.. meta::
    :description: Extensions Region Banks Trainer region feature

Region Banks
============

This section explains how to create and edit region banks.

.. note:: In the Segmentation Trainer, *Region feature* is used as a synonym for *region bank*.

Usage
-----
A region bank is a group of region filters with their respective parameters to be applied in the
:mod:`OrsPythonPlugins.OrsTrainer.OrsTrainer`.

File location
-------------
To be recognized by the application, region banks should be located in one of these folders:

- %LocalAppData%/ORS/Dragonfly(*version*)/pythonUserExtensions/PythonPluginExtensions/SegmentationTrainer/regionFeaturePreset (available for the current user)
- %ProgramData%/ORS/Dragonfly(*version*)/pythonAllUsersExtensions/PythonPluginExtensions/SegmentationTrainer/regionFeaturePreset (available for all users)
- %ProgramData%/ORS/Dragonfly(*version*)/python/OrsPythonPlugins/OrsTrainer/featurePresets/regionsFeatures/DefaultFeaturePresets (distributed with the application)

File creation
-------------
To create an empty region bank, start the :mod:`OrsPythonPlugins.OrsTrainer.OrsTrainer`
(found in *Tools/Segmentation Trainer*).
In the tab *Classifier*, select an existing classifier or create a new one.
Go to the tab *Features*,
select the *Region* option,
right-click in the panel *Region features* and select *Create New*.
Fill in the required fields and click on *Save*.

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

You can also right-click on an existing region bank from the panel *Region features*, select *Edit*,
do the required modifications and click on *Save as New Preset*.

File edition
------------
Right-click on an existing region bank from the panel *Region features* and select *Edit*.
Do the required modifications and click on *Save*.