This limits their usefulness with architectural and similar drawings. Pro has an Ortho mode with corner sharpening to retain drawing orthogonality and ensure that lines connect at 90 . It can be switched off for free-flowing drawings with organic shapes, like maps and some mechanical drawings. Some programs cannot distinguish between crossing and joining lines and identify two lines that cross as four lines that join. Scan2CAD Pro can distinguish between lines that cross and lines that join to give better quality recognition at line junctions.
Some programs only vectorize.
Scan2CAD Pro's SnapTidy vector editing tools make light of what is often hard work in any CAD program. Very few programs that claim to convert color drawings actually output a color vector file. The user must then reset the colors in the target CAD program. Better, it maps the color DXF output match the color palette of your CAD program. Programs that vectorize color images by reducing them to black perform line vectorization only, the easiest method to implement.