[Boatanchors] [Milsurplus] Need software to change blueprint to blackline

[Mike A]

On Sat, Jan 19, 2013 at 07:06:37PM -0500, WA5CAB at cs.com wrote:
> Groups,
> 
> I received a file from another member of several of these lists asking 
> whether I could turn several blueprints in to regular black on white.  The parts 
> are specifically machinery parts to make but I also acquired recently a 
> couple of radio manuals worth scanning with for some strange reason the 
> schematics as blueprints.  Hence the wide distribution.
> 
> Does anyone know of any software that can turn a scanned negative or 
> blueprint into a positive (black lines on white)?  If so, please tell me what it 
> is.  I actually thought I had done some of this a few years ago but when I 
> went to try to find what I did it with, the cupboard was bare.  It would also 
> be nice if the application costs less than AutoCad!

One freeware graphics editor that should be able to do it is Gimp, downloadable
last I knew from http://www.gimp.org for Windows, Linux, and Unix. I use it
heavily.

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin