Overlaying an image's filename using ImageMagick (or similar) - image-processing

Question

I know ImageMagick's annotate command can superimpose some text over an image, but can it use the image's filename as this text? I would've assumed so, but can't seem to find direct documentation that confirms this.
No doubt some combination of parameters can manage this, or is there a better way of doing this in a script?

Answer 1

Eric L.'s answer is correct -- +1 from me for it! -- but -annotate doesn't give you much control over the appearance of the text.
If you look for prettyness, then rather go for something that uses -composite. You can use an IM command to construct an overlay image first (which uses a semi-transparent background) and then overlay it over the original image.
Here is an example how to do it with -composite instead of -annotate, using a scripted approach that processes every PNG file in the current directory. This one even automatically adapts the font size and fits it into the available "width * 90%" -- it is a Bash script (see comments for Win equivalent):
for img in *.png; do
width=$(identify -format %W ${img})
width=$(( ${width} * 9 / 10 ))
convert \
-background '#0008' \
-gravity center \
-fill white \
-size ${width}x100 \
caption:"${img}" \
"${img}" \
+swap \
-gravity south \
-composite \
"with-caption-${img}"
done
An example illustration for one original and the respective output are below:
!
Here is a command that uses -annotate, trying to set a few things beyond the default parameters:
for img in so#12231624-right.png; do
convert \
"${img}" \
-fill red \
-undercolor '#0008' \
-pointsize 24 \
-gravity south \
-annotate +0+5 "${img}" \
"with-annotate-${img}"
done

Answer 2

It's a very old entry but I find it each time I search for this topic, and it doesn't work (for me at least). Here something that works for me:
convert input.jpg -gravity South -annotate 0 '%f' output.jpg
Hope this helps someone...

Answer 3

You can also use mogrify to add text to bunch of images at once.
mogrify -gravity South -annotate 0 '%f' -pointsize 24 -fill white *.png
This will overwrite existing images, so make sure you have a backup before you execute this.

Answer 4

Building on Steve Czetty's solution, it looks like you can set the text size and color of the annotation, using -pointsize and -fill, respectively.
Here's an example:
convert input.jpg -gravity south -pointsize 24 -fill yellow -annotate 0 '%f' output.jpg
Obviously, you can change the text size from 24 points to something else, as well the color, from 'yellow' to some other color, as per your preference.