"Peter Desjardins" on wrote...
| That worked very well. Thanks!
|
| Questions:
|
| 1. Why set the density to 400 and then reduce the size? I
got similarly
| good results by setting the density to 150 and leaving
it at full
| size.
|
In your case with as final conversion to black and white it
may not
provide much of an advantage.
This trechnique is typically used to improve the
anti-aliasin of edges
in color and greyscale images.
However that does not mean it isn't useful. It will help
remove any
speckes that the scan may have picked up.
However as you scanned the image. the image in the PDF is
probably
already a raster! That makes things more difficult as
ideally you want
to pull out that raster image without the PDF resizing it
for a
particular Resolution/density.
That way you get the best image without either pixelation,
or resize
loss of the actual scanned data.
Hmmm... There was a thread about extracting rasters from EPS
documents
a long time ago, but it was never finalized. The solution
that was
developed was to attempt to figure out the 'best density' to
use to
extract the raster image from an EPS with bounding box
info.
It was a very specific solution, but the principles apply.
Does anyone know of a good way to get Ghostscript to extract
rasters
without density change from PDF's or Postscript? Google
search?
Anthony Thyssen ( System Programmer ) <A.Thyssen griffith.edu.au>
-----------------------------------------------------------
------------------
"Death is dead; long live Death!" -
Purgatory News Caster
-- Piers Anthony `On
a Pale Horse'
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Anthony's Home is his Castle http://www.cit.gu.
edu.au/~anthony/
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