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I use Lightroom for my workflow, and I tag photos with people's names so that I can find them faster.

Since Lightroom doesn't have the "Faces" feature, I want to use Picasa's People feature for this purpose, but I don't want to work constantly with both of them. I'd rather use Picasa to tag the photos with the name tags every time I import new photos, and come back to Lightroom for the rest.

I couldn't find a way to make Picasa actually "tag" the photos (in the EXIF) with the people's names. Is there any plugin / script / ... that can make this happen?

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Photook can also help on this. –  user1444658 Jun 28 '12 at 1:22

3 Answers 3

up vote 16 down vote accepted

Picasa stores faces information in the .picasa.ini files:

[test.jpg]
faces=rect64(1eb1929f885e),15441a598f9f1866
backuphash=29866

The id numbers can be found in the contacts.xml file which stores all the contacts of your pictures:

<contact id="15441a598f9f1866" 
  name="Test Test" 
  display="Test" 
  modified_time="2010-05-13T17:19:46+01:00" 
  sync_enabled="0"/>

Several programs can read these files and modify the EXIF accordingly. For instance:

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Thanks, this is exactly what I was looking for. I was planning to write a program to do this myself, if I couldn't find anything, and I was just searching for an EXIF library. –  Iravanchi Jan 7 '11 at 9:04

Use this link for exactly what you want: Add face recognition to lightroom with picasa

Picasa can save metadata to files, and Lightroom can read them.

But be careful to follow the guide. In Picasa its not enough to get peoples names associated to a photo. You have to tag the photo as well to have the data stored in the file. And in Lightroom you have to select the photos afterwards, and then click Read Metadata from files.

AND the most annoying part is it only works with jpg. I havent been able to make it work in dng..

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Expanding upon your last sentence: be sure to read the comments before considering this a viable option. Caveats abound. –  Dan Wolfgang Jun 4 '12 at 20:36

Lightroom does have a "people in photo" metadata option, although you have to change to show the 'ITPC Extended' option for it to show.

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