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  Set saturation and value for all pixels collectively [SOLVED]
Posted by: akgimp - 04-20-2017, 09:14 AM - Forum: General questions - Replies (3)

Hello, Looks like a lively and positive forum, glad to find it.

How to set the saturation for all pixels to 100%? Likewise for value. I'm leaving hue alone.

The hue-saturation tool does not do this, as far as I can see. My evidence is this: create a new image any size, fill it entirely with hsv 215,20,45. In the color tool, use the color picker to select anywhere, which puts this color into the color tool's swatch. Slide the saturation and value to 100 each. Then in the hue-saturation tool, increase saturation and value (called lightness here) to maximum each. Compare the image with the swatch.

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  Lost Layers after saving
Posted by: Thawk143 - 04-20-2017, 08:08 AM - Forum: General questions - Replies (2)

Hi Guys. I am using Gimp 2.8.14 on Windows 10 and my projects keeps loosing layers after saving and reopening the project files. I save my files as .xcf and when I open it the next day there are several layers missing. The background layer and several pictures will be lost. The file size is still the same as the day before but several layers are missing. After a few attempts, Gimp will inform me that the file is corrupt.

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  Ellipse selection tool quit working
Posted by: eingram25 - 04-20-2017, 02:47 AM - Forum: General questions - Replies (4)

Gimp 2.8.20
Windows 10
All of a sudden my ellipse select doesn't work. The rectangle select and lasso select work fine.
The ellipse looks like it's selecting, but nothing gets selected
I re-installed Gimp but it didn't help.
Any ideas, anyone?
Anybody else have this happen?
(I reduced the screenshot to make it uploadable)



Attached Files Thumbnail(s)
   
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  Removing original paper texture from high res b&w scans
Posted by: ordinarydream - 04-19-2017, 06:28 PM - Forum: General questions - Replies (10)

Hello,
 
A) SHORT FORM QUERY:
 
How to eliminate paper texture and pencil marks, but maintain the almost black to completely black ink from drawing scans?
 
B) LONG FORM QUERY:
 
I have some scans of drawings that I want to print on mildly textured archival quality paper. The problem is that the scans retain the texture from the original paper that the scan comes from. The consequence of this is that when printed on similar paper as the original drawing there is a doubling of textures – the printing paper and the pattern of the paper from the original scan. This leaves an undesirable, and rather fake looking, doubled texture effect in the blank 'white' areas of the images.
 
An added two-fold complication is that: 1) The ´black´inked areas of the images are not trully uniformly black due to the colour of the ink, erasing, slight errors and the original paper texture. I would, however, prefer that this subtle, uneven inking is maintained, as it preserves the handdrawn look of prints, but; 2) in the scans there is also the appearance of pencil ghosting that is barely visible in the original drawings. I do not want these pencil marks to be visible.
Any simple cutting technique will not do the job as some of the drawings are pointillist, and this cutting would need thousands of repetitions. Additionally, any simple single colour selection technique would not suffice as it is not only pure black, but also dark colours close to black that I need to retain.
 
So, overall, I basically want to maintain the original ink data, but eliminate the paper texture and the pencil data.
 
I have been experimenting with a number of different tools, such as the bucket fill plus custom pattern, color select, etc, but I am starting to become overwhelmed with the number of options.
 
Any pointers appreciated!



Attached Files
.xcf   paper texture and pencil ghosting example.xcf (Size: 176.88 KB / Downloads: 13)
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  Shadow - white instead of black
Posted by: aztec11us - 04-18-2017, 06:48 PM - Forum: General questions - Replies (2)

hi all!

One of my first GIMP tutorials is making a floating word - just a word with a simple 'shadow" giving the illusion of the word floating above its background

The page is this one :
https://www.gimp.org/tutorials/Floating_Logo/


In that tutorial, the end result is a word (with a special texture) and a black "shadow" cast against the gree-ish background

Tutorial is easy enough to do, but i tried creating a white shadow.


So, at the beggining, instead of black background + white writing, i did the opposite: white background and black writing.

Needless to say, despite following exactly same steps, results varied wildly compared to the site:
1) at the point where they talk about "layer -> Anchor Layer", instead of obtaining white background with plasma texture writing, i get plasma background and black writing (!!!)
2) lower on the page, at the point where they say "Creating a drop shadow", there is green background and plasma textured text ....but in my case, i get plasma background!

So, despite following same steps, the results vary wildly.

How EXACTLY do i make it so the shadow cast is white instead of black ? (or any other color)

Please, use GIMP and tell me exactly what i need to do.

