AbleTracer

If you want to edit a raster file in your CAD program, you first have to convert it to a vector file. AbleTracer does just that, transforming scanned paper drawings into a vector format. It looks like a typical graphics program, with toolbars and floating palettes, you can edit raster image, vectorize it and edit the vector drawing. AbleTracer also offers TWAIN support for importing images directly from scanners.