SLPK invert Z

[Kjellis85]

I did an slpk export of a tiled model and tried import to arcgis pro, but I am getting negative Z-values close to the inverse of actual Z. The model looks fine and there is no issue with display, other than an inverse of Z.

[Alexey Pasumansky]

Hello Kjellis85,

In which coordinate system your model is referenced? Is Z axis oriented correctly in PhotoScan window?

[Kjellis85]

Z-axis is correct in PS view, the model is in ETRS89 / UTM zone 33N EPSG: 25833

[Alexey Pasumansky]

Hello Kjellis85,

I've tried to export random project in this projection in SLPK format and it has been properly oriented in space. Just to clarify - are you observing inverse Z orientation of the model or a shift along Z (with the proper Z-up orientation of the model)?

Also is it observed also in pre-release version Metashape 1.5.0, if you export the data in SLPK format from the same project?

[Alexey Pasumansky]

It appears that the vertical shift is caused by the fact that SLPK export is performed in WGS84 + EGM96 coordinate system, so the coordinates of the model are transformed accordingly. So can you please check that the altitude information for the reference points used in your project are defined in accordance to the chunk's coordinate system.

As far as I am aware, SLPK format is optimized for online viewers in order to display the data on the world's globe. So there do not seem to be any options for saving the data in other systems, but if you can provide any reference for such an option for SLPK we'll check that.