Tesseract on single digit detection

[Fernando Benayas de los Santos]

Hi guys/gals!

Long story short: I'm trying to use tesseract to extract a single digit from a small image (containing a single digit) but I can't get over ~50% accuracy.

I have attached some examples of images. It should be pretty easy to extract the digit.

So far, the best approach consists in using --psm 13 and zoom a bit to get the frame out. Tried to change the image to black/white, but it didn't solve much :(

Any ideas? (I'm playing around with obscure -c options but they don't seem to have any effect)

[Zdenko Podobny]

Crop images properly (without borders) and follow suggestions in docs:

>tesseract pic2_cropped_postprocessed.png - --psm 10
5

>tesseract pic4_cropped_postprocessed.png - --psm 10
7

Zdenko

po 27. 11. 2023 o 9:42 Fernando Benayas de los Santos <ferben...@gmail.com> napísal(a):

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