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.
2. Here's the script I'm working on. PDFs that contain more than one
page result in animated GIFs with a frame for each page. Would it
be best to write a separate command to find any multi-frame GIFs
and break them into separate image files?
#!/bin/bash
#
# Convert scanned images from various formats to
# moderate resolution, black and white, GIF
for ORIG_FILE in `ls *.pdf *.gif *.tif *.jpg`
do
echo "Converting $ORIG_FILE to ${ORIG_FILE%.*}.gif"
convert -density 400 $ORIG_FILE -resize 50% -monochrome
${ORIG_FILE%.*}.gif
done
echo "Done"
# End of script
Peter Desjardins
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
> Sent: Monday, April 02, 2007 15:30
> To: [email protected]; Peter Desjardins
> Subject: Re: [magick-users] Image quality after resampling is
> not good - am I using the wrong options?
>
> > The source images are in most cases PDF and often 300ppi with color
>
> Try the following
>
> convert -density 400 too-big-scan.pdf -resize 50%
> just-right-size.gif
>
> Throw in a -monochrome or a +dither -monochrome to create
> black/white images.
>
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