[gdal-dev] Looking for some gdal-python-math-stuff help: HighLightCompressVisualizer

[Stefan Gofferje]

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

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