Can it detect and classify near duplicates?
I always wanted to build something similar but only to detect similar photos and remove duplicates, as multiple backups and groupings is not manageable without a cloud service having a blind trust. Imagine I have 4-5 albums of 20 year old events and don't know which one was original vs color-corrected.
It doesn't specifically detect duplicates, but it's something I've considered adding. Would have to think through how to implement it, but seems doable.