搜索结果: 1-7 共查到“信息与通信工程 ALS”相关记录7条 . 查询时间(0.014 秒)
Quality checking of ALS Projects Using Statistics of Strip Differences
LIDAR Laser scanning Analysis Inspection Accuracy Quality
2015/12/8
We present an automatic method for checking the geometric accuracy of ALS points. First for each strip a DEM is interpolated using the moving planes method. The accuracy of the interpolated height at ...
Comparison of Tree Extraction from Intensity Drop and From Multiple Returns in ALS Data
LIDAR data Tree extraction Airborne Laser Scanner Three dimensional Intensity Drop Multiple Returns
2015/11/20
LIDAR is an application widely open as an area of study for modelling detailed topographic maps. It is generally used in airborne applications. In this study, the aim is tree extraction from a data ha...
VERTICAL VEGETATION STRUCTURE ANALYSIS AND HYDRAULIC ROUGHNESS DETERMINATION USING DENSE ALS POINT CLOUD DATA - A VOXEL BASED APPROACH
surface roughness hydraulic simulation Manning's n land cover full-waveform LiDAR
2014/6/5
In this contribution the complexity of the vertical vegetation structure, based on dense airborne laser scanning (ALS) point cloud data (25 echoes/m2 ), is analyzed to calculate vegetation roughness f...
CALIBRATION OF FULL-WAVEFORM ALS DATA BASED ON ROBUST INCIDENCE ANGLE ESTIMATION
ALS, Full-waveform Calibration Analysis Modelling Segmentation
2014/6/5
Full-waveform airborne laser scanning data has shown its potential to enhance available segmentation and classification approaches through the additional information it can provide. However, this addi...
PATHWAY DETECTION AND GEOMETRICAL DESCRIPTION FROM ALS DATA IN FORESTED MOUNTANEOUS AREA
lidar road feature extraction vectorization mapping mountainous areas
2016/2/29
In the last decade, airborne laser scanning (ALS) systems have become an alternative source for the acquisition of altimeter data.
Compared to high resolution orthoimages, one of the main advantages ...
COMBINATION OF LOW-PULSE ALS DATA AND TERRASAR-X RADAR IMAGES IN THE ESTIMATION OF PLOT-LEVEL FOREST VARIABLES
Forest inventory Forest planning Laser scanning Radar imaging
2016/2/29
In the present study, the objective was to compare the accuracy of low-pulse airborne laser scanning (ALS), high-resolution
noninterferometric TerraSAR-X (TSX) radar data and their combined feature s...
APPLIED 3D TEXTURE FEATURES IN ALS-BASED TREE SPECIES SEGMENTATION
lidar Segmentation Tree species classification Alpha shape 3D texture
2015/11/16
Airborne laser scanning (ALS) data are usually considered not to be very informative with respect to tree species, and the
information needed regarding these is often obtained by combining the ALS d...