As far as the rules are concerned, the only requirement for
submitted images is that they are primarily composed of fractal
elements. That is because although this is an art contest, it's
also a fractal art contest. One of the limitations fractal
artists accept is that the mediumvisual representations of
mathematical formulasimposes some restrictions on the creative
process. Producing beautiful images despite the restriction is
part of the challenge and beauty of fractals.
If you choose to process your image, that is OK as far as the
rules are concerned. But you should keep in mind that the more
obviously you alter the image, the less pleasing it is likely
to be to some of those who vote. The key word
you should remember
is enhance. We're not really interested in who can
apply the most complex filter combinations in Photoshop to
produce something barely recognizable as a fractal. We're
interested in great fractal pictures.
As a guideline (and this is only a suggestion, not a rule) you
should stick to processes and alterations which are performed on
the entire fractal image, and which use the fractal image as part
of the process.