Ibrahim Fayad
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View article: Residual Kriging for Regional-Scale Canopy Height Mapping: Insights into GEDI-Induced Anisotropies and Sparse Sampling
Residual Kriging for Regional-Scale Canopy Height Mapping: Insights into GEDI-Induced Anisotropies and Sparse Sampling Open
Quantifying aboveground biomass (AGB) is essential in the context of global climate change. Canopy height, which is related to AGB, can be mapped using machine learning models trained with multi-source spatial data and GEDI measurements. I…
View article: Supplementary material to "A fused canopy height map of Italy (2004–2024) from spaceborne and airborne LiDAR, and Landsat via deep learning and Bayesian averaging"
Supplementary material to "A fused canopy height map of Italy (2004–2024) from spaceborne and airborne LiDAR, and Landsat via deep learning and Bayesian averaging" Open
View article: Alarming decline in the carbon sink of European forests driven by disturbances
Alarming decline in the carbon sink of European forests driven by disturbances Open
Forests are carbon sinks essential for climate change mitigation. However, increased harvests and natural disturbances across Europe have recently challenged this role. To project the future carbon sink capacity of Europe's forests, we int…
View article: DUNIA: Pixel-Sized Embeddings via Cross-Modal Alignment for Earth Observation Applications
DUNIA: Pixel-Sized Embeddings via Cross-Modal Alignment for Earth Observation Applications Open
Significant efforts have been directed towards adapting self-supervised multimodal learning for Earth observation applications. However, most current methods produce coarse patch-sized embeddings, limiting their effectiveness and integrati…
View article: Canopy height mapping in French Guiana using multi-source satellite data and environmental information in a U-Net architecture
Canopy height mapping in French Guiana using multi-source satellite data and environmental information in a U-Net architecture Open
Canopy height is a key indicator of tropical forest structure. In this study, we present a deep learning application to map canopy height in French Guiana using freely available multi-source satellite data (optical and radar) and complemen…
View article: Integration of very high-resolution stereo satellite images and airborne or satellite Lidar for Eucalyptus canopy height estimation
Integration of very high-resolution stereo satellite images and airborne or satellite Lidar for Eucalyptus canopy height estimation Open
International audience
View article: Combining satellite images with national forest inventory measurements for monitoring post-disturbance forest height growth
Combining satellite images with national forest inventory measurements for monitoring post-disturbance forest height growth Open
Introduction: The knowledge about forest growth, influenced by factors such as tree species, tree age, and environmental conditions, is a key for future forest preservation. Height and age data can be combined to describe forest growth and…
View article: Influence of Forest Plantation Characteristics on GEDI Returned Energy Distribution
Influence of Forest Plantation Characteristics on GEDI Returned Energy Distribution Open
This study explores the impact of Eucalyptus plantation characteristics and environmental factors on GEDI returned energy distribution. Random Forest (RF) regression was used to analyze the effect of a diverse parcel-scale Eucalyptus plant…
View article: Use of GEDI Signal and Environmental Parameters to Improve Canopy Height Estimation over Tropical Forest Ecosystems in Mayotte Island
Use of GEDI Signal and Environmental Parameters to Improve Canopy Height Estimation over Tropical Forest Ecosystems in Mayotte Island Open
Canopy height is a fundamental parameter for describing forest ecosystems. GEDI is a spaceborne LiDAR system that was designed to measure vegetation’s vertical structure at a global scale. This study evaluates the accuracy of GEDI-derived …
View article: Combining satellite images with national forest inventory measurements for monitoring post-disturbance forest height growth
Combining satellite images with national forest inventory measurements for monitoring post-disturbance forest height growth Open
The understanding of forest growth is crucial for the preservation of forests in the future. Factors such as tree species, age, forest management and environmental conditions influence this growth.Tree height and age data can be combined t…
View article: High-resolution canopy height map in the Landes forest (France) based on GEDI, Sentinel-1, and Sentinel-2 data with a deep learning approach
High-resolution canopy height map in the Landes forest (France) based on GEDI, Sentinel-1, and Sentinel-2 data with a deep learning approach Open
View article: Assimilating Sentinel-2 data in a modified vegetation photosynthesis and respiration model (VPRM) to improve the simulation of croplands CO2 fluxes in Europe
Assimilating Sentinel-2 data in a modified vegetation photosynthesis and respiration model (VPRM) to improve the simulation of croplands CO2 fluxes in Europe Open
View article: Hy-TeC: a hybrid vision transformer model for high-resolution and large-scale mapping of canopy height
Hy-TeC: a hybrid vision transformer model for high-resolution and large-scale mapping of canopy height Open
View article: FORMS: Forest Multiple Source height, wood volume, and biomass maps in France at 10 to 30 m resolution based on Sentinel-1, Sentinel-2, and Global Ecosystem Dynamics Investigation (GEDI) data with a deep learning approach
FORMS: Forest Multiple Source height, wood volume, and biomass maps in France at 10 to 30 m resolution based on Sentinel-1, Sentinel-2, and Global Ecosystem Dynamics Investigation (GEDI) data with a deep learning approach Open
The contribution of forests to carbon storage and biodiversity conservation highlights the need for accurate forest height and biomass mapping and monitoring. In France, forests are managed mainly by private owners and divided into small s…
View article: FORMS: Forest Multiple Source height, wood volume, and biomass maps in France at 10 to 30 m resolution based on Sentinel-1, Sentinel-2, and GEDI data with a deep learning approach
FORMS: Forest Multiple Source height, wood volume, and biomass maps in France at 10 to 30 m resolution based on Sentinel-1, Sentinel-2, and GEDI data with a deep learning approach Open
