Aerial point clouds recorded by LiDAR (Light Detection And Ranging) sensors provide valuable information about the earth’s surface, including the signature of cities. The emitted laser pulse is utilized to measure the distance between a target and the sensor platform and is able to describe the height of scanned objects. Furthermore, details about intensity and the number of returns are stored in the data sets. Frequently, LiDAR data are analyzed in combination with optical imagery in order to perform precise city mapping. For various reasons of data limitation this isn’t always possible.
Tama Group offers an application for extraction of objects in a city, based solely on laser scanning point clouds.