搜索结果: 1-10 共查到“地图制图技术 R-Tree”相关记录10条 . 查询时间(0.184 秒)
A Algorithm on Branches Number of a Tree Based on Extended Fractal Square Root Law
Cartography Visualization Digital Landscape Model Computer Vision
2015/12/16
It is an important question to calculate number of grown branches in a tree in visualization of trees growth. The number of growth branches is determined by visual effect or developer′s experience. Th...
USING AIRBORNE LASER SCANNER DATA IN FORESTRY MANAGEMENT:A NOVEL APPROACH TO SINGLE TREE DELINEATION
Laser Scanning Single Tree Delineation Forestry 3D GIS
2015/11/10
Lately, laser scanning even of huge areas has become economically sensible due to new airborne laser-scanners delivering higher resolutions and measurement frequency. In this paper we will describe a ...
A FULL GIS-BASED WORKFLOW FOR TREE IDENTIFICATION AND TREE CROWN DELINEATION USING LASER SCANNING
LiDAR Laser scanning region growing algorithm GIS identification crown delineation
2015/8/7
Laser scanning or LiDAR data are increasingly used in forestry applications but also e.g. in urban environments or for building reconstructions. Huge point clouds are usually converted to a grid or ar...
MONITORING THE URBAN TREE COVER FOR URBAN ECOSYSTEM SERVICES – THE CASE OF LEIPZIG, GERMANY
Mapping Urban Tree Cover Urban Ecosystem Functions
2015/5/6
Urban dynamics such as (extreme) growth and shrinkage bring about fundamental challenges for urban land use and related changes. In order to achieve a sustainable urban development, it is crucial to...
DOES TOPOGRAPHIC NORMALIZATION OF LANDSAT IMAGES IMPROVE FRACTIONAL TREE COVER MAPPING IN TROPICAL MOUNTAINS?
Landsat Fractional tree cover Topographic correction
2015/5/6
Fractional tree cover (Fcover) is an important biophysical variable for measuring forest degradation and characterizing land cover. Recently, atmospherically corrected Landsat data have become avail...
Development of Gis Tool for the Solution of Minimum Spanning Tree Problem using Prim's Algorithm
Transportation Network GIS Tool Minimum Spanning Tree (MST) Prim’s Algorithm Network Analysis
2014/12/16
minimum spanning tree (MST) of a connected, undirected and weighted network is a tree of that network consisting of all its nodes and the sum of weights of all its edges is minimum among all such poss...
Automatic Single Tree Detection in Plantations using UAV-based Photogrammetric Point clouds
Single Tree Detection UAV Palm plantation Structure From Motion Point Clouds Segmentation Terrain Models
2014/9/9
For reasons of documentation, management and certification there is a high interest in efficient inventories of palm plantations on the single plant level. Recent developments in unmanned aerial vehic...
LARGE AREA LAND COVER CLASSIFICATION WITH LANDSAT ETM+ IMAGES BASED ON DECISION TREE
land cover classification decision tree C5.0 MLC
2014/4/29
Traditional land classification techniques for large areas that use LANDSAT TM imagery are typically limited to the fixed spatial resolution of the sensors. For modeling habitat characteristics is oft...
Object-based assessment of tree attributes of Acacia tortilis in Bou-Hedma, Tunisia
Geographic object-based image analysis (GEOBIA) crown diameter estimation very high resolution (VHR) satellite data GeoEye Acacia tortilis
2014/6/12
Acacia tortilis subsp. raddiana represents the most important woody species in the pr e-Saharan zone. It is the only forest tree persisting on the edge of the desert. Due to tree/en...
COMBINATION OF TERRESTRIAL LASER SCANNING WITH HIGH RESOLUTION PANORAMIC IMAGES FOR INVESTIGATIONS IN FOREST APLLICATIONS AND TREE SPECIES RECOGNITION
Texture Fusion, Scanner
2015/5/27
The main
advantages of the system are the high speed of data collection
and the large field of view, which allows the realization of 360°
horizontal and 310° vertical turns during measurements. ...