On one of the latest Sony cameras, I switched on a feature that imprints the date the photograph was taken, onto the bottom right corner of the photo.
I was shocked at the result.
Sony's software puts a fat orange date stamp on the photo without even antialiasing it. Looks like we've been transported to the 1970's.
Searching for a better alternative led me to a script written by Terdon that makes use of imagemagick to extract exif information from the picture.
See the difference between Sony's orange date stamp and imagemagick's white one.
Here's what to do at your bash terminal:
#!/usr/bin/env bash
## This command will find all image files, if you are using other
## extensions, you can add them: -o "*.foo"
find . -iname "*.jpg" -o -iname "*.jpeg" -o -iname "*.tif" -o \
-iname "*.tiff" -o -iname "*.png" |
## Go through the results, saving each as $img
while IFS= read -r img; do
## Find will return full paths, so an image in the current
## directory will be ./foo.jpg and the first dot screws up
## bash's pattern matching. Use basename and dirname to extract
## the needed information.
name=$(basename "$img")
path=$(dirname "$img")
ext="${name/#*./}";
## Check whether this file has exif data
if exiv2 "$img" 2>&1 | grep timestamp >/dev/null
## If it does, read it and add the water mark
then
echo "Processing $img...";
convert "$img" -gravity SouthEast -pointsize 22 -fill white \
-annotate +30+30 %[exif:DateTimeOriginal] \
"$path"/"${name/%.*/.time.$ext}";
## If the image has no exif data, use the creation date of the
## file. CAREFUL: this is the date on which this particular file
## was created and it will often not be the same as the date the
## photo was taken. This is probably not the desired behaviour so
## I have commented it out. To activate, just remove the # from
## the beginning of each line.
# else
# date=$(stat "$img" | grep Modify | cut -d ' ' -f 2,3 | cut -d ':' -f1,2)
# convert "$img" -gravity SouthEast -pointsize 22 -fill white \
# -annotate +30+30 "$date" \
# "$path"/"${name/%.*/.time.$ext}";
fi
done
Change the file to an executable and run it:
Run it in the folder where your images are placed.
Works like a charm!
I was shocked at the result.
Sony's software puts a fat orange date stamp on the photo without even antialiasing it. Looks like we've been transported to the 1970's.
Searching for a better alternative led me to a script written by Terdon that makes use of imagemagick to extract exif information from the picture.
- You can run it via the linux commandline
- It's fast
- Doesn't mess up your existing image and
- Is also configurable
See the difference between Sony's orange date stamp and imagemagick's white one.
Here's what to do at your bash terminal:
sudo apt-get install imagemagick
sudo apt-get install exiv2
Then put this script in a file named watermark.sh:#!/usr/bin/env bash
## This command will find all image files, if you are using other
## extensions, you can add them: -o "*.foo"
find . -iname "*.jpg" -o -iname "*.jpeg" -o -iname "*.tif" -o \
-iname "*.tiff" -o -iname "*.png" |
## Go through the results, saving each as $img
while IFS= read -r img; do
## Find will return full paths, so an image in the current
## directory will be ./foo.jpg and the first dot screws up
## bash's pattern matching. Use basename and dirname to extract
## the needed information.
name=$(basename "$img")
path=$(dirname "$img")
ext="${name/#*./}";
## Check whether this file has exif data
if exiv2 "$img" 2>&1 | grep timestamp >/dev/null
## If it does, read it and add the water mark
then
echo "Processing $img...";
convert "$img" -gravity SouthEast -pointsize 22 -fill white \
-annotate +30+30 %[exif:DateTimeOriginal] \
"$path"/"${name/%.*/.time.$ext}";
## If the image has no exif data, use the creation date of the
## file. CAREFUL: this is the date on which this particular file
## was created and it will often not be the same as the date the
## photo was taken. This is probably not the desired behaviour so
## I have commented it out. To activate, just remove the # from
## the beginning of each line.
# else
# date=$(stat "$img" | grep Modify | cut -d ' ' -f 2,3 | cut -d ':' -f1,2)
# convert "$img" -gravity SouthEast -pointsize 22 -fill white \
# -annotate +30+30 "$date" \
# "$path"/"${name/%.*/.time.$ext}";
fi
done
Change the file to an executable and run it:
chmod +x watermark.sh
./watermark.sh
Run it in the folder where your images are placed.
Works like a charm!
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