.. meta::
    :description: Extensions Classifiers Trainer

Classifiers
===========

This section explains how to create and edit classifiers.

Usage
-----
A classifier is used to classify an image in the
:mod:`OrsPythonPlugins.OrsTrainer.OrsTrainer`.

A classifier contains all the information about the number of dataset required, the number of segmentation classes,
the pixel or region features to apply and the training information.

Files location
--------------
To be recognized by the application, classifiers should be located in one of these folders:

- %LocalAppData%/ORS/Dragonfly(*version*)/pythonUserExtensions/PythonPluginExtensions/SegmentationTrainer/classifiers (available for the current user)
- %ProgramData%/ORS/Dragonfly(*version*)/pythonAllUsersExtensions/PythonPluginExtensions/SegmentationTrainer/classifiers (available for all users)
- %ProgramData%/ORS/Dragonfly(*version*)/python/ORSServiceClass/segmentation/classifiers (distributed with the application)

.. note::
    All the mandatory files defining a classifier should be contained in a folder in one of these locations.

File creation
-------------
To create an empty classifier, start the :mod:`OrsPythonPlugins.OrsTrainer.OrsTrainer`
(found in *Tools/Segmentation Trainer*).
In the tab *Classifier*, press the *New* button.

You can also create a new classifier by doing a right-click on an existing classifier from this same panel
and selecting *Duplicate*.

File edition
------------
Use the Segmentation Trainer form.