---
name: "classifier_tester"
section: "1"
platform: "linux"
package: "tesseract-ocr"
version: "5.5.0-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/classifier_tester"
---

# classifier\_tester(1)

for \*legacy tesseract\* engine.

## NAME

classifier\_tester - for \*legacy tesseract\* engine.

## SYNOPSIS

**classifier\_tester** -U *unicharset\_file* -F *font\_properties\_file* -X *xheights\_file* -classifier *x* -lang *lang* \[-output\_trainer trainer\] \*.tr

## DESCRIPTION

[classifier\_tester(1)](/classifier_tester/1.md) runs Tesseract in a special mode. It takes a list of .tr files and tests a character classifier on data as formatted for training, but it doesn’t have to be the same as the training data.

## IN/OUT ARGUMENTS

a list of .tr files

## OPTIONS

- \-l *lang*

  (Input) three character language code; default value *eng*.

- \-classifier *x*

  (Input) One of "pruner", "full".

- \-U *unicharset*

  (Input) The unicharset for the language.

- \-F *font\_properties\_file*

  (Input) font properties file, each line is of the following form, where each field other than the font name is 0 or 1:

  ```
  *font_name* *italic* *bold* *fixed_pitch* *serif* *fraktur*
  ```

- \-X *xheights\_file*

  (Input) x heights file, each line is of the following form, where xheight is calculated as the pixel x height of a character drawn at 32pt on 300 dpi. \[ That is, if base x height + ascenders + descenders = 133, how much is x height? \]

  ```
  *font_name* *xheight*
  ```

- \-output\_trainer *trainer*

  (Output, Optional) Filename for output trainer.

## SEE ALSO

[tesseract(1)](/tesseract/1.md)

## COPYING

Copyright (C) 2012 Google, Inc. Licensed under the Apache License, Version 2.0

## AUTHOR

The Tesseract OCR engine was written by Ray Smith and his research groups at Hewlett Packard (1985-1995) and Google (2006-2018).