I am only interested in image quality and OCR output.
PDF2IMAGE PYTHON PDF
Note: pdf2image uses which is a PDF rendering library based on the xpdf-3.0 code base and will not work without it. The following command can be used for installing the pdf2image library using pip installation method. (I've tried both PNG and JPG.)Īssume I have infinite time, computing power and storage space. pdf2image is a python library which converts PDF to a sequence of PIL Image objects using pdftoppm library. With Image(filename="page.pdf", resolution=300) as img:īut if I simply take a screenshot of the PDF on a Mac, the quality is higher than using either Python conversion method.Ī good way to see this is to run Tesseract OCR on the resulting images - both Python methods give average results, whereas the screenshot gives perfect results. A python (3.7+) module that wraps pdftoppm and pdftocairo to convert PDF to a PIL Image. pdf2image supports 2 methods to convert pdf to images. Pages = convert_from_path("page.pdf", dpi=300) Pdf2image This is the python library which calls the pdftoppm library to convert a pdf to a sequence of PIL image objects. Pdf2image is a python module that wraps pdftoppm and pdftocairo to convert PDF to a PIL Image object. #pdf2image (altering dpi to 300/600 etc does not seem to make a difference):
There seem to be two main methods for converting a PDF to an image (JPG/PNG) with Python - pdf2image and ImageMagick/ Wand. But the quality is being degraded during the conversion. Still not sure what the underlying reason was though.I am tying to convert a PDF to an image so I can OCR it. I've removed a few detours I used in my original code, and now it works. So if you have any idea what that is about, please do let me know!ĮDIT: So, when I try this in a random notebook, it actually works fine. Sometimes the output is an empty 1x1 image, instead, which I also haven't found a reason for.
PDF2IMAGE PYTHON INSTALL
all images in that list are of the last page You can install it simply using, pip install pdf2image Once installed you can use following code to get images. Print(f" Could not convert PDF pages to JPEG image due to error: \n ''") The first one is a general library called tesseract-ocr.
# Read PDF and convert pages to PPM image objects Then: pip install pdf2image Next, we need to install the tools for performing the OCR process. Open in app Extract PDF Text While Preserving Whitespaces Using Python and Pytesseract OCR PDF and Image files using pdf2image and pytesseract PDF data could be tricky to deal with in a data science project. Using Python to Convert PDFs to Images: Poppler and pdf2image for PDF Conversion. I've found some vague suggestion that the use_cropbox argument might be used, but modifying it has no effect. So when I use the pdf2image python import, and pass a multi page PDF into the convert_from_bytes()- or convert_from_path() method, the output array does contain multiple images - but all images are of the last PDF page (whereas I would've expected that each image represented one of the PDF pages).Īny idea on why this would occur? I can't find any solution to this online.
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