Index data from SharePoint document libraries => Visioning / Image Analysis

Hi,

I`m currently testing the indexing of SharePoint data according to the following instructions https://learn.microsoft.com/en-us/azure/search/search-how-to-index-sharepoint-online

So far, so good. 
My question: Visioning on images is not enabled.
Besides the Microsoft links, I found 2-3 other good links for the SharePoint indexer, but unfortunately none for Visioning / Image Analysis.

Does anyone here have this working? Any tips or links on how to implement it?

Many thanks