Full source code, documentation, and sample files can be downloaded here.

     Test image for a macro that produces mosaic-style images from bitmaps.   This is Abe Lincoln, of course.

     This is Marilyn Monroe... takes some people a little while before they see it, but it helps to stand back.

    The Mona Lisa.

     The Mona Lisa again, this time as a color photomosaic.

     This was the initial test rendering.  The front image is about 20x20 subsampling, while the back image is around 60x60.