Agisoft Metashape > General
Should I build dence point cloud at all now?
kirk:
I see I can build a mesh from depth maps . So for a best quality possible is it necessary to build dense cloud ?
Would it provide extra details if I do the mesh using depth maps anyway?
Maybe I just need to do the depth maps in higher quality and that's all?
cbnewham:
I dropped using dense clouds long ago. I found the depth maps to be far more accurate and the whole process is quicker.
I find it surprising so many on here still use dense clouds - I imagined this was due somehow to doing drone-based photogrammetry.
kirk:
--- Quote from: cbnewham on June 03, 2021, 01:36:02 AM --- I imagined this was due somehow to doing drone-based photogrammetry.
--- End quote ---
Wonder how it's related? Not good enough photos from drones?
cbnewham:
--- Quote from: kirk on June 03, 2021, 03:23:01 AM ---
--- Quote from: cbnewham on June 03, 2021, 01:36:02 AM --- I imagined this was due somehow to doing drone-based photogrammetry.
--- End quote ---
Wonder how it's related? Not good enough photos from drones?
--- End quote ---
I was thinking that maybe with all the soft edges caused by dense foliage, grass, etc, that maybe a dense cloud was better. I don't do drone photography and my photogrammetry is restricted to sculpture, so I don't really know what issues drone photogrammetry faces. From a cursory glance at the postings I've seen that most references to dense clouds come from drone photographers.
Perhaps some of those using dense clouds can enlighten us as to why they don't use the depth map capability?
Paulo:
Hi all,
when using drone photogrammetry for mapping purpose (i.e. basically nadir looking imagery), the main products are DEMs and OrthoMosaic. And the basic and most precise input for DEMs (surface or terrain) are dense clouds and not meshes. Especially if you need to generate a Terrain model where dense cloud classification is an absolute prerequisite.
So for these applications, the idea of using just depth maps based mesh generation does not apply....
Maybe this makes more sense....
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