Results 271 to 280 of about 23,075 (290)

Estimation of forest canopy height by integrating multisensor data

SPIE Proceedings, 2009
Forest canopy height is an important input for ecosystem and highly correlated with aboveground biomass at the landscape scale. In this paper, we make efforts to extract the maximum canopy height using GLAS waveform combination with the terrain index in sloped area where LiDAR data were present.
Lixin Dong, Bingfang Wu, Zhenhua Guo
openaire   +1 more source

A forest canopy height surface model for scene simulation

SIMULATION, 1987
A model of forest canopy heights can support realistic remote sensing scene simulation. The final pixel (x, y) array of canopy heights results from merging structural and statistical sub-models. The structural model considers tree crowns to be structural primitives and permits explicit specification of forest structural characteristics (crown forms and
openaire   +1 more source

Forest Canopy Height Extraction in Rugged Areas With ICESat/GLAS Data

IEEE Transactions on Geoscience and Remote Sensing, 2014
Geoscience Laser Altimeter System data have been widely used in forest canopy height extraction. It is still challenging over rugged areas. In this paper, we propose a forest canopy height extraction method consisting of the Savitzky-Golay filter and fitting, Sigbeg determination based on the fitting results, and slope correction for rugged areas ...
Xiaoyi Wang, Huabing Huang, Peng Gong 0002, Caixia Liu 0002, Congcong Li, Wenyu Li   +5 more
openaire   +1 more source

Laser altimeter canopy height profiles: methods and validation for closed-canopy, broadleaf forests

Remote Sensing of Environment, 2001
Waveform-recording laser altimeter observations of vegetated landscapes provide a time-resolved measure of laser pulse backscatter energy from canopy surfaces and the underlying ground. Airborne laser altimeter waveform data was acquired using the Scanning Lidar Imager of Canopies by Echo Recovery (SLICER) for a successional sequence of four, closed ...
D.J Harding, M.A Lefsky, G.G Parker, J.B Blair   +3 more
openaire   +1 more source

Forest Canopy Height Retrieval and Analysis Using Random Forest Model with Multi-Source Remote Sensing Integration [PDF]

Sustainability
Forest canopy height is an important indicator of the forest ecosystem, and an accurate assessment of forest canopy height on a large scale is of great significance for forest resource quantification and carbon sequestration.
Weidong Zhu, Kuifeng Luan, Kuifeng Luan   +2 more
exaly   +2 more sources

GETTING TO THE CANOPY: TREE HEIGHT GROWTH IN A NEOTROPICAL RAIN FOREST

Ecology, 2001
There is still limited understanding of the processes underlying forest dy- namics in the world's tropical rain forests, ecosystems of disproportionate importance in terms of global biogeochemistry and biodiversity. Particularly poorly documented are the nature and time scale of upward height growth during regeneration by the tree species in these ...
Deborah A. Clark, David B. Clark
openaire   +1 more source

Exploring Canopy Temperature and Height Dynamics in Forest Ecosystems

2023 IEEE International Conference on Metrology for eXtended Reality, Artificial Intelligence and Neural Engineering (MetroXRAINE), 2023
Riyaaz Uddien Shaik, Kathiravan Thangavel, Sriram Babu Jallu, Dario Spiller, Roberto Sabatini, Weiping Zeng   +5 more
openaire   +1 more source

Uncertainty in lidar derived canopy height models in three unique forest ecosystems

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017
NEON conducts annual LiDAR flights over several ecologically unique sites within the continental United States. One of the products derived from the LiDAR acquisitions is a canopy height model (CHM), required to make inferences about vegetation structure and annual changes in growth.
Tristan Goulden, Bridget Hass, Nathan P. Leisso   +2 more
openaire   +1 more source

Deep Learning for Forest Canopy Height Estimation from SAR

IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 2023
Mahesh, Ragini Bal, Hänsch, Ronny
openaire   +2 more sources

THE FOREST, AND MILITARY ASPECTS OF A TERRAIN – FOREST HEIGHT, CANOPY COVER AND VISIBILITY IN ESTONIA

Most military activities need good concealment from a top down view, i.e. from surveillance carried out by flying assets 1. On the one hand, well hidden positions and sites are to be expected in forested areas. However, depending on the height of the trees and crown parameters as well as the tree species’ composition, the concealing effect can be ...
Vennik, Kersti, Lang, Mait
openaire   +1 more source