Algorithms behind 4-Scan

4-Scan uses 2 algorithms:

1. In the mode „simple“ Potrace(TM) is active.
   Potrace is a project developed by Peter Seliger.
   http://potrace.sourceforge.net/
   This algorithm is fast and perfect for most images.
   It does not trace multi-colored images and it does not provide a centerline mode.
   
2. the „enhanced“ mode of 4-Scan uses Autotrace.
   Autotrace developed by Martin Weber.
   https://github.com/autotrace
   It uses more parameters to trace images in bad quality.
   Multi-colored images are supported and a centerline mode is integrated.

Both alorithms support 64 bit processors.