[Image-SIG] Remove noise from high ISO photos

[Carlos da Silva Santos]

Daniel,

I don't know much about high ISO noise, but a standard way of removing
noise while preserving edges is using a median filter:
http://www.pythonware.com/library/pil/handbook/imagefilter.htm

If your goal is only running the whole pipeline from python, you might
install the python bindings for Gimp and try to use the Gimp filter
from python.

I hope this helps.

[]s

Carlos



On Dec 19, 2007 2:05 AM, Daniel Felix Ferber
<danielsforummail at terra.com.br> wrote:
> Hi!
>
> I was wondering if PIL has a filter or enhancement in order to remove
> noise from photos that were taked with high ISO. Gimp and ImageMagic
> both have such a feature and it work very good.
> I tried to use SMOOTH or SMOOTH_MORE filter. But there are better
> strategies to remove high ISO noise that try to preserve sharpness of
> the image.
> Currently I am calling ImageMagic from within my python script, but I
> would prefer if PIL would handle it. Is this possible in current version
> of PIL?
>
> Best regards,
> Daniel Ferber
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