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Author Topic: Importing Pointcloud from Laserscanner (Cyclone Export)  (Read 2015 times)

Reservoirdog

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Importing Pointcloud from Laserscanner (Cyclone Export)
« on: April 02, 2019, 09:14:18 AM »
Hi Agisoft Community!

I'm experiencing problems importing pointclouds into Metashape.
Only formats which can be exported by Leica Cyclone (and are supported by Metashape) are PTS and e57.
PTS got me a 24GB FIle from cyclone, but Agisoft "imported" only 3400 points on strange locations.
I then tried the e57 format which gave me a 140GB file (Ascii I assume) which started to import good in Metashape.
I then left it that way, and now after 18 hours import stands at 70% with 100% CPU and no further progress.

Is there any advice on how to successfully import pointcloud-data from Laserscanners (Leica?)?
Which formats works best? Has anyone got any pointclouds from Leica Cyclone into Metashape?


Alexey Pasumansky

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Re: Importing Pointcloud from Laserscanner (Cyclone Export)
« Reply #1 on: April 02, 2019, 11:39:49 AM »
Hello Reservoirdog,

What is the number of points in the source point cloud?

Are you able to import PTS and E57 from Cyclone for the smaller number of points?
Best regards,
Alexey Pasumansky,
Agisoft LLC

Reservoirdog

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Re: Importing Pointcloud from Laserscanner (Cyclone Export)
« Reply #2 on: April 02, 2019, 02:24:28 PM »
Hey Alexey,

Total Number of points would be 574 Million Points.
I now tried successfully importing a small number (7 Million) using both formats.
For the large Import it takes about 3 hours to reach 70%, then I think it starts to calculate point normals.
Are the point normals necessary? Is it possible to skip the calculation?

Next try would be to start the import on a weekend to see if normals-calculation will succeed with the large number of points....

Alexey Pasumansky

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Re: Importing Pointcloud from Laserscanner (Cyclone Export)
« Reply #3 on: April 03, 2019, 09:14:35 PM »
Hello Reservoirdog,

If the source dense cloud has normals, they wouldn't be re-calculated. E57 format should support normals.

Normal calculation cannot be skipped (if this data is missing in the input cloud), as this information is required by further processing stages, such as mesh or tiled model generation. Also without normals the display of the cloud would be limited.

Best regards,
Alexey Pasumansky,
Agisoft LLC

Reservoirdog

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Re: Importing Pointcloud from Laserscanner (Cyclone Export)
« Reply #4 on: April 08, 2019, 08:28:25 AM »
I tried the Import again over the past weekend.... without success.
Something seems not right here... Nearly 3 days on 100% CPU,
still no visible progress...
How can 7 Million points take few seconds, but 574 Million points take forever?  :o

Reservoirdog

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Re: Importing Pointcloud from Laserscanner (Cyclone Export)
« Reply #5 on: April 08, 2019, 12:04:55 PM »
Update:
After updating Cyclone from 9.3.0 to 9.3.2 the e57-Export shrunk from 138GB to 11GB  ::)
and the Import was successful after about an hour...