6 papers
To Remove or Not to Remove Clouds: A Comparative Analysis and Fusion of Raw SAR and Synthetic NDWI for Overcast Water Segmentation
Saleh Sakib Ahmed, Sara Nowreen, M. Sohel Rahman
Persistent clouds blind optical satellites during floods. While Synthetic Aperture Radar (SAR) penetrates clouds, its raw data is noisy and lacks clear contrast. To mitigate this,…
Counting the Cost of War Under Satellite Embargo: Zero-Shot Estimation of Impacted Infrastructure
Saleh Sakib Ahmed, M. Sohel Rahman
Rapid estimation of impacted structures - critical for conflict-zone humanitarian response - is frequently hindered by post-strike satellite data embargoes and imagery blackouts. W…
CloudBreaker: Breaking the Cloud Covers of Sentinel-2 Images using Multi-Stage Trained Conditional Flow Matching on Sentinel-1
Saleh Sakib Ahmed, Sara Nowreen, M. Sohel Rahman
Cloud cover and nighttime conditions remain significant limitations in satellite-based remote sensing, often restricting the availability and usability of multi-spectral imagery. I…
GroundHog: Revolutionizing GLDAS Groundwater Storage Downscaling for Enhanced Recharge Estimation in Bangladesh
Saleh Sakib Ahmed, Rashed Uz Zzaman, Saifur Rahman Jony +5
Long-term groundwater level (GWL) measurement is vital for effective policymaking and recharge estimation using annual maxima and minima. However, current methods prioritize short-…
A light-weight model to generate NDWI from Sentinel-1
Saleh Sakib Ahmed, Saifur Rahman Jony, Md. Toufikuzzaman +4
The use of Sentinel-2 images to compute Normalized Difference Water Index (NDWI) has many applications, including water body area detection. However, cloud cover poses significant…
GraphAge: Unleashing the power of Graph Neural Network to Decode Epigenetic Aging
Saleh Sakib Ahmed, Nahian Shabab, Md. Abul Hassan Samee +1
DNA methylation is a crucial epigenetic marker used in various clocks to predict epigenetic age. However, many existing clocks fail to account for crucial information about CpG sit…