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TUNNEL POINT CLOUD FILTERING METHOD BASED ON ELLIPTIC CYLINDRICAL MODEL
Elliptic Cylindrical Model Point Cloud Filtering Tunnel Central Axis Non-points Regional Segmentation
2016/7/5
The large number of bolts and screws that attached to the subway shield ring plates, along with the great amount of accessories of metal stents and electrical equipments mounted on the tunnel walls, m...
Applying two dimensional Kalman Filtering for Digital Terrain Modelling
Applying two dimensional Kalman Filtering Digital Terrain Modelling
2016/5/23
Digital Elevation Models (DEMs) have been increasingly used to model the terrain surfaces to provide the 'physical bases' for environmental studies. However, DEM is subject to systematic errors, rando...
ADAPTIVE FILTERING OF AERIAL LASER SCANNING DATA
LIDAR Classification Algorithms DEM/DTM Automation
2015/11/10
Filtering non-terrain points from raw laser scanning data is the most important goal to improve productivity in DTM generation.Filtering algorithms are built on assumptions about what discriminates te...
Revealing celtic fields from LIDAR data using Kriging based filtering
LIDAR archaeology ltering geostatistics
2015/8/25
A detailed elevation model of the Netherlands has been acquired with the use of Airborne Laser Altimetry and is managed by AHN(Actueel Hoogtebestand Nederland). This elevation model can be used for a ...
Filtering of Laser Scanning Data in Forest Areas using Finite Elements
Laser scanning Finite elements TIN robust adjustment
2015/5/26
During the last decade laser scanning turned out to be one of the most promising techniques in photogrammetry. Some
photogrammetrists even say that laser scanning has caused a paradigm change in pho...
The filtering of a digital situation model (DSM) containing points located on vegetation and buildings to a digital height model
(DHM) is depending upon the structure of the objects not belonging to...
Classification and Filtering of Laser Data
LIDAR Classification Algorithms DEM/DTM Automation
2015/5/26
A strategy for the classification of raw LIDAR data as terrain, buildings and vegetation is presented. Its main features are a
preliminary classification of grid data based on a geometric and topolog...
To determine the performance of filtering algorithms a study was conducted in which eight groups filtered data supplied to them. The
study aimed to determine the general performance of filters, the i...
A FILTERING METHOD OF AIRBORNE LASER SCANNER DATA FOR COMPLEX TERRAIN
Laser scanning LIDAR DEM/DTM
2015/3/24
A new filtering method of airborne laser scanner data has been developed that is suitable for complex terrain, that is flat but with
artificial depression such as openings of underground tunnels, ty...
THE IMPACT OF FILTERING ON SPATIAL CONTINUOUS QUERIES
FILTERING ON SPATIAL CONTINUOUS QUERIES
2015/3/16
THE IMPACT OF FILTERING ON SPATIAL CONTINUOUS QUERIES.