Cylindrical projection with markers

[Johnh2]

I am trying to build orthomosaics of pipelines using a cylindrical projection of pipes.

I use external python scripts to fit a cylinder to the point cloud, finding its axis and radius. I then want to be able to enter this axis and radius back into Metashape to generate the orthomosaic, but I am unable to enter free floating markers, getting the error 'Location of marker point X is undefined'.

Does anyone have any ideas how I could do this?

Many thanks.

https://drive.google.com/file/d/1ztNjd9m7nMhMo3NIA3kLfU9ykTtXcQFC/view?usp=sharing

[vineg]

Hi!

You can run following command in python console before building an orthomosaic:

Code: [Select]

Metashape.app.document.chunk.transform.matrix = Metashape.Matrix.Diag((1,1,1,1))
The reason you are getting this error is that project is not referenced and model coordinates are considered unknown and thus can't be tied to marker coordinates.
Code line mentioned above sets project to use these internal local coordinates. Note that all measurements will be still invalid, since internal coordinate system is arbitrary.

[Johnh2]

That works! Fantastic, thank you!!