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Airborne and mobile laser scanning systems provide data acquired by the laser scanner(s) and data from an INS/GNSS system. The laser scanner data is frequently referred to as scan data, whereas the INS/GNSS data or position and orientation data is called in short trajectory data after post-processing.
RiWORLD transforms the scan data into the coordinate system of the trajectory, usually WGS84 (world geodetic system). It thus provides the acquired laser data of the object's surfaces within a geocentered coordinate system for further processing.
In order to transform the scan data with high accuracy, RiWORLD applies accurate geometrical system descriptions as input, i.e., the transformations from the scanner system to the IMU/GNSS coordinate system, and to the vehicle body coordinate system. The output data of RiWORLD represents a point cloud in WGS84 with additional descriptors for each point such as amplitude of echo return, target reflectance, echo pulse width, pre-classification, and more. RiWORLD is smoothly integrated into the project-oriented processing software RiPROCESS via the application server RiSERVER.
Transformation of laser data into the coordinate system of the trajectory, position and orientation data set
Interfacing to third party software packages
Provides information for subsequent transformation into a local, levelled, north-east-aligned coordinate system for accurate visualization
Processes a large number of files for unattended operation in batch mode
Provides different data output formats including LAS format
Smoothly integrated into RiPROCESS project management software
Use of geometrical system description and calibration information (lever arms)
Support of different formats of position and orientation data
Compatible with different definitions of the navigation frames