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General / Anybody have any tips for DEM building?
« on: August 07, 2019, 09:56:20 PM »
Hi everybody!
I am trying to determine crop height by subtracting a digital surface model (DSM) from a previously-flown digital elevation model (DEM) using RTK ground-control points for accuracy. I am using a Micasense RedEdge MX as my camera, attached to a DJI Matrice 200. I fly at an altitude of 50 feet (50.24 meters).
I am not liking the consistency that I am getting; I fly weekly, and my height models differ from week to week. Are there any Agisoft Metashape settings I should change?
Here is what I currently work with:
-Double-overlap grid flight mapping pattern
-20 RTK ground-control points
-Tie point limit: 60K
-Sparse point cloud alignment accuracy: High
-No gradual selection procedure
-Dense point cloud alignment accuracy: High
-Depth filtering: Mild
Any help would be wonderful. Thanks everybody.
-IHB
I am trying to determine crop height by subtracting a digital surface model (DSM) from a previously-flown digital elevation model (DEM) using RTK ground-control points for accuracy. I am using a Micasense RedEdge MX as my camera, attached to a DJI Matrice 200. I fly at an altitude of 50 feet (50.24 meters).
I am not liking the consistency that I am getting; I fly weekly, and my height models differ from week to week. Are there any Agisoft Metashape settings I should change?
Here is what I currently work with:
-Double-overlap grid flight mapping pattern
-20 RTK ground-control points
-Tie point limit: 60K
-Sparse point cloud alignment accuracy: High
-No gradual selection procedure
-Dense point cloud alignment accuracy: High
-Depth filtering: Mild
Any help would be wonderful. Thanks everybody.
-IHB