Reset face recognition for 2 specific faces
Hi,
I have 2 very similar faces that are both detected as the same person.
I would like to completely reset the face recognition data for that specific person and then re-tag them in the photos.
However, since I have already tagged over 350,000 faces, I don’t want to reset all the settings and start everything from scratch.
Is there a way to do this?
Thank you very much.
2 Replies
:wave: Hey @Dan2019,
Thanks for reaching out to us. Please carefully read this message and follow the recommended actions. This will help us be more effective in our support effort and leave more time for building Immich :immich:.
References
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Successfully submitted, a tag has been added to inform contributors. :white_check_mark:So GPT helped me, it works great!
solution:
⚠️ Warnings Before You Start
Direct action on the database = any mistake can delete more than you intended.
You must take a full backup before deleting anything.
This action deletes the person and all its relations → the photos return to “Unassigned” and you can re-tag them.
Step 1 — Backup the Database
On your server (inside the postgres container):
docker exec -t immich_postgres pg_dump -U immich -d immich > immichbackup$(date +%F).sql
This will create a .sql file containing all data. Keep it safe.
Step 2 — Enter psql
docker exec -it immich_postgres psql -U immich -d immich
Step 3 — Find the Person
Inside psql run:
-- Show all people (short list with id and name)
SELECT id, name FROM person ORDER BY name;
Note down the id of the person you want to delete (e.g. 123e4567-e89b-12d3-a456-426614174000).
Step 4 — Delete the Person
DELETE FROM person WHERE id = '123e4567-e89b-12d3-a456-426614174000';
This also deletes relationships in other tables thanks to cascading foreign keys.
Step 5 — Exit
\q
Step 6 — Re-run Face Recognition
Admin UI → Jobs → “Face Recognition” → Run.