OCR on cyrillic text

[Blightbuster]

Summary of your issue

Using OCR on cyrillic text yields a empty string even with correct model and white list

Environment

OpenCVSharp 4.5.3.20211228

What did you do when you faced the problem?

• Verified that it works with english model on latin characters
• Tested the image from the example below in the console with the same model and got this result:
  "Дульный тормоз-компенсатор Зенит "ДТК-1" 762х39 и 5.45х59 для АК"
  

Example code:

var whiteList = "АаБбВвГгДдЕеЁёЖжЗзИиЙйКкЛлМмНнОоПпРрСсТтУуФфХхЦцЧчШшЩщЪъЫыЬьЭэЮюЯя";
var model = OCRTesseract.Create("models", "rus", whiteList, 3, 7);
string text = "";
model.Run(img, out text, out _, out _, out _, ComponentLevels.TextLine);
if (text == "") Console.WriteLine("Empty");

[Blightbuster]

Could this perhaps be an issue with how the wrapper handles the conversion of string encodings? (wild guess)

[Blightbuster]

I also tried using the characters as in the desired_characters file.
0123456789ЁАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюяё
Unfortunately with the same result...

[Blightbuster]

Perhaps related to this:
https://stackoverflow.com/a/9983550

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Blightbuster]

To circumvent this issue, the tesseract package on nuget can be used as it does not have this issue.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[n0099]

#873 (comment)