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

# cntraining(1)

character normalization training for Tesseract

## NAME

cntraining - character normalization training for Tesseract

## SYNOPSIS

**cntraining** \[-D *dir*\] *FILE*...

## DESCRIPTION

cntraining takes a list of .tr files, from which it generates the **normproto** data file (the character normalization sensitivity prototypes).

## OPTIONS

- \-D *dir*

  Directory to write output files to.

## SEE ALSO

[tesseract(1)](/tesseract/1.md), [shapeclustering(1)](/shapeclustering/1.md), [mftraining(1)](/mftraining/1.md)

**https://tesseract-ocr.github.io/tessdoc/Training-Tesseract.html**

## COPYING

Copyright (c) Hewlett-Packard Company, 1988 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).