Robert,
Use the density command to increase the number of pixels in
the image.
For example,
convert -density 1200x1200 study.pdf study.gif
will produce a gif file that is large, i.e, 90515817,
however it is
extremely sharp and can be enlarged many times without any
loss of sharpness.
If you use
convert -density 120x120 study.pdf study.gif
the file is 905297, i.e., about 1/100th size, however the
quality is
unacceptable. You need more dots to get quality.
Joseph
On 16-Sep-2005 Robert Feldbauer wrote:
> I'm trying to turn PDF files into JPG/PNG/whatever kind
of image. The
> problem is that
> I'm taking PDFs of technical documents, and they need
to be clear when
> they're
> printed (after being converted to an image). All
attempts I've made at
> using
> convert.exe with JPG/PNG with -quality 100, various
contrast settings, or
> -enhance result in a less than desirable result.
Anyone have experience
> with
> this problem, or any advice? Thanks!
>
> Robert Feldbauer
> rfeldbauer comcast.net
> _______________________________________________
> Magick-users mailing list
> Magick-usersimagemagick.org
> http://studio.imagemagick.org/mailman/listinfo/magick
-users
>
----------------------------------
Joseph Kolibal
The University of Southern Mississippi
Department of Mathematics
118 College Drive 5045
Hattiesburg, MS 39406-0001
E-mail: Joseph.Kolibalgmail.com or Joseph.Kolibalusm.edu
Office: Room 207 Southern Hall, PH: 601-266-4301
Web Links:
http://delphi.st.usm
.edu/kolibal (Home pages)
http://pax.st.usm.edu/cmi CMI (Computational Mathematics Information)
http://www.usm-lug.org
LUG (USM Linux Users Group)
Further contact:
Department of Mathematics
PH: 601-266-4289/FX: 601-266-5818
http://www.usm.edu/math
Sent: 16-Sep-2005, 22:40:37, Validation:
athena:18351:05.09.16-22.40.37 2571
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