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Re: interesting link
Linards Ticmanis wrote:
Michael J. Mahon wrote:
How is best to scan the manual- i.e what format , what dpi , how
large should the ftp size be ?
I'd find a single .pdf the most convenient format, and somewhere
between 200dpi and 300dpi.
I've had very good results with just 150 dpi, when using "oversampling"
during the actual scan.
I agree if grayscale is supported. My numbers were for bitmaps.
The newer Epson scanner software at least can do
this very easily - it's got some stupid, easy to trademark but hard to
remember name though, I think it was "unsharp mask" or some such. I
suspect other manufacturers offer this option too, under different (but
probably still stupid) names. The idea is to scan more pixels and
average them out, just like Font Smoothing and such things do for output.
The name is only stupid when divorced from its long photographic
heritage. It was originally an optical printing technique in
which a blurred negative ("unsharp mask") was made of an original.
Then a copy of the transmissive combination of the original and
the mask was made--this copy contained the difference between the
original and the mask, consisting of only the higher-frequency
components of the original. Finally, a print was made from both
the original and a proportion of the "sharp only" copy, to produce
a print that had enhanced contrast at edges.
-michael
Parallel computing for 8-bit Apple II's!
Home page: http://members.aol.com/MJMahon/
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