搜索结果: 61-75 共查到“测绘科学技术 Point clouds”相关记录124条 . 查询时间(0.192 秒)
Vectorization, Edge Preserving Smoothing and Dimensioning of Profiles in Laser Scanner Point Clouds
Laser scanning Edge preserving smoothing Profile
2015/12/16
The 3D geometry of an object can be captured very efficiently using a terrestrial laser scanner. By modelling and visualisation of
these 3D data, it is possible to obtain vectorized geometric informa...
Improving and Extending the Information on Principal Component Analysis for Local Neighborhoods in 3D Point Clouds
Laser Scanning Point clouds Curvature Approximation
2015/12/16
Principal Component Analysis (PCA) is often utilised in point cloud processing as provides an efficient method to approximate local
point properties through the examination of the local neighbourhood...
Glacier Velocity Determination from Multi-Temporal Long Range Laser Scanner Point Clouds
Motion analysis glaciology LIDAR sequences
2015/12/16
Research on the motion behaviour of arctic glaciers provides important information about the influence of global temperature
changes on the climate system and especially the global sea level rise. In...
AUOTOMATIC CLASSIFICATION OF POINT CLOUDS EXTRACTED FROM ULTRACAM STEREO IMAGES
Point Clouds Ultracam Images point’s classification clustering non-ground points DEM
2016/1/15
Automatic extraction of building roofs, street and vegetation are a prerequisite for many GIS (Geographic Information System) applications, such as urban planning and 3D building reconstruction. Nowad...
Rapid Extracting Pillars by Slicing Point Clouds
Terrestrial Laser Scanner Point Cloud Cultural Heritage Feature Extraction
2015/12/8
Terrestrial Laser scanner (TLS) has been widely used in our recent architectural heritage projects and huge quantity of point cloud data was gotten. In order to process the huge quantity of point clou...
Registration of Airborne Laser Scanning Point Clouds with Aerial Images through Terrestrial Image Blocks
Laser scanning Aerial Image Terrestrial Photogrammetry
2015/11/20
Integration of airborne laser scanning (ALS) point clouds and aerial images has a great potential for accurate and robust 3D modeling and recognition of objects in our environment. The integration req...
HIERARCHICAL CLUSTERED OUTLIER DETECTION IN LASER SCANNER POINT CLOUDS
Point cloud Laser Scanner Outlier detection EMST Gabriel graph Clustering
2015/11/10
Cleaning laser scanner point clouds from erroneous measurements (outliers) is one of the most time consuming tasks that has to be done before modeling. There are algorithms for outlier detection in di...
FROM POINT CLOUD TO SURFACE:MODELING STRUCTURES IN LASER SCANNER POINT CLOUDS
Laserscanning Photogrammetry Feature Extraction Segmentation Modeling Software Development
2015/11/10
The automatic modeling of precise structures from randomly distributed laser points derived from laser scanner data is a very hard problem, not completely solved and problematic in case of incomplete,...
TREE DETECTION AND DIAMETER ESTIMATIONS BY ANALYSIS OF FOREST TERRESTRIAL LASERSCANNER POINT CLOUDS
Terrestrial laserscanning point cloud segmentation automation forest inventory diameters along the stem
2015/11/10
Forest inventory schemes collect, besides tree species and some area parameters, geometric tree parameters such as diameter at breast height (DBH), tree height, stem profiles, azimuth and distance. Fo...
Generative Models and Markov Chain Monte Carlo Techniques for Detection and Reconstruction of Stairs from 2D Point Clouds
Building Stairs Detection Reconstruction Markov Chain Monte Carlo MAP Estimation Generative Model Point Cloud
2015/10/12
The paper describes an approach for the automatical reconstruction of homogeneous straight stairs from point cloud data by using a
generative model and Markov Chain Monte Carlo techniques for estima...
A SEMI-AUTOMATIC PROCEDURE FOR TEXTURING OF LASER SCANNING POINT CLOUDS WITH GOOGLE STREETVIEW IMAGES
Point Clouds Terrestrial Laser Scanning Structure from Motion (SfM) Texturing Google Streetview
2015/9/21
We introduce a method to texture 3D urban models with photographs that even works for Google Streetview images and can be done with currently available free software. This allows realistic texturing, ...
DISTRIBUTED DIMENSONALITY-BASED RENDERING OF LIDAR POINT CLOUDS
DISTRIBUTED DIMENSIONALITY-BASED RENDERING LIDAR POINT CLOUDS
2015/9/21
Mobile Mapping Systems (MMS) are now commonly acquiring lidar scans of urban environments for an increasing number of applications such as 3D reconstruction and mapping, urban planning, urban furnitur...
INTEGRATING TERRESTRIAL LIDAR WITH POINT CLOUDS CREATED FROM UNMANNED AERIAL VEHICLE IMAGERY
Unmanned Aerial Vehicle Terrestrial LiDAR Point Cloud Data Fusion
2015/9/10
Using unmanned aerial vehicles (UAV) for the purposes of conducting high-accuracy aerial surveying has become a hot topic over the last year. One of the most promising means of conducting such a surve...
assessment and comparison of registration algorithms between aerial images and laser point clouds
Registration LiDAR Photogrammetry Fusion Laser Point Cloud DEM Matching
2015/9/1
Photogrammetry, has been providing accurate coordinate measurements through the stereoscopic method for many years. LiDAR on the other hand, is becoming the prime method for large-scale acquisition of...
EXTRACTION OF LINES FROM LASER POINT CLOUDS
Laser data 3D point clouds covariance of points edge detection line generation eigenvalues eigenvectors momentum of inertia segmentation
2015/8/31
Three dimensional building models have become important during the past for various applications like urban planning, enhanced navigation or visualization of touristy or historic objects. 3D models ca...