Mac Forum / Applications / Mac Applications / February 2005

Can you give a more detailed description of what you're trying to do?
Unsharp mask, dust & scratch removal, "healing brush", or something else?
Automatic, or manual fix?  What OS and flavor of hardware you're using?

Dave Hinz

Yes, it's the ISO setting on your camera. :-)

But to answer your question: ImageMagick's 'convert' command has a
-noise parameter, and ImageMagick is free. (There's also a +noise
parameter, but that's probably not what you're looking for.) You'd do
something like:

convert -noise 1 infile.jpg outfile.jpg

<http://www.imagemagick.org/www/ImageMagick.html#details-noise> has the
details.

Someone should make a more Mac-like front end for ImageMagick.

almost all image editors (freeware, shareware and paying ones) do
feature image reduction "filters". Almost all are poor.

AFAIK, one peculiar plugin for photoshop, ImageMagic (or "magick" maybe)
stands *way* ahead of the others. If you happen to have a copy of
Photoshop you can try it, it is really striking.
ImageMagic in the PC world also comes as a separate application,
unfortunately this is not the case on mac...

Ah. The only shareware I found that had an ambitious noise reduction
function was PhotoRetouch digicam, the "lite" version of Photoretouch.
But the interface is saturated with so many settings than you'll spend
quite a time in converging...

Hervé

Look at AbsoluteDeNoiserFree: http://absolutedenoiser.free.fr/Download.html
Really works.