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Step 11Smooth the edges
You can try skipping this step, however you may find that AutoTrace traces a bit too accurately, and you end up with a mass of fine lines. If that happens, you need to do the following.
The edges of the tracks will still look quite rough. The best way to clean them is to trace the image in a vector editor program such as Inkscape. The tracing can then be exported as a .png.
In Inkscape, open the file you made in the last step. Don't worry about it fitting the page. Click the image to select it (black arrows will appear around it). Open the tracing dialogue (Path > Trace Bitmap). You may need to have a few goes at it. Try the defaults first before playing with the settings.
If you click the image, you will find you can drag the tracing and the original bitmap. Delete the original. The image you now have is made of vectors, which you can click and move around and deform individually. If you are unfamiliar with vectors, take the opportunity to have a play. You need a bitmap image to work with, so export the file (File > Export Bitmap). You'll see a lot of scary looking numbers, but you shouldn't need to change anything except possibly the save directory and file name. Click "Export".
Open the file in the Gimp and examine it carefully - you may find spots merged together or pinched off, and will need to paint in corrections to these.
The edges of the tracks will still look quite rough. The best way to clean them is to trace the image in a vector editor program such as Inkscape. The tracing can then be exported as a .png.
In Inkscape, open the file you made in the last step. Don't worry about it fitting the page. Click the image to select it (black arrows will appear around it). Open the tracing dialogue (Path > Trace Bitmap). You may need to have a few goes at it. Try the defaults first before playing with the settings.
If you click the image, you will find you can drag the tracing and the original bitmap. Delete the original. The image you now have is made of vectors, which you can click and move around and deform individually. If you are unfamiliar with vectors, take the opportunity to have a play. You need a bitmap image to work with, so export the file (File > Export Bitmap). You'll see a lot of scary looking numbers, but you shouldn't need to change anything except possibly the save directory and file name. Click "Export".
Open the file in the Gimp and examine it carefully - you may find spots merged together or pinched off, and will need to paint in corrections to these.
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