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Synthetic aperture imaging systems achieve constant azimuth resolution by coherently summating the observations acquired along the aperture path. At this aim, their locations have to be known with subwavelength accuracy. In underwater…

Systems and Control · Computer Science 2017-07-27 Salvatore Caporale , Yvan Petillot

DL based Synthetic Aperture Radar (SAR) ship detection has tremendous advantages in numerous areas. However, it still faces some problems, such as the lack of prior knowledge, which seriously affects detection accuracy. In order to solve…

Computer Vision and Pattern Recognition · Computer Science 2025-12-19 Han Ke , Xiao Ke , Ye Yan , Rui Liu , Jinpeng Yang , Tianwen Zhang , Xu Zhan , Xiaowo Xu

Quantifying the vertical distribution of atmospheric aerosols is crucial for estimating their impact on the Earth energy budget and climate, improving forecast of air pollution in cities, and reducing biases in the retrieval of greenhouse…

Atmospheric and Oceanic Physics · Physics 2019-08-19 Zhao-Cheng Zeng , Sihe Chen , Vijay Natraj , Tianhao Le , Feng Xu , Aronne Merrelli , David Crisp , Stanley P. Sander , Yuk L. Yung

We present OceanSAR-2, the second generation of our foundation model for SAR-based ocean observation. Building on our earlier release, which pioneered self-supervised learning on Sentinel-1 Wave Mode data, OceanSAR-2 relies on improved SSL…

Skyline plays a pivotal role in mountainous visual geo-localization and localization/navigation of planetary rovers/UAVs and virtual/augmented reality applications. We present a novel mountainous skyline detection approach where we adapt a…

Computer Vision and Pattern Recognition · Computer Science 2021-07-26 Touqeer Ahmad , Ebrahim Emami , Martin Čadík , George Bebis

This work has been accepted by IEEE TGRS for publication. The majority of optical observations acquired via spaceborne earth imagery are affected by clouds. While there is numerous prior work on reconstructing cloud-covered information,…

Image and Video Processing · Electrical Eng. & Systems 2021-07-07 Patrick Ebel , Andrea Meraner , Michael Schmitt , Xiaoxiang Zhu

The progress in maritime obstacle detection is hindered by the lack of a diverse dataset that adequately captures the complexity of general maritime environments. We present the first maritime panoptic obstacle detection benchmark LaRS,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Lojze Žust , Janez Perš , Matej Kristan

Accurately maintaining digital street maps is labor-intensive. To address this challenge, much work has studied automatically processing geospatial data sources such as GPS trajectories and satellite images to reduce the cost of maintaining…

Computer Vision and Pattern Recognition · Computer Science 2021-10-14 Favyen Bastani , Songtao He , Satvat Jagwani , Mohammad Alizadeh , Hari Balakrishnan , Sanjay Chawla , Sam Madden , Mohammad Amin Sadeghi

Radar odometry estimation has emerged as a critical technique in the field of autonomous navigation, providing robust and reliable motion estimation under various environmental conditions. Despite its potential, the complex nature of radar…

Robotics · Computer Science 2024-04-08 Matteo Frosi , Mirko Usuelli , Matteo Matteucci

In the 21st century, Aerial and satellite images are information rich. They are also complex to analyze. For GIS systems, many features require fast and reliable extraction of open space area from high resolution satellite imagery. In this…

Computer Vision and Pattern Recognition · Computer Science 2022-02-03 B. G. Kodge , P. S. Hiremath

Large datasets, such as LAION-5B, contain a diverse distribution of images shared online. However, extraction of domain-specific subsets of large image corpora is challenging. The extraction approach based on an anchor dataset, combined…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Mikolaj Czerkawski , Alistair Francis

The study and prediction of space weather entails the analysis of solar images showing structures of the Sun's atmosphere. When imaged from the Earth's ground, images may be polluted by terrestrial clouds which hinder the detection of solar…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Amal Chaoui , Jay Paul Morgan , Adeline Paiement , Jean Aboudarham

The reconstructed images from the Synthetic Aperture Radar (SAR) data suffer from multiplicative noise as well as low contrast level. These two factors impact the quality of the SAR images significantly and prevent any attempt to extract…

Image and Video Processing · Electrical Eng. & Systems 2024-12-05 Shahrokh Hamidi

We synthesize both optical RGB and synthetic aperture radar (SAR) remote sensing images from land cover maps and auxiliary raster data using generative adversarial networks (GANs). In remote sensing, many types of data, such as digital…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Gerald Baier , Antonin Deschemps , Michael Schmitt , Naoto Yokoya

As the demand for autonomous navigation in off-road environments increases, the need for effective solutions to understand these surroundings becomes essential. In this study, we confront the inherent complexities of semantic segmentation…

Computer Vision and Pattern Recognition · Computer Science 2023-10-23 Peng Jiang , Srikanth Saripalli

Shellfish production constitutes an important sector for the economy of many Portuguese coastal regions, yet the challenge of shellfish biotoxin contamination poses both public health concerns and significant economic risks. Thus,…

Machine Learning · Computer Science 2023-11-28 Sergio Tavares , Pedro R. Costa , Ludwig Krippahl , Marta B. Lopes

In this article, we evaluate unsupervised anomaly detection methods in multispectral images obtained with a wavelength-independent synthetic aperture sensing technique, called Airborne Optical Sectioning (AOS). With a focus on search and…

Computer Vision and Pattern Recognition · Computer Science 2022-11-09 Francis Seits , Indrajit Kurmi , Oliver Bimber

Line detection is widely used in many robotic tasks such as scene recognition, 3D reconstruction, and simultaneous localization and mapping (SLAM). Compared to points, lines can provide both low-level and high-level geometrical information…

Robotics · Computer Science 2025-08-12 Xiao Lin , Chen Wang

Deep learning has not been routinely employed for semantic segmentation of seabed environment for synthetic aperture sonar (SAS) imagery due to the implicit need of abundant training data such methods necessitate. Abundant training data,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-02 Yung-Chen Sun , Isaac D. Gerg , Vishal Monga

Coastal erosion describes the displacement of land caused by destructive sea waves, currents or tides. Major efforts have been made to mitigate these effects using groins, breakwaters and various other structures. We try to address this…

Optimization and Control · Mathematics 2022-09-16 Luka Schlegel , Volker Schulz