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Reducing speckle and limiting the variations of the physical parameters in Synthetic Aperture Radar (SAR) images is often a key-step to fully exploit the potential of such data. Nowadays, deep learning approaches produce state of the art…

图像与视频处理 · 电气工程与系统科学 2022-07-25 Inès Meraoumia , Emanuele Dalsasso , Loïc Denis , Florence Tupin

This paper presents two approaches for filter design based on stochastic distances for intensity speckle reduction. A window is defined around each pixel, overlapping samples are compared and only those which pass a goodness-of-fit test are…

信息论 · 计算机科学 2013-08-21 Leonardo Torres , Alejandro C. Frery

We consider the problem in Synthetic Aperture RADAR (SAR) of identifying and classifying objects located on the ground by means of Convolutional Neural Networks (CNNs). Specifically, we adopt a single scattering approximation to classify…

计算机视觉与模式识别 · 计算机科学 2025-08-07 Romina Gaburro , Patrick Healy , Shraddha Naidu , Clifford Nolan

Speckle filtering is generally a prerequisite to the analysis of synthetic aperture radar (SAR) images. Tremendous progress has been achieved in the domain of single-image despeckling. Latest techniques rely on deep neural networks to…

图像与视频处理 · 电气工程与系统科学 2023-02-08 Inès Meraoumia , Emanuele Dalsasso , Loïc Denis , Rémy Abergel , Florence Tupin

Contrast and quality of ultrasound images are adversely affected by the excessive presence of speckle. However, being an inherent imaging property, speckle helps in tissue characterization and tracking. Thus, despeckling of the ultrasound…

计算机视觉与模式识别 · 计算机科学 2018-01-11 Deepak Mishra , Santanu Chaudhury , Mukul Sarkar , Arvinder Singh Soin

Deep learning (DL) has arguably emerged as the method of choice for the detection and segmentation of biological structures in microscopy images. However, DL typically needs copious amounts of annotated training data that is for biomedical…

图像与视频处理 · 电气工程与系统科学 2020-03-20 Mangal Prakash , Tim-Oliver Buchholz , Manan Lalit , Pavel Tomancak , Florian Jug , Alexander Krull

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

In this paper, a new probability density function (pdf) is proposed to model the statistics of wavelet coefficients, and a simple Kalman's filter is derived from the new pdf using Bayesian estimation theory. Specifically, we decompose the…

计算机视觉与模式识别 · 计算机科学 2016-08-03 Mario Mastriani , Alberto E. Giraldez

In this paper, we propose a stereo radargrammetry method using deep learning from airborne Synthetic Aperture Radar (SAR) images. Deep learning-based methods are considered to suffer less from geometric image modulation, while there is no…

计算机视觉与模式识别 · 计算机科学 2025-05-30 Tatsuya Sasayama , Shintaro Ito , Koichi Ito , Takafumi Aoki

Deep learning has demonstrated its power in image rectification by leveraging the representation capacity of deep neural networks via supervised training based on a large-scale synthetic dataset. However, the model may overfit the synthetic…

计算机视觉与模式识别 · 计算机科学 2021-06-21 Jinlong Fan , Jing Zhang , Dacheng Tao

The analysis of ocean surface is widely performed using synthetic aperture radar (SAR) imagery as it yields information for wide areas under challenging weather conditions, during day or night, etc. Speckle noise constitutes however the…

图像与视频处理 · 电气工程与系统科学 2020-12-15 Oktay Karakuş , Igor Rizaev , Alin Achim

Ship detection from satellite imagery using Deep Learning (DL) is an indispensable solution for maritime surveillance. However, applying DL models trained on one dataset to others having differences in spatial resolution and radiometric…

计算机视觉与模式识别 · 计算机科学 2024-05-24 Tran-Vu La , Minh-Tan Pham , Marco Chini

In spectroscopic experiments, data acquisition in multi-dimensional phase space may require long acquisition time, owing to the large phase space volume to be covered. In such case, the limited time available for data acquisition can be a…

We investigate the task of learning blind image denoising networks from an unpaired set of clean and noisy images. Such problem setting generally is practical and valuable considering that it is feasible to collect unpaired noisy and clean…

图像与视频处理 · 电气工程与系统科学 2020-09-01 Xiaohe Wu , Ming Liu , Yue Cao , Dongwei Ren , Wangmeng Zuo

Synthetic aperture radar (SAR) interferometry (InSAR) is performed using repeat-pass geometry. InSAR technique is used to estimate the topographic reconstruction of the earth surface. The main problem of the range-Doppler focusing technique…

信号处理 · 电气工程与系统科学 2018-03-15 Gabriele Costante , Thomas A. Ciarfuglia , Filippo Biondi

Synthetic aperture radar (SAR) data is becoming increasingly available to a wide range of users through commercial service providers with resolutions reaching 0.5m/px. Segmenting SAR data still requires skilled personnel, limiting the…

计算机视觉与模式识别 · 计算机科学 2023-01-18 Xiaying Wang , Lukas Cavigelli , Manuel Eggimann , Michele Magno , Luca Benini

Convolutional neural networks (CNN) have made great progress for synthetic aperture radar (SAR) images change detection. However, sampling locations of traditional convolutional kernels are fixed and cannot be changed according to the…

计算机视觉与模式识别 · 计算机科学 2021-04-07 Junjie Wang , Feng Gao , Junyu Dong

Deep Learning (DL) holds great promise in reshaping the industry owing to its precision, efficiency, and objectivity. However, the brittleness of DL models to noisy and out-of-distribution inputs is ailing their deployment in sensitive…

图像与视频处理 · 电气工程与系统科学 2025-10-03 Giuseppina Carannante , Nidhal C. Bouaynaya , Dimah Dera , Hassan M. Fathallah-Shaykh , Ghulam Rasool

Synthetic aperture radar (SAR) image change detection is a vital yet challenging task in the field of remote sensing image analysis. Most previous works adopt a self-supervised method which uses pseudo-labeled samples to guide subsequent…

计算机视觉与模式识别 · 计算机科学 2022-02-10 Junjie Wang , Feng Gao , Junyu Dong , Shan Zhang , Qian Du

In this paper, we explore the possibility of detecting polar lows in C-band SAR images by means of deep learning. Specifically, we introduce a novel dataset consisting of Sentinel-1 images divided into two classes, representing the presence…

计算机视觉与模式识别 · 计算机科学 2022-09-09 Jakob Grahn , Filippo Maria Bianchi