http://www.filtermeister.com) and is based on code written by 
Alex Wade and Bob Dougherty (bobd@stanford.edu).

VischeckPS is freely available for use and distribution.  You have 
our permission to include VischeckPS on a CD-ROM, or any 
other media, provided it is sold at a minimal price to cover 
production and promotional costs only.

DISCLAIMER
"VischeckPS" IS SUPPLIED AS IS. THE AUTHORS DISCLAIM
ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING,
WITHOUT LIMITATION, THE WARRANTIES OF
MERCHANTABILITY AND OF FITNESS FOR ANY PURPOSE.
THE AUTHORS ASSUME NO LIABILITY FOR DAMAGES,
DIRECT OR CONSEQUENTIAL, WHICH MAY RESULT FROM
THE USE OF "VischeckPS".