Hi,
On 10/10/22 16:46, Paul Harwood wrote:
Another more common way to address the problem is to perform a log
transform on the image see
https://theailearner.com/2019/01/01/log-transformation/
<https://theailearner.com/2019/01/01/log-transformation/>
I am not aware of any ootb log transform libraries. That link above does
show how to do it in OpenCV and numpy. I would probably use Pillow my
self and here is a link talking about how to do that - not my link and I
have never used it so it could be wrong or very slow etc
https://pythontic.com/image-processing/pillow/logarithmic%20transformation
<https://pythontic.com/image-processing/pillow/logarithmic%20transformation>
I guess the same thing could be done in GDAL.
Yes, of course... I do it a lot in my photography hobby. Could (should)
have thought of this idea myself... Thanks for the pointer!
-Stefan
--
(o_ Stefan Gofferje | SCLT, MCP, CCSA
//\ Reg'd Linux User #247167 | VCP #2263
V_/_ https://www.gofferje.net | https://www.saakeskus.fi
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