OH3: Storing Images with jdbc persistence + MySQL

Thanks for your feedback.
After looking at https://community.openhab.org/t/oh3-issue-jdbc-mysql-table-creation-for-image-item/ I was under the impression that OH stores also the pictures itself and not only a representation.
If that is the case how to restore images for i.e. habpanel after a restart of openhab then? I find it odd that you have to fiddle with saving and restoring yourself.
DoorBird cloud is no option for me, I don’t want to store personal data there.