Am 25.02.2019 um 15:34 schrieb Michael Koch:
Which is the recommended filter for a very strong contrast
enhancement, up to a factor of 10?
The eq=contrast=... filter allows only a maximum of 2. Could this be
changed to allow higher values?
As a workaround I'm using 3 or 4 cascaded eq filters.
Another possible workaround for strong contrast enhancement is the
curves filter, but it's slower than three cascaded eq filters, and it's
not linear because it uses a smooth curve through the points:
curves=all='0/0 0.125/1 1/1'
It would be nice if the curves filter had a "linear" option instead of
the smooth curves.
Michael
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ASTRO ELECTRONIC Dipl.-Ing. Michael Koch
Raabestr. 43 37412 Herzberg
www.astro-electronic.de
Tel. +49 5521 854265 Fax +49 5521 854266
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