How to select/clip/classify points along a 3D-corridor / 3D-polyline+buffer (a series of adjacent cuboids))

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Peter Hintze

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Sep 30, 2022, 7:02:40 AM9/30/22
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Hello, 
LAStools isgreat, i wonder if it is possible to select, clip or classify points along a 3D-corridor / 3D-polyline+buffer (a series of adjacent cuboids).

I hope the image explains what i mean.
OS instead of a 2D-polygon i want to use a 3D-corridor with XYZ values so select points along a long railway corridor.  

Thank you in advance.
Peter
peterhintze_0-1663357300392.png
peterhintze_0-1663356378581.png

Jochen Rapidlasso

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Sep 30, 2022, 7:08:43 AM9/30/22
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Hi Peter,
thanks for your suggestion.
I like that idea!
@all: Is there a need of this by other LAStools users?
In 2 weeks we are at INTERGEO fair in Essen - after that event we will priorize our todo-list and I hope your suggestion will make it to the top :)
Best regards,
Jochen @rapidlasso

Peter Hintze

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Sep 30, 2022, 11:25:30 AM9/30/22
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Hi Jochen, 

thanks for your quick reply!! I glad you like the idea.
I or a colleague will attend Intergeo as well, do you have a Booth so we can get in touch?

Viele Grüße aus Berlin ;)
Peter

Jochen Rapidlasso

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Sep 30, 2022, 11:28:17 AM9/30/22
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Hi Peter,
yes, rapidlasso has a booth at Halle: 3, C3.101 - glad to meet you and many LAStools users there.

Viele Grüße,

Jochen @rapidlasso

Peter Hintze

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Sep 30, 2022, 11:28:53 AM9/30/22
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here is a better sketch of the idea:



rapid...@gmail.com schrieb am Freitag, 30. September 2022 um 13:08:43 UTC+2:
Classify with 3D-Polygon.jpg

Eoin Killeen

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Sep 30, 2022, 1:10:15 PM9/30/22
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Hello Jochen & Peter,

It would be great to see Lastools provide this functionality. This is a regular process we run with other software for powerline applications. If you could provide the option of a 3D distance from a polyline (so a cylinder) as well as the cuboid that would be even better.

Regards,

Eoin

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brent.m...@gmail.com

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Sep 30, 2022, 2:46:47 PM9/30/22
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Same here! We often slice and dice point clouds with a similar approach to extract points around bridge supports, dams, dikes and retaining walls.

3d shape support in lasclip and more advanced classification tools would be hugely appreciated!

Michael Finlay

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Oct 21, 2022, 3:04:07 AM10/21/22
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A good suggestion, I would use that! 
I am doing this with LASTools but in multiple steps. lastrack + lasdistance etc 

Peter Hintze

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Nov 25, 2022, 7:56:55 AM11/25/22
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Hi Jochen,

i hope the Intergeo was a success for you guys. 
Could you give me an update if the above idea (3d cuboid corridors to select/clip points) is something you would consider for the LAStools-Roadmap. 
And if so, what would be the outlook for implementation? It seems there is quite q bit of demand looking at this thread. ;)

Grüße aus Berlin, Peter

Jochen Rapidlasso

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Nov 25, 2022, 8:01:44 AM11/25/22
to LAStools - efficient tools for LiDAR processing
Hi Peter,
this is almost on top of the todo: list.
We can start to specify: 
How you want to give the polyline input?
What parameters do we need?

Thanks,

Jochen @rapidlasso

Peter Hintze

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Nov 27, 2022, 4:19:13 AM11/27/22
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I will work on a generic vector processing to define the best input for the pointcloud processing. i'll get back to you asap. Peter
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