Ground Resolved Distance Estimation of Sentinel-2 Imagery Using Edge-based Scene-Driven Approach

PFG – Journal of Photogrammetry Remote Sensing and Geoinformation Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Abstract Sentinel‑2 satellite provides freely accessible multispectral images used in various remote sensing (RS) applications, where spatial resolution is crucial. The Ground Sampling Distance (GSD) for Sentinel’s visible and near-infrared (VNIR) bands specified at 10 meters, but it may not accurately reflect ground due to environmental effects. As a result, Resolved (GRD) serves as an alternative measure actual resolution, information about Sentinel GRD lacking, calibration targets are always available, vary across different tiles. This paper estimates using scene-driven approach that analyzes the edges of natural targets, reducing challenges associated with artificial targets. method involves selecting suitable based on their geometric spectral characteristics, sub-pixel edge extraction, estimating Edge Spread Function (ESF), generating Line (LSF), calculating Full-width Half Maximum (FWHM). Two tiles imagery from Shadnagar Calibration Facility, India, Baotou, China, were analyzed. analysis 40 revealed average values 12.65 m, 12.40 12.49 12.58 m red, green, blue, NIR bands, respectively, aligning closely results demonstrated high accuracy precision total RMSE approximately 0.77 standard deviation 0.19 respectively.

Language: Английский

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Bare ground classification using a spectral index ensemble and machine learning models optimized across 12 international study sites

Geocarto International, Journal Year: 2025, Volume and Issue: 40(1)

Published: March 1, 2025

Language: Английский

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Provision of land use and forest density maps in semi-arid areas of Iran using Sentinel-2 satellite images and vegetation indices

Advances in Space Research, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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