Raster > vector conversions

The raster > vector conversion would be the best way to digitize paper maps. Scanning paper maps is fast and easy, but to tach an application to understand the special structure of vector maps is very difficult or even impossible. The raster image is just a matrix of pixels and a conversion software is an artificial intelligence which try to form a point-line-are structure.
It is impossible to vectorize all kind of scanned paper maps, but in special cases it is working (scan only the film of contoru lines and vectorize is probably the most successful process.

Vectorization software (R2V) for GIS and CAD users

The sample of authomatic vectorization (without sense)
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Suggestions are welcome