Multi-Source Fusion Algorithms for Satellite Image Resolution Enhancement in Urban Land Cover Mapping of Ho Chi Minh City, Vietnam

This study explores pan-sharpening techniques to enhance the spatial resolution of Landsat 8-9 optical imagery and dual-polarized (VV/VH) SAR data for improved urban land cover classification. Mediumto low-resolution satellite images often pose challenges in accurately delineating specific urban fea...

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Main Authors: Ha Tran Phuong, Ha Tuan Cuong
Format: Article
Language:English
Published: EDP Sciences 2025-01-01
Series:E3S Web of Conferences
Online Access:https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/26/e3sconf_eier2025_01005.pdf
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author Ha Tran Phuong
Ha Tuan Cuong
author_facet Ha Tran Phuong
Ha Tuan Cuong
author_sort Ha Tran Phuong
collection DOAJ
description This study explores pan-sharpening techniques to enhance the spatial resolution of Landsat 8-9 optical imagery and dual-polarized (VV/VH) SAR data for improved urban land cover classification. Mediumto low-resolution satellite images often pose challenges in accurately delineating specific urban features. Sentinel-1 SAR data provides critical surface parameters such as moisture and conductivity through backscatter analysis, while optical imagery captures spectral reflectance essential for land cover discrimination. By integrating SAR and optical datasets, the fused imagery benefits from both spectral richness and enhanced spatial detail. This research evaluates the performance of Gram-Schmidt (GS) and Principal Component Analysis (PCA) fusion methods in combining Sentinel-1 SAR and Landsat 8-9 imagery for urban land cover mapping in Ho Chi Minh City (2024). The Structural Similarity Index (SSIM) and bias analysis confirm that the fusion process effectively retains spectral integrity while enhancing spatial resolution to 10m, thereby improving the identification of surface features in urban environments.
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issn 2267-1242
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publisher EDP Sciences
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spelling doaj-art-7a46d85e8bfd4263874d93714f93edb32025-08-20T02:26:02ZengEDP SciencesE3S Web of Conferences2267-12422025-01-016260100510.1051/e3sconf/202562601005e3sconf_eier2025_01005Multi-Source Fusion Algorithms for Satellite Image Resolution Enhancement in Urban Land Cover Mapping of Ho Chi Minh City, VietnamHa Tran Phuong0Ha Tuan Cuong1Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and TechnologySouthern Sub-Institute of Forest Inventory and PlanningThis study explores pan-sharpening techniques to enhance the spatial resolution of Landsat 8-9 optical imagery and dual-polarized (VV/VH) SAR data for improved urban land cover classification. Mediumto low-resolution satellite images often pose challenges in accurately delineating specific urban features. Sentinel-1 SAR data provides critical surface parameters such as moisture and conductivity through backscatter analysis, while optical imagery captures spectral reflectance essential for land cover discrimination. By integrating SAR and optical datasets, the fused imagery benefits from both spectral richness and enhanced spatial detail. This research evaluates the performance of Gram-Schmidt (GS) and Principal Component Analysis (PCA) fusion methods in combining Sentinel-1 SAR and Landsat 8-9 imagery for urban land cover mapping in Ho Chi Minh City (2024). The Structural Similarity Index (SSIM) and bias analysis confirm that the fusion process effectively retains spectral integrity while enhancing spatial resolution to 10m, thereby improving the identification of surface features in urban environments.https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/26/e3sconf_eier2025_01005.pdf
spellingShingle Ha Tran Phuong
Ha Tuan Cuong
Multi-Source Fusion Algorithms for Satellite Image Resolution Enhancement in Urban Land Cover Mapping of Ho Chi Minh City, Vietnam
E3S Web of Conferences
title Multi-Source Fusion Algorithms for Satellite Image Resolution Enhancement in Urban Land Cover Mapping of Ho Chi Minh City, Vietnam
title_full Multi-Source Fusion Algorithms for Satellite Image Resolution Enhancement in Urban Land Cover Mapping of Ho Chi Minh City, Vietnam
title_fullStr Multi-Source Fusion Algorithms for Satellite Image Resolution Enhancement in Urban Land Cover Mapping of Ho Chi Minh City, Vietnam
title_full_unstemmed Multi-Source Fusion Algorithms for Satellite Image Resolution Enhancement in Urban Land Cover Mapping of Ho Chi Minh City, Vietnam
title_short Multi-Source Fusion Algorithms for Satellite Image Resolution Enhancement in Urban Land Cover Mapping of Ho Chi Minh City, Vietnam
title_sort multi source fusion algorithms for satellite image resolution enhancement in urban land cover mapping of ho chi minh city vietnam
url https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/26/e3sconf_eier2025_01005.pdf
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