Hello. I'm running Gimp 2.10 on Linux Mint 20.  I have a standard AFAIK rgb jpg from my android phone.  I am having trouble with the clone tool selecting a source.  I have got it to sometimes, but mostly not.  I don't know what I did to make it work, but it now won't work again.  

I know about holding ctrl to select source, then releasing it. But it's not working and  doesn't leave the source brush behind and sometimes leaves the error message to set a clone source - which disappears at some point (again, I can't make it go, not sure what the trigger is).

I am also having problems with the dodge/burn not toggling too.  
I've used the clone tool loads before with no problems, but I'm an intermittent user but have been for many years.
I also previously installed the resynthesiser plugin - could this be linked?

If anyone could help, I'd appreciate it as I've used up a load of time getting nowhere.
Many thanks

I tried to use the Formula in the manual but the results are similar to when I use Subtract and Addition Modes in Gimp when using MixRGB Nodes in Blender.
 I tried separating the RGB channels and did a straight up calculation on each channel and the results look to washed out. 

I looked in the code at github and is says:

[blendModeKeys.GRAIN_EXTRACT]: (i, m) => (
i - m + 0.5

I attached a pic of the Node Setup and the results and what it should look like.
Anybody know what the problem is?

Attached Files

Thumbnail(s)
   

Hi, I installed gimp a while ago and sharpened worked for a bit then stopped. Now it doesn't show as highlighted? Or whatever you call it, I try to click it and it doesn't work for me? I operate on Windows 10 Vista. I also put a picture below to show what I mean.

Hello,

I have split an image with guides and now have quite a few images. I would like to export all of them, but then I would have to click on export for each image.

Is there a better way?

Hi all! I'm trying to work out a script that I can use to reduce the size of an image by half. However, I need this to work with images of different sizes, but I always want them to be scaled to half their size. I know that this code exists:

It is sometimes needed to add an object in an image and make it look part of it by appearing behind foreground elements and in front of background elements. With the proper technique this isn't difficult:

• Add the object in a new layer
  
• Duplicate the image layer
  
• Move the copy above the object layer (which is sandwiched between the two images)
  
• Using a layer mask, erase the top image except where it is in the immediate vicinity of the object: you start by removing most of the image (big brush or bucket-fill with a selection), remove most of the rest with a small brush, and shave off the outline where needed with a soft brush.
  
• The only place where erasure should be accurate is where a foreground element intersects the inserted object
  

   

• The layer group is not strictly necessary. It is  used for demo purposes so the group thumbnail shows the effect of the mask
  
• You can see how little of the "copy" you need
  
• The image a good example... cutting out the whole cat properly with all the hairs would have been a daunting task (1600 pixels of fuzziness). But here the only place where we need a sharp cut in on the ears, which are not fuzzy (200 pixels of sharpness), as shown by the red lines below:
  

   

Can one set the aspect ratio toggle switch from the 'Set Image Canvas Size' always 'on'  (locked) ?
   

Raw images taken with digital cameras contain raw sensor data. Such files can yield much better images than standard JPEGs but they must be “developed” using custom software, and this task takes time.
Raw files contain also an embedded jpeg image, already developed by the camera. This preview can be used to quickly show the image content, for example.

ERawP extracts the embedded previews from raw files and saves them in separate files. It can be useful if you need a reasonable approximation of the images and you do not want to spend time developing all the files. For example you might want to send the images to a friend by e-mail.

http://www.fsoft.it/ERawP/

Dear Sirs
How do I "drop" the g-code plug-in into the GIMP plug in folder?

Regards
John

    I took a logo and put it into RGB mode, and then added an alpha channel.  I then cut the background color to make the logo transparent.  After changing the canvas size, I now have an unwanted border around the image.  How can I get rid of this border, so I can continue editing the way I'd like?