I have "Face grouping" enabled in my Google account and I can see around 10 faces successfully tagged when I go to my Albums. However, there's a lot of other people who are not tagged, as well as some unrecognized photos of people who are already tagged.

Is there a way to force Google Photos to run the facial recognition algorithm on a given photo, so that it adds new faces or maps a new photo to an existing face?


Unfortunately, there is no such option in Google Photos that would allow enabling/running additional face recognition on chosen images. You should also note that this is just a mare residue of an experimental feature of already discontinued Google +.


After waiting for a couple of weeks, the last ~two years worth of photos were analyzed correctly and new faces have been added to the library. However photos taken since before 2017 have not been autoprocessed after one month of waiting. Therefore I've had to trick Google Photos to think that I've uploaded new pics:

  1. Sync your photo folder from Google Drive to your local machine
  2. Move the photos from the Google Drive folder to another folder and wait for Drive to sync
  3. Move the photos back and wait for Drive to re-uploaded them back to the cloud

A few minutes after re-uploading the photos they should be correctly mapped to your faces library. After a couple of weeks Google Photos will parse any new people and add them to your faces library as well.

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