Results 1 to 10 of about 57,904,552 (254)

Automated Generation of Digital Terrain Model using Point Clouds of Digital Surface Model in Forest Area

Remote Sensing, 2011
At present, most of the digital data acquisition methods generate Digital Surface Model (DSM) and not a Digital Elevation Model (DEM). Conversion from DSM to DEM still has some drawbacks, especially the removing of off terrain point clouds and ...
Yoshikazu Kamiya, Rajendra P. Shrestha, Kande R.M.U. Bandara, Lal Samarakoon   +3 more
doaj   +3 more sources

The Effects of Roadside Woody Vegetation on the Surface Temperature of Cycle Paths

Land, 2021
The article is on the effects of woody vegetation growing on the roadside on the temperature of the surface of cycle paths. The main hypothesis of the study is that vegetation has the effect of lowering the temperature of the surroundings in its shadow ...
Nikola Žižlavská, Tomáš Mikita, Zdeněk Patočka   +2 more
doaj   +1 more source

Estimation of Fractional Photosynthetically Active Radiation From a Canopy 3D Model; Case Study: Almond Yield Prediction

Frontiers in Plant Science, 2021
Canopy-intercepted light, or photosynthetically active radiation, is fundamentally crucial for quantifying crop biomass development and yield potential.
Xin Zhang, Alireza Pourreza, Kyle H. Cheung, German Zuniga-Ramirez, German Zuniga-Ramirez, Bruce D. Lampinen, Kenneth A. Shackel   +6 more
doaj   +1 more source

Efficient dead pine tree detecting method in the Forest damaged by pine wood nematode (Bursaphelenchus xylophilus) through utilizing unmanned aerial vehicles and deep learning-based object detection techniques

Forest Science and Technology, 2022
Pine wood nematode (Bursaphelenchus xylophilus) is an invasive pathogen in South Korea, where it has caused pine wilt disease (PWD) with extremely high mortality of native pine species (Pinus densiflora, Pinus thunbergii, and Pinus koraiensis). Since the
Wontaek Lim, Kwanghun Choi, Wonhee Cho, Byungwoo Chang, Dongwook W. Ko   +4 more
doaj   +1 more source

Spatio-Temporal Estimation of Biomass Growth in Rice Using Canopy Surface Model from Unmanned Aerial Vehicle Images

Remote Sensing, 2021
The awareness of spatial and temporal variations in site-specific crop parameters, such as aboveground biomass (total dry weight: (TDW), plant length (PL) and leaf area index (LAI), help in formulating appropriate management decisions.
Clement Oppong Peprah, Megumi Yamashita, Tomoaki Yamaguchi, Ryo Sekino, Kyohei Takano, Keisuke Katsura   +5 more
doaj   +1 more source

DSM-to-LoD2: Spaceborne Stereo Digital Surface Model Refinement

Remote Sensing, 2018
A digital surface model (DSM) provides the geometry and structure of an urban environment with buildings being the most prominent objects in it. Built-up areas change with time due to the rapid expansion of cities. New buildings are being built, existing
Ksenia Bittner, Pablo d’Angelo, Marco Körner, Peter Reinartz   +3 more
doaj   +1 more source

Documentation of Urn Graves of Knovíz Culture by RPAS

Geoinformatics FCE CTU, 2016
This paper deals with the documentation, positional determination of urn graves of the Knovíz culture (1200 - 1000 BC), and geometric and positional determination of tumulus at the archaeological site located near the village Ctiněves, in the Usti region
Jaroslav Šedina, Eliška Housarová, Eva Matoušková   +2 more
doaj   +1 more source

Optimization of UAV-Based Imaging and Image Processing Orthomosaic and Point Cloud Approaches for Estimating Biomass in a Forage Crop

Remote Sensing, 2022
Forage and field peas provide essential nutrients for livestock diets, and high-quality field peas can influence livestock health and reduce greenhouse gas emissions.
Worasit Sangjan, Rebecca J. McGee, Sindhuja Sankaran   +2 more
doaj   +1 more source

Forest Height Estimation Approach Combining P-Band and X-Band Interferometric SAR Data

Remote Sensing, 2022
Forest height is an essential parameter used to derive important information about forest ecosystems, such as forest above-ground biomass. In this article, a forest height estimation approach combining P-band and X-band interferometric synthetic aperture
Kunpeng Xu, Lei Zhao, Erxue Chen, Kun Li, Dacheng Liu, Tao Li, Zengyuan Li, Yaxiong Fan   +7 more
doaj   +1 more source

A Comparative Assessment of Multi-Source Generation of Digital Elevation Models for Fluvial Landscapes Characterization and Monitoring

Remote Sensing, 2023
Imaging and measuring the Earth’s relief with sensors mounted upon unmanned aerial vehicles is an increasingly frequently used and promising method of remote sensing. In the context of fluvial geomorphology and its applications, e.g., landform mapping or
Paweł Sudra, Luca Demarchi, Grzegorz Wierzbicki, Jarosław Chormański   +3 more
doaj   +1 more source