- Wed Sep 25, 2024 3:54 pm
#297
Hi Elena,
Sure Correlator3D requires two DEMs, which should be generated from two different image sets of
the same area. It performs a comparative analysis and determines in 3D the importance of changes.
The software outputs change detection results as a DEM with values corresponding to the
differences in elevation between the two DEMs.
To perform change detection, please follow these steps:
1. Select “Change detection…” in the “Tools” menu.
2. Specify the reference DEM (i.e. the DEM as it appears before changes) using the
corresponding drop-down menu.
3. Specify the comparison DEM (i.e. the DEM as it appears after changes) using the
corresponding drop-down menu.
4.Specify the detection range. This implies that only changes within that range (vertically)
will be detected.
5. Click on the “Process” button. Real-time feedback will be provided on the overall progress
of processing. Once the process is done, the change detection DEM will appear in the
main window.

David Alamillo
Photogrammetry Specialist
dalamillo@simactive.com
www.simactive.com