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COMPARISON WITH ACCURACY OF TERRESTRIAL LASER SCANNER BY USING POINT CLOUD ALIGNED WITH SHAPE MATCHING AND BEST FITTING METHODS
laser scanning time of flight phase shift shape matching natural distributions Ostia
2019/3/4
Recently operation systems of laser scanning have been obviously improved; for instance shape matching has been equipped with software on a post processing stage so measurement without any targets is ...
LOW-COST 3D DEVICES AND LASER SCANNERS COMPARISON FOR THE APPLICATION IN ORTHOPEDIC CENTRES
Low-cost 3D sensors Biomedical applications 3D Metrology Resolution Systematic error
2018/6/4
Low-cost 3D sensors are nowadays widely diffused and many different solutions are available on the market. Some of these devices were developed for entertaining purposes, but are used also for acquisi...
COMPARISON OF POINT CLOUD REGISTRATION ALGORITHMS FOR BETTER RESULT ASSESSMENT – TOWARDS AN OPEN-SOURCE SOLUTION
Registration Point clouds Comparison Evaluation Open-source Laser scanning Quality criteria
2018/6/4
Terrestrial and airborne laser scanning, photogrammetry and more generally 3D recording techniques are used in a wide range of applications. After recording several individual 3D datasets known in loc...
COMPARISON OF TECHNIQUES FOR TERRESTRIAL LASER SCANNING DATA GEOREFERENCING APPLIED TO 3-D MODELLING OF CULTURAL HERITAGE
Cultural Heritage Documentation, Georeferencing, Visualization, Terrestrial Laser Scanning
2015/10/8
The paper is deals with the application of terrestrial laser scanning for the generation of a 3D model of the historical settlement of
San Pietro al Monte in Civate (Lombardia, Italy). In the first ...
comparison of dem generation and combination methods using high resolution optical stereo imagery and interferometric sar data
DEM/DTM High resolution Combination Fusion Accuracy Multisensor Optical SAR
2015/9/1
Digital elevation models (DEM) from satellite data are generated mainly from two types of datasets using completely different methods: photogrammetry for optical stereo images (e.g. SPOT5, IKONOS) and...
ACCURACY OF 3D CITY MODELS: EuroSDR comparison
Laser scanning photogrammetry building extraction accuracy
2015/8/13
The paper focuses on comparing accuracies obtained with photogrammetry and laser scanning in building extraction and partly compares results obtained with various methods. The objective of the EuroSDR...
THE COLORED COMPARISON OF THE WALL SCULPTURE WITH 3D LASER SCANNER AND ORTHOPHOTO
cultural heritage restoration colored comparison laser scanning photogrammetry
2015/8/7
Now, the experts and the technician with special knowledge and professional skills have investigated the important cultural heritage
and have maintained them using traditional techniques. We are sur...
COMPARISON OF CLUSTERING TECHNIQUES APPLIED TO LASER DATA
LIDAR First and Last Pulse data Clustering Quality assessment Unsupervised learning Feature Extraction
2015/7/29
During the last decade airborne laser scanning has become a mature technology which is now widely accepted for 3D data collection.
Automated processes employ the scanned laser data and the platform ...
Comparison of working efficiency of terrestrial laser scanner in day and night conditions
ITU Civil Engineering Faculty Department of Geomatics Engineering 34469 Maslak Istanbul Turkey
2014/4/22
Terrestrial Laser Scanning is a popular and widely used technique to scan existing objects, document historical sites and items, and remodel them if and when needed. Their ability to collect thousands...
Electron-Irradiation and Photo-Excitation Darkening and Bleaching of Yb Doped Silica Fibers: Comparison
Ytterbium Doped Silica Fibers Photodarkening Electron Irradiation
2013/1/30
We report a comparative experimental study of the attenuation spectra transformations for a series of Yb doped alumino-germano silicate fibers with different contents of Yb3+ dopants, which arise as t...
Comparison of Optical Fiber Types for All-Raman Systems
Fiber optics communications Fiber optics links subsystems
2015/5/25
We experimentally explore several optical fibers for all-Raman systems. We find that while NZ-DSF with small A eff may require slightly smaller pump power, its OSNR disadvantage is approximately 5 dB ...
Comparison of Energy Consumption of Integrated Optical- Wireless Access Networks
Integrated Optical Wireless Access Network Comparison Energy Consumption
2015/5/18
A comparison of energy consumption of an integrated optical-wireless network with different wireless signal transport schemes is investigated. The results indicate that digitized RF/IF-over-fiber sche...
Techno-economic study of high–splitting ratio PONs and comparison with conventional FTTH-PONs/FTTH-P2P/ FTTB and FTTC deployments
Techno-economic FTTH-PONs/FTTH-P2P/ FTTB FTTC deployments
2015/5/15
We present a techno-economic study on the outside plant costs comparison between the standard FTTH-PON deployments with future high-splitting ratio PONs. The high-splitting ratio PONs are also compare...
Comparison of microbending loss characteristics between LMA holey fibers and conventional LMA fibers
Photonic crystal fibers Fiber design fabrication
2015/6/9
We fabricated holey fibers with effective area of 130μm 2 and 150μm 2 . Advantages of using holey fibers are demonstrated by comparing microbending loss properties with conventional step-index LMA fib...
Experimental Comparison of Nonlinear Compensation in Long-Haul PDM-QPSK Transmission at 42.7 and 85.4 Gb/s
Nonlinear Compensation Long-Haul PDM-QPSK Transmission
2015/7/20
We compare the nonlinear limits of 42.7 and 85.4 Gb/s PDM-QPSK transmission. Intra-channel nonlinearity compensation is demonstrated, with increase of optimum launch power by 1dB in each case and corr...