Showing 19 results for Author: David C. Hughes
Jun, 2026
Book Chapter
This chapter gives a thorough overview of radiometric correction techniques for optical, synthetic aperture radar, and thermal remote sensing data, emphasizing their role in supporting accurate and AI-ready geospatial analysis. The chapter begins by presenting the physical principles of electromagnetic radiation and subsequent interaction with the atmosphere. Topics covere…
Mar, 2026
Conference Paper
We propose a weakly-supervised, multitask framework for training a convolutional neural network to solve the problem of cloud shadow mitigation given only cloud and shadow masks as labels. The network minimizes the Wasserstein distance between shadows and their proximal sunlit neighborhoods, generating a supervisory signal directly from within the input image. We extract f…
Jan, 2026
ORNL Report
Oct, 2025
ORNL Report
Jun, 2025
Journal
Study region: The Dnieper and Dniester Rivers of Ukraine. Study focus: The ongoing conflict in Ukraine has caused disruptions to electricity generation, of which hydroelectric sources contribute approximately 9 % to the country’s needs. With the takeover of the Zaporizhzhia nuclear power plant by enemy forces, the loss of the Kakhovka hydroelectric dam, and the future impa…
Apr, 2024
ORNL Report
Dec, 2023
Conference Paper
Monitoring progress of power restoration following extreme events is essential for situational awareness about spatio-temporal distribution of populations without power and to help with response efforts. Because of the proprietary nature of restoration data, and the difficulty in obtaining power outage data from utility companies in near real-time (e.g., during hurricane M…
Dec, 2023
Journal
Energy infrastructure assessments are needed within 72 hours of natural disasters, and previous data collection methods have proven too slow. We demonstrate a scalable end-to-end solution using a prototype unmanned aerial system that performs on-the-edge detection, classification (i.e., damaged or undamaged), and geo-location of utility poles. The prototype is suitable for…
Nov, 2023
Journal
Illicit maritime activity, such as piracy and smuggling, is a global issue that often occurs in areas where interdiction authorities are sparse, ground-based monitoring technologies like radar lack range and coverage, and dark vessels abound. Our objective was to assess vessel congregation patterns, identify likely beaching areas based on terrain maps, and use them to narr…