====== Poles Analysis =====

This page describes the Orbit desktop extension “Poles Analysis”.  \\

=== Feature Extraction Pro ===

{{orbitgis:how_to_find.png?25&nolink|}} [[2210:desktop:workspace:main_toolbar|Main Toolbar]] > Extensions > Poles Analysis\\

===== Concepts =====

The “Poles Analysis” extension automatically detects poles based on a point cloud and set of user-defined parameters.

Pole detection is based on the geometry of the point cloud: poles are expected to be round and standing straight. Based on this assumption the process of detecting poles can be split into 3 main steps:

  * Quickly exclude areas that can not contain poles.
  * Find poles candidates and check if they meet the criteria of being round and straight.
  * (Optional) Exclude trees, traffic signs, and poles which are not on the ground.

More information, see [[2210:userdoc:extract:poles|]].

===== Source =====

Use the generic workflow for [[2210:desktop_ext:generic|]] to define the source file. 

The method for the range of interest is 'Area', 'Path' and 'Seed points'. 

===== Parameters =====

When creating a new project the parameters are read from [[2210:desktop:preferences:detectors|]] and basic set of the parameters is displayed on the sidebar; advanced parameters can be accessed by small grey circle above basic parameters.

Changing parameters in the sidebar influence the currently opened project immediately, while Parameters in the Preferences are only taken into account at the moment of Project creation.

  * [[2210:desktop:preferences:automated_pole_detection|]]

===== Test =====

Before running the detector on the range of interest, use this step to test if objects are detected as expected. 

==== Measure ====

Measure the object to test if the parameters are defined correctly. 

==== Start ====

Run the test measurement. If the object conforms with the parameters then the message "Feature is detected" will be shown, otherwise Orbit will provide a tip on the calculated statistics and recommendation on which parameters need to be changed for this feature to be detected as a feature of interest.

==== Clear ====

Clear the current test measurement.