Results 41 to 50 of about 49,010,873 (166)

Land Use and Land Cover Mapping with VHR and Multi-Temporal Sentinel-2 Imagery

open access: yesRemote Sensing, 2023
Land Use/Land Cover (LULC) mapping is the first step in monitoring urban sprawl and its environmental, economic and societal impacts. While satellite imagery and vegetation indices are commonly used for LULC mapping, the limited resolution of these ...
Suzanna Cuypers   +2 more
doaj   +1 more source

Geographic Object-Based Image Analysis (GEOBIA) for Landslide Identification using Machine Learning on Google Earth Engine (GEE)

open access: yes, 2023
Abstract Landslides significantly threaten human life and infrastructure, requiring accurate and timely identification for effective hazard assessment and management. In this study, we propose a novel approach for landslide identification by integrating Geographic Object-Based Image Analysis (GEOBIA) with advanced techniques and machine ...
Diwakar Khadka, Jie Zhang
openaire   +1 more source

Image Segmentation Parameter Optimization Considering Within- and Between-Segment Heterogeneity at Multiple Scale Levels: Test Case for Mapping Residential Areas Using Landsat Imagery

open access: yesISPRS International Journal of Geo-Information, 2015
Multi-scale/multi-level geographic object-based image analysis (MS-GEOBIA) methods are becoming widely-used in remote sensing because single-scale/single-level (SS-GEOBIA) methods are often unable to obtain an accurate segmentation and classification of ...
Brian A. Johnson   +4 more
doaj   +1 more source

GEOBIA 2016: Advances in Object-Based Image Analysis—Linking with Computer Vision and Machine Learning [PDF]

open access: yes, 2019
The 6th biennial conference on object-based image analysis—GEOBIA 2016—took place in September 2016 at the University of Twente in Enschede, The Netherlands (see www [...
Sébastien Lefèvre   +6 more
core   +2 more sources

Comparison of Remote Sensing Classification Techniques for Water Body Detection: A Case Study in Atikhisar Dam Lake (Çanakkale)

open access: yesCumhuriyet Science Journal, 2019
Water resources management isone of the most important issues of today. Satellite remote sensing have beensuccessfully used to detect the presence of water bodies.
Emre Özelkan
doaj   +1 more source

Assessing Neighborhood Conditions using Geographic Object-Based Image Analysis and Spatial Analysis (Short Paper) [PDF]

open access: yes, 2018
Traditionally, understanding urban neighborhood conditions heavily relies on time-consuming and labor-intensive surveying. As the growing development of computer vision and GIScience technology, neighborhood conditions assessment can be more cost ...
Yen, Chi-Feng   +2 more
core   +1 more source

Superpixel and Supervoxel Segmentation Assessment of Landslides Using UAV-Derived Models

open access: yesRemote Sensing, 2022
Reality capture technologies such as Structure-from-Motion (SfM) photogrammetry have become a state-of-the-art practice within landslide research workflows in recent years.
Ioannis Farmakis   +4 more
doaj   +1 more source

Impact of the Scale on Several Metrics Used in Geographical Object-Based Image Analysis: Does GEOBIA Mitigate the Modifiable Areal Unit Problem (MAUP)? [PDF]

open access: yesISPRS International Journal of Geo-Information, 2019
Using two GEOBIA (Geographical Object Based Image Analysis) algorithms on a set of segmented images compared to grid partitioning at different scales, we show that statistical metrics related to both objects and sets of pixels are (more or less) subject to the Modifiable Areal Unit Problem. Subsequently, even in a same spatial partition, there may be a
Josselin, Didier, Louvet, Romain
openaire   +3 more sources

Zoneamento hierárquico da paisagem nos domínios da Bacia do Rio Uruguai / Landscape hierarchical zoning in the domains of the Uruguay River Basin [PDF]

open access: yesSociedade & Natureza, 2014
This work presents an approach based on the combination of Geographic Information Systems (GIS) and Remote Sensing (RS) tools for the landscape integrated mapping within hierarchical zoning guidelines and Landscape Ecology principles.
Marcos Wellausen Dias de Freitas   +1 more
doaj   +1 more source

Using Geobia and Data Fusion Approach for Land use and Land Cover Mapping

open access: yesQuaestiones Geographicae, 2016
Land Use and Land Cover (LULC) maps play an important role in an environmental modelling, and for many years efforts have been made to improve and streamline the expensive mapping process.
Wężyk Piotr   +4 more
doaj   +1 more source

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