RE: VMs: RE: Map scans now posted...

[Nick Pelling <incoming@xxxxxxxxxxxxxxxxx>]

Hi everyone,

At 19:27 19/06/2003 -0500, GC wrote:
> However, most scanners have
> settings that are fractional integers of their total capability - a 1200
> scanner can interpolate 2400 or 4800, but still actually scans at 1200, and
> does its best at 75, 150, 300, 600, and 1200.

FWIW, I'm pretty sure that the scanner I was using was 1200dpi, which 
should give an interpolation-free 400dpi result. I've worked on 
interpolation algorithms on and off for 15 years, so I'm fairly sure I'm 
right on this one. :-)

> That in itself should be
> sufficient to conclude that scans over 300 dpi for medieval manuscripts are
> unnecessary.

I just want the higher resolution so I can try to filter the half-tone out 
and see what's there to see once you do. A much better solution (once the 
Beinecke has finished restoring the VMS - the map pages were especially in 
need of restoration, AIUI) would be a decent modern scan, but what can you 
do? :-o

Cheers, .....Nick Pelling..... 


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