Estimating tree attributes using airborne laser scanning
Estimation of stem attributes using a combination of terrestrial and airborne laser scanning
... contain laser reflections from several trees or large open ground ...a laser reflection from the ground whereas the smaller raster cells might not contain a ground ...
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Estimating and mapping forest structure diversity using airborne laser scanning data
... between tree height and diameter are well established in the forestry literature and practice (Martin and Flewelling 1998), and are often used to link the two attributes (Buongiorno et ...greater ...
129
An International Comparison of Individual Tree Detection and Extraction using Airborne Laser Scanning
... automatic tree extraction methods, mainly based on laser scanner ...varying laser point ...different tree height ...automatic tree detection and extraction techniques were added to the ...
25
Prediction of tree biomass in the forest–tundra ecotone using airborne laser scanning
... from laser data with approximately ...maximum tree height in our ...mean tree height ranged from ...derived using cross-validation ranged from ...However, tree species had a significant ...
20
Single-Sensor Solution to Tree Species Classification Using Multispectral Airborne Laser Scanning
... Individual Tree Detection The accuracy of individual tree detection was evaluated by comparing tree segments with field reference ...the tree detection rate was lower than that in the sparse ...
16
Mapping and monitoring of vegetation using airborne laser scanning
... individual tree can be ...(e.g., using statistical ...where laser metrics are calculated within raster cells with the size of a field ...between laser metrics from two time points are ...
72
Estimation of forest variables using airborne laser scanning
... maximum laser height value above the ground surface (DTM) was chosen as the measure of tree ...the laser elevation data in order to judge whether the additional segments were separate trees or only ...
43
Single Tree Detection from Airborne Laser Scanning Data: A Stochastic Approach
... single tree detection from CHMs generated from ALS data is con- sidered to be a difficult problem in both forestry and computer ...areas tree crows overlap and some trees are growing beneath the dominant ...
182
Estimating Vertical Distribution of Vegetation Cover in Temperate Heterogeneous Forests Using Airborne Laser Scanning Data
... in laser penetration between species of the broad-leaved poplar box and the coniferous cypress pine; while poplar box exhibits larger gaps in crown foliage, the needle density of cypress pine provides less ...
8
Mapping tree canopies in urban environments using airborne laser scanning (ALS): a Vancouver case study
... the tree detection, delineation, characterization and species determination, individual tree data within the city was compiled from three different ...the tree type (deciduous or coniferous) was ...
9
Estimation of tree lists from airborne laser scanning by combining single-tree and area-based methods
... by using a k-NN approach and then multiply the number of stems with a scaling factor derived from stem volume ...by using the k-MSN method without producing unrealistic combinations of ...
15
Variability of wood properties using airborne and terrestrial laser scanning
... in estimating wood quality and forest biomass and thus developing the precision and sustainability of forest management and ...Therefore, tree-specific field references and spatially transferable models are ...
14
Evaluation of airborne laser scanning data for tree parameters and terrain modelling in forest environment
... standard scanning with density of 3–5 points per m 2 show suffi cient accuracy and enables to gain good-quality model of the vegetation for this ...and tree volume calculation good results for practical usage ...
9
Mapping individual tree species using airborne imaging spectroscopy and laser scanning data in Taita Hills, Kenya
... Individual tree crown segmentation Segmentation of the ITC was implemented using MNF-transformed AISA images where image layers were weighted inversely according to the number of the band so that first band ...
65
Optimal structural and spectral features for tree species classification using combined airborne laser scanning and hyperspectral data
... in tree species classification based on multi source earth observation data was ...and airborne laser scanning (ALS) data, as well as their ...when using IS ...to using all ...
5
Assessment of Low Density Full-Waveform Airborne Laser Scanning for Individual Tree Detection and Tree Species Classification
... Data Laser scanning data were collected in July 2010 when trees were in leaf-on conditions, using a Leica ALS60 system operating at a pulse rate of 117 kHz and a wavelength of 1064 ...reflected ...
21
The prediction of single-tree biomass, logging recoveries and quality attributes with laser scanning techniques
... the accuracy of the MS-STI methodology was assessed in diverse forest conditions. Current AGB models are mainly based on DBH, height and tree species information and do not utilize canopy size information, which ...
49
Estimating stand level stem diameter distribution utilizing harvester data and airborne laser scanning
... 4 Discussion This study examined the use of harvester data in the estimation of stand-level stem diameter distributions and related stand attributes. We also compared different harvester plot sizes in the ...
19
Estimating aboveground carbon density and its uncertainty in Borneo’s structurally complex tropical forests using airborne laser scanning
... NERC’s Airborne Research Facility and Data Analysis Node for conducting the survey and preprocessing the airborne data and to Abdullah Ghani for manning the GPS base ...Carnegie Airborne Observatory ...
20
Estimating aboveground carbon density and its uncertainty in Borneo's structurally complex tropical forests using airborne laser scanning
... NERC’s Airborne Research Facility and Data Analysis Node for conducting the survey and preprocessing the airborne data and to Abdullah Ghani for manning the GPS base ...Carnegie Airborne Observatory ...
20