add pdf-to-text.md

2022-08-31 20:00:29 +02:00 · 2022-08-31 20:00:29 +02:00 · d2746b505d
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+---
+title: "pdf to txt"
+tags: [ "Documentation", "data", "pdf", "ocr" ]
+---
+How to translate pdf book images to text (results are very poor, and will need lots of corrections).
+
+## Dependencies
+
+Search for 'tesseract english' (or whatever language).
+
+Arch: tesseract-data-eng and poppler-utils
+
+## Script
+
+> pdftoppm -png *file*.pdf test
+
+> for x in \*png; do
+> tesseract -l eng  "$x" - >> *out*.txt
+> done
+