Agisoft Metashape

Agisoft Metashape => Python and Java API => Topic started by: adamrabinowitz on April 22, 2021, 11:38:53 PM

Title: Scripting for texture generation without redoing previous steps
Post by: adamrabinowitz on April 22, 2021, 11:38:53 PM
I'm working with a supercomputing cluster to develop a set of python scripts to run computationally-intensive processes remotely on an HPC node. We've sorted out the photo alignment, dense cloud/depthmaps, and mesh steps using the current Agisoft Python manual, but we're having trouble with the texture script.

So far, we've been unable to run a command for texture alone, even on a chunk for which all other steps have already been completed. The only working version of the script is the same as the model in the guide:

chunk.buildDepthMaps(downscale=2, filter_mode=ms.FilterMode.ModerateFiltering)
chunk.buildDenseCloud( point_colors=True, point_confidence=True )

This seems not to overwrite the optimization work we've done manually after the initial alignment, but it does overwrite any dense-cloud editing that we've performed manually after the dense-cloud generation stage. It also takes a much longer time than necessary, since it's re-running the earlier steps, which is a problem when we have limited HPC cycles.

The models involved are often too large to let us easily run the texture process through the GUI on a local machine. Does anyone have a script that will only carry out the texture steps (buildUV, buildTexture) on a chunk for which the other steps are already complete? We're not sure where the problem is arising. Thanks!

Title: Re: Scripting for texture generation without redoing previous steps
Post by: Alexey Pasumansky on April 24, 2021, 01:51:24 PM
Hello adamrabinowitz,

buildUV command should be available, if there's a mesh model in the active chunk. So there shouldn't be problems running only buildUV and buildTexture in the pre-processed project with the mesh model.

For debugging purposes I would suggest to create a small script sample that opens existing project and tries to generate the texture. Something like the following:

Code: [Select]
import Metashape
doc = Metashape.Document() #path to the existing Metashape project file
chunk = doc.chunk #active chunk in the project
if not chunk.model:
    print("no active mesh model in the project")