搜索结果: 61-75 共查到“工学 Point cloud”相关记录129条 . 查询时间(0.068 秒)
A Multi-Direction Extracting Method of the Building Contour Based on Point Cloud of the Terrestrial Laser Scanner
Terrestrial Laser scanning Pointe Cloud Images Multi-direction
2015/12/16
Mainly methods used currently for point cloud in the terrestrial three-dimensional laser scanner are to processing small industrial
parts, or sculptures, in which the data format and the correspondin...
Line-Based Referencing between Images and Laser Scanner Data for Image-Based Point Cloud Interpretation in a CAD-Environment
Close range photogrammetry Terrestrial laser scanning Data fusion
2015/12/16
Photogrammetric 3D object reconstruction can be obtained from images or laser scanner data. Because of their complementary
characteristics, these data are suitable for a combined interpretation. In t...
Automatic Registration of Terrestrial Point Cloud Using Panoramic Reflectance Images
Point Cloud Registration Terrestrial
2015/12/16
Much attention is paid to registration of terrestrial point clouds nowadays. Research is carried out towards improved efficiency and
automation of the registration process. This paper reports a new a...
Automatic Building Detection from LIDAR Point Cloud Data
Building Detection LIDAR DSM DTM Normalized DSM
2015/12/16
This paper proposes an automatic system which detects buildings in urban and rural areas by the use of first pulse return and last pulse return LIDAR data. Initially both first and last pulse return p...
DESIGN A FILTER TO DETECT AND REMOVE VEGETATION FROM ULTRA-CAM-X AERIAL IMAGES’ POINT CLOUD TO PRODUCE AUTOMATICALLY DIGITAL ELEVATION MODEL
Ultra-cam-x point clouds vegetation detection filtering DEM generation
2016/1/15
Digital elevation model is one of the most important spatial information for displaying bare earth. Because of existing objects on the ground, manual editing is unavoidable. Aerial images’ point cloud...
A Method of Extracting Geometric Information from the Point Cloud of Building
Point cloud Geometric features extraction Spatial index Normal distribution analysis
2015/12/9
The purpose of this article is to extract geometric features and other information for polyhedron, then using these features and information to build the model of object. In this essay, polyhedron ref...
Classification of LIDAR Point Cloud and Generation of DTM from LIDAR Height and Intensity Data In Forested Area
LIDAR Intensity Skewness Point Cloud DTM Forested Areas
2015/12/8
LIDAR (Light Detection And Ranging) is a mature remote sensing technology which can provide accurate elevation data for both topographic surfaces and above-ground objects. Derivation of accurate digit...
Semi-Automatic Orientation of Images With Respect to a Point Cloud System
Adjustment automation calibration detection matching orientation programming
2015/12/8
This paper presents the results of a master thesis in which it was tried to orient a set of images of an object to a point cloud of the same object. As test object the “Semper Sternwarte” in Zürich wa...
An Approach from Point Cloud plus Feature Data to Grid DEM
DEM LIDAR Point Cloud Feature Data Pattern Recognition
2015/12/8
Data sets acquired by LIDAR consist of land surface information and non-surface information, through some filter methods can get rid of non-surface information, but leave behind non-data area, some im...
Data Filtering and Feature Extraction of Urban Typical Objects from Airborne LIDAR Point Cloud
LIDAR Filtering Aerial Survey Feature Extraction Buildings Airborne Scanner Systems Urban Planning
2015/12/8
The research in the detection and feature extraction of typical objects in urban areas has intensified. In existing detection technologies, it has been shown that the LIDAR technique is very promising...
Combinative Representation of TLS Point Cloud and 3D Virtual Reality for Cultural Heritage Preservation Planning
Combination Laser Scanning Point Cloud Representation Reconstruction Virtual Reality Cultural Heritage
2015/12/3
A method for representation of 3D VR by combination of 2D and 3D models is. It improves the process of 3D scene building by importing of models from TLS point cloud data and it is supposed to be an ef...
Error Budget of LIDAR Systems and Quality Control of the Derived Point Cloud
LiDAR sensor model error analysis accuracy quality inspection
2015/11/20
The improving capability of the direct geo-referencing technology is having a positive impact on the widespread adoption of LiDAR systems for the acquisition of dense and accurate surface models over ...
DEVELOPMENT OF A PROCEDURE FOR VERTICAL STRUCTURE ANALYSIS AND 3D-SINGLE TREE EXTRACTION WITHIN FORESTS BASED ON LIDAR POINT CLOUD
Canopy Vertical structure Tree crown 3D model Lidar Point cloud
2015/11/10
A procedure for both vertical canopy structure analysis and 3D single tree extraction based on Lidar raw point cloud is presented in this paper. The whole study area is segmented into small study cell...
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,...
REIN ALGORITHM AND THE INFLUENCE OF POINT CLOUD DENSITY ON NDSM AND DEM PRECISION IN A SUBMEDITERRANEAN FOREST
lidar forest DEM nDSM point cloud density REIN algorithm
2015/11/10
The REIN algorithm makes use of the redundancy in lidar point cloud to generate bare ground DEM and vegetation canopy nDSM.The influence of the input lidar point density on the DEM precision and conse...