In this easy GIMP exercise you'll combine two images together into a nice, blended single image with two views of the same subject.
Some of the things you will do in this lesson:
- Create a new image of a specific size
- Select and copy an entire image
- Paste a new layer from the clipboard
- Use a layer mask with the Blend Tool
These images will be very large, so the first task is to resize the two images to a smaller easier-to-work-with size, but more importantly, so that both images are the same height, Image > Scale Image… . I resized both to have a height of 1200 pixels,
Create a new image, File > New…, with the same height (1200 pixels) and a width approximately equal to the sum of the widths of the two source images (2300 pixels).
Select all of Image B, Select > All (or Ctrl+A). and copy it, Edit > Copy (Ctrl+C). Paste it onto the new image as a new layer, Edit > Paste as > New Layer. It will appear as a new layer named Clipboard. Rename it as Layer B. Use the Move Tool to position Layer B a bit right of center in the new image.
Repeat this process with Image A, naming this layer Layer A. Position Layer A a bit left of center in the new image, overlapping Layer B.
Add a white (full opacity) layer mask to Layer A, Layer > Mask > Add Layer Mask (or right-click Layer A in the Layers pallet).
Select the Blend Tool from the Tools pallet, and choose the foreground-to-background (default colors) linear gradient in the Tool settings. Click and drag the cursor horizontally from the right edge of Layer A to gradually fade in the overlapping portion (to about the middle of Layer A).
Finally, with the Crop Tool, remove the excess background area of the image. You now should have a nicely blended image combining two portraits of the model.
I'm going to apply each of two different effects to Layer A as possible extensions to this project. (Be sure Layer A is the active layer in the Layers pallet before applying any of these effects.)
Desaturate Layer A
Remove the color from Layer A, Colors > Desaturate.
Blur Layer A
Add a Gaussian blur to Layer A, Filter > Blur > Gaussian…, with a Radius of about 20.
Be bold and creative, experiment with as many effects and filters as you like.