How to read EXIF data?

[MacsandaPi]

The blog announcing Pixel (https://www.raspberrypi.org/blog/introducing-pixel/) mentions that the EXIF data of the new wallpaper photos would tell where the photos were taken. So, how does one read the EXIF data?

Google led me to try "imagemagick," but sudo apt-get install puts two copies of the app in the Graphics menu on my RPi B+, but neither one will launch.

Is this the recommended app for reading EXIF data on the Pi? Help would be appreciated. Thanks.

[scruss]

try either jhead or exiftool

[DougieLawson]

Code: Select all

from PIL import Image
from PIL.ExifTags import TAGS
img = Image.open('cam.jpg')
exif_data = img._getexif()
for tag, value in exif_data.items():
  print TAGS.get(tag, tag), value

[scruss]

I did this with exiftool: Greg Annandale's photo locations for Raspberry Pi Foundation's PIXEL wallpaper. The images are a bit hard to identify from it, but they are there.

If you're a Google Earth user (I don't think there's a version for Raspberry Pi) you can use this KML: Greg Annandale's photo locations for Raspberry Pi Foundation's PIXEL wallpaper KML.

[MacsandaPi]

Code: Select all

from PIL import Image
from PIL.ExifTags import TAGS
img = Image.open('cam.jpg')
exif_data = img._getexif()
for tag, value in exif_data.items():
  print TAGS.get(tag, tag), value

Thanks for your reply, Dougie. I need to work with the code some more; I get a syntax error at "print TAGS."

[MacsandaPi]

[quote="scruss"]I did this with exiftool: Greg Annandale's photo locations for Raspberry Pi Foundation's PIXEL wallpaper. The images are a bit hard to identify from it, but they are there.

Thanks for this; you've done the work for me! I installed exiftool and found it worked well. Before looking at the EXIF data, I just assumed that the locations would be identified in text and not by coordinates. Always learning new stuff with the RPi. Thanks again.

[DougieLawson]

Thanks for your reply, Dougie. I need to work with the code some more; I get a syntax error at "print TAGS."

It's python2 not python3.

[rpdom]

Thanks for your reply, Dougie. I need to work with the code some more; I get a syntax error at "print TAGS."

It's python2 not python3.

Why are you still using Python 2? Pretty much everything Pi related is Python 3 now.

[DougieLawson]

Thanks for your reply, Dougie. I need to work with the code some more; I get a syntax error at "print TAGS."

It's python2 not python3.

Why are you still using Python 2? Pretty much everything Pi related is Python 3 now.

Because I couldn't be ***sed to fix that small simple sample.

[scruss]

I just assumed that the locations would be identified in text and not by coordinates

For that you need a reverse geocoder, such as OpenStreetMap's Nominatim. That might be a more fun programming project, as you have to decide what to do if you get zero results back, or which to choose if you get many results back. It's also quite a small server, so you have to be careful with hitting it with too many requests.