[Karsten.Hilbert@gmx.net: Re: Acquiring Dental RVG on Linux]

[Karsten Hilbert <Karsten.Hilbert@gmx.net>]

----- Weitergeleitete Nachricht von Karsten Hilbert <Karsten.Hilbert@gmx.net> -----

> Date: Fri, 24 Dec 2021 10:10:34 +0100
> From: Karsten Hilbert <Karsten.Hilbert@gmx.net>
> To: debian-med@lists.debian.org
> Subject: Re: Acquiring Dental RVG on Linux
>
> > My main problem right now is to figure out the transformation that a
> > proprietary system is doing, from the pre and post samples. Will perhaps
> > need multiple such samples with different exposure settings, but for now
> > have attached one pre-post pair in my last mail.
>
> I have used IrfanView to show a side-by-side with color
> histograms.
>
> Notably, the vendor image pushes pixel weighting way to the
> extreme, things are either "nearly black" or "nearly white".
>
> That still sounds like gamma value to me ?  Perhaps in
> conjunction with contrast.
>
> Karsten
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