Results 31 to 40 of about 1,584,735 (291)

PERSPECTIVE INTENSITY IMAGES FOR CO-REGISTRATION OF TERRESTRIAL LASER SCANNER AND DIGITAL CAMERA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Co-registration of terrestrial laser scanner and digital camera has been an important topic of research, since reconstruction of visually appealing and measurable models of the scanned objects can be achieved by using both point clouds and digital images.
Y. Liang   +5 more
doaj   +1 more source

Estimation of stem attributes using a combination of terrestrial and airborne laser scanning [PDF]

open access: yes, 2012
Properties of individual trees can be estimated from airborne laser scanning (ALS) data provided that the scanning is dense enough and the positions of field-measured trees are available as training data.
Olofsson, Kenneth   +3 more
core   +1 more source

TERRESTRIAL LASER SCANNER FOR MONITORING THE DEFORMATIONS AND THE DAMAGES OF BUILDINGS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Abstract. scanner provides the ability to detect the geometric 3D model of a building without any physical contact with the structure. Knowledge of the 3D model will give the opportunity to study the deformation and quantify the damages. Three case studies are presented relating to damaged and/or unsafe buildings: Sivillier Castle (Villasor - Sardinia-
VACCA, GIUSEPPINA   +3 more
openaire   +5 more sources

Analysis and correction of the dependency between laser scanner intensity values and range [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Intensity values, which are registered by a terrestrial laser scanner system (TLS) for each point of a 3D point cloud in addition to its coordinates, are affected by the characteristic of the measured object and the parameters of the environment.
R. Blaskow, D. Schneider
doaj   +1 more source

Interactive Trunk Extraction from Forest Point Cloud [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
For forest management or monitoring, it is required to constantly measure several parameters of each tree, such as height, diameter at breast height, and trunk volume.
T. Mizoguchi, Y. Kobayashi
doaj   +1 more source

Performance evaluation of terrestrial laser scanners—a review

open access: yesMeasurement Science and Technology, 2021
Abstract Terrestrial laser scanners (TLSs) are increasingly used in several applications such as reverse engineering, digital reconstruction of historical monuments, geodesy and surveying, deformation monitoring of structures, forensic crime scene preservation, manufacturing and assembly of engineering components, and architectural ...
openaire   +3 more sources

Evaluation of the dynamics of change of shore cliff located in the vicinity of Pleśna village in the period 2006-2015 [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2016
Climate changes on our planet contribute to the rise in the average level of the seas, oceans, and a greater number of storms. It causes an increasing process of the sea abrasion on the cliffs.
Czesław Suchocki   +3 more
doaj   +1 more source

Uncertainty Assessment in Terrestrial Laser Scanner Measurements

open access: yesKey Engineering Materials, 2014
Abstract. The essential purpose of this study is to develop the measurement procedures in order toevaluate the quality of the observations carried out using Terrestrial Laser Scanner (TLS) equipment.It tries, in addition, to estimate an uncertainty value that allows the users to know the reliability of theinstrument measurements.
García Pallero, José Luis   +1 more
openaire   +2 more sources

Quantitative evaluation of scaling factor on coordinate transformation for time-of-flight terrestrial laser scanner [PDF]

open access: yes, 2019
Terrestrial laser scanning is a new approach in three-dimensional measurement. Since the acquisition of terrestrial laser scanner data requires multiple scanning stations to complete the data of a scanned object, the coordinate transformation process is ...
Hashim, N. M.   +21 more
core   +1 more source

Comparing Three Different Ground Based Laser Scanning Methods for Tree Stem Detection

open access: yesRemote Sensing, 2018
A forest inventory is often carried out using airborne laser data combined with ground measured reference data. Traditionally, the ground reference data have been collected manually with a caliper combined with land surveying equipment.
Ivar Oveland   +4 more
doaj   +1 more source

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