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  ReadMe for Color2Grey matlab code
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This code is a small prototype of an early version of our system which used a simple relaxation technique to compute a Color2Gray image; it does not have all of
the optimizations or parameters of our complete system.

Additionally, it is implemented for speed of prototyping and using
matlab's speed of procesing vectors, which has a side effect of not
allowing large images.  (IE a 10x10 image computes fast.. 25x25 takes
much, much longer, and you can't use large images due to memory
constraints). These are implementation problems, not a problem with
the technique.

Usage:

Copy folder:
     Color2GreayRelaxMatlabCode

add Color2GreayRelaxMatlabCode and all is its subdirectories to your
matlab path

in matlab,
cd  to the TestImages directory

Color2Grey('Sunrise.png')

It will pop up a figure with the New grayscale image (converted from
LAB to RGB for display), the original color images, and the luminance
channel from LAB (converted to RGB for display).

The matlab code is commented with the variable you can change.  One
important thing to note is that it resizes the image, and the default
is currently set pretty small.