[gdal-dev] gdalenhance command issue with stddev option

[Even Rouault]

On lundi 5 juin 2017 23:52:22 CEST naresh wrote:
> Dear Rahkonen,
> Thanks for the quick response. However with gdalenhace  -help  showing the
> -stddev option. Please find the attache screenshot.
> 
>    [image: Inline image 1]
> 
>  Is there any other mechanism/tool is available for enhancing the images
> with stddev option.
> 

You can run gdalinfo -stats in.tif

note the mean and stddev values

and then compute

s_min=mean - factor * stddev
s_max= mean + factor * stddev

gdal_translate in.tif out.tif -scale s_min s_max 0 255

Best regards,

Even

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Spatialys - Geospatial professional services
http://www.spatialys.com
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