StarOffice: Slide sorter slow

[Alan Jackson]

On Wed, 24 Mar 2004 07:07:31 -0500
Joel Hammer <joel at hammershome.com> wrote:

> I just take a picture without resizing it with a
> digital photomicroscope. This gives images in the 2-3 meg
> range. Clearly more than I need, but, I don't know how to
> reduce the size automatically. I have several users taking
> pictures, and they want the easiest method possible. I
> work for them, they don't work for me.
> 

Remember that picture size in bytes goes like the square of the
size, so shrinking the picture to a pixel height and width appropriate
for your presentation could save lots of disk, I/O, and memory.

I use Imagemagick convert to automatically scale pictures, for example :

$ more makethumb
#!/bin/sh
convert -geometry 227x170 $1 `echo $1 | sed 's/\.j/_th.j/'`

or a bit more sophisticated :

#!/usr/bin/perl -w
use strict;
opendir(DIR,  ".") ;
my @files = readdir(DIR);
close DIR;
my @datafiles = grep (/jpe?g$|gif$/, at files);
@datafiles = grep (!/_th\./, at datafiles);
foreach (@datafiles) {
     my $thumb = $_;
     $thumb =~ s/\.(jpg|gif|jpeg)/_th.$1/;
     if (! -e $thumb) {
         `convert -size 150x150 $_ -resize 150 +profile "*" $thumb`;
     }
}



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| Alan K. Jackson            | To see a World in a Grain of Sand      |
| alan at ajackson.org          | And a Heaven in a Wild Flower,         |
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