I use VNRecognizeTextRequest to recognise a series of letters drawn by hand in the app.
When I draw a few letters, it usually works fine.
is recognised as "LV"
But if I draw a single letter:
or
in most cases, I get zero observation, even using recognitionLevel3.
But this was recognized as "V":
It is apparently not a question of how well drawn letters, as even this was recognised as "LI":
However, this one was not
I have even tried to add custom words, to no avail: request.customWords = ["I", "V", "L"]
General observation is that single letters are rarely or never recognised, dual letters may be recognised ; 3 letters are systematically recognised.
But, I have now increased the brushWidth, and it works much better, even with single letter:
What tuning of VNRecognizeTextRequest do I miss ?
