02-26-2023, 10:34 AM
Just figured something out. Make a mask using the scanlines in GMIC. It's under degradations. Open a blank canvas the same size as your images (preferrably white) and then open the filter in GMIC. Use all the defaults but you may want to make the bandwidth thicker or thinner. Press ok.
Back in gimp add a black layer and move below your scanlines layer.
Select the scanlines layer and put on hard mix layer mode. merge down and if need be rotate your mask.
Now for your first image
1. Open it and add a white mask (full opacity).
2. Copy the mask you just made then turn the eye off so it is invisible.
3. Go back to your white mask and select it,
4. click on edit - paste as new layer in place - you will have to anchor it.
5. Apply mask
Now with the second image - Go to the mask you made and reverse the colours. Colour - invert.
1. Open your image and add a white mask
Follow 2-5.
Now you should have two images in alternating strips
Back in gimp add a black layer and move below your scanlines layer.
Select the scanlines layer and put on hard mix layer mode. merge down and if need be rotate your mask.
Now for your first image
1. Open it and add a white mask (full opacity).
2. Copy the mask you just made then turn the eye off so it is invisible.
3. Go back to your white mask and select it,
4. click on edit - paste as new layer in place - you will have to anchor it.
5. Apply mask
Now with the second image - Go to the mask you made and reverse the colours. Colour - invert.
1. Open your image and add a white mask
Follow 2-5.
Now you should have two images in alternating strips
