A sentence that makes no sense
I assume this is an extension that can take images from MediaWiki (Wikimedia Commons?) and send them to a machine vision service. The machine vision service returns some information about the image (possibly things such as "depicts a domesticated cat, blue sky" or "a domesticated cat playing on a field") and this extensions stores this information in MediaWiki database. It probably also hooks into image pages/search to display this information and/or provides APIs through which this information can be accessed.