On Tue, Jul 15, 2008 at 1:47 PM, Chris Geldenhuis chris.gelden@iafrica.com wrote:

Hi All,

I have been Googling my head off but cannot find a method to stream edit all the images in a directory and to resize them. I have a large number of images of up to 3GB in size that I want to put in albums on a website, but before I do this I need to resize them to a more realistic configuration.

I know how to do this manually with the GIMP but it becomes tedious for more than a few images.

imagemagick is what you want.

http://www.imagemagick.org/Usage/resize/

for i in *.. blah.

Running CentOS 5 as virtualised under XEN as a web server.

TIA

ChrisG _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Chris Geldenhuis wrote:

Hi All,

I have been Googling my head off but cannot find a method to stream edit all the images in a directory and to resize them. I have a large number of images of up to 3GB in size that I want to put in albums on a website, but before I do this I need to resize them to a more realistic configuration.

I know how to do this manually with the GIMP but it becomes tedious for more than a few images.

imagemagick can do this, its a command line batch image editor. its a little tricky to figure out. I note its in the base Centos5 repository.

docs on http://www.imagemagick.org/script/index.php

On Tue, Jul 15, 2008 at 09:47:26PM +0200, Chris Geldenhuis wrote:

I have been Googling my head off but cannot find a method to stream edit all the images in a directory and to resize them. I have a large number of images of up to 3GB in size that I want to put in albums on a website, but before I do this I need to resize them to a more realistic configuration.

I know how to do this manually with the GIMP but it becomes tedious for more than a few images.

Running CentOS 5 as virtualised under XEN as a web server.

I wrote a shell script to do just that, attached below. It requires a couple of readily available command line tools from the packages:

netpbm-progs libjpeg

And of course you can tune the scaling and quality to suit your needs.

HTH Chris -- Chris Payne chris.payne@triumf.ca TRIUMF ATLAS Tier-1 System Administrator - Networking TRIUMF +1 604 222 7554 4004 Wesbrook Mall, Vancouver, BC, V6T2A3, CANADA

#!/bin/sh for file in $* ; do base=`basename $file` # change depending on your camera file extension prefix=`echo $base | sed -e "s/.jpg//i"` # prefix=`echo $base | sed -e "s/.jpeg//i"` if [ -f $prefix.small.jpeg ] ; then echo skippin $file else echo shrinkin $file jpegtopnm $file | pnmscale .35 | cjpeg -quality 75 > $prefix.small.jpg fi done

Chris Geldenhuis wrote:

Hi All,

I have been Googling my head off but cannot find a method to stream edit all the images in a directory and to resize them. I have a large number of images of up to 3GB in size that I want to put in albums on a website, but before I do this I need to resize them to a more realistic configuration.

I know how to do this manually with the GIMP but it becomes tedious for more than a few images.

Running CentOS 5 as virtualised under XEN as a web server.

TIA

ChrisG _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

OOPS - Found it using different keywords "gimp command line"

Thanks

ChrisG