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A modified version of MRFFCM (Markov Random Field Fuzzy C means) based SAR (Synthetic aperture Radar) image change detection method is proposed in this paper. It involves three steps: Difference Image (DI) generation by using Gauss-log…

计算机视觉与模式识别 · 计算机科学 2015-06-05 Jismy Alphonse , Biju V. G.

Synthetic aperture radar (SAR) is a day or night any-weather imaging modality that is an important tool in remote sensing. Most existing SAR image formation methods result in a maximum a posteriori image which approximates the reflectivity…

应用统计 · 统计学 2020-07-14 Victor Churchill , Anne Gelb

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…

计算机视觉与模式识别 · 计算机科学 2023-07-19 Nicolae-Cătălin Ristea , Andrei Anghel , Mihai Datcu , Bertrand Chapron

Using integral transforms to the end of lines detection in images with complex background, makes the detection a hard task needing additional processing to manage the detection. As an integral transform, the Scale Space Radon Transform…

计算机视觉与模式识别 · 计算机科学 2023-11-16 Aicha Baya Goumeidane , Djemel Ziou , Nafaa Nacereddine

This paper proposes a new method for horizon detection called the multi-scale cross modal linear feature. This method integrates three different concepts related to the presence of horizon in maritime images to increase the accuracy of…

计算机视觉与模式识别 · 计算机科学 2017-01-31 D. K. Prasad , D. Rajan , C. K. Prasath , L. Rachmawati , E. Rajabaly , C. Quek

An algorithm based on compressive sensing (CS) is proposed for synthetic aperture radar (SAR) imaging of moving targets. The received SAR echo is decomposed into the sum of basis sub-signals, which are generated by discretizing the target…

信息论 · 计算机科学 2011-04-07 Jun Wang , Gang Li , Hao Zhang , Xiqin Wang

For an autonomous surface vessel (ASV) to dock, it must track other vessels close to the docking area. Kayaks present a particular challenge due to their proximity to the dock and relatively small size. Maritime target tracking has…

计算机视觉与模式识别 · 计算机科学 2025-02-26 Nicholas Dalhaug , Annette Stahl , Rudolf Mester , Edmund Førland Brekke

Weak Gaussian perturbations on a plane wave background could trigger lots of rogue waves, due to modulational instability. Numerical simulations showed that these rogue waves seemed to have similar unit structure. However, to the best of…

计算机视觉与模式识别 · 计算机科学 2022-05-11 Liwen Zou , XinHang Luo , Delu Zeng , Liming Ling , Li-Chen Zhao

Currently, reliable and accurate ship detection in optical remote sensing images is still challenging. Even the state-of-the-art convolutional neural network (CNN) based methods cannot obtain very satisfactory results. To more accurately…

计算机视觉与模式识别 · 计算机科学 2021-08-27 Linhao Li , Zhiqiang Zhou , Bo Wang , Lingjuan Miao , Hua Zong

Change detection is one of the fundamental applications of synthetic aperture radar (SAR) images. However, speckle noise presented in SAR images has a much negative effect on change detection. In this research, a novel two-phase…

计算机视觉与模式识别 · 计算机科学 2020-01-20 Xinzheng Zhang , Guo Liu , Ce Zhang , Peter M Atkinson , Xiaoheng Tan , Xin Jian , Xichuan Zhou , Yongming Li

Maritime surveillance is indispensable for civilian fields, including national maritime safeguarding, channel monitoring, and so on, in which synthetic aperture radar (SAR) ship target recognition is a crucial research field. The core…

图像与视频处理 · 电气工程与系统科学 2023-08-22 Chenwei Wang , Jifang Pei , Siyi Luo , Weibo Huo , Yulin Huang , Yin Zhang , Jianyu Yang

This research paper presents an innovative ship detection system tailored for applications like maritime surveillance and ecological monitoring. The study employs YOLOv8 and repurposed U-Net, two advanced deep learning models, to…

图像与视频处理 · 电气工程与系统科学 2025-03-20 Bibi Erum Ayesha , T. Satyanarayana Murthy , Palamakula Ramesh Babu , Ramu Kuchipudi

A method for segmenting water bodies in optical and synthetic aperture radar (SAR) satellite images is proposed. It makes use of the textural features of the different regions in the image for segmentation. The method consists in a…

计算机视觉与模式识别 · 计算机科学 2016-04-12 Victor Manuel San Martin , Alejandra Figliola

With the booming of Convolutional Neural Networks (CNNs), CNNs such as VGG-16 and ResNet-50 widely serve as backbone in SAR ship detection. However, CNN based backbone is hard to model long-range dependencies, and causes the lack of enough…

计算机视觉与模式识别 · 计算机科学 2022-09-22 Xiao Ke , Xiaoling Zhang , Tianwen Zhang , Jun Shi , Shunjun Wei

This paper presents five different statistical methods for ground scene prediction (GSP) in wavelength-resolution synthetic aperture radar (SAR) images. The GSP image can be used as a reference image in a change detection algorithm yielding…

图像与视频处理 · 电气工程与系统科学 2022-07-26 B. G. Palm , D. I. Alves , M. I. Pettersson , V. T. Vu , R. Machado , R. J. Cintra , F. M. Bayer , P. Dammert , H. Hellsten

Illegal, unreported, and unregulated (IUU) fishing causes global economic losses of 10-25 billion USD annually and undermines marine sustainability and governance. Synthetic Aperture Radar (SAR) provides reliable maritime surveillance under…

Change detection from synthetic aperture radar (SAR) imagery is a critical yet challenging task. Existing methods mainly focus on feature extraction in spatial domain, and little attention has been paid to frequency domain. Furthermore, in…

计算机视觉与模式识别 · 计算机科学 2022-02-16 Xiaofan Qu , Feng Gao , Junyu Dong , Qian Du , Heng-Chao Li

Rapid analysis of satellite imagery within minutes-to-hours of acquisition is increasingly vital for many remote sensing applications, and is an essential component for developing next-generation autonomous and distributed satellite…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Colin Laganier , Liam Fletcher , Elim Kwan , Richard Walters , Victoria Nockles

There have been intensive research interests in ship detection and segmentation due to high demands on a wide range of civil applications in the last two decades. However, existing approaches, which are mainly based on statistical…

计算机视觉与模式识别 · 计算机科学 2016-11-17 Alexander Kadyrov , Hui Yu , Honghai Liu

Illegal, unreported, and unregulated (IUU) fishing activities seriously affect various aspects of human life. However, traditional methods for detecting and monitoring IUU fishing activities at sea have limitations. Although synthetic…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Yanbing Bai , Siao Li , Rui-Yang Ju , Zihao Yang , Jinze Yu , Jen-Shiun Chiang