Getting alternative options for OCR results

[Daniel Rembiszewski]

Hey,

I have a use-case where I have a way to detect when a specific word is definitely wrong (can't appear in specific contexts). Mostly useful for numbers, where 8 and 0 are often confused.

I would like to display the next best option given by tesseract in this case.

Is there a way to get a descending list of top X options, with their confidences, using the programmatic API?

[Zdenko Podobny]

Did you try have a look at https://github.com/tesseract-ocr/tesseract/wiki/APIExample#example-of-iterator-over-the-classifier-choices-for-a-single-symbol?

PS: I am not sure how it works with 4.00, but it in 3.0x era it provided alternative option for symbols...

Zdenko

st 2. 1. 2019 o 7:56 Daniel Rembiszewski <gilt...@gmail.com> napísal(a):

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[Daniel Rembiszewski]

I'm using the pytesseract wrapper, which I believe wraps over the CLI.

So I guess a better question is can I get these options via the binary?

[Zdenko Podobny]

it is not available from binary.

Maybe you can try to use C-API from python: https://github.com/tesseract-ocr/tesseract/wiki/APIExample#c-api-in-python

Zdenko

st 2. 1. 2019 o 17:35 Daniel Rembiszewski <gilt...@gmail.com> napísal(a):

To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/d2654e47-877c-40c2-b77f-9439f72cb617%40googlegroups.com.

[Lorenzo Bolzani]

I use a python wrapper and I can ask for alternatives chars but with 4.x I always get just one. With 3.x I used to get multiple ones.

As far as I know right now 4.x does not provide this feature.

Lorenzo

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