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Recently, considerable effort has been devoted to deep domain adaptation in computer vision and machine learning communities. However, most of existing work only concentrates on learning shared feature representation by minimizing the…

Machine Learning · Computer Science 2019-04-24 Chao Chen , Zhihong Chen , Boyuan Jiang , Xinyu Jin

Due to the imbalanced and limited data, semi-supervised medical image segmentation methods often fail to produce superior performance for some specific tailed classes. Inadequate training for those particular classes could introduce more…

Computer Vision and Pattern Recognition · Computer Science 2022-09-02 Hritam Basak , Sagnik Ghosal , Ram Sarkar

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

Traditional change detection methods based on convolutional neural networks (CNNs) face the challenges of speckle noise and deformation sensitivity for synthetic aperture radar images. To mitigate these issues, we proposed a Multiscale…

Computer Vision and Pattern Recognition · Computer Science 2021-09-28 Yunhao Gao , Feng Gao , Junyu Dong , Heng-Chao Li

Facial Expressions Recognition(FER) on low-resolution images is necessary for applications like group expression recognition in crowd scenarios(station, classroom etc.). Classifying a small size facial image into the right expression…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Wei Jing , Feng Tian , Jizhong Zhang , Kuo-Ming Chao , Zhenxin Hong , Xu Liu

Open set recognition (OSR) is a critical aspect of machine learning, addressing the challenge of detecting novel classes during inference. Within the realm of deep learning, neural classifiers trained on a closed set of data typically…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Jiawen Xu , Margret Keuper

Satellite-based Synthetic Aperture Radar (SAR) images can be used as a source of remote sensed imagery regardless of cloud cover and day-night cycle. However, the speckle noise and varying image acquisition conditions pose a challenge for…

Computer Vision and Pattern Recognition · Computer Science 2023-11-03 Janne Alatalo , Tuomo Sipola , Mika Rantonen

Effective oil spill segmentation in Synthetic Aperture Radar (SAR) images is critical for marine oil pollution cleanup, and proper image representation is helpful for accurate image segmentation. In this paper, we propose an effective oil…

Computer Vision and Pattern Recognition · Computer Science 2023-05-01 Fang Chen , Heiko Balzter , Peng Ren , Huiyu Zhou

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

Shape deformation of targets in SAR image due to random orientation and partial information loss caused by occlusion of the radar signal, is an essential challenge in SAR ship detection. In this paper, we propose a data augmentation method…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Taeyong Song , Sunok Kim , SungTai Kim , Jaeseok Lee , Kwanghoon Sohn

Recent blind super-resolution (SR) methods typically consist of two branches, one for degradation prediction and the other for conditional restoration. However, our experiments show that a one-branch network can achieve comparable…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Liangbin Xie , Xintao Wang , Chao Dong , Zhongang Qi , Ying Shan

In marine surveillance, applications span military and civilian domains, including ship detection, marine traffic control, and disaster management. Optical and hyperspectral satellites are key for this purpose. This paper focuses on ship…

Image and Video Processing · Electrical Eng. & Systems 2024-10-16 Alyazia Al Shamsi , Alavikunhu Panthakkan , Saeed Al Mansoori , Hussain Al Ahmad

Synthetic Aperture Radar (SAR) imagery provides all-weather, all-day, and high-resolution imaging capabilities but its unique imaging mechanism makes interpretation heavily reliant on expert knowledge, limiting interpretability, especially…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Ruixi You , Hecheng Jia , Feng Xu

To translate synthetic aperture radar (SAR) image into interpretable forms for human understanding is the ultimate goal of SAR advanced information retrieval. Existing methods mainly focus on 3D surface reconstruction or local geometric…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Ziyu Yue , Ruixi You , Feng Xu

Simulated data-assisted SAR target recognition methods are the research hotspot currently, devoted to solving the problem of limited samples. Existing works revolve around simulated images, but the large amount of irrelevant information…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Chenxi Zhao , Daochang Wang , Siqian Zhang , Gangyao Kuang

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…

Computer Vision and Pattern Recognition · Computer Science 2020-01-20 Xinzheng Zhang , Guo Liu , Ce Zhang , Peter M Atkinson , Xiaoheng Tan , Xin Jian , Xichuan Zhou , Yongming Li

Existing deep trackers mainly use convolutional neural networks pre-trained for generic object recognition task for representations. Despite demonstrated successes for numerous vision tasks, the contributions of using pre-trained deep…

Computer Vision and Pattern Recognition · Computer Science 2019-04-04 Xin Li , Chao Ma , Baoyuan Wu , Zhenyu He , Ming-Hsuan Yang

Traditional ship detection methods primarily rely on single-modal approaches, such as visible or infrared images, which limit their application in complex scenarios involving varying lighting conditions and heavy fog. To address this issue,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Yanyin Guo , Runxuan An , Junwei Li , Zhiyuan Zhang

Generalized few-shot object detection aims to achieve precise detection on both base classes with abundant annotations and novel classes with limited training data. Existing approaches enhance few-shot generalization with the sacrifice of…

Computer Vision and Pattern Recognition · Computer Science 2023-03-20 Jiawei Ma , Yulei Niu , Jincheng Xu , Shiyuan Huang , Guangxing Han , Shih-Fu Chang

This letter presents an effective method for assessing the feasibility of detecting ocean ships using spaceborne synthetic aperture radar (SAR). The technique employs the minimum detectable radar cross-section criterion under specified…

Signal Processing · Electrical Eng. & Systems 2025-06-18 Anatolii Kononov