Extract tables from scanned image PDFs using Optical Character Recognition.

Abhijeet Singh

Last update: Dec 6, 2022

Overview

ocr-table

This project aims to extract tables from scanned image PDFs using Optical Character Recognition.

Install Requirements

Tesseract OCR
```
sudo apt-get install tesseract-ocr
```
Imagemagick
```
sudo apt-get install imagemagick
```
PDF Utilities
```
sudo apt-get install poppler-utils
```
Python packages
```
sudo pip install -r requirements.txt
```

Usage

Clear the pdf/ folder and copy all your pdf files to be scanned in it.
Run the OCR:
```
python3 shellocr.py
```
The scanned text files shall be available in the txt/ folder once the process completes.

Alternate

If the above doesn't work for you, try the alternate method.
Save your file as input.pdf in the root directory.
Run
```
python3 pdf_miner.py 
```

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Comments

cannot remove './temp.tiff': No such file or directory

Hello,

I'm running to the following issue when trying to load my own file:

$ pipenv run python3 shellocr.py
Attempting pdftotext extraction...extracted 0 words.
Attempting OCR extraction...rm: cannot remove './temp.tiff': No such file or directory
extracted 0 words.

Additionally, trying to parse the same file with pdfminer returns the following:

$ python3 pdf_miner.py
b'\x0c'

opened by zexa 2

ModuleNotFoundError: No module named 'chardet'

Traceback (most recent call last):
  File "pdf_miner.py", line 8, in <module>
    from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
  File "/anonymized/ocr-table/venv3/lib/python3.7/site-packages/pdfminer/pdfinterp.py", line 5, in <module>
    from .cmapdb import CMapDB
  File "/anonymized/ocr-table/venv3/lib/python3.7/site-packages/pdfminer/cmapdb.py", line 24, in <module>
    from .psparser import PSStackParser
  File "/anonymized/ocr-table/venv3/lib/python3.7/site-packages/pdfminer/psparser.py", line 11, in <module>
    from .utils import choplist
  File "/anonymized/ocr-table/venv3/lib/python3.7/site-packages/pdfminer/utils.py", line 13, in <module>
    import chardet  # For str encoding detection in Py3
ModuleNotFoundError: No module named 'chardet'

opened by souravbadami 1

Extracting table data?

Right now, it only seems to perform OCR. i.e., convert image to raw text. Is there any table-specific extraction performed? Basically, I'm researching about good algorithms to extract tabular data from scanned documents.

Thanks in advance. :)
enhancement help wanted

opened by munikarmanish 5

Owner

Abhijeet Singh

Mozilla Rep | Software Engineer

GitHub

Extract tables from scanned image PDFs using Optical Character Recognition.

Related tags

Overview

ocr-table

Install Requirements

Usage

Alternate

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Comments

cannot remove './temp.tiff': No such file or directory

ModuleNotFoundError: No module named 'chardet'

Extracting table data?

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