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  How to erase (clear) pixels near edges?
Posted by: ajax - 08-12-2021, 04:33 PM - Forum: General questions - Replies (3)

When attempting to remove backgrounds from an image, I think, the idea is to select the applicable area and then clear (delete/erase) the selected area.  This makes the selected area transparent.  Select by color can be effective but typically a small area near the edge of the object (i.e., portion of the image being preserved) is NOT handled accurately.  In that, pixels to be removed remain or pixels to be keep get selected for removal.  It becomes quite difficult to use the various selection tools to include these pixels.

It would seem that being able to use the various brush (painting) tools for this task would be desirable.  For example, I tried using the Clone Tool but it appears that transparency cannot be cloned.  In that pixels can be cloned but NOT the absence of pixels.  Setting Hardness to zero is NO help.

Is there a way to use Brush Tools like the Clone Tool to make the target area Transparent?

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  Where the fonts come from?
Posted by: jerryemerydelacruz - 08-11-2021, 09:40 PM - Forum: General questions - Replies (5)

I just installed Gimp 2.10.24 on a new computer, and it's reading the fonts from the Windows Font folder even though that folder isn't listed as a font folder in the Preferences>Folders>Fonts.  All of the font folders in Preferences are empty.  Is there a way to prevent Gimp from loading the Windows fonts and only load the Fonts I put in the folders listed under Preferences?


I changed the permissions of the fonts.conf file in Program Files>Gimp2/etc/fonts. Opened the file with Notepad and removed the line <dir>WINDOWSFONTDIR</dir>. I then copied a ttf font to the Program Files>Gimp 2>share>gimp>2.0>fonts folder and restarted Gimp. Now it only shows the one font, so this seems to work.

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  Batch convert Jpeg into monochrome pcx
Posted by: BubbleFritten - 08-11-2021, 06:09 PM - Forum: Scripting questions - Replies (1)

Hello,

i want to convert some jpeg's to monochrome pcx. To solve the problems step by step  my first try is to convert to monochrome jpg, but this didn't work.
The saved picture is still colorized. Even if i try the greyscale command it's colorized.
What's wrong with the script?


Code:
(define (convert-mono pattern )
(let* ((filelist (cadr (file-glob pattern 1))))
(while (not (null? filelist))
(let* ((filename (car filelist))
(image (car (gimp-file-load RUN-NONINTERACTIVE filename filename)))
(gimp-image-convert-indexed image CONVERT-DITHER-NONE CONVERT-PALETTE-MONO 0 0 1 "" )
(drawable (car (gimp-image-get-active-layer image))))
(gimp-file-save RUN-NONINTERACTIVE image drawable filename filename)
(gimp-image-delete image))
(set! filelist (cdr filelist)))))
EDIT
for testing purposes i have made the following version, it didn't work.
The result is not grayscaled.

Code:
(define (convert-mono pattern )
(let* ((filelist (cadr (file-glob pattern 1))))
 (while (not (null? filelist))
 (let* (
       (filename (car filelist))
       (destination_file "")
       (image (car (gimp-file-load RUN-NONINTERACTIVE filename filename)))
     (drawable (car (gimp-image-flatten image)))
     (gimp-image-convert-grayscale image)
       )
       
  (set! destination_file (string-append "out-" filename))
  (gimp-file-save RUN-NONINTERACTIVE image drawable destination_file destination_file)
  (gimp-image-delete image)
 )
 
 (set! filelist (cdr filelist)))
)
)

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  Turn text into a mask
Posted by: dfansler - 08-11-2021, 01:41 PM - Forum: General questions - Replies (3)

I am running GIMP 2.10.20 (revision 1).  I am designing a logo for my boat - the name is Dragon Fire.  I have an image of dragon breathing fire, along with the text "Dragon Fire"  Rather than having solid color text, I decided to make the text filled with the flame.  So I made a new layer and copied the flame into it.  The flame has been placed under the text.  This flame layer is just beneath the text layer.

I did a rectangular selection of the text (which has a transparent background) and made a mask using the selection.  I subtracted this from the flame layer, but got a rectangular product.

How can I turn the text itself into a mask to subtract from the flame?

