My organisation has alot of drawings that are hand drawn. An attempt was made years ago to scan these drawings in TIFF format. Is there any way to convert .TIFF / pdf CAD Drawings to a dgn microstation format?
As Jerry said, Descartes can allow you to vectorize your drawing if the drawing has only two colors (e.g. : black and white).
Check this wiki page for more information : communities.bentley.com/.../bentley-descartes-raster-vectorization.aspx
I forgot to mention that the vectorize tool can also works with raster having more than two colors if a Color Mask is used.