Arbol One <arbol...@gmail.com> writes:
> .. the letters are black and the document is in many colours but black.
> How can I isolate the black, thus the letters, from all the other
> colours ...
Are you sure that the letters are just black? Usually due to
anti-aliasing there are shaded colours around the black letters. They
make the letters look better. If the shaded colours are blurred it is
pretty hard to reduce the blurring to just the amount needed for the
letters to look good again.
See e.g., http://en.wikipedia.org/wiki/Font_rasterization
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