Thanks,
David

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  Newbie: Fade into white via selection
Posted by: Christian - 08-11-2021, 07:21 AM - Forum: General questions - Replies (2)

Hi all,

as a Newbie I searched and watched on Youtube how to create a fade into a picture.

I want to make a selection of my face and then fade the background into white.

I am successful doing this with a AddMask (white) and the Gradient Tool. But this is just a vertical fade. I want to customize this fade on a specific selection (of my head).

Help appreciated!
Chris

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  Correct pale effect in part of image
Posted by: mand71 - 08-11-2021, 07:17 AM - Forum: General questions - Replies (3)

Hi,
I am experimenting with enhancement of old images.
The text and image on the right bottom are pale.
I would like the color darkness on the text and images on the right bottom the same as left top.
How to accomplish that in gimp.
Thank you and have a great day.
Mandy



Attached Files Thumbnail(s)
   
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  Batch Color Saturation
Posted by: firefly - 08-10-2021, 04:55 PM - Forum: Extending the GIMP - Replies (15)

How do I do batch Color Saturation?  I don't see an option in the Batch Manipulation menu and I don't want to use Hue Saturation.

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  Scaling layers
Posted by: FAMOsa - 08-10-2021, 11:52 AM - Forum: General questions - Replies (5)

Hello.  Thank you all in advance.

I make a lot of composite pictures with many layers.  I import an image as a layer and then I click on it and on the scale tool and I get a little grid over the layer and I can adjust the size as I like.  I have done this many time, but in one document the scale tool is acting fishy.  I get the grid, but it is not the same as the layer.  It is some crazy configuration like width=3000 pixels.  height=1 pixel. 
I've tried to reset that tool, both in the gimp preferences and in the reset button in the scale dialog box.  I can never make it go back to the original way of just giving me a grid over the selected layer. 

I would appreciate any help.

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  Find that menu entry
Posted by: rich2005 - 08-09-2021, 08:53 AM - Forum: Tutorials and tips - No Replies

Some plugins are not hidden in a menu but are at the end of a 'nest' of sub-menus. In particular is the Paths Dock where the right-click context menu is long. (1)

   

That is ok for a single use, consecutive repeated use is catered for by the Filters CTRL-F and SHIFT-CTRL-F keyboard shortcuts. (see: 8)

   

An alternative method is using the built-in  Gimp Search.  Press the ? / key (2) and enter the menu name as an entry (3) and it gives a list of possibilities.  Click on the entry (4) and in this case it brings up the plugin dialogue (5)

   

If your memory is not too good, you do not have to be too accurate with the search term, often a partial phrase works (6) and if you are using lots of paths, do not be lazy, give them a name (7) It does help with path plugins.  Back to the beginning, Using the same plugin repeatedly ? Then top of the Filters menu are Repeat functions (8).

   

Note: This is in addition to the Windows -> Help -> Plugin Browser which gives the menu location as text.

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  Why is Gimp wrapping jpeg as pdf for printing?
Posted by: Gump - 08-09-2021, 07:18 AM - Forum: General questions - Replies (3)

Hi,

I've been using Gimp for years but just started having problems printing jpeg.

If I go to print preview it fires up okular pdf viewer and apparently the file is jpeg wrapped in pdf.

If I go straight to print , I select landscape for this image, and I need to expand about 125% to get best use of paper.

However when it prints , it misses off the left ( now bottom ) of the image and leaves white paper above it. Again it looks like it is embedding the jpeg in pdf and then this is what is scaled including the white space at the top ( which in not part of my image but padding of the jpeg into ( I imagine ) a default pdf A4 "page".

image props tells me it is 2700 × 2068 pixels jpeg

linux file command also confirms as jpeg:


Quote:JPEG image data, JFIF standard 1.01, resolution (DPI), density 72x72, segment length 16, comment: "Created with GIMP", baseline, precision 8, 2700x2068, components 3

It is also taking forever ( like literally 2 min ) to send to printer.

If I print the same file from Firefox, I get the right size and placement when scaling output 125% and it's 4x faster sending to printer.

I have not done much work with Gimp recently. Is this really what it is supposed to do with a jpeg now ?

Also the preview tab in the Gimp print dialogue does NOT change with the scaling factor so it does not provide a preview !

I've been a great fan of Gimp over the years but this is not looking good.

Does anyone now what this is about ?
Gimp 2.10.24

Thanks.

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