feat(ocr): added support for PaddleOCR engine

[Swaymaw]

• Added PaddleOCR Model as an OCR engine option.
• Added Options for configuring PaddleOCR model during document conversion using pipeline options.
• Updates documentation, added tests and updated dependencies(extras) to reflect the added engine support.
• Updated examples to demonstrate the use of PaddleOcrOptions.

This change allows users to seamlessly work with PaddleOCR engine which provides higher accuracy and performance in use-cases which require working with complex PDF files.

Checklist:

• Commit Message Formatting: Commit titles and messages follow guidelines in the
  conventional commits.
• Documentation has been updated, if necessary.
• Examples have been added, if necessary.
• Tests have been added, if necessary.

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[dolfim-ibm]

For adding extras, these should also be in the main dependencies, with the optional=true flag

[Swaymaw]

Hey, I am getting this numpy version issue however, in my environment I have:

• numpy == 1.26.4
• deepsearch-glm == 0.26.1
• paddlepaddle == 2.6.2
• paddleocr == 2.9.1

the library seems to be working fine, all the tests are getting passed as well. Can you please help me in resolving this?

[dolfim-ibm]

• which python version?
• can you please try to rebase with the latest main branch? we just merged something about numpy conflicts as well

[Swaymaw]

These are the lines I added in pyproject.toml to add the necessary libraries for paddle_ocr:

This is the error I am getting:

I have rebased with the latest main branch however i am still facing the numpy version conflict between paddleocr and deepsearch-glm. For now, I have removed paddlepaddle and paddleocr from the requirement and the extras in pyproject.toml as a simple workaround for now can be to manually install these libraries whenever someone wants to use PaddleOCR engine. We have instructions for the same in installation.md and if someone tries to use it we throw an import error with the instructions to install the library as well.

[Glider95]

Hello,

Does a RapidOCR implementation could be possible too? (Wrapper of PaddleOCR, a lot easier to install) !

[PeterStaar-IBM]

Hello,

Does a RapidOCR implementation could be possible too? (Wrapper of PaddleOCR, a lot easier to install) !

What is the added delta with RapidOCR compared to PaddleOCR?

[Swaymaw]

Hello,
Does a RapidOCR implementation could be possible too? (Wrapper of PaddleOCR, a lot easier to install) !

What is the added delta with RapidOCR compared to PaddleOCR?

It is just the poetry.lock file nothing much has changed code-wise.

[dolfim-ibm]

@Swaymaw we will check if adding the packages as extras work for us. Meanwhile, can you please make sure to add those manual dependencies in the CI tests?

[ezscode]

Hope this merge successfully !

[dolfim-ibm]

Hope this merge successfully !

@ezscode I think this PR will be superseded by #415

[Swaymaw]

@dolfim-ibm Should I close this pull request to avoid any confusion?

[dolfim-ibm]

@dolfim-ibm Should I close this pull request to avoid any confusion?

@Swaymaw yes, I'm closing as discussed in #415 .