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Unmanned Aerial Vehicles (UAVs) are crucial in Search and Rescue (SAR) missions due to their ability to monitor vast maritime areas. However, small objects often remain difficult to detect from high altitudes due to low object-to-background…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Sakib Ahmed , Oscar Pizarro

Synthetic aperture radar (SAR) images are widely used in target recognition tasks nowadays. In this letter, we propose an automatic approach for radar shadow detection and extraction from SAR images utilizing geometric projections along…

Computer Vision and Pattern Recognition · Computer Science 2014-12-16 V. B. S. Prasath , O. Haddad

Synthetic aperture radar (SAR) is considered being a good option for earth observation with its unique advantages. In this paper, we proposed an adaptive ship detector using full-polarization SAR images. First, by thoroughly investigating…

Signal Processing · Electrical Eng. & Systems 2021-12-08 Chuan Zhang , Gui Gao , Linlin Zhang , C. Chen , S. Gao , Libo Yao , Shiquan Gou

Marine remote sensing enhances maritime surveillance, environmental monitoring, and naval operations. Vessel length estimation, a key component of this technology, supports effective maritime surveillance by empowering features such as…

Neural and Evolutionary Computing · Computer Science 2025-04-29 Mohammad Amir Fallah , Mehdi Monemi , Matti Latva-aho

Ship detection is of great importance and full of challenges in the field of remote sensing. The complexity of application scenarios, the redundancy of detection region, and the difficulty of dense ship detection are all the main obstacles…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 Xue Yang , Hao Sun , Xian Sun , Menglong Yan , Zhi Guo , Kun Fu

Recent advancements in synthetic aperture radar (SAR) ship detection using deep learning have significantly improved accuracy and speed, yet effectively detecting small objects in complex backgrounds with fewer parameters remains a…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Hongyu Chen , Chengcheng Chen , Fei Wang , Yuhu Shi , Weiming Zeng

In this paper, we propose a robust real time detection and tracking method for detecting ships in a coastal video sequences. Since coastal scenarios are unpredictable and scenes have dynamic properties it is essential to apply detection…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Mohammad Hassan Saghafi , Seyed Majid Noorhosseini , Seyed Abolfazl Seyed Javadein , Hadi Khalili

Synthetic aperture radar (SAR) has been extensively utilized in maritime domains due to its all-weather, all-day monitoring capabilities, particularly exhibiting significant value in ship detection. In recent years, deep learning methods…

Image and Video Processing · Electrical Eng. & Systems 2024-01-17 Hecheng Jia , Feng Xu

Unsustainable fishing practices worldwide pose a major threat to marine resources and ecosystems. Identifying vessels that do not show up in conventional monitoring systems -- known as ``dark vessels'' -- is key to managing and securing the…

Computer Vision and Pattern Recognition · Computer Science 2022-11-09 Fernando Paolo , Tsu-ting Tim Lin , Ritwik Gupta , Bryce Goodman , Nirav Patel , Daniel Kuster , David Kroodsma , Jared Dunnmon

In an era where maritime infrastructures are crucial, advanced situational awareness solutions are increasingly important. The use of optical camera systems can allow real-time usage of maritime footage. This thesis presents an…

Computer Vision and Pattern Recognition · Computer Science 2024-10-08 Borja Carrillo Perez

Synthetic Aperture Radar (SAR) offers a unique capability for all-weather, space-based maritime activity monitoring by capturing and imaging strong reflections from ships at sea. A well-defined challenge in this domain is ship type…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Benyamin Hosseiny , Kamirul Kamirul , Odysseas Pappas , Alin Achim

Synthetic Aperture Radar (SAR) plays a critical role in maritime surveillance, yet deep learning for SAR analysis is limited by the lack of pixel-level annotations. This paper explores how general-purpose vision foundation models can enable…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Islam Mansour , Francescopaolo Sica , Michael Schmitt

Ship detection in Synthetic Aperture Radar (SAR) imagery is fundamentally challenged by inherent coherent speckle noise, complex coastal clutter, and the prevalence of small-scale targets. Conventional detectors, primarily designed for…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Fenghao Song , Shaojing Yang , Xi Zhou

Deep learning methods have made significant progress in ship detection in synthetic aperture radar (SAR) images. The pretraining technique is usually adopted to support deep neural networks-based SAR ship detectors due to the scarce labeled…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Wei Bao , Meiyu Huang , Yaqin Zhang , Yao Xu , Xuejiao Liu , Xueshuang Xiang

The cable-based arrestment systems are integral to the launch and recovery of aircraft onboard carriers and on expeditionary land-based installations. These modern arrestment systems rely on various mechanisms to absorb energy from an…

Computer Vision and Pattern Recognition · Computer Science 2024-08-31 Ari Goodman , Glenn Shevach , Sean Zabriskie , Chris Thajudeen

Synthetic Aperture Radar (SAR) imagery is the primary data type used for sea ice mapping due to its spatio-temporal coverage and the ability to detect sea ice independent of cloud and lighting conditions. Automatic sea ice detection using…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Martin S J Rogers , Maria Fox , Andrew Fleming , Louisa van Zeeland , Jeremy Wilkinson , J. Scott Hosking

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

This paper introduces Bayesian supervised and unsupervised segmentation algorithms aimed at oceanic segmentation of SAR images. The data term, \emph{i.e}., the density of the observed backscattered signal given the region, is modeled by a…

Applications · Statistics 2010-07-29 Sónia Pelizzari , José M. Bioucas-Dias

7,651 cases of Search and Rescue Missions (SAR) were reported by the United States Coast Guard in 2024, with over 1322 SAR helicopters deployed in the 6 first months alone. Through the utilizations of YOLO, we were able to run different…

Computer Vision and Pattern Recognition · Computer Science 2024-08-28 Miguel Tjia , Artem Kim , Elaine Wynette Wijaya , Hanna Tefara , Kevin Zhu

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