[Milsurplus] B-24 radio log sheet 1944

[WA5CAB at cs.com]

Hue,

IrfanView, for a few of its plugins, has a "Replace Color" feature (so do 
some high-end editors but they cost big bucks).  The two that I've used this 
on are JPG and TIF.  PDF isn't one of them, so if the scan meets another 
criteriia but is PDF, you will have to do a SAVE AS first to convert the file 
format before trying it.  If the document was scanned in color (normally the 
wrong thing to do with a B&W original) as either TIF or JPG, and if the 
background color is pretty uniform so that the replacement only takes a few 
iterations, you can replace the background color with white with only 3 or 4 
mouse clicks per iteration.  If the background color isn't pretty uniform, you 
can eventually get a white background but each step is prone to slightly 
blur the remaining text or line drawing (such as a schematic).  And by the time 
you are rid of all of the background, you can't read what's left.  If you 
can do it in 2 or 3 iterations, it's like magic.

In a message dated 03/11/2017 22:20:24 PM Central Standard Time, 
Kargo_cult at msn.com writes: 
> but the form is way too dark, about paper bag darkness

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480
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