The contribution of forests to carbon storage and biodiversity conservation highlights the need for accurate forest height and biomass mapping and monitoring. In France, forests are managed mainly by private owners and divided into small s…
View article: Vision Transformers, a new approach for high-resolution and large-scale mapping of canopy heights
Vision Transformers, a new approach for high-resolution and large-scale mapping of canopy heights Open
Accurate and timely monitoring of forest canopy heights is critical for assessing forest dynamics, biodiversity, carbon sequestration as well as forest degradation and deforestation. Recent advances in deep learning techniques, coupled wit…
View article: Comparison of GEDI LiDAR Data Capability for Forest Canopy Height Estimation over Broadleaf and Needleleaf Forests
Comparison of GEDI LiDAR Data Capability for Forest Canopy Height Estimation over Broadleaf and Needleleaf Forests Open
The GEDI LiDAR system was specifically designed to detect vegetation structure and has proven to be a suitable tool for estimating forest biophysical parameters, especially canopy height, at a global scale. This study compares the GEDI rel…
View article: Biomass recovery after fires dominates the carbon sink of boreal forests over the last three decades
Biomass recovery after fires dominates the carbon sink of boreal forests over the last three decades Open
Wildfires are an integral part of boreal forest dynamics. Understanding the carbon loss/recovery associated with fires is crucial to assess the stability of these slow-growing forests. Yet, the carbon balance from fires and post-fire…
View article: Tropical Forest Top Height by GEDI: From Sparse Coverage to Continuous Data
Tropical Forest Top Height by GEDI: From Sparse Coverage to Continuous Data Open
Estimating consistent large-scale tropical forest height using remote sensing is essential for understanding forest-related carbon cycles. The Global Ecosystem Dynamics Investigation (GEDI) light detection and ranging (LiDAR) instrument em…
View article: High-resolution canopy height map in the Landes forest (France) based on GEDI, Sentinel-1, and Sentinel-2 data with a deep learning approach
High-resolution canopy height map in the Landes forest (France) based on GEDI, Sentinel-1, and Sentinel-2 data with a deep learning approach Open
In intensively managed forests in Europe, where forests are divided into stands of small size and may show heterogeneity within stands, a high spatial resolution (10 - 20 meters) is arguably needed to capture the differences in canopy heig…
View article: Influence of GEDI Acquisition and Processing Parameters on Canopy Height Estimates over Tropical Forests
Influence of GEDI Acquisition and Processing Parameters on Canopy Height Estimates over Tropical Forests Open
LiDAR technology has been widely used to characterize structural parameters of forest ecosystems, which in turn are valuable information for forest monitoring. GEDI is a spaceborne LiDAR system specifically designed to measure vegetation’s…
View article: An Assessment of the GEDI Lasers’ Capabilities in Detecting Canopy Tops and Their Penetration in a Densely Vegetated, Tropical Area
An Assessment of the GEDI Lasers’ Capabilities in Detecting Canopy Tops and Their Penetration in a Densely Vegetated, Tropical Area Open
The Global Ecosystem Dynamics Investigation (GEDI), specifically designed to measure vertical forest structures, has acquired, since April 2019, more than 35 billion waveforms of Earth’s surface on a nearly global scale. GEDI is equipped w…
View article: Correcting GEDI Water Level Estimates for Inland Waterbodies Using Machine Learning
Correcting GEDI Water Level Estimates for Inland Waterbodies Using Machine Learning Open
The Global Ecosystem Dynamics Investigation (GEDI) LiDAR on the International Space Station has acquired more than 35 billion shots globally in the period between April 2019 and August 2021. The acquired shots could offer a significant dat…
View article: Improving Heterogeneous Forest Height Maps by Integrating GEDI-Based Forest Height Information in a Multi-Sensor Mapping Process
Improving Heterogeneous Forest Height Maps by Integrating GEDI-Based Forest Height Information in a Multi-Sensor Mapping Process Open
Forests are one of the key elements in ecological transition policies in Europe. Sustainable forest management is needed in order to optimise wood harvesting, while preserving carbon storage, biodiversity and other ecological functions. Fo…
View article: Comparative Analysis of GEDI’s Elevation Accuracy from the First and Second Data Product Releases over Inland Waterbodies
Comparative Analysis of GEDI’s Elevation Accuracy from the First and Second Data Product Releases over Inland Waterbodies Open
Spaceborne LiDAR altimetry has been demonstrated to be an essential source of data for the estimation and monitoring of inland water level variations. In this study, water level estimates from the Global Ecosystem Dynamics Investigation (G…
View article: Tropical Forest Vertical Structure Characterization: From GEDI to P-Band SAR Tomography
Tropical Forest Vertical Structure Characterization: From GEDI to P-Band SAR Tomography Open
International audience
View article: A CNN-based approach for the estimation of canopy heights and wood volume from GEDI waveforms
A CNN-based approach for the estimation of canopy heights and wood volume from GEDI waveforms Open
View article: Quality Assessment of Acquired GEDI Waveforms: Case Study over France, Tunisia and French Guiana
Quality Assessment of Acquired GEDI Waveforms: Case Study over France, Tunisia and French Guiana Open
The Global Ecosystem Dynamics Investigation (GEDI) full-waveform (FW) LiDAR instrument on board the International Space Station (ISS) has acquired in its first 18 months of operation more than 25 billion shots globally, presenting a unique…
View article: Detecting Irrigation Events Using Sentinel-1 Data
Detecting Irrigation Events Using Sentinel-1 Data Open
International audience
View article: Estimating Canopy Height and Wood Volume of Eucalyptus Plantations in Brazil Using GEDI LiDAR Data
Estimating Canopy Height and Wood Volume of Eucalyptus Plantations in Brazil Using GEDI LiDAR Data Open
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