Title:
    RedbrushAlpha
Author:
    Pieter S. van der Meulen
Description:
    The original image comes from a slide I took in 1991 and was
    scanned to PhotoCD.  The alpha channel was created by taking the
    red and green channels.  A photo-fill program (with varying simi-
    larity and soft-edges settings) was used to make the background
    fully transparent and the center of the plant fully opaque.
URL:
    http://www.geocities.com/Yosemite/7147/home.html for the original
    PhotoCD image;
    http://www.libpng.org/pub/png/ for the PNG home site.
Copyright:
    Copyright 1999 Pieter S. van der Meulen.  This image, including
    the alpha channel, may be used, edited and reproduced freely.
Software:
    pnmtopng 2.37.2