Filters








587 Hits in 6.1 sec

Using remote sensing to assess tsunami-induced impacts on coastal forest ecosystems at the Andaman Sea coast of Thailand

H. Roemer, G. Kaiser, H. Sterr, R. Ludwig
2010 Natural Hazards and Earth System Sciences  
Additionally this study points out the uncertainties in both methods which are mainly due to a lack of ground truth information for the time between the two acquisition dates of satellite images.  ...  In this paper tsunami-induced damage of five different coastal forest ecosystems at the Phang-Nga province coast is analysed with a remote sensing driven approach based on multi-date IKONOS imagery.  ...  The research presented in this paper builds upon the project "Tsunami Risks, Vulnerability and Resilience in the Phang-Nga Province, Thailand" funded by the German Research Foundation. Edited by: K.  ... 
doi:10.5194/nhess-10-729-2010 fatcat:glp573ouizaondnh4zi3bx2zlq

Mangrove Species Identification: Comparing WorldView-2 with Aerial Photographs

Muditha Heenkenda, Karen Joyce, Stefan Maier, Renee Bartolo
2014 Remote Sensing  
However, with the availability of increased spectral resolution satellite imagery, and advances in digital image classification algorithms, there is now a potential to digitally classify mangroves to the  ...  In contrast to this accuracy, the error matrix for the automated classification of aerial photographs indicated less promising results.  ...  Acknowledgments The support of the Northern Territory Government, Australia in providing aerial photographs for this study is gratefully acknowledged.  ... 
doi:10.3390/rs6076064 fatcat:p7t4l62clrdj5hfhlttxonlugi

The role of remote sensing in the development of SMART indicators for ecosystem services assessment

T. P. Dawson, M. E. J. Cutler, C. Brown
2016 Biodiversity  
Acknowledgements Wildand Ltd (with assistance from Scottish Natural Heritage) provided financial and logistical support for the assessment of peatland degradation in northern Scotland.  ...  Additionally we thank the anonymous reviewers for their encouraging comments and suggestions for the improvement of this manuscript.  ...  An effective framework to facilitate the development of suitable indicators is through using the SMART approach, which defines five criteria that could be applied to set management goals, which are Specific  ... 
doi:10.1080/14888386.2016.1246384 fatcat:i7vsmwvdnranhmhnvm2jiprgay

Sustainability in Urban Ecosystems and Detecting Urban Vegetation from Different Images Using an Object-Based Approach [chapter]

Metin Tunay, Ayhan Atesoglu, Aycan M., Serkan Karaks, Hakan Aki
2012 Sustainable Development - Education, Business and Management - Architecture and Building Construction - Agriculture and Food Security  
Acknowledgements Parts of the presented results have been supported by TUBITAK, Turkey and the Jülich Research Centre, Germany.  ...  ., (2004) GIS-Based Analysis Using Feature Extraction of Illegal Urbanization in Zonguldak Testfield Covered with Trees. GIS Days, 6-9 October 2004, Fatih University, İstanbul (In Turkish).  ...  It is possible to say that techno-ecosystems negatively change the balance in natural ecosystems.  ... 
doi:10.5772/29585 fatcat:nzaef7igrrgxzgqgz2e2w6dxfa

Urban Land Use and Land Cover Change Analysis Using Random Forest Classification of Landsat Time Series

Saeid Amini, Mohsen Saber, Hamidreza Rabiei-Dastjerdi, Saeid Homayouni
2022 Remote Sensing  
This study presents an algorithm that uses Landsat time-series data to analyze LULC change.  ...  We also explored the performance of the pan-sharpening algorithm on Landsat bands besides the impact of different image compositions to produce a high-quality LULC map.  ...  Acknowledgments: The authors would like to thank Sofia Ermida for the LST retrieval code (https: //code.earthengine.google.com/?  ... 
doi:10.3390/rs14112654 fatcat:6vclgvudnzhs5pjwm2vvgpsi54

