I’m using a WebODM docker instance to process drone images on our farm. This is mostly working well, I’m using
fast-orthophoto because I’m not really interested in anything 3d at this point.
I tried using Agisoft Metashape before and was able to create an Gogoel Maps tile-package with that. Comparing these, I see that Metashape seems to scale the tiles much smoother than (Web-)ODM is doing. For comparison, here are two screenshots from the same dataset, the first processed using WebODM and being viewed in the embedded map viewer, and the other processed using Metashape and exported to a Google Maps pack:
It looks to me that (Web-)ODM is using nearest-neighbor resizing while Metashape is using some smoothing technique like bilinear resampling. I can see that both may have their uses, but the hard colors and jerky lines in the left image kind of obstruct seeing any subtle patterns like the circles you can clearly see around the sprinklers on the right.
I’m seeing this on all the datasets I’ve processed (I’m showing this one because this is the only one I’ve also done in Metashape). The options I’ve used are the following:
dsm: true, dtm: true
Is there any setting I can use to control the way in which the tiles are scaled to get a smoother result?