Results 31 to 40 of about 944,285 (292)

TREE STRUCTURE DATA CHANGE DETECTION METHOD

Information and Telecommunication Sciences, 2014
The new method, increasing efficiency and reliability of change detection in three structures in the Internet data under indetermination of data structure (DTD, XML-Schema) is proposed in this paper. The Boolean linear programming problem was solved in two exact methods – modified Balazs with filter and modified DP method and A modified method for ...
Molchanov, Yuriy, Globa, Larysa, Alexeyev, Nikolay   +2 more
openaire   +3 more sources

Forest Inventory with Long Range and High-Speed Personal Laser Scanning (PLS) and Simultaneous Localization and Mapping (SLAM) Technology

Remote Sensing, 2020
The use of new and modern sensors in forest inventory has become increasingly efficient. Nevertheless, the majority of forest inventory data are still collected manually, as part of field surveys.
Christoph Gollob, Tim Ritter, Arne Nothdurft   +2 more
doaj   +1 more source

Performance and Sensitivity of Individual Tree Segmentation Methods for UAV-LiDAR in Multiple Forest Types

Remote Sensing, 2022
Using unmanned aerial vehicles (UAV) as platforms for light detection and ranging (LiDAR) sensors offers the efficient operation and advantages of active remote sensing; hence, UAV-LiDAR plays an important role in forest resource investigations. However,
Kaisen Ma, Zhenxiong Chen, Liyong Fu, Wanli Tian, Fugen Jiang, Jing Yi, Zhi Du, Hua Sun   +7 more
doaj   +1 more source

Causality and Temporal Dependencies in the Design of Fault Management Systems [PDF]

, 2017
Reasoning about causes and effects naturally arises in the engineering of safety-critical systems. A classical example is Fault Tree Analysis, a deductive technique used for system safety assessment, whereby an undesired state is reduced to the set of ...
Bozzano, Marco
core   +2 more sources

Effectors of plants pathogenic fungi and fungal like microbes: a comprehensive review on mechanisms, roles, and host interactions

Frontiers in Plant Science
Plant ecosystems face primary threats from biological invasions in combination with microbial pathogens whose main threats derive from fungal pathogens.
Kainat, Majid Mujtaba, Yuting Wang, Boru Zhou   +3 more
doaj   +1 more source

Out-sphere decoder for non-coherent ML SIMO detection and its expected complexity [PDF]

, 2007
In multi-antenna communication systems, channel information is often not known at the receiver. To fully exploit the bandwidth resources of the system and ensure the practical feasibility of the receiver, the channel parameters are often estimated ...
Hassibi, B., Stojnic, M.
core   +1 more source

A Novel Technique Based on Machine Learning for Detecting and Segmenting Trees in Very High Resolution Digital Images from Unmanned Aerial Vehicles

Drones
The present study proposes a technique for automated tree crown detection and segmentation in digital images derived from unmanned aerial vehicles (UAVs) using a machine learning (ML) algorithm named Detectron2.
Loukas Kouvaras, George P. Petropoulos
doaj   +1 more source

AUTOMATIC SEGMENTATION OF TREE CROWNS IN PINE FORESTS USING MASK R-CNN ON RGB IMAGERY FROM UAVS [PDF]

Вопросы лесной науки
This article presents the results of applying an improved method for automatic segmentation of RGB imagery (orthophotos) obtained using consumer-grade unmanned aerial vehicles (UAVs) based on the Mask R-CNN neural network. Preparation and post-processing
А. D. Nikitina
doaj   +1 more source

Very High Density Point Clouds from UAV Laser Scanning for Automatic Tree Stem Detection and Direct Diameter Measurement

Remote Sensing, 2020
Three-dimensional light detection and ranging (LiDAR) point clouds acquired from unmanned aerial vehicles (UAVs) represent a relatively new type of remotely sensed data.
Karel Kuželka, Martin Slavík, Peter Surový   +2 more
doaj   +1 more source

YOLOv4-Lite–Based Urban Plantation Tree Detection and Positioning With High-Resolution Remote Sensing Imagery

Frontiers in Environmental Science, 2022
Automatic tree identification and position using high-resolution remote sensing images are critical for ecological garden planning, management, and large-scale environmental quality detection.
Yueyuan Zheng, Gang Wu
doaj   +1 more source