Hi all I'm wanting to blend 2 layers together for a heightmap (where the red lines I have drawn)

Also is there a way to get the magic wand to select an area kind of like where the red lines area If I were the merge the 2 layers together rather than draw it manually with the free select tool? thanks

Hello, I am attempting to make a script of mine more efficient. I am trying to replicate the output of using posterize with the color-erase blending option in python without leaning heavily on gimp. Below is showing how posterize can influence an image's appearance.  

As you can see, this is what it looks like when I take the original photo, remove the alpha channel, and posterize. Below is one of the more interesting outcomes for the color-erase blending option when applied with the posterize tool.

The step, by step instructions to get this effect:
1. Open image
2. Remove alpha channel of image by right clicking in layer menu
3. Select posterize from the color dropdown menu in the main window
4. In the posterize menu, select the color-erase blending mode and put the slider anywhere between 3 and 254.
Here's how to programmatically achieve the effect with Python-fu for 2.10:

How do I fill all the areas (non contiguous ones) of the same colour with one click ? 
... without having to click on each non contiguous area

Regards,
Leamphil

Took 15 mins to make it, check it out: https://ibb.co/SfL059K

I manipulate a lot of images.
I find it time consuming to click eg. 

filters-->blur-->Gaussian--> ok
then
Colors --> saturation --> Ok
then
filters-->enhance-->sharpen--> ok

then repeat the whole sequence for 1000+ images.

I prefer:
to be able to put Shortcut icons for predefined options in tools eg. Blur icon with predefined blurring.
to be able to group actions in new shortcut icons e.g blur-sharpen-saturation -> BSS shortcut icon.

In that way, the whole image processing will be speed up


I dont know if someone can make an addon for such thing.
It will be HUGE advantage of GIMP.

Please assume I am  a dummy, you wont be far wrong! 

   How do I create a template?  How can I select from my pics and cut and paste into a template?  

    Step by step please!


Yours MJC.

From this:

   

   

• Straighten the picture using the measure tool, taking the corner of the building across the street as a reference (best take the reference near the center of the picture because it is not subject to perspective convergence, and anyway the facade of the building to the right isn't vertical...)
  
• Crop the picture to taste
  
• There is a large blue flower pot to the right that creates a nasty blue reflection on the fender. Fixed by sampling the car color, and painting over the pot reflection  in "Lch color" mode.
  

   

• Make a path around the car (about 120 points)
  
• Make a path around the windows (everywhere they are transparent or reflect something)
  
• Using the windows path as a selection, copy/paste the windows on another layer
  
• Make a copy of the image and colorize it (Colors> Colorize). The color is picked to have a hue about 180° from the car color (car color is H=240°, so colorization uses H=60°)  
  
• Duplicate that colorize layer and  blur the copy
  
• Create a selection from the outline path (Path to selection), and subtract the windows path (Subtract from selection)
  
• On the initial image, create a layer mask and initialize it to the selection. You should end up with the car in original color over the "sharp" colorized layer
  
• Add a layer mask on the colorized layer, and make a gradient to go from  a sharp image in the front to a blurred background
  
• Adjust the opacity of the windows layer so that transparencies and reflections are between the original colors and the colorized background.
  

In the evenings I like to pull out my old Acer C720 chromebook - no chrome here, it runs on a 32bit Xubuntu.

I am not into computer games but I do run a 1992 DOS Scrabble, playing against the computer and I did try to get a GIMP for you to see but had to use a 'wild-card'. This uses the official scrabble dictionary of the time. No modern words permitted.

   

A couple of days ago, even older, I found a 3.5" floppy with a DOS Tetris from 1988. I will have played this on my Amstrad DOS 3.3 with two 720MB floppy drives but no colour, a greenscreen monitor.  A nice touch, not a screensaver, a job-saver, in case the boss is snooping. Hit the pause key and you get a fake spreadsheet, looks a bit SuperCalc-ish but a giveaway is the date '1 April'

   

Color to Alpha on this older Gimp had always had multiple options; foreground, background, black, white, and a thing to click to choose a specific color. Nothing has been updated or otherwise changed on my computer, and I haven't done anything to Gimp either, but suddenly, Color to Alpha ONLY gives me the thing to click to choose a specific color, the other options have just VANISHED! I use these options a lot in my art, and they appear to not exist in the current Gimp… the controls are so complex that I can't be sure, lol… so I really need my previous options back! Can anyone tell me how to do that… and/or, how my options vanished in the first place? Thanks!

Hi, I'm trying to improve the laggy performance, in particular lag related to my Wacom pen. I read previous threads about "hardware acceleration" in "playground" but was not able to find in system resources. Not sure what the best solve here is.

Thank you so much for any help or suggestions.