Development of a time-of-flight laser scanning system for underwater applications

2019 ◽  
Author(s):  
Simon Stemmler ◽  
Christoph S. Werner ◽  
Alexander Reiterer
Keyword(s):  
Laser Scanning ◽  
Time Of Flight ◽  
Scanning System ◽  
Laser Scanning System

scholarly journals Comparison of Time-of-Flight and Phase-Shift TLS Intensity Data for the Diagnostics Measurements of Buildings

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 353 ◽  
Author(s):  
Czesław Suchocki
Keyword(s):  
Phase Shift ◽  
Point Cloud ◽  
Laser Scanning ◽  
Time Of Flight ◽  
Chemical Properties ◽  
Scanning System ◽  
Intensity Data ◽  
Building Walls ◽  
Multiple Samples ◽  
Laser Scanning System

In recent years, the terrestrial laser scanning system (TLS) has become one of the most popular remote and nondestructive testing (NDT) methods for diagnostic measurements of buildings and structures as well as for the assessment of architectural heritage. Apart from 3D coordinates, the power of a laser beam backscattered from the scanned object can be captured by TLS. The radiometric information of the point cloud, called “intensity”, can provide information about changes in the physio–chemical properties of the scanned surface. This intensity can be effectively used to detect defects in the surfaces of walls, such as cracks and cavities, moisture, biodeterioration (mosses and lichens) or weathered parts of the wall. Manufacturers of TLS mainly use two different principles for distance measurement, time-of-flight (TOF) and phase-shift (PS). The power of energy in both types of rangefinders might be absorbed or reflected in a slightly different way and provide more or less detailed radiometric point cloud information. The main aim of this investigation is to compare TOF and PS scanners in the context of using TLS intensity data for the diagnostics of buildings and other structures. The potential of TLS intensity data for detecting defects in building walls has been tested on multiple samples by two TOF (Riegl VZ400i, Leica ScanStation C10) and two PS (Z + F 5016 IMAGER, Faro Focus3D) scanners.

DEFECT DETECTION AND QUALITY ASSESSMENT OF HARDWOOD LOGS:PART 2—COMBINED ACOUSTIC AND LASER SCANNING SYSTEM

2018 ◽  
Vol 50 (3) ◽  
pp. 310-322 ◽  
Author(s):  
Xiping Wang ◽  
Ed Thomas ◽  
Feng Xu ◽  
Yunfei Liu ◽  
Brian K Brashaw ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Defect Detection ◽  
Laser Scanning ◽  
Scanning System ◽  
Laser Scanning System

Underwater laser scanning system

1991 ◽  
Author(s):  
Roswell W. Austin ◽  
Seibert Q. Duntley ◽  
Richard L. Ensminger ◽  
Theodore J. Petzold ◽  
Raymond C. Smith
Keyword(s):  
Laser Scanning ◽  
Scanning System ◽  
Underwater Laser ◽  
Laser Scanning System

1255 poster PATIENT MONITORING DURING TREATMENT USING SENTINEL LASER SCANNING SYSTEM

2011 ◽  
Vol 99 ◽  
pp. S467
Author(s):  
C. Thornberg ◽  
M. Krantz ◽  
F. Nordström ◽  
R. Ljungqvist ◽  
S. Bäck
Keyword(s):  
Laser Scanning ◽  
Patient Monitoring ◽  
Scanning System ◽  
Laser Scanning System
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