local_adaptive_binarization
OCRmyPDF
| local_adaptive_binarization | OCRmyPDF | |
|---|---|---|
| 2 | 77 | |
| 124 | 12,002 | |
| - | 2.2% | |
| 0.0 | 9.5 | |
| about 1 year ago | 6 days ago | |
| C++ | Python | |
| - | Mozilla Public License 2.0 |
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local_adaptive_binarization
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Recovering redacted information from pixelated videos
Not off the shelf but here are some tools. I have no experience with them.
Wolf binarization - I think it makes the text more clear before OCR.
https://github.com/chriswolfvision/local_adaptive_binarizati...
This thing OCRs the pdf using Tesseract OCR
https://github.com/ocrmypdf/OCRmyPDF/
Two other pdf tools
https://github.com/qpdf/qpdf
https://github.com/pikepdf/pikepdf
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Tesseract OCR
(2): https://github.com/chriswolfvision/local_adaptive_binarizati...
OCRmyPDF
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TextSnatcher: Copy text from images, for the Linux Desktop
Try https://github.com/ocrmypdf/OCRmyPDF - it uses Tesseract behind the scenes and it absolutely brilliant.
- FLaNK Stack Weekly 19 Feb 2024
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Calibre – New in Calibre 7.0
I recommend running any such PDFs through OCRmyPDF.
https://github.com/ocrmypdf/OCRmyPDF
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A better document viewer
If by "like a photocopy" you mean the file contains images of text rather than text, the MacOS viewer presumably does OCR on the images. I don't know if there's a Linux document viewer with that capability built-in, but a quick search turned up the standalone tool OCRmyPDF.
- Gibts ein (CLI) tool, das Kontrast und Helligkeit von gescannten Textdokumenten dynamisch anpasst?
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OCR for a full pdf on Neoreader
For anyone interested I solved the problem by first ocr files through the free and open source software ocrmypdf avaible here
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ELI5: why is PDF such a widespread text format, instead of a format that's actually easier to edit?
ocrmypdf is nice for stuff like that.
- Donut: OCR-Free Document Understanding Transformer
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massive crop and OCR newspaper
Use imagemagick to convert them to PDF and ocrmypdf to straighten and OCR. See this explanation.
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OCR pdf and just keep the OCR text
Fair enough, maybe this might work for you, it should seperate the text from image anyway and if you have Adobe acrobat it should be able delete the background too with the edit function. It may already be able to do that if you haven't tried it
What are some alternatives?
BoofCV - Fast computer vision library for SFM, calibration, fiducials, tracking, image processing, and more.
PaddleOCR - Awesome multilingual OCR toolkits based on PaddlePaddle (practical ultra lightweight OCR system, support 80+ languages recognition, provide data annotation and synthesis tools, support training and deployment among server, mobile, embedded and IoT devices)
scantailor-advanced - ScanTailor Advanced is the version that merges the features of the ScanTailor Featured and ScanTailor Enhanced versions, brings new ones and fixes.
pdfplumber - Plumb a PDF for detailed information about each char, rectangle, line, et cetera — and easily extract text and tables.
pikepdf - A Python library for reading and writing PDF, powered by QPDF
tesserocr - A Python wrapper for the tesseract-ocr API
Paperless-ng - A supercharged version of paperless: scan, index and archive all your physical documents
im2markup - Neural model for converting Image-to-Markup (by Yuntian Deng yuntiandeng.com)
invoice2data - Extract structured data from PDF invoices
EasyOCR - Ready-to-use OCR with 80+ supported languages and all popular writing scripts including Latin, Chinese, Arabic, Devanagari, Cyrillic and etc.
pdfminer.six - Community maintained fork of pdfminer - we fathom PDF