[SOLVED] Finding images based on their dimensions

Huwie · 11-05-2010, 12:42 PM

Hi everyone

I'm not afraid of bash but I'm not very good with it either. I'm assuming there's a way of using find, perhaps in conjunction with another tool, to find images in a directory (and subdirectories) based on their dimensions?

Specifically, I want to find all the landscape-oriented images and copy them somewhere else.

Thanks in advance for any help.

GrapefruiTgirl · 11-05-2010, 01:08 PM

Code:

find . -name "*.jpg" | while read picture; do
     xdim=$(identify "$picture" | awk '{print $3}' | awk -Fx '{print $1}')
     ydim=$(identify "$picture" | awk '{print $3}' | awk -Fx '{print $2}')
     [ $xdim -gt $ydim ] && cp "$picture" "/path/to/destination/directory"
done

The above is just a modified version of some code I posted over here in post #7:
http://www.linuxquestions.org/questi...s-pngs-796781/

I adjusted it to simply compare the X dimension of the image with the Y dimension; if X is larger, copy the image somewhere else. You'd need to put the right path to your target directory, and adjust the -name parameter to the `find` command to search for the filename pattern you desire.
I haven't tested it so maybe try it on a test directory first, though it won't delete anything by accident even if it doesn't work as expected.
You'll need ImageMagick tools installed to have the `identify` command.

Good luck!

Huwie · 11-05-2010, 01:13 PM

Thank you very much for your reply, Celine! I'm very grateful for your help. I don't know what most of that code means so I'll do some reading up on it, and I'll let you know if it works.

GrapefruiTgirl · 11-05-2010, 01:16 PM

No problem - any questions, just ask and I or someone will try to answer. The only man pages you need to reference (besides Bash itself) are for the `find` command, as well as `awk` and `identify`. The awk commands just return the desired column (field) of each input, so to see the effect of this, try in a console, using the `identify` command by itself on a picture; then, try it but pipe it into some awk and see what comes out. You should then understand about the fields.
EDIT: Oh, and there's the `cp` command of course, so if you want to use a different `cp` syntax, check the `cp` manpage too.

Anyhow, any questions, feel free to ask.

Cheers!

Huwie · 11-06-2010, 03:03 AM

Yep, it works like a charm. Thanks so much Celine, you've saved me a lot of laborious work!