I have a pdf of a street map which is many different colors depending on land use.
I need to import it into ArcMap and then digitize it. Obviously I could manually create each feature but that would take days. I've done some reading and it appears that I can use the ArcScan method to automatically create vectors from the pdf.
I have converted it to a tif image and then imported it into ArcMap. I understand it needs to be two colors only in order to get ArcScan to work. I try reclassifying the raster with just two classes to make it two colors but when I do this I lose a whole bunchof the streets. This seems to be because they fall into certain landuses which are colored specifically (purple, blue orange and green). I have tried manually assigning the breaks, but it seems that all of these colors are lumped into one group right at the end of the distribution graph in the classification, so there's seemingly no way to separate them which results in me losing all this data.
Does anyone know a way around this, or a better way to quickly digitize street map data from a pdf in arcmap?