One of the first LAStools features was to export LAS/LAZ to textfiles and import textfiles to LAS/LAZ (las2txt and txt2las). Typically, the format for parsing the textfile is specified in the “-parse” or “-oparse” argument. The parameters of this argument define which properties of a lidar point are exported or imported. With Version 240125, these […]
Converting LAS/LAZ files to textfiles with generated headers Read More »
The LAStools filter module was already able to filter colors according to RGB values. However, it sometimes makes sense to filter not only for RGB, but also for hue, saturation, and brightness values. Therefore, the HSL and HSV color models are quite common. LAStools now support these color models in filtering points. These are the
Point cloud filtering by HSL and HSV color models Read More »
LAStools runs on Windows and Linux. This article describes the features and installation of LAStools for Linux. Features All binaries are 64bit.Multicore (-cores) is supported.BLAST is not available right now on Linux.The „-gui“ option is not available because most users run LAStools@Linux on the command line for batch processing. Installation Download the binaries via a
LAS and LAZ are both very common and powerful formats to save pointcloud data. Nevertheless, some users, or programs, may require another point data format. A common general format to save geometric data, for said requirement, is the wavefront OBJ format. Using one of the sample LAZ files of LAStools we will show you how
Convert LAS/LAZ Pointcloud to Wavefront OBJ Files Read More »
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 »
