tessearct OCR

Posted 3 years ago - updated 3 years ago ocr

• https://github.com/tesseract-ocr/tesseract
• https://stackoverflow.com/questions/44071353/tesseract-empty-page
• https://tesseract-ocr.github.io/tessdoc/Installation.html
• https://github.com/thiagoalessio/tesseract-ocr-for-php

running

./tesseract*.AppImage -l eng /mnt/ssd/Pictures/photos/2019/01/15/20190115-1928-2.JPG  ocr -l eng --psm 9
./tesseract*.AppImage -l eng /mnt/ssd/Pictures/photos/2019/12/30/20191230-1403-1.JPG  ocr -l eng 
./tesseract*.AppImage /mnt/ssd/Pictures/photos/2019/12/30/20191230-1403-1.JPG  ocr  --psm 11

usage

age segmentation modes:
  0    Orientation and script detection (OSD) only.
    1    Automatic page segmentation with OSD.
  2    Automatic page segmentation, but no OSD, or OCR.
  3    Fully automatic page segmentation, but no OSD. (Default)
  4    Assume a single column of text of variable sizes.
  5    Assume a single uniform block of vertically aligned text.
  6    Assume a single uniform block of text.
  7    Treat the image as a single text line.
  8    Treat the image as a single word.
  9    Treat the image as a single word in a circle.
 10    Treat the image as a single character.
 11    Sparse text. Find as much text as possible in no particular order.
 12    Sparse text with OSD.
 13    Raw line. Treat the image as a single text line,
                        bypassing hacks that are Tesseract-specific.<br>

OCR Engine modes: 0 Original Tesseract only. 1 Neural nets LSTM only. 2 Tesseract + LSTM. 3 Default, based on what is available.