How can I recognize text with little math symbols by tesseract OCR?

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My text with some not such complex math symbols as below.

enter image description here

enter image description here

Tesseract OCR default cannot recognize such math symbols (+-, angle). How can I recognize such math symbols by tesseract ?

tesseract image-recognition ocr
1 Answers

just use the following statement:

pytesseract.image_to_string(Image.open(img), config='-l eng + equ')

Also make sure pytesseract is trained with equations.

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