problem detected using tesseract4 & arabic data

[El Fakir Zakaria]

I noticed that tesseract4 reads الأ as األ which is pretty close, because we need to switch the position of the last 2 letters to have ا ل أ, this happens with similar word forms too like لا reads as ال and should be ل ا, and i wish to correct it.

can someone show me how to fix this, or maybe update arabic data.

thank you for your time.

[Ray Smith]

Thanks for spotting this!

I understand why it makes this error, but it will take some thought to fix it properly!

It is using a sort by x-position to re-order the boxes for RTL language training, but that doesn't work in the case of heavily kerned characters like ل in your example.

It needs to simply reverse the RTL characters, but has to avoid messing up the order of the common script, which is why I was using a sort to begin with.

https://github.com/tesseract-ocr/tesseract/blob/master/training/boxchar.cpp#L202

[El Fakir Zakaria]

thank you for your concern over this matter, your work is really important and much appreciated.

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