Skip to main content
3 votes
Accepted

Abnormal Output of OpenDroneMap with GCP file

The problem in its processing is that it is georeferencing all ground control points with the same elevation, when they clearly do not have the same elevation. The georeferencing process is not ...
Gabriel De Luca's user avatar
3 votes

How to determine if a .obj 3D Mesh file is geo-referenced or not?

Short answer is that OBJ files are not likely georeferenced. According to Wikipedia, OBJ (aka Wavefront) files are "a simple data-format that represents 3D geometry alone". The article continues to ...
J. Sargent's user avatar
3 votes

How to get correct coordinates system of drone images?

The coordinate system (actually the Spatial Reference System) is more than likely WGS84, because it's the default system for all GNSS systems. This, however, is not all that is needed to ...
Roberto Ribeiro's user avatar
2 votes
Accepted

What vertical datum for OpenDroneMap with no GCP

The reconstruction will use the Z values from the image EXIF header as derived from the on-board GNSS unit. The resulting surface will be in WGS EGM96 as returned by the satellites.
GBG's user avatar
  • 9,969
2 votes

Numbers on Potree

If you're using Potree in your browser, you can open your browser's developer tools and interact with the viewer. If you go to the console, you can enter the following line to get the unit of your x,y,...
JiyuuSensei's user avatar
2 votes

OpenDroneMap returns error on merging depthmaps?

It turns out that this was not an issue with OpenDroneMap. My computer ran out of physical memory. Deleting/moving other files freed memory and allowed me to finish the reconstruction.
GBG's user avatar
  • 9,969
2 votes

Generating raster (spec. GeoTiff) out of mesh file (.ply)?

You can use cloudcompare or meshroom software to convert the .ply mesh file to a point cloud (.las or .laz). Once you have it in point cloud format (with normals computed), use a simple script in R ...
Kartograaf's user avatar
  • 2,947
2 votes

Setting GCP in OpenDroneMap Project

If you set your project to hold images in /exam/ple/project/images then it's the /exam/ple/project (just one level up, this directory does not need to be called project) that you should put gcp_list....
Etua's user avatar
  • 21
1 vote

Build CityGML Buildings from OBJ files of OpenDroneMap

If you just want to visualise the OBJ, going to complex semantic data model is (1) overkill; (2) not necessary; (3) a waste of time. Cesium supports glTF, and you can just convert to this. If you ...
Hugo Ledoux's user avatar
1 vote

Pix4D and ODM generated tiff with same source images not aligning?

I would recommend you set up enough GCP's in both software packages. I know that Pix4D allows for that in a pretty straight forward way -for instance following this tutorial. For OpenDroneMap the ...
Roberto Zeeland's user avatar
1 vote

How to get correct coordinates system of drone images?

As a couple people pointed out in comments, you do not have enough information in the metadata to georeference these images automatically. The lat/long coordinates you have are most likely the ...
Dan C's user avatar
  • 12.3k
1 vote

OpenDroneMap Coordinate format

I just had this problem too so I figured I'd share my solution for future reference. Turns out that these coordinates are a local projection coordinate system, and is used instead of latitude/...
Matthew Wood's user avatar
1 vote

OpenDroneMap: How to produce correct georeference ortophoto from UAV?

It looks like, you have to convert first your coordinate reference (GCP)'s frame to overlaid map. If you used different coordinate systems (Datum) or zones it can be shifted.
Muzo583's user avatar
  • 61

Only top scored, non community-wiki answers of a minimum length are eligible