I think you can do it a few ways. Use a professional scanner, VID talks about this with scanning playfields. Places like office stores and such have large format scanners. Otherwise you can use a business/home scanner but you'll have to stitch the pictures together.
Then you could print to vinyl or translite material and just use plexi or glass and treat like a new style translite. I haven't done this yet, but if someone knows something better, they'll post up!