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

[Peter Hintze]

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

[Jochen Rapidlasso]

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]

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]

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]

here is a better sketch of the idea:

rapid...@gmail.com schrieb am Freitag, 30. September 2022 um 13:08:43 UTC+2:

[Eoin Killeen]

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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Eoin Killeen

Technical Specialist

[brent.m...@gmail.com]

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]

A good suggestion, I would use that! 

I am doing this with LASTools but in multiple steps. lastrack + lasdistance etc 

[Peter Hintze]

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]

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]

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

[Jochen Rapidlasso]

Hello everybody,
with latest release of LAStools (230731) we introduce "las3dpoly" which settles this issue. See this article with some details about the new tool.

Best regards,

Jochen @rapidlasso

[Eoin Killeen]

Great news, 

We look forward to testing it out!

Thanks,

Eoin

[Brett Sheehan]

Hi Jochen,

Nice work on 3d Poly. Using it to classify car noise!

On the topic of powerlines. I note the advances in classification algorithms on the market that are aiming to classify more specific features.

Examples such as specifically classifying Powerlines, power poles and vegetation (actual veg opposed to low/med/high)

Is this something lastools might look at developing?

Cheers,

Brett