03-15-2019, 07:46 PM
(03-14-2019, 10:02 AM)Blighty Wrote: Without seeing an example image this is a bit of guess.
Assuming your scan is black lines on a white background. Well, almost white background.
1. Use Colors > Brightness-Contrast to increase the contrast.
2. Use Colors > Color to Alpha to make the white transparent. For Color to Alpha to work you need 2 things: Image must be RGB; there must be an alpha channel.
3. Create a new transparent layer below the original image.
4. In the layers dialogue, select the original image layer.
5. Use the selection tools to make a selection on area to be coloured.
6. Select > Grow by a suitable amount, probably 3 to 4 pixels.
7. In the layers dialogue select the new, lower transparent layer.
8. On this layer bucket fill the selection.
Thanks for this!
Yes, it's black on a white background. Increasing the contrast makes it look sharper which is great. I've used 'Select > Grow' which works really well.
Honestly, I got confused by the process of adding a transparent layer. I couldn't do it. Total newbie here...your instructions are clear so it's my bad. What is the advantage of creating a new layer as opposed to just using the grow function on the image? I'll be saving it as a PDF and exporting it if that makes any difference.