Re: [Gimp-user] Sierra

[Ross Martinek]

Yes, they do.

Ross


> On Jun 8, 2017, at 1:19 PM, Michael Schumacher  wrote:
> 
> On 06/04/2017 06:28 PM, Linda Newton wrote:
> 
>> Getting ready to download GIMP, but not seeing
>> the option for Mac Sierra...what to do?
> 
> Does there have to be a special option for macOS Sierra? IIRC the
> current packages work just fine on this version of the platform.
> 
> 
> -- 
> Regards,
> Michael
> GPG: 96A8 B38A 728A 577D 724D 60E5 F855 53EC B36D 4CDD
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Re: [Gimp-user] When black and white is not black and white

[Rick Strong]

An interesting test. I believe your test image has to be flattened to work?

Cheers,
Rick S.

-Original Message- 
From: Lancer

Sent: Wednesday, June 07, 2017 8:13 PM
To: gimp-user-list@gnome.org
Cc: notificati...@gimpusers.com
Subject: [Gimp-user] When black and white is not black and white

Some very interesting responses here, thank you :-)

This would be interesting material for students wanting an extra study at a 
more
advanced level beyond level 1 NCEA; simply creating a poster or brochure 
with

"good" design principles (contrast, alignment, repetition, proximity etc).

It would make a good topic for Level 3, having a student analyse the 
different
hex levels of the grayscale conversion methods and to try and reverse 
engineer

the algorithms which may have been used.

I'm attaching a gimp image in color which "detects" which method is used 
when

turning it to grayscale. (Could be used to demonstrate to students that
grayscale conversion is not always the same). I was entertaining spending 
more
time with the image, perhaps making a version where there is blue snow that 
make
the writing invisible until grayscale is applied. (Just a bit busy with 
marking

and lesson planning at the moment)

But thank you for your replies - great information.

Attachments:
* 
http://www.gimpusers.com/system/attachments/603/original/TEST_you_have_used_01.xcf


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Re: [Gimp-user] Sierra

[Michael Schumacher]

On 06/04/2017 06:28 PM, Linda Newton wrote:

> Getting ready to download GIMP, but not seeing
> the option for Mac Sierra...what to do?

Does there have to be a special option for macOS Sierra? IIRC the
current packages work just fine on this version of the platform.


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[Gimp-user] Painting on transparency

[PixelPixie]

Quote:

>As usual I miss the obvious, if you just want to paint in that
>transparent area then put the paint tool into behind mode.

LOL (with all due respect)

Thank you, rich, your answer was all I was looking for.

But that raises another question (which you are free not to give me an answer):
what's the purpose of the buttons "Lock pixels" and "Lock transparency"?
Specially the first, if activating it "locks" pixels *and* transparencies?

Thank you again, anyway!! Wish I had discovered the utility of the Behind Mode
before, that would surely spare me some teeth gnarlings...!

PixelsPixie

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[Gimp-user] Painting on transparency

[rich2005]

>Hi,
>
>I seem not to be allowed to paint over transparencies.
>I tried to lock/unlock transparency but theres no effect. I am able to
>paint over  pixels either in lock or unlock mode, but I can only paint
>over transparencies when they're not locked.
>
>Your help is appreciated, thanks!
>
>Gimp 2.8.22 in windows 10 pro 64 bits.

You have the pixel lock on, which prevents painting on that layer.

The **alpha lock** prevents painting on the alpha channel but there is no
function to **only** paint on the transparent area but not the opaque (white)
area.

If you want to paint in that transparent area then a couple of ways

Draw a selection constraining to the required area. or

Make a new transparent layer under the base layer and paint on that.

rich: www.gimp-forum.net

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[Gimp-user] Painting on transparency

[PixelPixie]

Hi,

I seem not to be allowed to paint over transparencies.
I tried to lock/unlock transparency but theres no effect. I am able to paint
over  pixels either in lock or unlock mode, but I can only paint over
transparencies when they're not locked.

Your help is appreciated, thanks!

Gimp 2.8.22 in windows 10 pro 64 bits.

