Tesseract

Contents

Operations and how to set parameters

1. Get version
2. List of Languages
3. OCR

Operations and how to set parameters

1. Get Version

This operation simply returns the version number of locally installed module.

2. List of Languages

3. OCR

Return value contains the OCR results in String.

Page segmentation options can be chosen from 13 options.

•   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.
  
  

OCR Engine selection options

•   0    Original Tesseract only.
•   1    Neural nets LSTM only.
•   2    Tesseract + LSTM.
•   3    Default, based on what is available.