4

Why is this error returned?

root@amd-3700-2gb ~/ocr_test # tesseract -l dan pdf.png out pdf
Tesseract Open Source OCR Engine v3.03 with Leptonica
Error opening data file /usr/local/share/tessdata/osd.traineddata
Please make sure the TESSDATA_PREFIX environment variable is set to the parent directory of your "tessdata" directory.
Failed loading language 'osd'
Tesseract couldn't load any languages!
Warning: Auto orientation and script detection requested, but osd language failed to load

Language list

root@amd-3700-2gb ~/ocr_test # tesseract --list-langs
List of available languages (3):
eng
dan
dan-frak

Output as txt

This works fine and output text to out.txt

tesseract -l dan pdf.png out

Output PDF

This creates out.pdf but also retuns the error mentioned and the searchable text in the PDF doesn't make sense

tesseract -l dan pdf.png out pdf
clarkk
  • 27,151
  • 72
  • 200
  • 340

1 Answers1

6

The error message is clear: it needs osd.traineddata file. You can install or download Orientation & Script Detection Data for Tesseract from https://github.com/tesseract-ocr/tessdata.

nguyenq
  • 8,212
  • 1
  • 16
  • 16