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In the problem of spotlight mode airborne synthetic aperture radar (SAR) image formation, it is well-known that data collected over a wide azimuthal angle violate the isotropic scattering property typically assumed. Many techniques have…

Image and Video Processing · Electrical Eng. & Systems 2023-04-12 Victor Churchill , Anne Gelb

As a powerful all-weather Earth observation tool, synthetic aperture radar (SAR) remote sensing enables critical military reconnaissance, maritime surveillance, and infrastructure monitoring. Although Vision language models (VLMs) have made…

Computation and Language · Computer Science 2025-03-05 Zhiming Ma , Xiayang Xiao , Sihao Dong , Peidong Wang , HaiPeng Wang , Qingyun Pan

Composed image retrieval (CIR) enables users to search images using a reference image combined with textual modifications. Recent advances in vision-language models have improved CIR, but dataset limitations remain a barrier. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Pranavi Kolouju , Eric Xing , Robert Pless , Nathan Jacobs , Abby Stylianou

Remote Sensing Visual Question Answering (RSVQA) is a task that extracts information from satellite images to answer questions in natural language, aiding image interpretation. While several methods exist for optical images with varying…

Computer Vision and Pattern Recognition · Computer Science 2025-08-11 Lucrezia Tosato , Flora Weissgerber , Laurent Wendling , Sylvain Lobry

High quality perception is essential for autonomous driving (AD) systems. To reach the accuracy and robustness that are required by such systems, several types of sensors must be combined. Currently, mostly cameras and laser scanners…

Computer Vision and Pattern Recognition · Computer Science 2021-05-27 A. Ouaknine , A. Newson , J. Rebut , F. Tupin , P. Pérez

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

Cross-modal artificial intelligence, represented by visual language models, has achieved significant success in general image understanding. However, a fundamental cognitive inconsistency exists between general visual representation and…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Yi Yang , Xiaokun Zhang , Qingchen Fang , Jing Liu , Ziqi Ye , Rui Li , Li Liu , Haipeng Wang

Synthetic Aperture RADAR is a radar imaging technique in which the relative motion of the sensor is used to synthesize a very long antenna and obtain high spatial resolution. The increasing interest of the scientific community to simplify…

Signal Processing · Electrical Eng. & Systems 2018-06-05 Cataldo Guaragnella , Tiziana D'Orazio

Synthetic Aperture Radar (SAR) images contain a huge amount of information, however, the number of practical use-cases is limited due to the presence of speckle noise in them. In recent years, deep learning based techniques have brought…

Image and Video Processing · Electrical Eng. & Systems 2020-04-24 Shrey Dabhi , Kartavya Soni , Utkarsh Patel , Priyanka Sharma , Manojkumar Parmar

Synthetic Aperture Radar (SAR) data and Interferometric SAR (InSAR) products in particular, are one of the largest sources of Earth Observation data. InSAR provides unique information on diverse geophysical processes and geology, and on the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Nikolaos Ioannis Bountos , Ioannis Papoutsis , Dimitrios Michail , Andreas Karavias , Panagiotis Elias , Isaak Parcharidis

Change captioning has become essential for accurately describing changes in multi-temporal remote sensing data, providing an intuitive way to monitor Earth's dynamics through natural language. However, existing change captioning methods…

Computer Vision and Pattern Recognition · Computer Science 2025-01-15 Yuduo Wang , Weikang Yu , Pedram Ghamisi

The classification of large-scale high-resolution SAR land cover images acquired by satellites is a challenging task, facing several difficulties such as semantic annotation with expertise, changing data characteristics due to varying…

Signal Processing · Electrical Eng. & Systems 2020-01-09 Zhongling Huang , Corneliu Octavian Dumitru , Zongxu Pan , Bin Lei , Mihai Datcu

Synthetic aperture radar (SAR) image change detection is a critical yet challenging task in the field of remote sensing image analysis. The task is non-trivial due to the following challenges: Firstly, intrinsic speckle noise of SAR images…

Image and Video Processing · Electrical Eng. & Systems 2021-10-19 Yunhao Gao , Feng Gao , Junyu Dong , Qian Du , Heng-Chao Li

Few-shot action recognition (FSAR) has recently made notable progress through set matching and efficient adaptation of large-scale pre-trained models. However, two key limitations persist. First, existing set matching metrics typically rely…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Fei Long , Yao Zhang , Jiaming Lv , Jiangtao Xie , Peihua Li

Generating accurate, informative, and hallucination-free captions for charts remains challenging for vision language models, primarily due to the lack of large-scale, high-quality datasets of real-world charts. However, existing real-world…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Junyoung Lim , Jaewoo Ahn , Gunhee Kim

Synthetic Aperture Radar has been extensively used in numerous fields and can gather a wealth of information about the area of interest. This large scene data intensive technology puts a high value on automatic target recognition which can…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Guibin Zhao , Pengfei Li , Zhibo Zhang , Fusen Guo , Xueting Huang , Wei Xu , Jinyin Wang , Jianlong Chen

The absence of publicly available, large-scale, high-quality datasets for Synthetic Aperture Radar Automatic Target Recognition (SAR ATR) has significantly hindered the application of rapidly advancing deep learning techniques, which hold…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Yongxiang Liu , Weijie Li , Li Liu , Jie Zhou , Bowen Peng , Yafei Song , Xuying Xiong , Wei Yang , Tianpeng Liu , Zhen Liu , Xiang Li

Automatic Target Recognition (ATR) for military applications is one of the core processes towards enhancing intelligencer and autonomously operating military platforms. Spurred by this and given that Synthetic Aperture Radar (SAR) presents…

Computer Vision and Pattern Recognition · Computer Science 2020-12-15 O. Kechagias-Stamatis , N. Aouf

Zero-shot Image Captioning (ZIC) increasingly utilizes synthetic datasets generated by text-to-image (T2I) models to mitigate the need for costly manual annotation. However, these T2I models often produce images that exhibit semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-07-25 Si-Woo Kim , MinJu Jeon , Ye-Chan Kim , Soeun Lee , Taewhan Kim , Dong-Jin Kim

Automatic annotation of images with descriptive words is a challenging problem with vast applications in the areas of image search and retrieval. This problem can be viewed as a label-assignment problem by a classifier dealing with a very…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Amara Tariq , Hassan Foroosh