Lightroom Classic: Share facial recognition results with team

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In Lightroom Classic there's an option to identify people in a picture using the facial recognition tool. What I would like to achieve is that I can share the results of this between team members. If someone identifies people in a picture (on a shared drive) there should not be a need for another team member to do the same.

Is there a way to work together as a team, sharing results and more importantly not loosing any data if someone leaves the team?
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Willem-Frederik van der Heijden

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Posted 3 months ago

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Victoria Bampton - Lightroom Queen, Champion

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You'd need access to the same catalog, and the simplest way to do that is to put the catalog on an external drive and plug it into the computer you're using at the time. 
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Willem-Frederik van der Heijden

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Thank you, from what I understand from your comment the ‘Name tag’ is part of a catalog. Does that imply that when I create a new catalog, I will have to label people that are already labelled in another catalog?

As I have the pictures on a shared location in our company network, I assume I can place the catalog in the same location and work from there. Or does your solution include an import / export process?

We have to go through 20k pictures / 40GB so my main interest is a stable solution and preferably to be able to work simultaneously.
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John R. Ellis, Champion

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Unfortunately, LR doesn't allow for a good solution here -- it's not designed for multiple people to modify a shared catalog.  In particular, LR isn't able to access a catalog on a network drive.  

So Victoria's suggestion of using an external drive containing the catalog that you pass around to whomever is currently naming people.  (The photos can reside on a network drive, as long as it has the same name / drive letter on all the computers accessing the catalog.)

An alternative, very fragile solution: You could keep the photos on a network drive but create a separate catalog on each person's computer, with all the photos imported into each catalog. Details:

1. Each user would need to periodically do Synchronize Folder on the root network folder containing all the photos to make sure she has all the recently added photos in her catalog.

2. Each catalog would have enabled Catalog Settings > Metadata > Automatically Write Changes Into XMP, so that changes to the face naming in that catalog get written back to the photos' metadata near instantaneously.

3. Periodically, each user would use the Metadata Status column of the Library Filter bar to find all photos whose metadata is Changed On Disk, indicating that someone else on another computer has changed the face naming in that photo.  She would select all these photos and do Metadata > Read Metadata From File to get those changes into her catalog.

4. You establish some sort of workflow convention to ensure that two users don't try to modify the same photo.  E.g. user A gets all photos with odd filename numbers and user B gets the even filename numbers.

5. If (or rather, when) two users do accidentally modify a photo at about the same time, the metadata status in the Library Filter bar will show Conflict Detected, meaning that the face names stored in the photo on disk are different from what's in the catalog. At that point, one user has to do Metadata > Save Metadata To File, losing all the changes made by the other user.
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Willem-Frederik van der Heijden

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Thank you John

Decided to give this solution a try and we're doing some testing with a small set of pictures.