02-13-2021, 09:18 PM
Vectorizing is an approximation by definition. If you want a perfect image with vectors, you do vectors from the start. And you build your image with layers that overlap. For instance, at the top left, the streak of yellow would be painted across/over a single streak of red, so that there would be no gap between red and yellow, and Gimp would correctly render the edge between red and yellow
For what I see of your image, you can have, top to bottom:
- Black
- Yellow
- Red
- Dark gray
- Light gray
Where the lower layers bleed a bit under the layers above them(*). Only the top layer needs to be accurate (same as when painting in the physical world). See attached XCF.
Once you have an image like this your paths are obtained from an alpha-selection of each layer, and you can scale and rebuild the image by scaling the paths and filling them in the right order.
* Over/under cases are implemented by having two copies of the same layer at various levels, with bits shaved off
For what I see of your image, you can have, top to bottom:
- Black
- Yellow
- Red
- Dark gray
- Light gray
Where the lower layers bleed a bit under the layers above them(*). Only the top layer needs to be accurate (same as when painting in the physical world). See attached XCF.
Once you have an image like this your paths are obtained from an alpha-selection of each layer, and you can scale and rebuild the image by scaling the paths and filling them in the right order.
* Over/under cases are implemented by having two copies of the same layer at various levels, with bits shaved off