I have a raster image, basically a scanned drawing of the outlines (and some detail) of various objects, and I wish to convert these lines to vectors, using either Illustrator or Inkscape.
My present solution is to have the raster image as a background layer, and in a new layer above it I use the pen to follow the lines as close as possible. Later I tweak these lines to fit the raster image better. That has worked fine for simple drawings. However for some of my extremely complex drawings, this is very tedious to do.
Is there any tool or filter of some sort that is capable of recognizing the lines in line drawings and creating vector paths from them?