Results 21 to 30 of about 944,285 (292)

An Evasion and Counter-Evasion Study in Malicious Websites Detection [PDF]

open access: yes, 2014
Malicious websites are a major cyber attack vector, and effective detection of them is an important cyber defense task. The main defense paradigm in this regard is that the defender uses some kind of machine learning algorithms to train a detection model,
Xu, Li   +3 more
core   +2 more sources

Tree detection from aerial imagery [PDF]

open access: yesProceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2009
We propose an automatic approach to tree detection from aerial imagery. First a pixel-level classifier is trained to assign a {tree, non-tree} label to each pixel in an aerial image. The pixel-level classification is then refined by a partitioning algorithm to a clean image segmentation of tree and non-tree regions.
Lin Yang   +3 more
openaire   +1 more source

Using Tree Detection Algorithms to Predict Stand Sapwood Area, Basal Area and Stocking Density in Eucalyptus regnans Forest

open access: yesRemote Sensing, 2015
Managers of forested water supply catchments require efficient and accurate methods to quantify changes in forest water use due to changes in forest structure and density after disturbance. Using Light Detection and Ranging (LiDAR) data with as few as 0.
Dominik Jaskierniak   +3 more
doaj   +1 more source

Combining Spectral, Spatial-Contextual, and Structural Information in Multispectral UAV Data for Spruce Crown Delineation

open access: yesRemote Sensing, 2022
Precise delineation of individual tree crowns is critical for accurate forest biophysical parameter estimation, species classification, and ecosystem modelling.
Aravind Harikumar   +2 more
doaj   +1 more source

Constrained Spectral Clustering of Individual Trees in Dense Forest Using Terrestrial Laser Scanning Data

open access: yesRemote Sensing, 2018
The present study introduces an advanced method for 3D segmentation of terrestrial laser scanning data into single tree clusters. It intentionally tackled difficult forest situations with dense and structured tree formations, which inventory ...
Johannes Heinzel, Markus O. Huber
doaj   +1 more source

Finding Rumor Sources on Random Trees [PDF]

open access: yes, 2015
We consider the problem of detecting the source of a rumor which has spread in a network using only observations about which set of nodes are infected with the rumor and with no information as to \emph{when} these nodes became infected.
Shah, Devavrat, Zaman, Tauhid
core   +2 more sources

Detecting Coppice Legacies from Tree Growth

open access: yesPLOS ONE, 2016
In coppice-with-standards, once a common type of management in Central European lowland forests, selected trees (standards) were left to grow mature among the regularly harvested coppice stools to obtain construction wood. After the underwood was harvested, the forest canopy opened rapidly, giving standard trees an opportunity to benefit from reduced ...
Jana Müllerová   +5 more
openaire   +5 more sources

Trends in Automatic Individual Tree Crown Detection and Delineation—Evolution of LiDAR Data

open access: yesRemote Sensing, 2016
Automated individual tree crown detection and delineation (ITCD) using remotely sensed data plays an increasingly significant role in efficiently, accurately, and completely monitoring forests.
Zhen Zhen   +2 more
doaj   +1 more source

Single Shot MultiBox Detector for Urban Plantation Single Tree Detection and Location With High-Resolution Remote Sensing Imagery

open access: yesFrontiers in Environmental Science, 2021
Using high-resolution remote sensing images to automatically identify individual trees is of great significance to forestry ecological environment monitoring.
Yueyuan Zheng, Gang Wu
doaj   +1 more source

Radiative decay Z_H-> \gamma A_H in the little Higgs model with T-parity [PDF]

open access: yes, 2011
In the little Higgs model with T-parity (LHTM), the only tree-level kinematically allowed two-body decay of the Z_H boson is Z_H-> A_H H and thus one-loop induced two-body decays may have a significant rate.
Arkani-Hamed N.   +7 more
core   +1 more source

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