tesseract and pytesseract unable to detect numbers on web images

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samuele tonon

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Dec 2, 2024, 10:02:58 AM12/2/24

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Hello,

i am trying to detect digits from some images that are made out from screenshot of a web application. Since numbers are clear i was expecting to see a correct reading but that is not the case.

Images are taken from 2048 the game, i take the grid, convert to dark background and white text.

$ tesseract pil_check_1733137499.png stdout -c preserve_interword_spaces=1 -l snum --psm 6 digits

gives no output.

$ tesseract pil_check_1733137501.png stdout -c preserve_interword_spaces=1 -l snum --psm 6 digits

gives no output.

$ tesseract pil_check_1733137511.png stdout -c preserve_interword_spaces=1 -l snum --psm 6 digits

gives:

8 2

2 2 2 16

32 4 2

in this case output is good, I am missing the first line but that is something i can live with. however I don't know how to further improve and any help would be appreciated.

pil_check_1733137499.png

pil_check_1733137501.png

pil_check_1733137511.png

Ger Hobbelt

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Dec 2, 2024, 2:48:11 PM12/2/24

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Please try again after inverting the images, i.e. black text on white background.