====== Image Only Measurements =======

The goal of this exercise is to demonstrate to the user how to measure using images only by changing the 3D hover preferences. The user will be able perform measurements using Forward Intersection Technique and Reference Planes Intersection.

  * Relevant for : 3DM Feature Extraction, 3DM Content Manager, 3DM Publisher 
  * Product use for recording : 3DM Feature Extraction Standard 18.1.1
===== Preparations =====

=== Reference Documentation ===

  * [[180:technology:3d_mapping:measure_triangulation|]]
  * [[180:desktop:preferences:3dhover|]]
  * [[180:desktop:map:3d_measurements|]]

=== Preceding Exercises ===  

  * [[exercises:desktop:navigate_panorama|]]

=== Resources ===

  * CA Toronto\MMS Orbit Runs

===== Exercise =====
Measure using images only techniques

  - Add run \\ Add the run  CA Toronto by Optech.
  - Measurements  \\ Measure one pole using  "Forward Intersection" technique, using the "Point" tool.
  - Measurements  \\ Measure one pole using "Reference Planes Intersection" technique, using same tool.
===== Results =====

{{  :exercises:desktop:exercise_image_measurem0.png?nolink&800  |}}
{{  :exercises:desktop:exercise_forward_intersectiony.png?nolink&800  |}}
{{  :exercises:desktop:exercise_reference_planes_intersectiony.png?nolink&800  |}}