搜索结果: 16-30 共查到“测绘科学技术 Point clouds”相关记录124条 . 查询时间(0.109 秒)
NEW APPROACH FOR SEGMENTATION AND EXTRACTION OF SINGLE TREE FROM POINT CLOUDS DATA AND AERIAL IMAGES
Segmentation Boundary Lines 3D Model Biomass Single Tree
2016/12/1
This paper addresses a new approach for reconstructing a 3D model from single trees via Airborne Laser Scanners (ALS) data and aerial images. The approach detects and extracts single tree from ALS dat...
PROCESSING UAV AND LIDAR POINT CLOUDS IN GRASS GIS
3D rasters decimation sampling binning LAS PDAL PCL Kinect
2016/11/24
Today’s methods of acquiring Earth surface data, namely lidar and unmanned aerial vehicle (UAV) imagery, non-selectively collect or generate large amounts of points. Point clouds from different source...
AUTOMATIC GENERATION OF BUILDING MAPPING USING DIGITAL,VERTICAL AND AERIAL HIGH RESOLUTION PHOTOGRAPHS AND LIDAR POINT CLOUDS
Cartography Automatic Extraction Photogrammetry Aerial Photographs Image Segmentation
2016/11/23
The objective of this research is automatic generation of buildings in the interest areas. This research was developed by using high resolution vertical aerial photographs and the LIDAR point cloud th...
BRUTE FORCE MATCHING BETWEEN CAMERA SHOTS AND SYNTHETIC IMAGES FROM POINT CLOUDS
3D-Monoplotting Line Matching Line Extraction
2016/11/11
3D point clouds, acquired by state-of-the-art terrestrial laser scanning techniques (TLS), provide spatial information about accuracies up to several millimetres. Unfortunately, common TLS data has no...
FACETS : A CLOUDCOMPARE PLUGIN TO EXTRACT GEOLOGICAL PLANES FROM UNSTRUCTURED 3D POINT CLOUDS
geological plane dip and strike dip direction virtual outcrop unstructured 3D point clouds CloudCompare
2016/11/11
Geological planar facets (stratification, fault, joint…) are key features to unravel the tectonic history of rock outcrop or appreciate the stability of a hazardous rock cliff. Measuring their spatial...
AN AUTOMATIC ALGORITHM FOR MINIMIZING ANOMALIES AND DISCREPANCIES IN POINT CLOUDS ACQUIRED BY LASER SCANNING TECHNIQUE
Laser Scanning LiDAR Remote Sensing Point Cloud Return Intensity Edge Effect Quadtree Clustering
2016/11/11
Laser scanning technique from airborne and land platforms has been largely used for collecting 3D data in large volumes in the field of geosciences. Furthermore, the laser pulse intensity has been wid...
EXPLORING REGULARITIES FOR IMPROVING FAÇADE RECONSTRUCTION FROM POINT CLOUDS
Terrestrial LiDAR point clouds Regularities Windows Features Hierarchical clustering ICP Chain
2016/11/11
(Semi)-automatic facade reconstruction from terrestrial LiDAR point clouds is often affected by both quality of point cloud itself and imperfectness of object recognition algorithms. In this paper, we...
DERIVING 3D POINT CLOUDS FROM TERRESTRIAL PHOTOGRAPHS - COMPARISON OF DIFFERENT SENSORS AND SOFTWARE
Close-range photogrammetry structure from motion dense matching software
2016/11/11
Terrestrial photogrammetry nowadays offers a reasonably cheap, intuitive and effective approach to 3D-modelling. However, the important choice, which sensor and which software to use is not straight f...
COMBINATION OF TLS POINT CLOUDS AND 3D DATA FROM KINECT V2 SENSOR TO COMPLETE INDOOR MODELS
Data combination TLS point cloud Kinect v2 Indoor 3D modeling Building elements
2016/11/11
The combination of data coming from multiple sensors is more and more applied for remote sensing issues (multi-sensor imagery) but also in cultural heritage or robotics, since it often results in incr...
VALIDATION OF POINT CLOUDS SEGMENTATION ALGORITHMS THROUGH THEIR APPLICATION TO SEVERAL CASE STUDIES FOR INDOOR BUILDING MODELLING
3D modelling laser scanning indoor point clouds space segmentation building elements datasets
2016/11/11
Laser scanners are widely used for the modelling of existing buildings and particularly in the creation process of as-built BIM (Building Information Modelling). However, the generation of as-built BI...
QUALITY ASSESSMENT AND COMPARISON OF SMARTPHONE AND LEICA C10 LASER SCANNER BASED POINT CLOUDS
3D City Models Point Clouds Terrestrial Laser Scanning (TLS) Structure from Motion (SfM) Multi-view Photogrammetry Low-cost sensors
2016/11/11
3D urban models are valuable for urban map generation, environment monitoring, safety planning and educational purposes. For 3D measurement of urban structures, generally airborne laser scanning senso...
AN EMPRICAL POINT ERROR MODEL FOR TLS DERIVED POINT CLOUDS
TLS reflectance incidence angle range error ellipsoid anisotropic error model
2016/11/11
The random error pattern of point clouds has significant effect on the quality of final 3D model. The magnitude and distribution of random errors should be modelled numerically. This work aims at deve...
DETECTION OF SLOPE MOVEMENT BY COMPARING POINT CLOUDS CREATED BY SFM SOFTWARE
Structure from Motion ICP point cloud PCA Slope Monitoring
2016/11/11
This paper proposes movement detection method between point clouds created by SFM software, without setting any onsite georeferenced points. SfM software, like Smart3DCaputure, PhotoScan, and Pix4D, a...
INTEGRATION OF POINT CLOUDS FROM TERRESTRIAL LASER SCANNING AND IMAGE-BASED MATCHING FOR GENERATING HIGH-RESOLUTION ORTHOIMAGES
Orthoimage Terrestrial Laser Scanning Image-Based Matching Integration Image Point Clouds Cultural Heritage
2016/11/11
An orthoimage is one of the basic photogrammetric products used for architectural documentation of historical objects; recently, it has become a standard in such work. Considering the increasing popul...
AUTOMATED VOXEL MODEL FROM POINT CLOUDS FOR STRUCTURAL ANALYSIS OF CULTURAL HERITAGE
Cultural Heritage Buildings Point cloud Voxel Terrestrial laser scanning Structural analysis FEM Mesh generation
2016/11/11
In the context of cultural heritage, an accurate and comprehensive digital survey of a historical building is today essential in order to measure its geometry in detail for documentation or restoratio...