Convert scanned pdf to text python
Convert pdfs, using pytesseract to do the OCR, and export each page in the pdfs to a text file.
Install these....
conda install -c conda-forge pytesseract
conda install -c conda-forge tesseract
pip install pdf2image
import pytesseract
from pdf2image import convert_from_path
import glob
pdfs = glob.glob(r"yourPath\*.pdf")
for pdf_path in pdfs:
pages = convert_from_path(pdf_path, 500)
for pageNum,imgBlob in enumerate(pages):
text = pytesseract.image_to_string(imgBlob,lang='eng')
with open(f'{pdf_path[:-4]}_page{pageNum}.txt', 'w') as the_file:
the_file.write(text)
Take a look at this library: https://pypi.python.org/pypi/pypdfocr but a PDF file can have also images in it. You may be able to analyse the page content streams. Some scanners break up the single scanned page into images, so you won't get the text with ghostscript.
Take a look at my code it is worked for me.
import os
import io
from PIL import Image
import pytesseract
from wand.image import Image as wi
import gc
pdf=wi(filename=pdf_path,resolution=300)
pdfImg=pdf.convert('jpeg')
imgBlobs=[]
extracted_text=[]
def Get_text_from_image(pdf_path):
pdf=wi(filename=pdf_path,resolution=300)
pdfImg=pdf.convert('jpeg')
imgBlobs=[]
extracted_text=[]
for img in pdfImg.sequence:
page=wi(image=img)
imgBlobs.append(page.make_blob('jpeg'))
for imgBlob in imgBlobs:
im=Image.open(io.BytesIO(imgBlob))
text=pytesseract.image_to_string(im,lang='eng')
extracted_text.append(text)
return (extracted_text)
I fixed it for me by editing the /etc/ImageMagick-6/policy.xml and changed the rights for the pdf line to "read|write":
Open the terminal and change the path
cd /etc/ImageMagick-6
nano policy.xml
<policy domain="coder" rights="read" pattern="PDF" />
change to
<policy domain="coder" rights="read|write" pattern="PDF" />
exit
When i was extracting the pdf images to text i faced some issues please go through the below link
https://stackoverflow.com/questions/52699608/wand-policy-error-
error-constitute-c-readimage-412
https://stackoverflow.com/questions/52861946/imagemagick-not-
authorized-to-convert-pdf-to-an-image
Increasing the memory limit please go through the below link
enter code here
https://github.com/phw/peek/issues/112
https://github.com/ImageMagick/ImageMagick/issues/396