Dynamic Land Cover Mapping of Urbanized Cities with Landsat 8 Multi-temporal Images: Comparative Evaluation of Classification Algorithms and Dimension Reduction Methods

Ugur Alganci
2019 ISPRS International Journal of Geo-Information  
These changes mostly affect natural habitats and the ecosystem in a negative manner.  ...  Urbanization progress that occurs due to population expansion and migration results in important changes in the land cover characteristics of a city.  ...  This amount of change has a high potential for generating negative impacts on the natural environment and ecosystem.  ... 
doi:10.3390/ijgi8030139 fatcat:fhsdz5m6ufd5nbd5gy27o2wy64

Submerged and Emergent Land Cover and Bathymetric Mapping of Estuarine Habitats Using WorldView-2 and LiDAR Imagery

Joanne Halls, Kaitlyn Costin
2016 Remote Sensing  
The data and methods developed here could be used by state and local government planning agencies to assess potential long-term changes and develop appropriate management strategies.  ...  The purpose of this study was to test methods for high spatial resolution mapping of benthic (submerged) and emergent habitats as well as the derivation of bathymetry using DigitalGlobe's WorldView-2 imagery  ...  Acknowledgments: The authors would like to thank the Department of Earth and Ocean Sciences, University of North Carolina Wilmington, for providing the Trimble RTK equipment and Yvonne Marsan for helping  ... 
doi:10.3390/rs8090718 fatcat:zigzob7zgbcxjbrbmzmu5aqsda

Pixel- vs. Object-Based Landsat 8 Data Classification in Google Earth Engine Using Random Forest: The Case Study of Maiella National Park

Andrea Tassi, Daniela Gigante, Giuseppe Modica, Luciano Di Martino, Marco Vizzari
2021 Remote Sensing  
In this process, we compared two pixel-based (PB) and two object-based (OB) approaches, assessing the advantages of integrating the textural information in the PB approach.  ...  After selecting the best time window of the year to compose the base data cube, we applied a cloud-filtering and a topography-correction process on the 32 available L8 surface reflectance images.  ...  The GEE codes developed in this research are available, upon any reasonable request, by emailing the authors. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13122299 fatcat:jmd2ij7djfbf7cgusudcbsv42i

Watershed Land Cover/Land Use Mapping Using Remote Sensing and Data Mining in Gorganrood, Iran

Masoud Minaei, Wolfgang Kainz
2016 ISPRS International Journal of Geo-Information  
As a result of this, different types of Land Cover/Land Use (LCLU) change are taking place on an intensive level in the area.  ...  The results of this study indicate that a significant amount of change has occurred in the region, and that this has as a consequence affected ecosystem services and human activity.  ...  Wolfgang Kainz supervised the entire research, provided valuable advice and made key modifications to the paper. The paper was revised by both.  ... 
doi:10.3390/ijgi5050057 fatcat:3e2pl5vv4vhpxhbrxccb3ftrkm

ACCURATE MAPPING OF DATE PALMS AT DIFFERENT AGE-STAGES FOR THE PURPOSE OF ESTIMATING THEIR BIOMASS

S. M. Issa, B. S. Dahy, N. Saleous
2020 ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The main objective of the current study was to produce an accurate map of date palm (DP) plantations in the Emirate of Abu Dhabi in United Arab Emirates (UAE) using moderate resolution Landsat-8 (OLI)  ...  This was achieved using a hierarchical integrated approach: first, Landsat-8 OLI imagery were used to map mature date palms in the study area; second, an object oriented classification (OOC) approach was  ...  ACKNOWLEDGMENTS We would like to express our appreciation to the Research Affairs -United Arab Emirates University for their financial support under fund grant # 31S247.  ... 
doi:10.5194/isprs-annals-v-3-2020-461-2020 fatcat:mycnuxk3v5apvksne6tlcxvvfm

Application of GIS and Remote Sensing Technique to Change Detection in Land Use/Land Cover Mapping of Igbokoda, Ondo State, Nigeria

