Re: [Gimp-user] change ruler from pixels to inches, but not in gimprc

2005-11-16 Thread Axel Wernicke


Am 17.11.2005 um 04:29 schrieb R. Sheng-Chieh Cheng:


GIMP Users

I'm frustrated - I would think there's a way.

I'm trying to change the ruler in the image window from
pixels to inches.  However, I prefer not to change the
file, gimprc, since sometimes I use pixels and sometimes
I use inches.  I clicked everywhere in the image window
(file, edt, select, view, etc + sub-options) and I can't
find the place to change the unit.  Is it there somewhere
or must I change it in gimprc?


Hi, while you did not mention the GIMP version you are working with,  
I can only guess...
... Look to your image window, there is a area at the bottom of the  
window where you can change the zoom level by a drop-down menu. On  
the left side of that is another menu, where you can choose whichever  
unit you want to see the rulers.


lexA




Thanks in advance for your help.

Sheng-Chieh


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[Gimp-user] change ruler from pixels to inches, but not in gimprc

2005-11-16 Thread R. Sheng-Chieh Cheng
GIMP Users

I'm frustrated - I would think there's a way.

I'm trying to change the ruler in the image window from
pixels to inches.  However, I prefer not to change the
file, gimprc, since sometimes I use pixels and sometimes
I use inches.  I clicked everywhere in the image window
(file, edt, select, view, etc + sub-options) and I can't
find the place to change the unit.  Is it there somewhere
or must I change it in gimprc?

Thanks in advance for your help.

Sheng-Chieh


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Re: [Gimp-user] automatical white balance

2005-11-16 Thread patman
On Thu, Nov 17, 2005 at 01:10:19AM +0300, Alexandre Prokoudine wrote:
> On 11/17/05, Timo Steuerwald <[EMAIL PROTECTED]> wrote:
> 
> > Hey, that's a cool feature! Thanks a lot! I didn't know that up to now,
> > but anyway: How does this automatical white balance work?
> 
> I don't know how exactly this engine ticks, but I can to to guess: it
> searches for the lightest pixel in the image and makes GIMP believe
> that it is white and then it shifts other colors appropriately. But
> that's my guess. Probably gimp-help package contains information you
> want to know.

I'd like to understand it better too, if someone has an actual explanation
or links to documentation, please post (I searched a bit for gimp white
balance ... not much in terms of explanation)).

I think the auto white balance is the same thing as Tools -> Color Tools
-> Levels, then select "auto", but you have flexibility with the levels
tool.

It looks like the auto leveling just sets each color such that they are
evenly distributed, by setting "dark" and "light" tones (that is what the
help menu calls them) such that they are at the low and high range of where
each  color shows up. Just play with it some and you can see what I mean ...

Read this for a good explanation on using the level tool:

http://world.std.com/~mmcirvin/gimp_tutorial/levels_curves.html

Try auto leveling, and then look and play with the setting for each of the
three *color* channels (i.e. not the default "Value" channel, auto does
not modify it). I'll often adjust the values towards their original values
in order to get more accurate colors.

This must be similar to in-camera auto white balance.  And even the
in-camera auto white balance is sometimes wrong (and probably why you are
trying to fix this in gimp ... or maybe you picked "sunny" white blance, and
forgot to switch when moving indoors under incandescent light).

It would be nice if there were gimp level settings like "cloudy",
"tungsten" etc., like we have for dcraw, but I guess those can only be
applied to raw images (or to images with no modification to their white
balance), else it would be somewhat a useless.

-- Patrick Mansfield
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Re: [Gimp-user] automatical white balance

2005-11-16 Thread Alexandre Prokoudine
On 11/17/05, Timo Steuerwald <[EMAIL PROTECTED]> wrote:

> Hey, that's a cool feature! Thanks a lot! I didn't know that up to now,
> but anyway: How does this automatical white balance work?

I don't know how exactly this engine ticks, but I can to to guess: it
searches for the lightest pixel in the image and makes GIMP believe
that it is white and then it shifts other colors appropriately. But
that's my guess. Probably gimp-help package contains information you
want to know.

Some info on Levels dialog ("Werte" im Deutschen, soweit ich das
verstehe) is here: http://docs.gimp.org/de/ch06s05s06.html

Alexandre
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Re: [Gimp-user] automatical white balance

2005-11-16 Thread Timo Steuerwald

Alexandre Prokoudine schrieb:


On 11/16/05, Timo Steuerwald <[EMAIL PROTECTED]> wrote:
 


Hi all,

can anyone explain how the automatical white balance works? - I can not
find anything about it in the documentation. It can be found at the menu
in Layers->Colours->Auto->White Balance. I'm not sure if this are
exactly the right words because I use the german version.
How does this feature know which pixel should be white? - I expected
something like the manual white balance in digital cameras: Pointing and
selecting  an area which should be white, the rest of the picture will
be changed accordingly.
   



Open Levels dialog (Layer- Colour-Levels), click on the right color
picker in its bottom that is in charge for white and then pick a color
that seems to be the whitest one. Changes will apply.

