搜索结果: 1-15 共查到“工学 ALS”相关记录20条 . 查询时间(0.097 秒)
科技日报北京2021年12月29日电 （记者张梦然）据物理学家组织网近日报道，澳大利亚62岁的肌萎缩侧索硬化症（ALS）患者菲利普·奥基夫最近成为第一个仅用自己的想法在社交媒体上发布消息的人。12月23日，他在推特上发布了一条简短的消息“你好，世界”（Hello World）。
3D SEMANTIC LABELING OF ALS DATA BASED ON DOMAIN ADAPTION BY TRANSFERRING AND FUSING RANDOM FOREST MODELS
3D semantic labelling ALS data random forest domain adaption decision fusion
2018/5/15
Labeling 3D point cloud data with traditional supervised learning methods requires considerable labelled samples, the collection of which is cost and time expensive. This work focuses on adopting doma...
COMPARISON BETWEEN AN AREA-BASED AND INDIVIDUAL TREE DETECTION METHOD FOR LOW-PULSE DENSITY ALS-BASED FOREST INVENTORY
Forest inventory Laser scanning k-NN Individual tree detection Accuracy
2016/2/29
Airborne laser scanning (ALS)-based forest inventories are being increasingly used. The two main approaches in deriving forest
information from small-footprint laser scanner data are the area-based a...
ADAPTATION OF ROADS TO ALS DATA BY MEANS OF NETWORK SNAKES
snakes networks vector data roads ALS intensity topology consistency
2016/2/29
In the Authoritative Topographic Cartographic Information System (ATKIS®), which is the main public topographic data base in
Germany, the heights and the 2D positions of objects such as roads a...
BUILDING EXTRACTION FROM ALS DATA BASED ON REGULAR AND IRREGULAR TESSELLATIONS
LIDAR Extraction Detection Building TIN GRID
2015/12/23
For the past dozen years, data which enable the use of Digital Terrain Model as well as Digital Surface Model have been widely used. One of the modern techniques of gaining information about terrain i...
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...
RECOVERING PLOT-SPECIFIC DIAMETER DISTRIBUTION AND HEIGHTDIAMETER CURVE USING ALS BASED STAND CHARACTERISTICS
Airborne laser scanning forest inventory Weibull Korf Scots pine
2015/11/10
Density, diameter distribution and height-diameter (H-D) pattern of a forest stand are of primary importance in deriving various stand characteristics, but measuring diameters and heights of a tree st...
EXPERIENCES AND POSSIBILITIES OF ALS BASED FOREST INVENTORY IN FINLAND
remote sensing forestry inventory modelling prediction recognition lidar accuracy
2015/11/10
During last ten years the research concerning airborne laser scanning based forest inventory applications has been very active in different parts of the world. In Finland, both basic approaches, singl...
RADIOMETRIC CALIBRATION OF ALS INTENSITY
Laser Scanning Radiometric Calibration Laboratory Measurements
2015/11/10
We have developed a new concept of empirical calibration scheme for airborne laser scanner (ALS) intensity by means of portablebrightness calibration targets, which can be laid out in the flight targe...
ALS and TLS data fusion in cultural heritage documentation and modeling
Airborne Laser Scanning Data Fusion Accuracy
2015/9/11
One of the most important aspects of documenting cultural heritage sites is acquiring detailed and accurate data. A popular method
of storing 3D information about historical structures is using 3D mo...
Accurate Registration of Als Data without Control Points
registration algorithms laser scanning
2015/7/9
This paper demonstrates the use of a matching algorithm to register an ALS data set to a reference surface composed
of ground points obtained using kinematic stop-and-go GPS. The matching algorithm m...
Die Photogrammetrie als Hilfsmittel zum Aufbau eines Modernen Vermessungs- und Kartenwerkes in Stadtischen Siedlungsgebieten
Photogrammétrie Hilfsmittel zum Aufbau eines Modernen Vermessungs Kartenwerkes Stadtischen Siedlungsgebieten
2015/1/4
Die Photogrammetrie als Hilfsmittel zum Aufbau eines Modernen Vermessungs- und Kartenwerkes in Stadtischen Siedlungsgebieten.
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...