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Accurate change detection from satellite imagery is essential for monitoring rapid mass-movement hazards such as snow avalanches, which increasingly threaten human life, infrastructure, and ecosystems due to their rising frequency and…

计算机视觉与模式识别 · 计算机科学 2026-03-25 Mattia Gatti , Alberto Mariani , Ignazio Gallo , Fabiano Monti

In synthetic aperture radar (SAR), images are formed by focusing the response of stationary objects to a single spatial location. On the other hand, moving targets cause phase errors in the standard formation of SAR images that cause…

信息论 · 计算机科学 2013-02-20 Gregory E. Newstadt , Edmund G. Zelnio , Alfred O. Hero

Stack filters are a special case of non-linear filters. They have a good performance for filtering images with different types of noise while preserving edges and details. A stack filter decomposes an input image into several binary images…

计算机视觉与模式识别 · 计算机科学 2012-07-19 Maria E. Buemi , Marta Mejail , Julio Jacobo , Alejandro C. Frery , Heitor S. Ramos

It is a challenging problem to detect and recognize targets on complex large-scene Synthetic Aperture Radar (SAR) images. Recently developed deep learning algorithms can automatically learn the intrinsic features of SAR images, but still…

计算机视觉与模式识别 · 计算机科学 2022-01-25 Siyan Li , Yue Xiao , Yuhang Zhang , Lei Chu , Robert C. Qiu

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

图像与视频处理 · 电气工程与系统科学 2022-01-25 Yunhao Gao , Feng Gao , Junyu Dong , Heng-Chao Li

Optical image data have been used by the Remote Sensing workforce to study land use and cover since such data is easily interpretable. Synthetic Aperture Radar (SAR) has the characteristic of obtaining images during all-day, all-weather and…

图像与视频处理 · 电气工程与系统科学 2021-06-04 Battula Balnarsaiah , G Rajitha

Synthetic Aperture Radar (SAR) images are inherently corrupted by speckle noise, limiting their utility in high-precision applications. While deep learning methods have shown promise in SAR despeckling, most methods employ a single unified…

计算机视觉与模式识别 · 计算机科学 2025-11-11 Ziqing Ma , Chang Yang , Zhichang Guo , Yao Li

Synthetic aperture radar (SAR) has a pivotal role as a remote imaging method. Obtained by means of coherent illumination, SAR images are contaminated with speckle noise. The statistical modeling of such contamination is well described…

统计计算 · 统计学 2012-07-11 Renato J. Cintra , Abraão D. C. Nascimento , Alejandro C. Frery

In recent years, machine learning (ML) algorithms have become widespread in all the fields of remote sensing (RS) and earth observation (EO). This has allowed the rapid development of new procedures to solve problems affecting these…

人工智能 · 计算机科学 2024-10-28 Alessandro Sebastianelli , Maria Pia Del Rosso , Silvia Liberata Ullo , Paolo Gamba

3D reconstruction of a scene from Synthetic Aperture Radar (SAR) images mainly relies on interferometric measurements, which involve strict constraints on the acquisition process. These last years, progress in deep learning has…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Emile Barbier--Renard , Florence Tupin , Nicolas Trouvé , Loïc Denis

Synthetic Aperture Radar SAR Automatic Target Recognition ATR is a key technique of remote-sensing image recognition which can be supported by deep neural networks The existing works of SAR ATR mostly focus on improving the accuracy of the…

计算机视觉与模式识别 · 计算机科学 2024-02-02 Jacob Fein-Ashley , Tian Ye , Rajgopal Kannan , Viktor Prasanna , Carl Busart

In synthetic aperture radar (SAR) image change detection, it is quite challenging to exploit the changing information from the noisy difference image subject to the speckle. In this paper, we propose a multi-scale spatial pooling (MSSP)…

计算机视觉与模式识别 · 计算机科学 2020-05-25 Jia-Wei Chen , Rongfang Wang , Fan Ding , Bo Liu , Licheng Jiao , Jie Zhang

In this paper, we propose a novel concept of cross-learning, in order to improve SAR images by learning from the camera images. We use a multi-level abstraction approach to materialise knowledge transfer between the two modalities. We also…

信号处理 · 电气工程与系统科学 2021-04-13 Shahzad Gishkori , David Wright , Liam Daniel , Marina Gashinova , Bernard Mulgrew

Image Super-Resolution (SR) provides a promising technique to enhance the image quality of low-resolution optical sensors, facilitating better-performing target detection and autonomous navigation in a wide range of robotics applications.…

计算机视觉与模式识别 · 计算机科学 2020-12-08 Fan Wang , Jiangxin Yang , Yanlong Cao , Yanpeng Cao , Michael Ying Yang

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…

信号处理 · 电气工程与系统科学 2020-01-09 Zhongling Huang , Corneliu Octavian Dumitru , Zongxu Pan , Bin Lei , Mihai Datcu

Among underwater perceptual sensors, imaging sonar has been highlighted for its perceptual robustness underwater. The major challenge of imaging sonar, however, arises from the difficulty in defining visual features despite limited…

机器人学 · 计算机科学 2018-10-19 Sejin Lee , Byungjae Park , Ayoung Kim

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…

计算机视觉与模式识别 · 计算机科学 2021-09-28 Yunhao Gao , Feng Gao , Junyu Dong , Heng-Chao Li

This letter presents a method of synthetic aperture radar (SAR) image despeckling aimed to preserve the detail information while suppressing speckle noise. This method combines the nonlocal self-similarity partition and a proposed modified…

计算机视觉与模式识别 · 计算机科学 2016-11-24 Chengwei Sang , Hong Sun , Quisong Xia

A new fangled method for ship wake detection in synthetic aperture radar (SAR) images is explored here. Most of the detection procedure applies the Radon transform as its properties outfit more than any other transformation for the…

计算机视觉与模式识别 · 计算机科学 2009-11-04 M. Krishnaveni , Suresh Kumar Thakur , P. Subashini

The effective combination of the complementary information provided by the huge amount of unlabeled multi-sensor data (e.g., Synthetic Aperture Radar (SAR) and optical images) is a critical topic in remote sensing. Recently, contrastive…

图像与视频处理 · 电气工程与系统科学 2021-10-11 Yuxing Chen , Lorenzo Bruzzone