You can also "show" this color levels tool the "blackest" and the
"grayest" dots ;-)

 

Hey, that's a cool feature! Thanks a lot! I didn't know that up to now, 
but anyway: How does this automatical white balance work?


Cheers,

Timo


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Re: [Gimp-user] Non printable colors

2005-11-16 Thread Alexandre Prokoudine
On 11/17/05, cedric GEMY <[EMAIL PROTECTED]> wrote:
> We can understand the question if we imagine that some user still use
> Photoshop. Alexandre is right to say that in in Free DTP Software
> process, Gimp don't need mark out of gamut colors.

If I told that, I probably wouldn't be right. But I am right anyway,
because I never said that :))

And, quite in contrary to your words, it would be helpful to see
colors out of gamut by softproofing.

Alexandre
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Re: [Gimp-user] Non printable colors

2005-11-16 Thread cedric GEMY
We can understand the question if we imagine that some user still use 
Photoshop. Alexandre is right to say that in in Free DTP Software 
process, Gimp don't need mark out of gamut colors. It is the same for 
Color management. But in Adobe's process, all these steps are taken in 
charge by Photoshop. So if you use GIMP+InDesign, you miss this 
functionnality somewhere.


But i've atthis time no solution for that.

Cedric
pygmee
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Re: [Gimp-user] automatical white balance

2005-11-16 Thread Alexandre Prokoudine
On 11/16/05, Timo Steuerwald <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> can anyone explain how the automatical white balance works? - I can not
> find anything about it in the documentation. It can be found at the menu
> in Layers->Colours->Auto->White Balance. I'm not sure if this are
> exactly the right words because I use the german version.
> How does this feature know which pixel should be white? - I expected
> something like the manual white balance in digital cameras: Pointing and
> selecting  an area which should be white, the rest of the picture will
> be changed accordingly.

Open Levels dialog (Layer- Colour-Levels), click on the right color
picker in its bottom that is in charge for white and then pick a color
that seems to be the whitest one. Changes will apply.

You can also "show" this color levels tool the "blackest" and the
"grayest" dots ;-)

Alexandre
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[Gimp-user] automatical white balance

2005-11-16 Thread Timo Steuerwald

Hi all,

can anyone explain how the automatical white balance works? - I can not 
find anything about it in the documentation. It can be found at the menu 
in Layers->Colours->Auto->White Balance. I'm not sure if this are 
exactly the right words because I use the german version.
How does this feature know which pixel should be white? - I expected 
something like the manual white balance in digital cameras: Pointing and 
selecting  an area which should be white, the rest of the picture will 
be changed accordingly.


Cheers,

Timo
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Re: [Gimp-user] brush size

2005-11-16 Thread Joao S. O. Bueno Calligaris
On Wednesday 16 November 2005 11:55 am, Sven Neumann wrote:
> Hi,
>
> "Joao S. O. Bueno Calligaris" <[EMAIL PROTECTED]> writes:
> > Unfortunattely, that only works for ".vbr"s - which stand for
> > "virtual brushes" - simple, algorithmic, brushes - which have a
> > basic shape (diamond, square, ellipse, all with N points).
> >
> > This is a missing feature for standard bitmap brushes. The code
> > is even there, but currently it is used only with pressure
> > sensitive input devices, and it lacks a UI for using with
> > ordinary mice.
>
> It doesn't make too much sense to scale bitmap brushes, does it?
>
>

IMHO it does. Why not?

See - I have this "digit" animated brush - just a set of 0 to 9 
numbers in some pretty font, sprayed in random order.  The brush size 
is just one, but depending on the desired effect, and the image size 
I am working on (for online viewing or for printing), I need a 
different size of the brush. With the current features opf the GIMP I 
need to make a new version of the brush for each size I wish to use 
it.
 
There is a feature request in bugzilla about a Curves UI to control 
various brush variables - I hope we can implement that someday.

JS
-><-


>
> Sven
>
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Re: [Gimp-user] brush size

2005-11-16 Thread Sven Neumann
Hi,

"Joao S. O. Bueno Calligaris" <[EMAIL PROTECTED]> writes:

> Unfortunattely, that only works for ".vbr"s - which stand for "virtual 
> brushes" - simple, algorithmic, brushes - which have a basic shape 
> (diamond, square, ellipse, all with N points).
>
> This is a missing feature for standard bitmap brushes. The code is 
> even there, but currently it is used only with pressure sensitive 
> input devices, and it lacks a UI for using with ordinary mice.

It doesn't make too much sense to scale bitmap brushes, does it?



Sven

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Re: [Gimp-user] Non printable colors

2005-11-16 Thread Sven Neumann
Hi,

Gilles Maltais <[EMAIL PROTECTED]> writes:

>Is there a function in GIMP that shows which colors are printable and
>which are not ?

No, not yet. But it might be added with the color management features
in GIMP 2.4 or at a later point.


Sven
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