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Author Topic: Aerial Lidar data merge Terrestrial laser scan data  (Read 323 times)

TJ Jeong

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Aerial Lidar data merge Terrestrial laser scan data
« on: November 28, 2022, 11:02:10 AM »
Hello Agisoft Team

I want to merge Aerial Lidar data(.las) with Terrestrial Laser scan data(ex. pts, ptx, e57...etc)

Las data has coordinate. but TLS data does not have coordinate(no georeference)

So how can i do this?


Kiesel

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Re: Aerial Lidar data merge Terrestrial laser scan data
« Reply #1 on: November 28, 2022, 02:00:55 PM »

TJ Jeong

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Re: Aerial Lidar data merge Terrestrial laser scan data
« Reply #2 on: November 28, 2022, 02:15:28 PM »
Hi TJ Jeong,

you might have a look here for Metashape 2.0 beta:

https://agisoft.freshdesk.com/support/solutions/articles/31000168474-terrestrial-laser-scans-processing-in-metashape-2-0-0

Regards

Kiesel
Hello Kiesel

I try this. but TLS doesnt have location. so when i input las and e57, their location isnt match.

so i cannot merge these files

Can you explain specific process procedure?
« Last Edit: November 28, 2022, 02:24:15 PM by TJ Jeong »

Kiesel

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Re: Aerial Lidar data merge Terrestrial laser scan data
« Reply #3 on: November 28, 2022, 06:01:20 PM »
Hi TJ Jeong,

I havn't done this myself (because we don't have aerial Lidar), but I think that both should be in the same coordinate system. Doesn't you have GCPs in the same system for both?


Best regards

Kiesel
« Last Edit: November 28, 2022, 06:08:15 PM by Kiesel »

Alexey Pasumansky

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Re: Aerial Lidar data merge Terrestrial laser scan data
« Reply #4 on: November 28, 2022, 07:02:10 PM »
Hello TJ Jeong,

In Metashape 2.0 you can place markers on the point clouds directly (without images) and use them for laser scans alignment.
Best regards,
Alexey Pasumansky,
Agisoft LLC

TJ Jeong

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Re: Aerial Lidar data merge Terrestrial laser scan data
« Reply #5 on: November 29, 2022, 05:37:33 AM »
Hi TJ Jeong,

I havn't done this myself (because we don't have aerial Lidar), but I think that both should be in the same coordinate system. Doesn't you have GCPs in the same system for both?


Best regards

Kiesel

Hello Kiesel

When i place marker(GCP) las and e57 too, and try to merge

but didnt merge same point. like attachment photo



TJ Jeong

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Re: Aerial Lidar data merge Terrestrial laser scan data
« Reply #6 on: November 29, 2022, 05:41:44 AM »
Hello TJ Jeong,

In Metashape 2.0 you can place markers on the point clouds directly (without images) and use them for laser scans alignment.

Hello Alexey

I converted laser scan and place marker las and e57 too. but they didnt merge correctly(they placed different location)

i attached images.

so what can i do this problem?
« Last Edit: November 29, 2022, 05:43:27 AM by TJ Jeong »