搜索结果: 76-90 共查到“遥感信息工程 LIDAR”相关记录204条 . 查询时间(0.093 秒)
The aim of this article is to present a concept of using airborne laser scanning (LIDAR), with one scan only, to map defoliation as a forest health variable. The idea is to apply two independent algor...
ESTIMATION OF CARBON STOCKS IN NEW ZEALAND PLANTED FORESTS USING AIRBORNE SCANNING LIDAR
Kyoto Protocol forest inventory sampling carbon models
2015/11/10
To meet obligations under Article 3.3 of the Kyoto Protocol, New Zealand is required to estimate, in an unbiased manner, forest carbon stock change, over the Protocol’s first commitment period (2008-2...
COMBINED TREE SEGMENTATION AND STEM DETECTION USING FULL WAVEFORM LIDAR DATA
LIDAR Analysis Segmentation Forestry Vegetation
2015/11/10
The study highlights a new method for the delineation of tree crowns and the detection of stem positions of single trees from dense airborne LIDAR data. At first, we combine a method for surface recon...
GENERATING LIDAR DATA IN LABORATORY:LIDAR SIMULATOR
Altimetric LiDAR Simulator Modelling of sensor Software Research and Education tool
2015/11/10
This paper describes the methodology adopted for developing a simulator for airborne altimetric LiDAR. The goal is to model LiDAR sensor functioning so LiDAR data can be generated for a user specified...
ESTIMATION OF LAI USING LIDAR REMOTE SENSING IN FOREST
LiDAR Leaf Area Index (LAI) Point density Vegetation Index Photosynthetically Active Radiation
2015/11/10
Light Detection and Ranging (LiDAR) has been used to extract surface information as it can acquire highly accurate object shape characteristics using geo-registered 3D-points. Therefore, LiDAR can be ...
SINGLE-TREE FOREST INVENTORY USING LIDAR AND AERIAL IMAGES FOR 3D TREETOP POSITIONING,SPECIES RECOGNITION,HEIGHT AND CROWN WIDTH ESTIMATION
Allometry Modeling Mapping Sampling Photo-plot Calibration Multi-Scale Matching Template
2015/11/10
An entire single-tree remote sensing (STRS) system was developed and tested in an inventory of timber resources of a 56.8-hectare forest. A semi-automatic approach with operator intervention is used i...
MODELLING CANOPY GAP FRACTION FROM LIDAR INTENSITY
Lidar gap fraction leaf area index intensity Beer-Lambert
2015/11/10
We reconstruct the vertical pulse power distribution returned from a commercial small footprint discrete pulse airborne laser terrain mapper within a mixed forest landscape. By modifying a Beer-Lamber...
GOING UNDERCOVER: MAPPING WOODLAND UNDERSTOREY FROM LEAF-ON AND LEAF-OFF LIDAR DATA
laser scanning LiDAR woodland understorey overstorey broadleaf
2015/11/10
An understorey model is created for an area of broadleaf, deciduous woodland in eastern England using airborne LiDAR data from winter 2003 (leaf-off conditions) and summer 2005 (leaf-on). The woodland...
REGISTRATION OF AGIA SANMARINA LIDAR DATA USING SURFACE ELEMENTS
Terrestrial LIDAR Building Point Cloud Registration Algorithms Automation Performance
2015/11/10
Several approaches for automatic registration of terrestrial LIDAR data exist. However, they normally can not be compared to each other because of a lack of reference data. This is especially true for...
ESTIMATION OF THE LIDAR HEIGHT OFFSET IN COASTAL VEGETATED AREAS
lidar laser scanning vegetation accuracy feature extraction intensity values
2015/11/10
Authorities operating in the field of coastal management require reliable area-wide height information for their responsibilities regarding to the safety of the coastal area. In this context the lidar...
ACCURACY OF FOREST PARAMETERS DERIVED FROM MEDIUM FOOTPRINT LIDAR UNDER OPERATIONAL CONSTRAINTS
LiDAR canopy height model (CHM) canopy closure degree of composition National Forest Inventory (NFI)
2015/11/10
The objective of this study is to test the feasibility of nation-wide medium footprint airborne laser scanning (ALS) data forderivation of forest parameters. The comparison of canopy closure as one im...
LIDAR-DERIVED SITE INDEX IN THE U.S. PACIFIC NORTHWEST–CHALLENGES AND OPPORTUNITIES
LiDAR Site Index Forest Inventory Pacific Northwest Douglas-fir
2015/11/10
Site Index (SI), a key inventory parameter, is traditionally estimated by using costly and laborious field assessments of tree height and age. The increasing availability of reliable information on st...
TERRESTRIAL LIDAR MEASUREMENTS FOR ANALYSING CANOPY STRUCTURE IN AN OLD-GROWTH FOREST
tree height old-growth forest canopy structure canopy projection terrestrial lidar
2015/11/10
Terrestrial lidar measurements with the Leica HDS 4500 laserscanner (Imager 5003 from Z+F) were executed in a structurally highly diverse, at least 200-year-old natural 11-species forest with typical ...
PROCESSING FULL-WAVEFORM LIDAR DATA:MODELLING RAW SIGNALS
lidar waveform analysis signal processing modelling generalized Gaussian
2015/11/10
Unlike airborne multi-echo laser scanner systems, full-waveform systems are able to digitize and record the entire backscattered signal of each laser pulse. It has been demonstrated that decomposing t...
USING AIRBORNE LIDAR FOR THE ASSESSMENT OF CANOPY STRUCTURE INFLUENCES ON CO2 FLUXES
airborne lidar carbon dioxide eddy covariance flux footprint canopy structure photosynthesis respiration
2015/11/10
Fluxes of carbon dioxide (CO2), water, and energy measured using the eddy covariance method (EC) will vary spatially and temporally within the catchment area of the EC system, especially if parts of t...