Until now LAStools have 2 tools to modify lidar data using shapefiles: las3dpoly covers the missing z dimension. This enables the user to modify points along a 3D-corridor within a LiDAR data file. One possible use for this feature is classifying powerlines. Below you will find an example of how to classify powerlines: The sample […]
Modify LAS/LAZ files via 3D polylines Read More »
The rapidlasso tutorials are intended to provide an easy introduction to LAStools. To read the tutorials offline please download the tutorials PDF. This huge PDF file (~250 MB) gives you an overview of different aspects of LAStools and how to use the tools. Videos There are a lot of videos about LAStools. This is a
rapidlasso tutorials Read More »
In the last article about the Livox MID-40 LiDAR scan of Samara we quality checked the data, aligned the flight lines and cleaned the remaining spurious scan lines. In this article we will process this data into the standard products. A focus will be on generating a smooth „median ground“ surface from the „fluffy“ scanner
Generating DTM for „fluffy“ Livox MID-40 LiDAR via „median ground“ points Read More »
In March 2019 I was welcoming Nelson Mattie from LiDAR Latinoamerica to Samara who brought along his versatile Snoopy A-Series scanning system by LidarUSA that is based on the Velodyne HDL-32E scanner. We mounted it to his truck for a mobile scan of the core downtown block, Nelson carried it on his shoulder through „Samara Jungle“ for
Preparing Drone LiDAR from Snoopy by LidarUSA carrying a Velodyne HDL-32E Read More »
September 11th 2020 seemed like a fitting day to hunt down – with a powerful drone – those who destroy our common good. The latest DJI M300 RTK drone came to visit me in Samara, Guanacaste, Costa Rica and it was carrying the gAirHawk GS-MID40 UAV laser scanning system by Geosun featuring the light-weight Livox
Strip Aligning of Drone LiDAR flown with Livox MID-40 over destroyed Mangrove Read More »
The German state of Brandenburg has recently started to provide many of their basic geospatial data as open data, such as digital ortophotos in TIF and JPG formats, vertical and horizontal control points in gzipped XML format, LOD1 and LOD2 building models in zipped GML format, topographic maps from 1:10000 to 1:100000 in zipped TIF
Converting Rasters from inefficient ASCII XYZ to more compact LAZ or TIF Formats Read More »
A while back we had a first look at the Single Photon LiDAR from Leica’s SPL100 sensor (that eventually turned out just to be an SPL99 because one beamlet or one receiver in the 10 by 10 array was broken and did not produce any returns). Today we are taking a closer look at a
Removing Noise from Single Photon LiDAR to Generate a Smooth DTM Read More »
We got a little note from Vítězslav Moudrý from CULS pointing out that the Geodesy, Cartography and Cadastre Authority of the Slovak Republic has started releasing LiDAR as open data on their interactive Web portal. Congratulations, Slovakia!!! Welcome to the Open Data Party!!! We managed to download some data starting from this Web portal link and
Another European Country Opens LiDAR: Welcome to the Party, Slovakia! Read More »
Again and again we have preached about the importance of quality checking when you first get your expensive LiDAR data from the vendor or your free LiDAR data from an open data portal. The minimal quality check we usually advocate consists of lasinfo, lasvalidate, lasoverlap, and lasgrid. The information computed by these LAStools can reassure
Completeness and Correctness of Discrete LiDAR Returns per Laser Pulse fired Read More »
Finally some really good news out of Saxony. ? After North Rhine-Westphalia and Thuringia released the first significant amounts of open geospatial data in Germany in a one-two punch in January 2017, we now have a third German state opening their entire tax-payer-funded geospatial data holdings to the tax-paying public via a simple and very easy-to-use
Another German State Goes Open LiDAR: Saxony Read More »
