Earlier quoted context omitted.
The pictures would have to be extremely large for that to be useful, or each item very distinctive, since otherwise a lot of food tends to look like "blob of stuff on a dish". I think listing the ingredients would be far more helpful to understand what you're getting. ...and the obligatory "items may not be exactly as shown" disclaimer would make pictures not reliable for portion sizes either.
Everyone has phones now. Ideally the menu would have a QR code that pops open the menu in your browser. All the items could be hyperlinks that show those huge pictures. That would be lovely.
We just need to gather as many menus as possible from all over the world. Currently Spain -Barcelona focused so far.