Hi,

I am new to scheme scripting. What i want to do is open pictures from a directory and apply a very simple macro.

I can do it manually with the following steps : - open image "the_image.jpg".
- save as .... the_image_with_thumbnail.jpg - choose options : q = 0.85 , progressive, and default other options. - check the option : save thumbnail. - Click OK.
- close image.

Could someone show me some sample scripts to do that ? I've found several way to save a "thumbnail" in jpg or png format in a separate file,
but did not find any script matching the steps i've exposed ...

Thanks for any reply

G.B.

Paul Surgeon a écrit :

On Monday 07 May 2007 11:37, Guillaume Bonillo wrote:

Hi,

I am new to scheme scripting. What i want to do is open pictures from a directory and apply a very simple macro.

I can do it manually with the following steps : - open image "the_image.jpg".
- save as .... the_image_with_thumbnail.jpg - choose options : q = 0.85 , progressive, and default other options. - check the option : save thumbnail. - Click OK.
- close image.

Using a bash script or DOS batch file with imagemagick is a better and easier solution.

Below is a bash script that I use to create thumbnails of photos from my digital camera.
You can pass the jpg quality parameter to convert - I used the default which is 75% I think. The options are in the docs.

-----------------------------

#!/bin/bash

echo "Converting ..."

if [ ! -d "resized-1024x768" ] then
mkdir resized-1024x768
fi

if [ ! -d "resized-256x192" ] then
mkdir resized-256x192
fi

# Loop through all jpg files in current folder # ============================================ for i in *.jpg
do
FileName_Stripped=`echo $i | cut -d. -f1`

if [ ! -e "resized-1024x768/$FileName_Stripped-1024x768.jpg" ] then
echo "Converting $i to $FileName_Stripped-1024x768.jpg" convert -resize 1024x768
$i "resized-1024x768/$FileName_Stripped-1024x768.jpg" fi

if [ ! -e "resized-256x192/$FileName_Stripped-256x192.jpg" ] then
echo "Converting $i to $FileName_Stripped-256x192.jpg" convert -resize 256x192
$i "resized-256x192/$FileName_Stripped-256x192.jpg" fi
done

echo "Done"

-----------------------------

Thank you very much for pointing this tool to me. However ...
I can't find in imagemagick the ability to save thumbnail as EXIF data in the jpeg, and not in a different picture.

Guillaume Bonillo a écrit :

Paul Surgeon a écrit :

On Monday 07 May 2007 11:37, Guillaume Bonillo wrote:

Hi,

I am new to scheme scripting. What i want to do is open pictures from a directory and apply a very simple macro.

I can do it manually with the following steps : - open image "the_image.jpg".
- save as .... the_image_with_thumbnail.jpg - choose options : q = 0.85 , progressive, and default other options. - check the option : save thumbnail. - Click OK.
- close image.

Using a bash script or DOS batch file with imagemagick is a better and easier solution.

Below is a bash script that I use to create thumbnails of photos from my digital camera.
You can pass the jpg quality parameter to convert - I used the default which is 75% I think. The options are in the docs.

-----------------------------

#!/bin/bash

echo "Converting ..."

if [ ! -d "resized-1024x768" ] then
mkdir resized-1024x768
fi

if [ ! -d "resized-256x192" ] then
mkdir resized-256x192
fi

# Loop through all jpg files in current folder # ============================================ for i in *.jpg
do
FileName_Stripped=`echo $i | cut -d. -f1`

if [ ! -e "resized-1024x768/$FileName_Stripped-1024x768.jpg" ] then
echo "Converting $i to $FileName_Stripped-1024x768.jpg" convert -resize 1024x768
$i "resized-1024x768/$FileName_Stripped-1024x768.jpg" fi

if [ ! -e "resized-256x192/$FileName_Stripped-256x192.jpg" ] then
echo "Converting $i to $FileName_Stripped-256x192.jpg" convert -resize 256x192
$i "resized-256x192/$FileName_Stripped-256x192.jpg" fi
done

echo "Done"

-----------------------------

Thank you very much for pointing this tool to me. However ...
I can't find in imagemagick the ability to save thumbnail as EXIF data in the jpeg, and not in a different picture.

Ok, so if someone want to write Exif thumbnail to jpeg i've done this with imagemagik and exiftools to write thumbnail generated by imagemagik... Maybe there's a better way to do this but this tools works just as expected and there's no loss of other exif info.

But if someone ever got a scheme script to do that through GIMP ... i'am interested

Thanks list !