I took the idea here and programmed an app for the iPad:
You need a lens (“Iboolo phone lens 90 degree square angle periscope lens for smartphone”) and also a good stand - and an iPad.
The detection shown in the video, and also the algorithms to increase the image quality are not trivial, but far from perfect. If there is enough interest, I would be happy to finalize the app and try to release it in the App Store, respectively provide a test version first.
Feedback is welcome!