Attachments:
* http://www.gimpusers.com/system/attachments/604/original/img001.jpg

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[Gimp-user] When black and white is not black and white

[Lancer]

Some very interesting responses here, thank you :-)

This would be interesting material for students wanting an extra study at a more
advanced level beyond level 1 NCEA; simply creating a poster or brochure with
"good" design principles (contrast, alignment, repetition, proximity etc).

It would make a good topic for Level 3, having a student analyse the different
hex levels of the grayscale conversion methods and to try and reverse engineer
the algorithms which may have been used.

I'm attaching a gimp image in color which "detects" which method is used when
turning it to grayscale. (Could be used to demonstrate to students that
grayscale conversion is not always the same). I was entertaining spending more
time with the image, perhaps making a version where there is blue snow that make
the writing invisible until grayscale is applied. (Just a bit busy with marking
and lesson planning at the moment)

But thank you for your replies - great information.

Attachments:
* 
http://www.gimpusers.com/system/attachments/603/original/TEST_you_have_used_01.xcf

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[Gimp-user] Tool Options windows position not remembered

[DrNukular]

>Hi,
>
>I have arranged the Gimp windows in a way that I have the Tool Options
>to the right of the workspace, but still left of the Dockable Dialogs
>(see attached image). However, when I restart Gimp, the positions have
>swapped. Suddenly I have the Dockable DIalogs left of the Tool
>Options.
>
>Is anyone else having that issue? Does anyone know why this is
>happening and how to resolve it? Is there a way to make Gimp remember
>the positions of the windows?
>
>Thanks for any help or advise.
>
>
>I'm running Gimp version 2.8.22 on Fedora 25.


No one has an idea how to fix this?

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[Gimp-user] 3D Text to infinity

[Logansfury]

Between the instruction steps and the images youve provided im sure ill be able
to render something im happy with.

Thank you very, very much for taking the time to create this tutorial for me.

Sincerely,

Logan

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[Gimp-user] 3D Text to infinity

[rich2005]

>Hello Rich,
>
>Your example picture looks perfect! Did you work from a tutorial to
>accomplish that, and if so do you have the URL?
>
>If not, would you mind outlining the steps you used? Im about to
>search for both the softwares you suggested.

Failing of mine, I never save anything. ArtOfIllusion is a java application, so
you do need java installed if using Windows. Which is why I mentioned Blender,
there is a large community of Blender users who might help.

Briefly

Make some text with a large thickness. http://i.imgur.com/Anz1eZO.jpg

Move / Rotate the object and camera to get a suitable camera view.
http://i.imgur.com/OetUlkL.jpg

Throw in some more lights, maybe add a texture although can be left grey and
coloured in in Gimp: http://i.imgur.com/IwdXmcV.jpg

Render as a single image with a transparent background
http://i.imgur.com/6pWpFNe.jpg

Minute 30 secs to render at that size, save as a png. Ready to open in Gimp and
finish off. http://i.imgur.com/M4t9RpS.jpg

Not easy for a beginner, only something I drag out when all else fails.

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[Gimp-user] 3D Text to infinity

[Logansfury]

>That is all very well for short extrusions, Use Gimp or Inkscape to
>interpolate two similar sized paths. Inkscape is marginally easier.
>
>However, for a long extrusion vanishing to infinity, the extrusions
>for each character very quickly merge into one.
>
>Without spending too much time on it a ray-tracing application might
>give a result. This making the extrusion in ArtOfIllusion (AOI) and
>finishing off in Gimp. Blender might be a better bet than (AOI).


Hello Rich,

Your example picture looks perfect! Did you work from a tutorial to accomplish
that, and if so do you have the URL?

If not, would you mind outlining the steps you used? Im about to search for both
the softwares you suggested.

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[Gimp-user] 3D Text to infinity

[rich2005]

>Different technique: http://gimpchat.com/viewtopic.php?f=23=11318

That is all very well for short extrusions, Use Gimp or Inkscape to interpolate
two similar sized paths. Inkscape is marginally easier.

