The main sketching code comes from CLD.zip, from http://www.cs.umsl.edu/~kang/Papers/kang_npar07.html
- there's a PDF on that page that explains the algorithm, as well as the original CLD.zip.  Changes I made
to CLD.zip are below.

CImg is on Sourceforge: http://cimg.sourceforge.net/reference/group__cimg__tutorial.html

I've modified the original program to have access to the CImg library, which at the moment is
only supplying code to load images, but other features of this package may be used later, such
as direct camera input.  The CImg code is entirely within one .h file.

The simplest command line is:

g++ -o main *.cpp -I/usr/X11R6/include -L/usr/X11R6/lib -lpthread -lX11

which is also in the Makefile.

The modified program writes an ascii text file containing the graphic image, which you then
should convert to the format of your choice using the "convert" utility from the ImageMagick
suite (to be found at: http://www.imagemagick.org/script/index.php with extra useful info at
http://www.fmwconcepts.com/imagemagick/tidbits/index.php )


CHANGES needed to get CLD to compile: