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COMPARATIVE GEOMETRICAL ACCURACY INVESTIGATIONS OF HAND-HELD 3D SCANNING SYSTEMS – AN UPDATE
3D mesh point cloud reference structured light systems VDI/VDE
2018/6/4
Hand-held 3D scanning systems are increasingly available on the market from several system manufacturers. These systems are deployed for 3D recording of objects with different size in diverse applicat...
DIGITAL PHOTOGRAMMETRY FOR THE GEOMETRICAL ANALYSIS OF THE UMBRELLA-SHAPED DOME IN BAIA (NAPLES)
Heritage geometrical analysis Baia dome photogrammetry
2018/6/4
This paper is focused on the use of photogrammetric measurement techniques for the valorization of architectural and archaeological heritage. The functionality of this system allows operating with unf...
ACQUISION OF GEOMETRICAL DATA OF SMALL RIVERS WITH AN UNMANNED WATER VEHICLE
Unmanned Water Vehicle Multi-sensor Platform Mobile Mapping Lidar Echo Sounder Flash Flood
2018/6/5
Rivers with small- and medium-scaled catchments have been increasingly affected by extreme events, i.e. flash floods, in the last years. New methods to describe and predict these events are developed ...
A GEOMETRICAL SIMILARITY PATTERN AS AN EXPERIMENTAL MODEL FOR SHAPES IN ARCHITECTURAL HERITAGE: A CASE STUDY OF THE BASE OF THE PILLARS IN THE CATHEDRAL OF SEVILLE AND THE CHURCH OF SANTIAGO IN JEREZ, SPAIN
Geometrical similarity pattern 3D range scanning
2017/4/10
This paper proposes a procedure for the search of a geometrical similarity pattern in architectural heritage by means of calculating probability indexes to support hypotheses initially endorsed by doc...
AN AUTOMATED GRASS-BASED PROCEDURE TO ASSESS THE GEOMETRICAL ACCURACY OF THE OPENSTREETMAP PARIS ROAD NETWORK
Accuracy FOSS4G GRASS Open data OpenStreetMap Road network Volunteered Geographic Information
2016/11/24
OpenStreetMap (OSM) is the largest spatial database of the world. One of the most frequently occurring geospatial elements within this database is the road network, whose quality is crucial for applic...
COMPARATIVE GEOMETRICAL INVESTIGATIONS OF HAND-HELD SCANNING SYSTEMS
3D comparison image matching mesh modelling point cloud sensor structure-from-motion structured light
2016/11/11
An increasing number of hand-held scanning systems by different manufacturers are becoming available on the market. However, their geometrical performance is little-known to many users. Therefore the ...
PERCEPTUALLY GUIDED GEOMETRICAL PRIMITIVE LOCATION METHOD FOR 3D COMPLEX BUILDING SIMPLIFICATION
3D complex building Geometrical primitive location Human vision system
2016/2/29
Because of detailed geometrical components based description, 3D complex building contains the most elaborated perceptual and
comprehensive semantic information. However, since the lack of optimal si...
GEOMETRICAL AND STRUCTURAL PARAMETERIZATION OF FOREST CANOPY RADIATIVE TRANSFER BY LIDAR MEASUREMENTS
Remote Sensing Forestry LIDAR Vegetation Modelling Structure
2015/12/30
A forest canopy is a complex system with a highly structural multi-scale architecture. Physical based radiative transfer (RT) modelling has been shown to be an effective tool for retrieval of vegetati...
Geometrical Transformation of Nautical Charts in Greenland
Nautical Charts Transformation Kriging
2015/12/16
We present an algorithm for transformation and reconstruction of nautical charts, based on identification of common points in new orthophotos and old charts. The algorithm shows to be implementa...
Process Line for Geometrical Image Correction of Disruptive Microvibrations
Image processing Correlation Integration Rectification
2015/11/20
Since the beginning of earth observation satellites the dynamic disturbances have a strong impact on satellite design. During satellite conception and realisation, they are closely analysed, often wit...
GEOMETRICAL ASPECTS OF AIRBORNE LASER SCANNING AND TERRESTRIAL LASER SCANNING
Airborne Laser Scanning Terrestrial Laser Scanning LiDAR Geometry Orientation Registration Segmentation Calibration Digital Terrain Model DTM
2015/11/10
This paper reviews the current state of laser scanning from airborne and terrestrial platforms for geometric reconstruction of object shape and size. The current performance figures of sensor systems ...
On the relationship between the geometrical control of scintillation indices and the data detrending problems observed at high latitudes
ionospheric scintillation GPS scintillation monitors scintillation indices
2015/9/2
The experimental estimate of radio waves scintillation, caused by plasma density irregularities in the ionosphere, is usually attempted by means of scintillation indices which are essentially standard...
In several recent reports, we have explained the frequency dependence of the apparent seismic quality-factor (Q) observed in many studies according to the effects of geometrical attenuation, which was...
Geometrical correction of satellite images by generic models
Generic Models Geometrical Corrections Rational Function
2015/8/20
Dynamism of satellite images of linear array leads to complexity of execution of one accurate algorithm for real time positioning
which needs information of satellite orbits.
In other hand vendors o...
Investigating of geometrical and asymptotical properties of hyperspectral data for discriminant analysis
Hyperspectral Feature extraction Discriminant analysis
2015/8/20
Hyperspectral images provide abundant information about objects. The high dimensionality of such images arise various problems
such as curse of dimensionality and large hypothesis space. There are tw...