That's a follow up of a previous thread.
https://developer.apple.com/forums/thread/707130
I did some test on iOS 16 simulator with Xcode 14ß.
Recognition is very poor. And recognition rate of some single letters (an L or an I for instance) is zero (literally). Same code worked better (success 50% for same single letters) with iOS 15.2.
Did something change on iOS 16 ? I filed a bug report: Jun 7, 2022 at 3:28 PM – FB10066541
I got rapidly an answer from support (thanks):
iOS 16 introduced a new revision of VNRecognizeTextRequest (VNRecognizeTextRequestRevision3). By default, the revision used is determined by the SDK that was linked with the app. You can check the default revision using the defaultRevision property of VNRecognizeTextRequest to verify. So, assuming that you rebuilt your app with the Xcode 14 beta, it is likely that you are now seeing Revision3 results, whereas previously you were likely seeing Revision2 results.
So I changed with: request.revision = 2
And success rate improved significantly.
I got rapidly an answer from support (thanks):
iOS 16 introduced a new revision of VNRecognizeTextRequest (VNRecognizeTextRequestRevision3). By default, the revision used is determined by the SDK that was linked with the app. You can check the default revision using the defaultRevision property of VNRecognizeTextRequest to verify. So, assuming that you rebuilt your app with the Xcode 14 beta, it is likely that you are now seeing Revision3 results, whereas previously you were likely seeing Revision2 results.
So I changed with: request.revision = 2
And success rate improved significantly.
