Canopy Height Model based on Airborne Laserscanning using LAStools
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Download of LAStools
LASTools is software for efficient processing of LiDAR data (Laser scanning data) programmed by rapidlasso GmbH. There are two parts of LAStools: one part is Open Source (LGPL 2.1), the other part is Closed Source and requires licensing for most commercial or government uses. The closed source software may be used without charge for non-profit personal, non-military educational, or non-profit humanitarian purposes. Note, that the output of the unlicensed version can be slightly distorted after certain point limits (1 million points) are exceeded. Download the recent version as LAStools.zip file. Extract the zip file to a folder without space (e.g. C:\LAStools).
Configure Tools for LiDAR data in QGIS Processing Toolbox
Start QGIS. Open Processing --> Options --> Providers --> Tools for LiDAR data. Check the Activate button and fill in the path to your local LAStools folder as shown below.
Point cloud visualization: lasview
lasview is an OpenGL-based viewer for LIDAR in LAS/LAZ/ASCII format that can also edit or delete points as well as compute/display a TIN computed from (a selection of) the points.