Point clouds

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Ground Extraction from 3D Lidar Point Clouds

Ground Extraction from 3D Lidar Point Clouds

... Abstract— Ground extraction from three-dimensional (3D) range data is a relevant problem for outdoor navigation of unmanned ground vehicles. Even if this problem has received attention with specific heuristics and ...

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3D Maize Plant Reconstruction Based on Georeferenced Overlapping LiDAR Point Clouds

3D Maize Plant Reconstruction Based on Georeferenced Overlapping LiDAR Point Clouds

... LiDAR point clouds with different angles and timestamps provided by a moving on autonomous vehicle, and a complex multistep algorithm for data ...For point cloud overlapping, a filtering process was ...

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Towards the automatic 3D parametrization of non-planar surfaces from point clouds in HBIM applications

Towards the automatic 3D parametrization of non-planar surfaces from point clouds in HBIM applications

... features and multi-encounter primitive situations. The trials were conducted on a Windows 10, Intel(R) Core i5 3470@3.2 GHz CPU with 16GB of memory. The processing time spent on each reconstruction step and the parameter ...

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Análisis y visualización de nubes de puntos LiDAR en InternetAnalysis and visualization of LiDAR point clouds over internet

Análisis y visualización de nubes de puntos LiDAR en InternetAnalysis and visualization of LiDAR point clouds over internet

... LiDAR technology has ventured into remote sensing technologies to become one of the best options to provide efficient and accurate data in the field of topographic mapping. Its main advantage is that it provides 3D ...

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Morphological Operations to Extract Urban Curbs in 3D MLS Point Clouds

Morphological Operations to Extract Urban Curbs in 3D MLS Point Clouds

... Laser scanner sensors and stereo vision systems provide fast and accurate three-dimensional (3D) information on objects, buildings, and landscapes without maintaining direct contact with the measured objects. This ...

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Diseño de un índice para colecciones de nubes de puntos en una rejilla Design of an index for collections of point clouds in a mesh

Diseño de un índice para colecciones de nubes de puntos en una rejilla Design of an index for collections of point clouds in a mesh

... a point cloud (images, audio, information of geographic systems, points and polygons in CAD systems, time series, ...by point clouds in large databases, robust to insertions and ...for point ...

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Supporting the Automatic Extraction of HBIM Elements from Point Clouds

Supporting the Automatic Extraction of HBIM Elements from Point Clouds

... As the awareness of the bene fi ts of BIM is increasingly growing and software and hardware resources are intensi fi ed, a greater understanding of the tools available and their application is becoming clear as long as new ...

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Integration of UAV, Sentinel-1, and Sentinel-2 Data for Mangrove Plantation aboveground Biomass Monitoring in Senegal

Integration of UAV, Sentinel-1, and Sentinel-2 Data for Mangrove Plantation aboveground Biomass Monitoring in Senegal

... DIM point clouds and orthomosaics generation using the photogrammetry software Pix4Dmapper (Pix4D SA, Lausanne, Switzerland) ...the point cloud is densified using multi-view stereo-reconstruction ...

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TítuloAssisted surface redesign by perturbing its point cloud representation

TítuloAssisted surface redesign by perturbing its point cloud representation

... the point cloud by a genetic recombination of surviving samples, not by manually manipulating the ...of point clouds seems ideal for a design methodology based on bottom-up self-organising processes, ...

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Using Assembled 2D LiDAR Data for Single Plant Detection

Using Assembled 2D LiDAR Data for Single Plant Detection

... using a k-d-Tree algorithm, to discriminate between early stage maize plants with a detection rate of 60 % (Weiss & Biber 2011). This was done indoors and outdoors in an optimized test crop row. When using machine ...

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3D updating of solid models based on local geometrical meshes applied to the reconstruction of ancient monumental structures

3D updating of solid models based on local geometrical meshes applied to the reconstruction of ancient monumental structures

... a point cloud representation of the ...a point cloud representation produced by a laser ...3D point-based model of a monument as starting elements of its 3D polygonal reconstruction in an interactive ...

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3D Segmentation Method for Natural Environments based on a Geometric-Featured Voxel Map

3D Segmentation Method for Natural Environments based on a Geometric-Featured Voxel Map

... dense point clouds and has been specially designed for natural ...the point cloud into objects by merging adjacent voxels, since after the ground extraction the objects appear ...a point-based ...

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Numerical simulation of cirrus cloud radiative forcing using lidar backscatter data.  Preliminary results

Numerical simulation of cirrus cloud radiative forcing using lidar backscatter data. Preliminary results

... Fu´s parameterization was used to represent the solar radiative properties of cirrus clouds in the code calculations. This is based assuming the hexagonal crystals shapes of cirrus clouds. We need introduce ...

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Cirrus cloud radiative characteristics from continuous MPLNET profiling at GSFC in 2012

Cirrus cloud radiative characteristics from continuous MPLNET profiling at GSFC in 2012

... Figure 1 shows the composite plot of 2012 detected clouds, where the color represents the density. Two well distinct clusters are visible. The upper strip represents daytime clouds, while the lower strip ...

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(In)Security above the Clouds

(In)Security above the Clouds

... In the end, some cloud vendors will step up and make their cloud applications more secure, layering in security policies, encryption and the like while doing their best to mitigate the single-point-of-failure ...

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Avatamsaka Sutra (The Flower Garland Sutra)

Avatamsaka Sutra (The Flower Garland Sutra)

... Furthermore, the Thunderbolt Bearing Spirit Demigod of Wonderful Form found the door of liberation seeing the Buddha manifest a body of infinite physical forms. The Thunderbolt Bearing Spirit Banner of Swiftness of the ...

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Tropopause and cirrus clouds tops heights

Tropopause and cirrus clouds tops heights

... cirrus clouds appear below the tropopause, especially in the tropics (Beyerle et ...cirrus clouds height and its evolution might be considered to be a new alternative, highly accurate way, including a high ...

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Detection and Tracking of Dynamic Objects. A MultiRobot approach to Critical Infrastructures Surveillance.

Detection and Tracking of Dynamic Objects. A MultiRobot approach to Critical Infrastructures Surveillance.

... Fast Point Feature Histogram (FPFH) [153] has been the selected feature descriptor since it focuses in 3D local shape description and can be computed faster than the ...the Point Feature Histogram (PFH) ...

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Lab – Configuring a Point-to-Point GRE VPN Tunnel (Instructor

Lab – Configuring a Point-to-Point GRE VPN Tunnel (Instructor

... In this lab, you will configure an unencrypted point-to-point GRE VPN tunnel and verify that network traffic is using the tunnel. You will also configure the OSPF routing protocol inside the GRE VPN tunnel. ...

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