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A deep neural networks based method is proposed to convert single polarization grayscale SAR image to fully polarimetric. It consists of two components: a feature extractor network to extract hierarchical multi-scale spatial features of…

Computer Vision and Pattern Recognition · Computer Science 2017-07-25 Qian Song , Feng Xu , Ya-Qiu Jin

Ship target recognition is a vital task in synthetic aperture radar (SAR) imaging applications. Although convolutional neural networks have been successfully employed for SAR image target recognition, surpassing traditional algorithms, most…

Signal Processing · Electrical Eng. & Systems 2023-05-16 Dandan Zhao , Zhe Zhang , Dongdong Lu , Jian Kang , Xiaolan Qiu , Yirong Wu

This paper proposes an artificial neural network to determine orientation using polarized skylight. This neural network has specific dilated convolution, which can extract light intensity information of different polarization directions.…

Computer Vision and Pattern Recognition · Computer Science 2022-02-23 Huaju Liang , Hongyang Bai , Ke Hu , Xinbo Lv

Polarimetric synthetic aperture radar (PolSAR) images are widely used in disaster detection and military reconnaissance and so on. However, their interpretation faces some challenges, e.g., deficiency of labeled data, inadequate utilization…

Image and Video Processing · Electrical Eng. & Systems 2019-06-11 Qigong Sun , Xiufang Li , Lingling Li , Xu Liu , Fang Liu , Licheng Jiao

This paper studies a practically meaningful ship detection problem from synthetic aperture radar (SAR) images by the neural network. We broadly extract different types of SAR image features and raise the intriguing question that whether…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Yuwen Deng , Donghai Guan , Yanyu Chen , Weiwei Yuan , Jiemin Ji , Mingqiang Wei

Despeckling is a crucial noise reduction task in improving the quality of synthetic aperture radar (SAR) images. Directly obtaining noise-free SAR images is a challenging task that has hindered the development of accurate despeckling…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Shunya Kato , Masaki Saito , Katsuhiko Ishiguro , Sol Cummings

Deep learning (DL) has emerged as a powerful tool for Synthetic Aperture Radar (SAR) ship classification. This survey comprehensively analyzes the diverse DL techniques employed in this domain. We identify critical trends and challenges,…

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

Synthetic Aperture Radar (SAR) imaging systems operate by emitting radar signals from a moving object, such as a satellite, towards the target of interest. Reflected radar echoes are received and later used by image formation algorithms to…

Image and Video Processing · Electrical Eng. & Systems 2021-02-02 Andrew Rittenbach , John Paul Walters

Deep unfolding networks have recently emerged as a promising approach for synthetic aperture radar (SAR) imaging. However, baseline unfolding networks, typically derived from iterative reconstruction algorithms such as the alternating…

Signal Processing · Electrical Eng. & Systems 2025-06-27 Shiping Fu , Yufan Chen , Zhe Zhang , Xiaolan Qiu , Qixiang Ye

In current synthetic aperture radar (SAR) object classification, one of the major challenges is the severe overfitting issue due to the limited dataset (few-shot) and noisy data. Considering the advantages of knowledge distillation as a…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Bo Xu , Hao Zheng , Zhigang Hu , Liu Yang , Meiguang Zheng

Spaceborne synthetic aperture radar (SAR) can provide accurate images of the ocean surface roughness day-or-night in nearly all weather conditions, being an unique asset for many geophysical applications. Considering the huge amount of data…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Nicolae-Cătălin Ristea , Andrei Anghel , Mihai Datcu , Bertrand Chapron

Integrating the special electromagnetic characteristics of Synthetic Aperture Radar (SAR) in deep neural networks is essential in order to enhance the explainability and physics awareness of deep learning. In this paper, we first propose a…

Image and Video Processing · Electrical Eng. & Systems 2023-01-10 Zhongling Huang , Xiwen Yao , Ying Liu , Corneliu Octavian Dumitru , Mihai Datcu , Junwei Han

Most existing synthetic aperture radar (SAR) ship classification technologies heavily rely on correctly labeled data, ignoring the discriminative features of unlabeled SAR ship images. Even though researchers try to enrich CNN-based…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Xianting Feng , Hao zheng , Zhigang Hu , Liu Yang , Meiguang Zheng

Synthetic Aperture Radar (SAR) data enables large-scale surveillance of maritime vessels. However, near-real-time monitoring is currently constrained by the need to downlink all raw data, perform image focusing, and subsequently analyze it…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Fabian Kresse , Georgios Pilikos , Mario Azcueta , Nicolas Floury

We propose a deep learning framework to detect and categorize oil spills in synthetic aperture radar (SAR) images at a large scale. By means of a carefully designed neural network model for image segmentation trained on an extensive…

Computer Vision and Pattern Recognition · Computer Science 2020-06-25 Filippo Maria Bianchi , Martine M. Espeseth , Njål Borch

Benefited from the rapid and sustainable development of synthetic aperture radar (SAR) sensors, change detection from SAR images has received increasing attentions over the past few years. Existing unsupervised deep learning-based methods…

Image and Video Processing · Electrical Eng. & Systems 2022-03-15 Junjie Wang , Feng Gao , Junyu Dong , Qian Du , Heng-Chao Li

Deep Learning is gaining traction with geophysics community to understand subsurface structures, such as fault detection or salt body in seismic data. This study describes using deep learning method for iceberg or ship recognition with…

Machine Learning · Computer Science 2018-12-19 Cheng Zhan , Licheng Zhang , Zhenzhen Zhong , Sher Didi-Ooi , Youzuo Lin , Yunxi Zhang , Shujiao Huang , Changchun Wang

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

Synthetic Aperture Radar (SAR) imagery has diverse applications in land and marine surveillance. Unlike electro-optical (EO) systems, these systems are not affected by weather conditions and can be used in the day and night times. With the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-23 Abu Md Niamul Taufique , Navya Nagananda , Andreas Savakis

Camera and Lidar processing have been revolutionized with the rapid development of deep learning model architectures. Automotive radar is one of the crucial elements of automated driver assistance and autonomous driving systems. Radar still…

Computer Vision and Pattern Recognition · Computer Science 2021-03-08 Farzan Erlik Nowruzi , Dhanvin Kolhatkar , Prince Kapoor , Elnaz Jahani Heravi , Fahed Al Hassanat , Robert Laganiere , Julien Rebut , Waqas Malik
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