44 lines
1.5 KiB
Markdown
44 lines
1.5 KiB
Markdown
OCRmyPDF
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========
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Script aimed at performing optical character recognition (OCR) on PDF files from PDF files containing only images
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To get the script usage, call: ./OCmyPDF.sh -h
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Features
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--------
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- Generates a searchable PDF/A file from a PDF file containing only images
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- Keeps the exact resolution of the original embedded images
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- If requested deskew and / or clean the image before performing OCR
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- Validates the generated file against the PDF/A specification using jhove
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Motivation
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----------
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I searched the web for a free tool to OCR PDF files on linux/unix:
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I found many, but none of them was satisfying.
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- Either they produced PDF files with misplaced text below the image (making copy/paste impossible)
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- Or they changed the resolution of the embedded images
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- Or they generated PDF file having a rediculous big size
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- Or they crashed when trying to OCR some of my PDF files
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- Or they did not produce valid PDF files (even though they were readable with my current PDF reader)
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On top of that none of them produced PDF/A files (format dedicated for long time storage / archiving)
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... so I decided to develop my own tool (using various existing scripts as an inspiration)
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Install
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--------
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TODO
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Install jhove:
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download jhove from here: http://sourceforge.net/projects/jhove/files/jhove/
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After extracting the JHOVE files to some directory "jhove", you have to edit the file "jhove/conf/jhove.conf" and change something in "something" to the actual directory (ending in "/jhove").
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