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Removing speckle noise from SAR images is still an open issue. It is well know that the interpretation of SAR images is very challenging and despeckling algorithms are necessary to improve the ability of extracting information. An urban…

图像与视频处理 · 电气工程与系统科学 2020-01-17 Giampaolo Ferraioli , Vito Pascazio , Sergio Vitale

Speckle noise is generated along with the SAR imaging mechanism and degrades the quality of SAR images, leading to difficult interpretation. Hence, despeckling is an indispensable step in SAR pre-processing. Fortunately, supervised learning…

图像与视频处理 · 电气工程与系统科学 2025-03-26 Liang Chen , Yifei Yin , Hao Shi , Jingfei He , Wei Li

Deep learning-based hyperspectral image super-resolution (SR) methods have achieved great success recently. However, most existing models can not effectively explore spatial information and spectral information between bands simultaneously,…

计算机视觉与模式识别 · 计算机科学 2020-01-15 Qi Wang , Qiang Li , Xuelong 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

Speckle noise, inherent in synthetic aperture radar (SAR) images, degrades the performance of the various SAR image analysis tasks. Thus, speckle noise reduction is a critical preprocessing step for smoothing homogeneous regions while…

计算机视觉与模式识别 · 计算机科学 2018-01-16 Fatih Nar

Super-resolution (SR) aims to increase the resolution of imagery. Applications include security, medical imaging, and object recognition. We propose a deep learning-based SR system that takes a hexagonally sampled low-resolution image as an…

图像与视频处理 · 电气工程与系统科学 2021-11-05 Dylan Flaute , Russell C. Hardie , Hamed Elwarfalli

We propose a novel approach for generating high quality visible-like images from Synthetic Aperture Radar (SAR) images using Deep Convolutional Generative Adversarial Network (GAN) architectures. The proposed approach is based on a cascaded…

计算机视觉与模式识别 · 计算机科学 2018-02-28 Puyang Wang , Vishal M. Patel

As an integral component of blind image deblurring, non-blind deconvolution removes image blur with a given blur kernel, which is essential but difficult due to the ill-posed nature of the inverse problem. The predominant approach is based…

计算机视觉与模式识别 · 计算机科学 2020-02-18 Dong Gong , Zhen Zhang , Qinfeng Shi , Anton van den Hengel , Chunhua Shen , Yanning Zhang

Learning-based single image super-resolution (SISR) methods are continuously showing superior effectiveness and efficiency over traditional model-based methods, largely due to the end-to-end training. However, different from model-based…

图像与视频处理 · 电气工程与系统科学 2020-03-24 Kai Zhang , Luc Van Gool , Radu Timofte

Speckle fluctuations seriously limit the interpretability of synthetic aperture radar (SAR) images. Speckle reduction has thus been the subject of numerous works spanning at least four decades. Techniques based on deep neural networks have…

计算机视觉与模式识别 · 计算机科学 2021-11-16 Emanuele Dalsasso , Loïc Denis , Florence Tupin

Coherent imaging systems like synthetic aperture radar are susceptible to multiplicative noise that makes applications like automatic target recognition challenging. In this paper, NeighCNN, a deep learning-based speckle reduction algorithm…

图像与视频处理 · 电气工程与系统科学 2021-08-27 Praveen Ravirathinam , Darshan Agrawal , J. Jennifer Ranjani

Speckle is a multiplicative noise which affects all coherent imaging modalities including Synthetic Aperture Radar (SAR) images. The presence of speckle degrades the image quality and adversely affects the performance of SAR image…

图像与视频处理 · 电气工程与系统科学 2023-06-21 Malsha V. Perera , Nithin Gopalakrishnan Nair , Wele Gedara Chaminda Bandara , Vishal M. Patel

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

Despeckling is a crucial noise reduction task in improving the quality of synthetic aperture radar (SAR) images. Directly obtaining noise-free SAR images is a challenging task that has hindered the development of accurate despeckling…

计算机视觉与模式识别 · 计算机科学 2024-01-17 Shunya Kato , Masaki Saito , Katsuhiko Ishiguro , Sol Cummings

Deep learning methods based synthetic aperture radar (SAR) image target recognition tasks have been widely studied currently. The existing deep methods are insufficient to perceive and mine the scattering information of SAR images,…

计算机视觉与模式识别 · 计算机科学 2025-04-08 Chenxi Zhao , Daochang Wang , Siqian Zhang , Gangyao Kuang

The wavelet shrinkage denoising approach is able to maintain local regularity of a signal while suppressing noise. However, the conventional wavelet shrinkage based methods are not time-scale adaptive to track the local time-scale…

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

This paper proposes crack segmentation augmented by super resolution (SR) with deep neural networks. In the proposed method, a SR network is jointly trained with a binary segmentation network in an end-to-end manner. This joint learning…

计算机视觉与模式识别 · 计算机科学 2024-03-11 Yuki Kondo , Norimichi Ukita

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

Super-Resolution convolutional neural networks have recently demonstrated high-quality restoration for single images. However, existing algorithms often require very deep architectures and long training times. Furthermore, current…

图像与视频处理 · 电气工程与系统科学 2019-07-02 Saeed Anwar , Nick Barnes

Synthetic Aperture Radar (SAR) imagery enables all-weather, day-and-night Earth observation; however, it remains difficult to interpret due to speckle noise and other intrinsic imaging artifacts. Sentinel-1 (S1) constitutes one of the most…

计算机视觉与模式识别 · 计算机科学 2026-05-29 Juan Francisco Amieva , Christian Ayala , Roberto Del Prete , Mikel Galar