feat(model inference): add table recognition and conversion to LaTeX

[papayalove]

What's Changed

New Features

• Add table content recognition, we use weights of StructEqTable to convert table images to LaTex.

Instruction

• pip install pypandoc struct-eqtable==0.1.0
• Download StructEqTable weights and put it under 'models/' directory.
• Edit the 'table-mode' value to turn on the table recognition function which is turned off by default.
• If you did not download any models before, refer to how to download models。

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