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The reconstructed images from the Synthetic Aperture Radar (SAR) data suffer from multiplicative noise as well as low contrast level. These two factors impact the quality of the SAR images significantly and prevent any attempt to extract…

图像与视频处理 · 电气工程与系统科学 2024-12-05 Shahrokh Hamidi

In this paper we investigate the use of discriminative model learning through Convolutional Neural Networks (CNNs) for SAR image despeckling. The network uses a residual learning strategy, hence it does not recover the filtered image, but…

计算机视觉与模式识别 · 计算机科学 2017-05-04 G. Chierchia , D. Cozzolino , G. Poggi , L. Verdoliva

Polarimetric synthetic aperture radar (PolSAR) image classification has been investigated vigorously in various remote sensing applications. However, it is still a challenging task nowadays. One significant barrier lies in the speckle…

计算机视觉与模式识别 · 计算机科学 2020-09-15 Haixia Bi , Jing Yao , Zhiqiang Wei , Danfeng Hong , Jocelyn Chanussot

Multilook processing is a widely used speckle reduction approach in synthetic aperture radar (SAR) imaging. Conventionally, it is achieved by incoherently summing of some independent low-resolution images formulated from overlapping…

信息论 · 计算机科学 2013-10-29 Jian Fang , Zongben Xu , Bingchen Zhang , Wen Hong , Yirong Wu

The data fusion technology aims to aggregate the characteristics of different data and obtain products with multiple data advantages. To solves the problem of reduced resolution of PolSAR images due to system limitations, we propose a fully…

图像与视频处理 · 电气工程与系统科学 2021-07-20 Liupeng Lin , Jie Li , Huanfeng Shen , Lingli Zhao , Qiangqiang Yuan , Xinghua Li

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…

图像与视频处理 · 电气工程与系统科学 2020-04-24 Shrey Dabhi , Kartavya Soni , Utkarsh Patel , Priyanka Sharma , Manojkumar Parmar

Speckle noise is a fundamental challenge in coherent imaging systems, significantly degrading image quality. Over the past decades, numerous despeckling algorithms have been developed for applications such as Synthetic Aperture Radar (SAR)…

信息论 · 计算机科学 2025-01-31 Ali Zafari , Shirin Jalali

Synthetic aperture radar (SAR) images are widely used in remote sensing. Interpreting SAR images can be challenging due to their intrinsic speckle noise and grayscale nature. To address this issue, SAR colorization has emerged as a research…

计算机视觉与模式识别 · 计算机科学 2023-10-16 Kangqing Shen , Gemine Vivone , Xiaoyuan Yang , Simone Lolli , Michael Schmitt

SAR (Synthetic Aperture Radar) imaging plays a central role in Remote Sensing due to, among other important features, its ability to provide high-resolution, day-and-night and almost weather-independent images. SAR images are affected from…

计算机视觉与模式识别 · 计算机科学 2017-04-21 Luis Gomez , Raydonal Ospina , Alejandro C. Frery

SAR despeckling is a key tool for Earth Observation. Interpretation of SAR images are impaired by speckle, a multiplicative noise related to interference of backscattering from the illuminated scene towards the sensor. Reducing the noise is…

图像与视频处理 · 电气工程与系统科学 2020-08-20 Sergio Vitale , Giampaolo Ferraioli , Vito Pascazio

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

Polarized color photography provides both visual textures and object surficial information in one single snapshot. However, the use of the directional polarizing filter array causes extremely lower photon count and SNR compared to…

图像与视频处理 · 电气工程与系统科学 2023-03-03 Zhuoxiao Li , Haiyang Jiang , Yinqiang Zheng

The annotation of polarimetric synthetic aperture radar (PolSAR) images is a labor-intensive and time-consuming process. Therefore, classifying PolSAR images with limited labels is a challenging task in remote sensing domain. In recent…

计算机视觉与模式识别 · 计算机科学 2024-08-09 Yuchen Wang , Ziyi Guo , Haixia Bi , Danfeng Hong , Chen Xu

Over the past decade, Interferometric Synthetic Aperture Radar (InSAR) has become a successful remote sensing technique. However, during the acquisition step, microwave reflections received at satellite are usually disturbed by strong…

图像与视频处理 · 电气工程与系统科学 2020-05-28 Xinyao Sun , Aaron Zimmer , Subhayan Mukherjee , Navaneeth Kamballur Kottayil , Parwant Ghuman , Irene Cheng

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…

图像与视频处理 · 电气工程与系统科学 2021-02-02 Andrew Rittenbach , John Paul Walters

Polarimetric imaging enables advanced vision applications such as normal estimation and de-reflection by capturing unique surface-material interactions. However, existing applications (alternatively called downstream tasks) rely on datasets…

计算机视觉与模式识别 · 计算机科学 2026-03-25 Yidong Luo , Chenggong Li , Yunfeng Song , Ping Wang , Boxin Shi , Junchao Zhang , Xin Yuan

This paper describes a novel projection algorithm, the Projection Onto Span Algorithm (POSA) for wavelet-based superresolution and removing speckle (in wavelet domain) of unknown variance from Synthetic Aperture Radar (SAR) images. Although…

计算机视觉与模式识别 · 计算机科学 2016-08-03 Mario Mastriani

The emergence of the single-chip polarized color sensor now allows for simultaneously capturing chromatic and polarimetric information of the scene on a monochromatic image plane. However, unlike the usual camera with an embedded…

计算机视觉与模式识别 · 计算机科学 2021-04-14 Sijia Wen , Yinqiang Zheng , Feng Lu

Deep learning (DL) in remote sensing has nowadays become an effective operative tool: it is largely used in applications such as change detection, image restoration, segmentation, detection and classification. With reference to synthetic…

图像与视频处理 · 电气工程与系统科学 2020-11-19 Sergio Vitale , Giampaolo Ferraioli , Vito Pascazio

Coherent imaging systems, such as medical ultrasound and synthetic aperture radar (SAR), are subject to corruption from speckle due to sub-resolution scatterers. Since speckle is multiplicative in nature, the constituent image regions…

图像与视频处理 · 电气工程与系统科学 2023-11-21 Soumee Guha , Scott T. Acton