Re: [Gimp-developer] When writing a GIMP Plugin using Python, how can the Plugin determine and/or set the Colour Profile of any image that it operates on?

[Craig Sanders <craig sanders gimp gmail com>]

Hello.

After asking my question, I found the following procedures;

    plug-in-icc-profile-info

    and

    plug-in-icc-profile-set

While searching through GIMPs Procedure Browser earlier, I didn't see these
two procedures because I was searching for the keyword "space", i.e. Colour
Space, instead of "profile", i.e. Colour Profile. I blame this on my
playing around with ImageMagick too much before posting my question. The
ImageMagick convert utility uses the command line argument;

    -colorspace

and I think this term was just stuck in my head!

Sorry about that :(

On Tue, May 21, 2019 at 11:43 AM Craig Sanders <craig sanders gimp gmail com>
wrote:

> Hello.
>
> I am writing a GIMP Plugin using Python, and I would like to know how my
> Plugin can determine and/or set the Colour Profile of any image that it
> operates on.
>
> The reason I ask this, is because I have some PNG files which have been
> generated from a PDF file by the ImageMagick convert utility. If I didn't
> know better, I would say that this ImageMagick utility is embedding the
> following Colour Profile into the images which it generates and stores in
> the resulting PNG files;
>
>     Artifex Software sRGB ICC Profile
>
> I also have some PNG files which have been generated by the gnuplot
> utility. The images in these files have the following Colour Profile
> embedded within them;
>
>     sRGB
>
> When I copy and paste a gnuplot generated image into one of the other
> images, the colours of the plots in the gnuplot generated image get altered
> upon pasting. If I didn't know better, I'd say this is due to the
> difference in the Colour Profiles, because if I load the PDF file straight
> into GIMP and then inspect it - it has the sRGB Colour Profile. Then, when
> I copy and paste the same gnuplot generated image into it, the colours of
> the plots are correct!
>
> I don't know a great deal about this subject material, so please excuse me
> if I have asked something silly. I hope I have explained this clearly and
> have provided sufficient information. Any assistance on this matter would
> be greatly appreciated.
>
> Thanks in advance and have a great day.