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COMPARING THE PERFORMANCE OF POINT CLOUD REGISTRATION METHODS FOR LANDSLIDE MONITORING USING MOBILE LASER SCANNING DATA
point clouds, registration methods landslide monitoring mobile laser scanning deviation maps
2018/10/26
The aim of the research is to evaluate the performance of the point cloud registration methods using mobile laser scanning data. The point cloud registration methods involved in this research are matc...
STITCHING TYPE LARGE APERTURE DEPOLARIZER FOR GAS MONITORING IMAGING SPECTROMETER
Polarization Depolarizer Muller matrix Imaging Spectrometer Stitching Numerical Analysis
2018/4/30
To increase the accuracy of radiation measurement for gas monitoring imaging spectrometer, it is necessary to achieve high levels of depolarization of the incoming beam. The preferred method in space ...
OPTO-TECHNICAL MONITORING – A STANDARDIZED METHODOLOGY TO ASSESS THE TREATMENT OF HISTORICAL STONE SURFACES
Monitoring Cultural Heritage 3D Scanning UV-VIS-IR photography Preservation Sciences Non-Destructive Testing Methods
2018/3/30
Monitoring is an essential requirement for the planning, assessment and evaluation of conservation measures. It should be based on a standardized and reproducible observation of the historical surface...
MONITORING OF PROGRESSIVE DAMAGE IN BUILDINGS USING LASER SCAN DATA
Change monitoring unreinforced masonry building LiDAR point cloud post-disaster
2018/3/30
Vulnerability of buildings to natural and man-induced hazards has become a main concern for our society. Ensuring their serviceability, safety and sustainability is of vital importance and the main re...
HIGH QUALITY DEMS FOR GLACIER MONITORING –IMAGE MATCHING VERSUS LASER SCANNING
Glaciology Matching Laser Scanning DEM/DTM Comparison
2015/7/29
Glacier monitoring is of great importance since glaciers are influencing essential areas of life like water supply, energy production,
flood protection and tourism. Furthermore, the variation of gla...
Monitoring marginal erosion in hydroelectric reservoirs with terrestrial mobile laser scanner
Mobile terrestrial laser scanner Monitoring LIDAR Point Cloud
2014/6/30
Marginal erosions in reservoirs of hydroelectric plants have caused economic and environmental problems concerning hydroelectric power generation, reduction of productive areas and devaluing land parc...
Extracting Rail Track Geometry from Static Terrestrial Laser Scans for Monitoring Purposes
Terrestrial laser scanning (TLS) static deformation monitoring rail track geometry extraction
2014/6/30
This paper presents the capabilities of detecting relevant geometry of railway track for monitoring purposes from static terrestrial laser scanning (TLS) systems at platform level. The quality of the ...
3D Case Studies of Monitoring Dynamic Structural Tests using Long Exposure Imagery
Vibration Engineering Monitoring Long Exposure Imagery Image Processing Close Range Photogrammetry
2014/6/30
Structural health monitoring uses non-destructive testing programmes to detect long-term degradation phenomena in civil engineering structures. Structural testing may also be carried out to assess a s...
Real Time Monitoring of Fluorescent Particles in Micro-Channels by High Resolution Dual Modality Probe Imaging
Microscopy Image Fiber Spectrophotometer Microchannel
2011/12/5
Imaging of micro particles in micro-fluidic channels is one of the recent thrust areas in research as it provides more flexibility in setup and analysis compared to conventional microscopy. However, a...
Characterization and Monitoring of Laser Linewidths in Coherent Optical OFDM Systems
Fiber optics communications Modulation
2011/5/26
We demonstrate monitoring of digitally-generated laser linewidths for 107-Gb/s coherent optical OFDM systems. Unique characteristics of time-domain phase-error variance are exploited to extract laser ...
Second-Order PMD Monitoring from Adaptive FIR-Filter Tap Coefficients in a Digital Coherent Receiver
Fiber optic communication Coherent communications Homodyning
2011/5/26
We propose a straightforward algorithm to estimate second-order PMD from adaptive FIR-filter tap coefficients in a digital coherent optical receiver. The novel algorithm is verified with 100-Gbit/s du...
Real-Time Ultra-broadband Group Delay Monitoring through Quasi-Incoherent Processing
Fiber Bragg gratings Fiber optics communications Fiber optics components Bragg reflectors Dispersion compensation devices
2011/5/25
Simple method for real-time ultra-broadband group delay measurement of photonic devices is reported, demonstrating accurate group delay ripple monitoring of a 10m-long chirped fiber grating over the f...
Monitoring of Orthogonal Polarization Power Ratio due to PDL using Intensity Tones in Polarization Multiplexed Signals
Fiber optics communications Fiber optics links subsystems
2011/5/25
We demonstrate a technique for monitoring orthogonal polarization power ratio (OPPR) occurring in WDM polarization-multiplexed signals due to PDL. We employ low-frequency intensity tones to estimate t...
OSNR monitoring of a 1.28 Tbit/s signal using a reconfigurable Wavelength Selective Switch
OSNR monitoring reconfigurable Wavelength Selective Switch
2011/5/25
We demonstrate in-band optical signal to noise monitoring of an 1.28 Tbit/s signal by implementing an interferometer inside a reconfigurable wavelength selective switch based on liquid crystal on sili...
Optical Processing for Performance Monitoring
Nonlinear optical signal processing Nonlinear optical devices
2011/5/25
We review recent experiments of waveform spectrum analysis by the nonlinear Kerr effect, and its application to multi-impairment monitoring of optical signals. The measurement of 640 Gb/s signals via ...