Thanks

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  Files in the wrong place?
Posted by: david - 04-17-2017, 03:09 PM - Forum: General questions - Replies (8)

I have been exploring my new installation of Gimp (Ubuntu 64 bit).
In usr/share/gimp2.0/scripts I have come across the following 6 .py files.

btn4ws.py
cmyk-tiff-2-cmyk-pdf.py
contactsheet.py
ez-perspective.py
file-ora.py
layerfx.2.8.py

Obviously, they do not appear in any of the Gimp menus.
I am curious to know what they are doing there on a new installation!

Also if I were to move them to:
/.gimp-2.8/plug-ins or
/usr/lib/gimp/2.0/plug-ins

are any of them going to work?

david.

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  Turning a portrait into a bronze bust
Posted by: megaman - 04-17-2017, 02:28 PM - Forum: General questions - Replies (10)

Hi.

I posted the same topic a year ago onto a gimp forum, but I don't remember which one. As a result of the help I received, I was able to produce what I envisioned. It turns out that I want to do it again this year for a couple more of the kids in flag football.

Somehow, I cannot locate that thread anywhere on the net. I tried for so long and yet it seems like that thread completely disappeared. I even tried logging on to all kinds of gimp forums with a couple different email addresses I may have used, and none of the sites recognize them. It's as if there was another gimp forum, and that forum is now completely wiped out.

I saved the gimp file but when I open it, it's basically just the finished product. I can't for the life of me remember what steps I took to create the finished product. I really should have copied and pasted that thread and kept it in my email for future reference.

Basically I posted a thread showing these examples:

Actual bust:
[Image: uc?export=view&id=1UOS1NsxUypRBBZr_Xcf88ltpKB3vs0INew]


A mock bust of Tom Coughlin:
[Image: uc?export=view&id=1pB5hAbVriJlaA23O-qEiLPiZ_-9kQ7tjRA]
[Image: uc?export=view&id=1VaXOpG1Y6IweGI4vnv1dmbRuxDXJQYpGpA]


This was my end result (I blanked out the kid's eyes and name due to privacy):
[Image: uc?export=view&id=1-go4VyQBOUq4862mSYmIt6izYb3DX0MzTw]



I got a lot of advice on how to do this and worked out really well. I'd love to be able to do this again.

Can anyone either help me locate that thread on the net, or provide me with some pointers on how to produce this look again?

Thanks for all the help.

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  Making a tool preset
Posted by: rich2005 - 04-17-2017, 09:53 AM - Forum: Tutorials and tips - No Replies

A problem with making painting tool presets (in this example pencil) came up in another section. 

The starting point in the Gimp docs is https://docs.gimp.org/en/gimp-dialogs-mi...ets-dialog

I am no expert on their creation, but as a quick demo, this little video on basic creation, duration 3 minutes.



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  Tool Preset Issue
Posted by: Just Fred - 04-16-2017, 04:41 PM - Forum: General questions - Replies (8)

I create a new pencil tool preset that is a simple 15 x 15 pixel square and save it as Square 15. I create another pencil preset tool that is a 25 x 25 pixel square and save it as Square 25. When I go to use the tools the Square 15 tool has changed to 25 x 25. Both tools are the same.

I've created tool presets in the past without issue. Is there some check box or preference or option I have failed to set?

Using Gimp 2.8.10

Thanks Fred

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  GIMP + Genius 8x6 Tablet + Win 10 = ? *EDITED*
Posted by: andreim - 04-15-2017, 06:59 PM - Forum: General questions - Replies (2)

Hello fellows.
I've been trying to make my Genius MousePen 8x6 tablet work with GIMP in Windows 10 all day long today. I've searched on the web about it and couldn't get any working solution.
My curiosity: does anybody use this tablet with GIMP in Windows 10?

I can draw with it but as a mouse, ignoring pressure sensitivity.
It doesn't show up in GIMP input devices. I checked out extended input devices - not in there; I tried both with/without directx but all in vain.

I've installed the driver 5.02 (D20131030_D20130918V3) which is for Windows 8 but it installed just fine. The control panel from the system tray (lower right near the clock) works fine.
I can draw into the panel itself with sensitivity but that's about all.

Happy Easter!

EDIT:
By repeatedly installing/uninstalling the driver and messing with the registry ("SupportTabletPC" set to 0 or 1) I managed to bring the tablet up into GIMP (in extended input devices).
Now the problem is, when enabled, the pen behaves erratic: when I touch the tablet it performs quick right-clicks and middle-clicks in rapid succession - brief appearance of the popup menu and the cross-arrow moving the view.
When disabled, it behaves like a mouse and I'm back to the old problem - drawing without pressure.

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