Geo Referencing Software

RiWORLDfor RIEGL Scan Data••transformation of laser scan data
into the coordinate system•of the INS••use of geometrical system•
description and calibration•
information (e.g. lever arms)••support of different formats of•
position and orientation data

Airborne and Mobile Laser Scanning Systems
provide data acquired by the laser scanner(s)anddata 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 postprocessing.
RiWORLD transforms the scan data into the coordinate system••interfacing to third party software
packagesof the trajectory, usually WGS84 (world geodetic system). It thus••smoothly integrated into RiPROCESS
task managementa geocentered coordinate system for further processing.

provides the acquired laser data of the object‘s surfaces within

In order to transform the scan data with high accuracy RiWORLDrequires an accurate geometrical system description as an input,
i.e., the transformations from the scanner system to the INS/GNSS
coordinate system, and to the vehicle body coordinate system.
The output data of RiWORLD can be described as a point
cloud in WGS84 with additional descriptors for eachpoint 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.

visit our website www.riegl.com

Ri Software

Data Acquisition with Airborne and Mobile Laser Scanning Systems
An airborne laser scanner system (ALS system) or a mobile laser
scanner system (MLS system) respectively comprises two maincomponents:
at least one laser scanner for acquiring dimensional measurements, i.e. 3D information, on the surface of the scanned objects
andan INS/GNSS (inertial navigation system andglobal navigation satellite system) subsystem for acquiring position and orientation of the platform within a global coordinate system.

Fig. 1 Principle of airborne laser scanning

RiWORLD transforms the laser scan into a global earth-centeredearth-fixed (ECEF) coordinate system (e.g. WGS84) by means of theprovided trajectory data, mounting orientation, and boresightadjustment parameters.

Fig. 1 Principle of mobile laser scanning

2RiWORLD Workflow

RiWORLD Key Features••Transformation of laser data into the coordinate system of the position •and orientation data set, usually WGS84••Makes use of geometrical system description and calibration information••Support of different formats of position and orientation data by software tool POF-Import••Compatible with different definitions of the navigation frames, e.g., east-north-up  (ENU) or
north-east-down (NED)••Provides information for subsequent transformation into a local, levelled, north-east-aligned
coordinate system for accurate visualization based on single-precision numbers••Processes a large number of files for unattended operation in batch mode••Provides different data output formats including LAS format••Smoothly integrated into RiPROCESS

3

RiWORLD System Requirements
Operating systems:

Windows XP Professional, Windows Vista Professional,
Windows 7 Professional. 32 or 64 bit operating system
Note: In case of Windows Vista and Windows 7, please ensure thatyou have up-to-date device drivers installed (especially for thegraphic card).

Memory requirements:

1024 MB RAM minimum, 2048 MB (32 bit) / 4096 MB (64 bit)or more recommended
Note: On 32 bit operating systems, RiWORLD can use up to 3 GB
RAM and on 64 bit operating systems up to 4 GB RAM.

Disk space requirements:

approximately 5 MB of free disk space for the program

RiWORLD Download Information
To download RiWORLD please navigate to http://www.riegl.com/
and click on „DOWNLOADS“.
(Download after e-mail registration only.)

RIEGL Laser Measurement Systems GmbH, 3580 Horn, Austria
Tel.: +43-2982-4211, Fax: +43-2982-4210, E-mail: office@riegl.co.at
RIEGL USA Inc., Orlando, Florida 32819, USA
Tel.: +1-407-248-9927, Fax: +1-407-248-2636, E-mail: info@rieglusa.com
RIEGL Japan Ltd., Tokyo 1640013, Japan
Tel.: +81-3-3382-7340, Fax: +81-3-3382-5843, E-mail: info@riegl-japan.co.jp

www.riegl.com
Information contained herein is believed to be accurate and reliable. However, no responsibility
is assumed by RIEGL for its use. Technical data are subject to change without notice.

Data sheet, RiWORLD, 22/09/2010