Retrieving Chunk information

[Andreas Balbi]

Hi,
I am trying to retrieve, via python, all the information you get right clicking a chunk and choosing "show info".

I was able to get almost all, but I couldn't find:
- matching time
- alignment time
and, about the dense, the info in:
Dense point cloud>reconstruction parameters>processing time

Where do I get these info? In PhotoScan.app.document.chunk.meta? And how do I inspect the information in chunk.meta? metaData objects do not seem to be iterable.

[Alexey Pasumansky]

Hello Andreas,

You can access alignment, matching and dense cloud generation time via meta of the corresponding elements

Code: [Select]

chunk.meta["align/duration"]
chunk.point_cloud.meta["match/duration"]
chunk.dense_cloud.meta["dense_cloud/duration"]


[Andreas Balbi]

It works!

Just one little correction:
Alignment duration, at least in version 1.2.3, is retrievable by

Code: [Select]

chunk.point_cloud.meta["align/duration"]and not by

Code: [Select]

chunk.meta["align/duration"]
Thanks Alexey!
My best regards,
A.

[Martin_idk]

Thank you for that information, that helped me, too.

Where do I get these info? In PhotoScan.app.document.chunk.meta? And how do I inspect the information in chunk.meta? metaData objects do not seem to be iterable.

Im also interestet what other informations can be retrieved from chunk.meta. Is there any way to look in it?

Im especially interested in the RMS Reprojection Error and the amount of points in the sparse cloud.

Best Reguards

Martin

[Alexey Pasumansky]

Hello Martin,

RMS reprojection error is not stored in any meta data, so you need to calculate it by yourself.

Number of points in the sparse cloud can be extracted using len(chunk.point_cloud.points) command (if chunk variable contains the link to the chunk of interest).

[Martin_idk]

Thanks a lot Alexey!

[simon_29]

Hi,
 
I would like to know if there were a command to check if a camera is not aligned in a chunk. I could not find anything in the python reference pdf ( version 1.2.5).

Thank you in advance !

[Alexey Pasumansky]

Hello simon_29,

Code: [Select]

if camera.transform:
      print("Camera is aligned")
else:
      print("Camera is not aligned")

[simon_29]

Thanks !