Repeat the above steps for the Red and Green layers, Fill in the dialog box as shown (enter 0 for Red, 0 for Green, and 100 for Blue)Į. Colorize each layer using the following directionsĬ. Arrange the layers so that they are in order, from top toĤ. Start GIMP and open all of the files as layers, as shown:Ģ. Creating a Combined RGB Image Using GIMPġ. Right-click each image and download it, then follow the steps in this tutorial. Here are three images, one for each filter, of NGC 1514 – right-click each image to download it and follow along in this tutorial. The details are in this article: Using To Combine Three Mono Images Into One RGB. There is a better approach that you can use, that doesn’t involve installing any software on your system and provides a better result. I assume you have three mono images, one for each filter of red, blue, and green. This article addresses how to do just that. It did not.I frequently get asked about how to combine three mono images into one RGB using GIMP. I uninstalled, re-downloaded, and then reinstalled GIMP 2.10.10 from the website to see if it fixed the issue.

Selection area disappears or wrongly selects random image pixelsĮxpected result: Selection area is invertedĪctual result: Selection area disappears or malfunctions Additional information.

Go to Select>Invert or hit ctrl+i on keyboard.Draw a selection area with any selection tool or Select All.There was another instance where I tried to invert the selection and it selected a bunch of random pixels towards the top of my image (this happened twice). If I draw a selection area (be it a rectangle, ellipse, or by selecting all with shift+a) and then attempt to invert it either via shortcut or the main menu (Select>Invert) the selection area just disappears (almost as if I went to Select>None). The Select>Invert option appears to be broken in GIMP 2.10.10. Package: Direct download from downloads page Description of the bug

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