User profiles for Derek D. Lichti

Derek Lichti

Professor of Geomatics Engineering, The University of Calgary
Verified email at ucalgary.ca
Cited by 7262

Error modelling, calibration and analysis of an AM–CW terrestrial laser scanner system

DD Lichti - ISPRS journal of photogrammetry and remote sensing, 2007 - Elsevier
A rigorous method for terrestrial laser scanner self-calibration using a network of signalised
points is presented. Exterior orientation, object point co-ordinates and additional parameters …

Modeling terrestrial laser scanner data for precise structural deformation measurement

SJ Gordon, DD Lichti - Journal of surveying engineering, 2007 - ascelibrary.org
A modeling strategy has been developed that permits coarse-precision terrestrial laser scanner
observations to be used to accurately measure vertical deflections of deforming beams. …

Error models and propagation in directly georeferenced terrestrial laser scanner networks

DD Lichti, SJ Gordon, T Tipdecho - Journal of surveying engineering, 2005 - ascelibrary.org
Cultural heritage recording and engineering surveying are prime applications for terrestrial
laser scanners (TLSs) because of the high spatial resolution, high accuracy, and fast data …

Terrestrial laser scanner self-calibration: Correlation sources and their mitigation

DD Lichti - ISPRS Journal of Photogrammetry and Remote …, 2010 - Elsevier
Instrument calibration is recognised as an important process to assure the quality of data
captured with a terrestrial laser scanner. While the self-calibration approach can provide …

Angular resolution of terrestrial laser scanners

DD Lichti, S Jamtsho - The Photogrammetric Record, 2006 - Wiley Online Library
Abstract Knowledge of a laser scanner's spatial resolution is necessary in order to prevent
aliasing and estimate the level of detail that can be resolved from a scanned point cloud. …

Static calibration and analysis of the Velodyne HDL-64E S2 for high accuracy mobile scanning

C Glennie, DD Lichti - Remote sensing, 2010 - mdpi.com
The static calibration and analysis of the Velodyne HDL-64E S2 scanning LiDAR system is
presented and analyzed. The mathematical model for measurements for the HDL-64E S2 …

A method for automated registration of unorganised point clouds

KH Bae, DD Lichti - ISPRS Journal of Photogrammetry and Remote …, 2008 - Elsevier
A registration method for unorganised point cloud datasets, the Geometric Primitive ICP with
the RANSAC (GP-ICPR), which uses geometric primitives, neighbourhood search and the …

[PDF][PDF] Experiences with terrestrial laser scanner modelling and accuracy assessment

DD Lichti, MG Licht - Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci, 2006 - Citeseer
This paper presents advances in terrestrial laser scanner systematic error modelling and self-calibration.
The error model consists of 19 additional parameters grouped into two …

[PDF][PDF] Classification and segmentation of terrestrial laser scanner point clouds using local variance information

D Belton, DD Lichti - Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci, 2006 - isprs.org
With the use of terrestrial laser scanning, it is possible to capture thousands of 3-dimensional
points on the surface of an object. The problem is that the vast quantity of data that needs to …

[PDF][PDF] The effects of reflecting surface material properties on time-of-flight laser scanner measurements

DD Lichti, BR Harvey - Proceedings of the Symposium on Geospatial …, 2002 - Citeseer
Terrestrial laser scanners, such as the Cyrax 2500 and its predecessor the 2400, use pulsed
laser ranging and rotating mirrors to accurately measure dense sets of three-dimensional co…