Results 21 to 30 of about 1,194 (211)

Tree Crown Mapping in Managed Woodlands (Parklands) of Semi-Arid West Africa Using WorldView-2 Imagery and Geographic Object Based Image Analysis

Sensors, 2014
Detailed information on tree cover structure is critical for research and monitoring programs targeting African woodlands, including agroforestry parklands.
Martin Karlson, Heather Reese, Madelene Ostwald   +2 more
doaj   +1 more source

ACCURACY ASSESSMENT OF CROWN DELINEATION METHODS FOR THE INDIVIDUAL TREES USING LIDAR DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Forest canopy density and height are used as variables in a number of environmental applications, including the estimation of biomass, forest extent and condition, and biodiversity.
K. T. Chang, C. Lin, Y. C. Lin, J. K. Liu   +3 more
doaj   +1 more source

A Region-Based Hierarchical Cross-Section Analysis for Individual Tree Crown Delineation Using ALS Data

Remote Sensing, 2017
In recent years, airborne Light Detection and Ranging (LiDAR) that provided three-dimensional forest information has been widely applied in forest inventory and has shown great potential in automatic individual tree crown delineation (ITCD).
Yinghui Zhao, Yuanshuo Hao, Zhen Zhen, Ying Quan   +3 more
doaj   +1 more source

INDIVIDUAL TREE CROWN DELINEATION USING MULTI-WAVELENGTH TITAN LIDAR DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
The inability to detect the Emerald Ash Borer (EAB) at an early stage has led to the enumerable loss of different species of ash trees. Due to the increasing risk being posed by the EAB, a robust and accurate method is needed for identifying Individual ...
F. Naveed, B. Hu
doaj   +1 more source

Automated extraction of Camellia oleifera crown using unmanned aerial vehicle visible images and the ResU-Net deep learning model

Frontiers in Plant Science, 2022
As one of the four most important woody oil-tree in the world, Camellia oleifera has significant economic value. Rapid and accurate acquisition of C. oleifera tree-crown information is essential for enhancing the effectiveness of C.
Yu Ji, Yu Ji, Yu Ji, Enping Yan, Enping Yan, Enping Yan, Xianming Yin, Xianming Yin, Xianming Yin, Yabin Song, Wei Wei, Dengkui Mo, Dengkui Mo, Dengkui Mo   +13 more
doaj   +1 more source

Does the implementation of Automatic Individual Tree Crown Delineation (ITCD) impact the early detection of bark beetle (BB) infestation in Norway spruce forests? [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Early detection of bark beetle (BB) infestations in Norway spruce forests is essential for effective forest management. While UAV imagery offers high-resolution data, selecting appropriate crown pixels to detect subtle spectral changes during early BB ...
S. Bijou, L. Kupková, L. Červená, J. Lysák   +3 more
doaj   +1 more source

From Peaks to Crowns: A Morphology-Based UAV-LiDAR Framework for Individual Tree Segmentation [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Recognising individual trees has important applications in forest ecology and management. Conventional individual tree segmentation methods tend to favour dominant trees with pronounced canopy surface features but have limited capability in detecting ...
Y. Guo, H. Li, J. Yuan, H. Su, T. Xu, H. Sun, Q. Ma, Q. Ma, Q. Ma, Q. Ma   +9 more
doaj   +1 more source

Automatic Tree Crown Extraction from UAS Multispectral Imagery for the Detection of Bark Beetle Disturbance in Mixed Forests

Remote Sensing, 2020
Multispectral imaging using unmanned aerial systems (UAS) enables rapid and accurate detection of pest insect infestations, which are an increasing threat to midlatitude natural forests.
Robert Minařík, Jakub Langhammer, Theodora Lendzioch   +2 more
doaj   +1 more source

Accuracy of LiDAR-based tree height estimation and crown recognition in a subtropical evergreen broad-leaved forest in Okinawa, Japan

Forest Systems, 2015
Aim of study: To present an approach for estimating tree heights, stand density and crown patches using LiDAR data in a subtropical broad-leaved forest.
Azita Ahmad Zawawi, Masami Shiba, Noor Janatun Naim Jemali   +2 more
doaj   +1 more source

TED1 Promotes the Assembly of SCFD3‐D14‐D53 to Reinforce Strigolactone Signaling in Rice

Advanced Science, EarlyView.
This study identifies TED1 as a positive regulator of strigolactones (SL) signaling in rice. The ted1 mutants display dwarfism and increased tillering with significantly reduced SLs sensitivity. Through its longer C‐terminal region, TED1 interacts with D53 and D14 to promote the assembly of SCFD3‐D14‐D53, thereby facilitating the efficient ...
Sheng Luo, Chuanyin Wu, Miao Feng, Wenfan Luo, Rong Miao, Jinsheng Qian, Fan Wang, Chunlei Zhou, Bojuan Liu, Jiale Shao, Ziqi Xun, Yehui Xiong, Zhichao Zhao, Cailin Lei, Shanshan Zhu, Yulong Ren, Xin Wang, Xiuping Guo, Haiyang Wang, Zichao Li, Zhijun Cheng, Qibing Lin, Jianmin Wan   +22 more
wiley   +1 more source