James R. Adewumi, James K. Akomolafe, Fidelis O. Ajibade, Blessing B. Fabeku
1970 Journal of Applied Science & Process Engineering  
This study has demonstrated that remotely sensed data and GIS based approach is timely and cost effective than the conventional method of analysis, classification of land use pattern effective for planning  ...  The images were analyzed using change detection technique (NDVI differencing) along with SRTM 90m DEM of the study area to generate the extent of the changes that have occurred.  ...  The goal of remote sensing change detection according to [16] is to: a) detect the geographic location of change found when comparing two (or more) dates of imagery; b) identify the type of change if  ... 
doi:10.33736/jaspe.173.2016 fatcat:vo4ftfxsbvfhdaqknjgdcv4sle

Mapping Tree Species Using Advanced Remote Sensing Technologies: A State-of-the-Art Review and Perspective

Ruiliang Pu
2021 Journal of Remote Sensing  
The review will provide an overview on various optical and light detection and ranging (LiDAR) sensors; present and assess current various techniques/methods for, and a general trend of method development  ...  Since many studies on the topic have been conducted and their comprehensive results and novel findings have been published in the literature, it is necessary to conduct an updated review on the status,  ...  Acknowledgments This work was supported by the University of South Florida, USA.  ... 
doi:10.34133/2021/9812624 fatcat:f3lmtkaaejepbif4j5lhcllz4u

Stress Detection in New Zealand Kauri Canopies with WorldView-2 Satellite and LiDAR Data

Jane J. Meiforth, Henning Buddenbaum, Joachim Hill, James D. Shepherd, John R. Dymond
2020 Remote Sensing  
In this study, we investigate the use of pan-sharpened WorldView-2 (WV2) satellite and Light Detection and Ranging (LiDAR) data for detecting stress symptoms in the canopy of kauri trees.  ...  For detection of the first stress symptoms, an NDVI on the red-edge and green bands increased the performance.  ...  While some pan-sharpening methods can alter the spectral information, certain techniques, such as the Gram-Schmidt and Ehlers pan-sharpening methods, have been tested and shown to be superior for preserving  ... 
doi:10.3390/rs12121906 fatcat:rxbimpbbvje47on5c2pndipgvu

Large-Area, High-Resolution Tree Cover Mapping with Multi-Temporal SPOT5 Imagery, New South Wales, Australia

Adrian Fisher, Michael Day, Tony Gill, Adam Roff, Tim Danaher, Neil Flood
2016 Remote Sensing  
These studies have been used to assess the extent of remaining natural forest, the location of threats to biodiversity as well as the effectiveness of existing protected-area networks.  ...  In this study, multi-temporal Satellite pour l'Observation de la Terre 5 (SPOT5) High Resolution Geometrical data was pan-sharpened to 5 m resolution and used to map tree cover for the Australian state  ...  This was done interactively by visually discerning tree foliage in 2.5 m pan-sharpened SPOT5 near-natural imagery acquired during the 2011 summer.  ... 
doi:10.3390/rs8060515 fatcat:a7bfny4iyjgsdj4ryxq3lioqlq

Urban Tree Species Classification Using a WorldView-2/3 and LiDAR Data Fusion Approach and Deep Learning

Sean Hartling, Vasit Sagan, Paheding Sidike, Maitiniyazi Maimaitijiang, Joshua Carron
2019 Sensors  
The objective of this study was to examine the potential of a novel deep learning method, Dense Convolutional Network (DenseNet), to identify dominant individual tree species in a complex urban environment  ...  However, there are knowledge gaps that are related to the contribution of Worldview-3 SWIR bands, very high resolution PAN band and LiDAR data in detailed tree species mapping.  ...  Acknowledgments: Worldview multispectral imagery was obtained through a grant from the Digital Globe Foundation. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s19061284 fatcat:pnmjni3hhbdypmbf5ntwmie7ki
« Previous Showing results 1 — 15 out of 587 results