[gdal-dev] Fwd: gdal_translate histogram conversion

[Pierre Chaponniere]

Hello gdal community !

I'd like to submit your group a question in regards to the use of
gdal_translate function.
I am converting tif images (64bits, 6 bands multispectral) to jpg images
uint8 via the Qgis interface to operate in lot but I face issues with the
conversion of the histogram values.
It appears this gdal-translate truncate the histogram to the 255 first
values.
I therefore tried the scaling (-scale) argument using this line
-scale 0 65536 0 255

But it appears the resulting histogram is spiky (bottom plot)....compare to
the original histogram (top plot)
See image here
https://ibb.co/mGZHCR0

Any idea from your side on how to better represent histogram from this
gdal-translate conversion ?

Any help would be much appreciated !!
Thanks heaps.

Best regards,

Pierre Chaponniere
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