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Synthetic aperture radar (SAR) images are affected by a spatially-correlated and signal-dependent noise called speckle, which is very severe and may hinder image exploitation. Despeckling is an important task that aims at removing such…

Image and Video Processing · Electrical Eng. & Systems 2021-05-04 Giulia Fracastoro , Enrico Magli , Giovanni Poggi , Giuseppe Scarpa , Diego Valsesia , Luisa Verdoliva

Cost-effective localization methods for Autonomous Underwater Vehicle (AUV) navigation are key for ocean monitoring and data collection at high resolution in time and space. Algorithmic solutions suitable for real-time processing that…

Robotics · Computer Science 2025-03-12 Ellen Davenport , Khoa Nguyen , Junsu Jang , Clair Ma , Sean Fish , Luc Lenain , Florian Meyer

Huge imbalance of different scenes' sample numbers seriously reduces Synthetic Aperture Radar (SAR) ship detection accuracy. Thus, to solve this problem, this letter proposes a Balance Scene Learning Mechanism (BSLM) for offshore and…

Computer Vision and Pattern Recognition · Computer Science 2020-09-22 Tianwen Zhang , Xiaoling Zhang , Jun Shi , Shunjun Wei , Jianguo Wang , Jianwei Li , Hao Su , Yue Zhou

High-resolution imagery plays a critical role in improving the performance of visual recognition tasks such as classification, detection, and segmentation. In many domains, including remote sensing and surveillance, low-resolution images…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Ch Muhammad Awais , Marco Reggiannini , Davide Moroni , Oktay Karakus

Images generated by high-resolution SAR have vast areas of application as they can work better in adverse light and weather conditions. One such area of application is in the military systems. This study is an attempt to explore the…

Image and Video Processing · Electrical Eng. & Systems 2023-03-29 Aakash Singh , Vivek Kumar Singh

The global expansion of maritime activities and the development of the Automatic Identification System (AIS) have driven the advances in maritime monitoring systems in the last decade. Monitoring vessel behavior is fundamental to safeguard…

Machine Learning · Computer Science 2020-04-09 Lucas May Petry , Amilcar Soares , Vania Bogorny , Bruno Brandoli , Stan Matwin

Satellite-based onboard data processing is crucial for time-sensitive applications requiring timely and efficient rapid response. Advances in edge artificial intelligence are shifting computational power from ground-based centers to…

Computer Vision and Pattern Recognition · Computer Science 2024-11-07 Roberto Del Prete , Manuel Salvoldi , Domenico Barretta , Nicolas Longépé , Gabriele Meoni , Arnon Karnieli , Maria Daniela Graziano , Alfredo Renga

The recent and ongoing expansion of marine infrastructure, including offshore wind farms, oil and gas platforms, artificial islands, and aquaculture facilities, highlights the need for effective monitoring systems. The development of robust…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Robin Spanier , Thorsten Hoeser , Claudia Kuenzer

Most of the recent successful methods in accurate object detection build on the convolutional neural networks (CNN). However, due to the lack of scale normalization in CNN-based detection methods, the activated channels in the feature space…

Computer Vision and Pattern Recognition · Computer Science 2018-08-16 Yonghyun Kim , Bong-Nam Kang , Daijin Kim

As a cost-effective and robust technology, automotive radar has seen steady improvement during the last years, making it an appealing complement to commonly used sensors like camera and LiDAR in autonomous driving. Radio frequency data with…

Computer Vision and Pattern Recognition · Computer Science 2024-12-23 Yuzhi Wu , Jun Liu , Guangfeng Jiang , Weijian Liu , Danilo Orlando

Synthetic Aperture Radar (SAR) images are usually degraded by a multiplicative noise known as speckle which makes processing and interpretation of SAR images difficult. In this paper, we introduce a transformer-based network for SAR image…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Malsha V. Perera , Wele Gedara Chaminda Bandara , Jeya Maria Jose Valanarasu , Vishal M. Patel

Incoherent processing for synthetic aperture radar (SAR) is a promising approach that enables low implementation costs, simplified hardware designs and operations in high frequency spectrum compared to the conventional imaging methods using…

Signal Processing · Electrical Eng. & Systems 2023-06-30 Samia Kazemi , Bariscan Yonel , Birsen Yazici

Convolutional neural networks (CNN) have been successfully employed to tackle several remote sensing tasks such as image classification and show better performance than previous techniques. For the radar imaging community, a natural…

Signal Processing · Electrical Eng. & Systems 2018-07-03 Jingkun Gao , Bin Deng , Yuliang Qin , Hongqiang Wang , Xiang Li

The unique cost, flexibility, speed, and efficiency of modern UAVs make them an attractive choice in many applications in contemporary society. This, however, causes an ever-increasing number of reported malicious or accidental incidents,…

Artificial Intelligence · Computer Science 2024-10-22 Nikos Sakellariou , Antonios Lalas , Konstantinos Votis , Dimitrios Tzovaras

Convolutional Neural Networks (CNNs) have been consistently proved state-of-the-art results in image Super-Resolution (SR), representing an exceptional opportunity for the remote sensing field to extract further information and knowledge…

Image and Video Processing · Electrical Eng. & Systems 2020-11-02 Francesco Salvetti , Vittorio Mazzia , Aleem Khaliq , Marcello Chiaberge

Synthetic Aperture Radar (SAR) imaging is capable of observing objects in nearly all weather and illumination conditions and has become an indispensable means of information acquisition for analysis and recognition of objects and scenes.…

Image and Video Processing · Electrical Eng. & Systems 2026-03-03 Jie Zhou , Yongxiang Liu , Li Liu , Weijie Li , Bowen Peng , Yafei Song , Gangyao Kuang , Xiang Li

This paper discusses change detection in SAR time-series. Firstly, several statistical properties of the coefficient of variation highlight its pertinence for change detection. Then several criteria are proposed. The coefficient of…

Data Analysis, Statistics and Probability · Physics 2020-05-19 Elise Colin Koeniguer , Jean-Marie Nicolas

Human Activity Recognition (HAR) simply refers to the capacity of a machine to perceive human actions. HAR is a prominent application of advanced Machine Learning and Artificial Intelligence techniques that utilize computer vision to…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Niloy Sikder , Md. Sanaullah Chowdhury , Abu Shamim Mohammad Arif , Abdullah-Al Nahid

One of the greatest challenges for detecting moving objects in the solar system from wide-field survey data is determining whether a signal indicates a true object or is due to some other source, like noise. Object verification has relied…

Removing speckle noise from SAR images is still an open issue. It is well know that the interpretation of SAR images is very challenging and despeckling algorithms are necessary to improve the ability of extracting information. An urban…

Image and Video Processing · Electrical Eng. & Systems 2020-01-17 Giampaolo Ferraioli , Vito Pascazio , Sergio Vitale