Hello All,
Is there a way to combine two similar LAS files into one? The scenario here is that I have two of the same LAS files but with varying record information. For example, one has RGB and the other has Classification but I'd need both RGB and Classification to be assigned for the final combined LAS file. Is this possible?
Thank you,
Combining LAS files
-
- I have made <0 posts
- Posts: 3
- Joined: Wed Jul 15, 2015 7:49 pm
- 8
- Full Name: Michael
- Company Details: Certainty3D
- Company Position Title: Lead Applications Engineer
- Country: USA
- Linkedin Profile: Yes
- Scott.Warren
- V.I.P Member
- Posts: 364
- Joined: Tue Jan 30, 2018 3:14 pm
- 6
- Full Name: Scott Warren
- Company Details: WSP Canada
- Company Position Title: Project Manager - Geomatics Engineer
- Country: Canada
- Linkedin Profile: Yes
- Location: Dartmouth, Nova Scotia, Canada
- Has thanked: 44 times
- Been thanked: 111 times
- Contact:
Re: Combining LAS files
LasTools might be what you want to look into. It is a free to use program that has a wide array of tools for working with LAS files. I've never tried to separate out a particular column/portion of data, but i wouldn't be surprised if LasTools could.
https://rapidlasso.com/lastools/
https://rapidlasso.com/lastools/lasmerge/
Sorry I don't have a definitive answer.
https://rapidlasso.com/lastools/
https://rapidlasso.com/lastools/lasmerge/
Sorry I don't have a definitive answer.
-
- V.I.P Member
- Posts: 846
- Joined: Tue Feb 26, 2013 9:32 pm
- 11
- Full Name: Massimo De Marchi
- Company Details: Massimo De Marchi
- Company Position Title: freelancer
- Country: Italy
- Skype Name: massimo_de_marchi
- Has thanked: 15 times
- Been thanked: 53 times
- Contact:
-
- I have made <0 posts
- Posts: 2
- Joined: Thu Jun 14, 2018 5:09 pm
- 5
- Full Name: Sean Israelson
- Company Details: PA Spatial Solutions Inc
- Company Position Title: Field Sales Specialist
- Country: Canada
- Linkedin Profile: Yes
Re: Combining LAS files
Cloud compare using manual or automated registration and the merge function will get you where you need to be
There is also an automated center for spherical targets to help register multiple scans
There is also an automated center for spherical targets to help register multiple scans
- gblawes
- I have made <0 posts
- Posts: 5
- Joined: Thu Sep 11, 2014 7:51 pm
- 9
- Full Name: Greg Lawes
- Company Details: point3D
- Company Position Title: Principal
- Country: USA
- Skype Name: gblawes
- Linkedin Profile: Yes
- Location: US East Coast, Gulf Coast
- Contact:
Re: Combining LAS files
Take a look at 3DPointLogic from Solv3D at https://solv3d.com/products/3dpointlogic/. 3DPointLogic is a powerful application with user-friendly graphical interface that processes 3D point cloud data from ANY source (UAV/drone, mobile, static). 3DPointLogic includes optimized methods for
Point Cloud Processing, Format conversion,Tiling, Transformation, QA/QC and Validation, and is bundled with a unique LAS viewer. Web site has a 30-day eval.
Point Cloud Processing, Format conversion,Tiling, Transformation, QA/QC and Validation, and is bundled with a unique LAS viewer. Web site has a 30-day eval.
Greg.
Gregory B. Lawes
point3D - email [email protected] - phone (800) 616-1003 - Skype gblawes - web www.point3D.com - Linkedin company/point3d-inc
Gregory B. Lawes
point3D - email [email protected] - phone (800) 616-1003 - Skype gblawes - web www.point3D.com - Linkedin company/point3d-inc
- smacl
- Global Moderator
- Posts: 1409
- Joined: Tue Jan 25, 2011 5:12 pm
- 13
- Full Name: Shane MacLaughlin
- Company Details: Atlas Computers Ltd
- Company Position Title: Managing Director
- Country: Ireland
- Linkedin Profile: Yes
- Location: Ireland
- Has thanked: 627 times
- Been thanked: 657 times
- Contact:
Re: Combining LAS files
Michael,
First port of call would probably be Martin Isenburg and LASTools as already suggested, but if the data sets aren't identical (i.e. good 1-1 correspondence of all points), the solution could be time consuming as your going through millions of points to get the nearest point in a dataset of millions more points. I'd probably go with either an octree or voxel map if I had to write it myself, but it is not quite as trivial as it appears at face value.
First port of call would probably be Martin Isenburg and LASTools as already suggested, but if the data sets aren't identical (i.e. good 1-1 correspondence of all points), the solution could be time consuming as your going through millions of points to get the nearest point in a dataset of millions more points. I'd probably go with either an octree or voxel map if I had to write it myself, but it is not quite as trivial as it appears at face value.
-
- I have made <0 posts
- Posts: 3
- Joined: Wed Jul 15, 2015 7:49 pm
- 8
- Full Name: Michael
- Company Details: Certainty3D
- Company Position Title: Lead Applications Engineer
- Country: USA
- Linkedin Profile: Yes
Re: Combining LAS files
The two data sets will be identical and I'll definitely have to give LASTools a look as they keep popping up in conversation. Essentially I've been given two identical pointclouds that have been run through 2 different processes, one that assigned RGB and one that assigned classification. Now I'm looking to merge these assigned bits of information into one final complete LAS file.smacl wrote: ↑Sun Jun 17, 2018 4:59 pm Michael,
First port of call would probably be Martin Isenburg and LASTools as already suggested, but if the data sets aren't identical (i.e. good 1-1 correspondence of all points), the solution could be time consuming as your going through millions of points to get the nearest point in a dataset of millions more points. I'd probably go with either an octree or voxel map if I had to write it myself, but it is not quite as trivial as it appears at face value.
Thank you for your input!
- lastools
- V.I.P Member
- Posts: 144
- Joined: Tue Mar 16, 2010 3:06 am
- 14
- Full Name: Martin Isenburg
- Company Details: rapidlasso - fast tools to catch reality
- Company Position Title: creators of LAStools and LASzip
- Country: Germany
- Skype Name: isenburg
- Linkedin Profile: Yes
- Been thanked: 1 time
- Contact:
Re: Combining LAS files
Hello from @LAStools,
indeed, the lascopy tool of LAStools should be able to do this efficiently already (and if not it is easy to add). For a free solution you could use the free and open source las2txt to convert the relevant columns of both files into two large ASCII text files, then somehow merge the entries for each point into one line, and then use the free and open source txt2las on the combined ASCII text file to go back to a LAS file that then combines all the attributes.
Regards,
Martin @rapidlasso
indeed, the lascopy tool of LAStools should be able to do this efficiently already (and if not it is easy to add). For a free solution you could use the free and open source las2txt to convert the relevant columns of both files into two large ASCII text files, then somehow merge the entries for each point into one line, and then use the free and open source txt2las on the combined ASCII text file to go back to a LAS file that then combines all the attributes.
Regards,
Martin @rapidlasso