However, for a long extrusion vanishing to infinity, the extrusions for each
character very quickly merge into one.

Without spending too much time on it a ray-tracing application might give a
result. This making the extrusion in ArtOfIllusion (AOI) and finishing off in
Gimp. Blender might be a better bet than (AOI).

Attachments:
* http://www.gimpusers.com/system/attachments/602/original/extrude.jpg

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[Gimp-user] Printing error: Cairo error: out of memory

[BCG]

I have a Win 10 pro computer/a HP Deskjet 9800 printer/I try to print a photo
using Gimp 2.8.18/I get the message: An error occurred while trying to print:
Cairo error: out of memory.
I have tried different settings/less dpi. The photo is a 5x7/photo size is
58,879 KB. Printer has no expandable memory capability. This is the only program
that gives me this message while printing this photo. Wanted to use Gimp to see
if it would give me a better saturated print/better color/etc. This maybe one of
those situations where this error is the only option I get.
Thank you for your time. 

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Re: [Gimp-user] When black and white is not black and white

[Alex Vergara Gil]

You may try Colors -> Component -> Decompose, then select LAB space, BW 
image is the L, thats a lot better than anything else I have tried

Regards 

-Original Message-
From: Lancer 
To: gimp-user-list@gnome.org
Cc: notificati...@gimpusers.com
Date: Tue, 06 Jun 2017 06:02:29 +0200
Subject: [Gimp-user] When black and white is not black and white

I am a school teacher. One of the checks I ask students to do in order to 
test
the contrast of their graphics work, is to convert the images to grayscale 
and
see whether images are still clear.

There are two methods students are using to convert their images to 
grayscale
for this test...


Method 1: flatten image, then Colors > Hue-Saturation => slide the 
saturation
slider down to zero.
Method 2: image => mode => grayscale

Either of these methods results in a grayscale image, but the grays are not
exactly the same.

For example, if I have absolute red (#FF) next to blue, the 
grayscaled-blue
may match the grayscaled-red depending on the tone *and* the method used.
Method 1: Absolute red (#FF) will grayscale-match absolute blue 
(#FF)
Method 2: Absolute red (#FF) will grayscale-match a slightly lighter 
shade
of blue  (#2626FF)

Why are the two methods of grayscale having a different result? I would have
thought that conversion to grayscale would be the same process as dragging 
down
the saturation of an image.

...and given that they are different, which is the better method to use in 
terms
of testing for contrast in media assignments?

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Re: [Gimp-user] CMYK color editing

[Øyvind Kolås]

Sean Greenhlgh wrote:
> I work in the print world. And wanted to know if you guys are planning
> on adding CMYK color modes to the software. Open source and free
> software is the future, and it would be really cool to get this going
> and off the ground. If some designers started using it, we could get,
> many, many users, using it.

For printing of photos edited in GIMP we recommend adopting a color
management workflow with late binding to CMYK by adopting
PDF/X[1] worflows [2]. GIMP is already used successfully by many users
with such workflows.

For cases where late binding workflows are not possible the GIMP 2.10 series
will hopefully gain both support for and good control over CMYK separation when
exporting for instance to TIFF; integrating functionality that currently is
possible with additional third party GIMP plug-ins.

There might be future improvements to how GIMP deals non-RGB data in the 3.x
series or beyond, probably including direct support for
opening/importing CMYK files
without a conversion to RGB - adding such capabilities should be more
easily possible
now that image processing is abstracted away and encapsulated in GEGL ops.

When it comes to more radical departures from RGB, I've personally worked on,
and have plans for continued work on code experiments with color that eventually
might lead to CMYK being just one of possible sets of plate configuration for
process inks / spot-colors / paints used for any simulated duo, tri,
quad(or more)-tone
print plate configuration for various colored substrates - using
spectral characterisation
along the lines of [3].

1: https://en.wikipedia.org/wiki/PDF/X
2: https://www.scribus.net/svn/Scribus/trunk/Scribus/doc/en/pdfx3.html
3: http://www.color.org/CxF_test.xalter

With regards, Øyvind Kolås

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