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32 Results Found

  • Article
  • Open Access
10 Citations
4,512 Views
17 Pages

Unsupervised Single-Image Super-Resolution with Multi-Gram Loss

  • Yong Shi,
  • Biao Li,
  • Bo Wang,
  • Zhiquan Qi and
  • Jiabin Liu

Recently, supervised deep super-resolution (SR) networks have achieved great success in both accuracy and texture generation. However, most methods train in the dataset with a fixed kernel (such as bicubic) between high-resolution images and their lo...

(This article belongs to the Section Artificial Intelligence)
  • Article
  • Open Access
22 Citations
4,966 Views
19 Pages

Achieving Higher Resolution Lake Area from Remote Sensing Images Through an Unsupervised Deep Learning Super-Resolution Method

  • Mengjiao Qin,
  • Linshu Hu,
  • Zhenhong Du,
  • Yi Gao and ,
  • Lianjie Qin,
  • Feng Zhang and
  • Renyi Liu
  • + 2 authors+ 0 author

15 June 2020

Lakes have been identified as an important indicator of climate change and a finer lake area can better reflect the changes. In this paper, we propose an effective unsupervised deep gradient network (UDGN) to generate a higher resolution lake area fr...

(This article belongs to the Special Issue State-of-the-Art Remote Sensing Technologies for Environmental Monitoring)
  • Article
  • Open Access
17 Citations
5,319 Views
19 Pages

28 March 2021

Hyperspectral image (HSI) super-resolution (SR) is a challenging task due to its ill-posed nature, and has attracted extensive attention by the research community. Previous methods concentrated on leveraging various hand-crafted image priors of a lat...

(This article belongs to the Section Intelligent Sensors)
  • Article
  • Open Access
6 Citations
4,234 Views
17 Pages

Blind Image Super Resolution Using Deep Unsupervised Learning

  • Kazuhiro Yamawaki,
  • Yongqing Sun and
  • Xian-Hua Han

23 October 2021

The goal of single image super resolution (SISR) is to recover a high-resolution (HR) image from a low-resolution (LR) image. Deep learning based methods have recently made a remarkable performance gain in terms of both the effectiveness and efficien...

(This article belongs to the Special Issue Advances in Machine Learning)
  • Article
  • Open Access
25 Citations
6,249 Views
29 Pages

Super-Resolution-Based Snake Model—An Unsupervised Method for Large-Scale Building Extraction Using Airborne LiDAR Data and Optical Image

  • Thanh Huy Nguyen,
  • Sylvie Daniel,
  • Didier Guériot,
  • Christophe Sintès and
  • Jean-Marc Le Caillec

26 May 2020

Automatic extraction of buildings in urban and residential scenes has become a subject of growing interest in the domain of photogrammetry and remote sensing, particularly since the mid-1990s. Active contour model, colloquially known as snake model,...

(This article belongs to the Special Issue 3D City Modelling and Change Detection Using Remote Sensing Data)
  • Article
  • Open Access
13 Citations
4,451 Views
14 Pages

A Novel Domain Transfer-Based Approach for Unsupervised Thermal Image Super-Resolution

  • Rafael E. Rivadeneira,
  • Angel D. Sappa,
  • Boris X. Vintimilla and
  • Riad Hammoud

14 March 2022

This paper presents a transfer domain strategy to tackle the limitations of low-resolution thermal sensors and generate higher-resolution images of reasonable quality. The proposed technique employs a CycleGAN architecture and uses a ResNet as an enc...

(This article belongs to the Section Sensing and Imaging)
  • Article
  • Open Access
14 Citations
6,146 Views
22 Pages

21 March 2022

Remote sensing images are widely used in many applications. However, due to being limited by the sensors, it is difficult to obtain high-resolution (HR) images from remote sensing images. In this paper, we propose a novel unsupervised cross-domain su...

(This article belongs to the Special Issue Advanced Super-resolution Methods in Remote Sensing)
  • Article
  • Open Access
3 Citations
2,987 Views
27 Pages

4 September 2024

Due to the inadequacy in utilizing complementary information from different modalities and the biased estimation of degraded parameters, the unsupervised hyperspectral super-resolution algorithm suffers from low precision and limited applicability. T...

(This article belongs to the Section Remote Sensing Image Processing)
  • Article
  • Open Access
2 Citations
1,126 Views
39 Pages

6 March 2026

Due to hardware limitations of Thermal InfraRed (TIR) cameras, TIR images captured by Unmanned Aerial Vehicles (UAVs) suffer from Low Resolutions (LRs) and blurred textures. Improving the spatial resolution of TIR images is of great significance for...

(This article belongs to the Section Remote Sensing Image Processing)
  • Article
  • Open Access
2 Citations
4,358 Views
13 Pages

5 January 2023

Deep convolutional neural networks (DCNNs) have manifested significant performance gains for single-image super-resolution (SISR) in the past few years. Most of the existing methods are generally implemented in a fully supervised way using large-scal...

(This article belongs to the Special Issue Computer Vision for Security Applications)
  • Article
  • Open Access
5 Citations
3,053 Views
23 Pages

20 December 2024

Advancements in Raman light sheet microscopy have provided a powerful, non-invasive, marker-free method for imaging complex 3D biological structures, such as cell cultures and spheroids. By combining 3D tomograms made by Rayleigh scattering, Raman sc...

(This article belongs to the Special Issue Sensors and Advanced Sensing Techniques for Computer Vision Applications)
  • Article
  • Open Access
16 Citations
3,114 Views
18 Pages

16 August 2024

In recent years, deep learning techniques for pansharpening multiresolution images have gained increasing interest. Due to the lack of ground truth data, most deep learning solutions rely on synthetic reduced-resolution data for supervised training....

(This article belongs to the Special Issue Weakly Supervised Deep Learning in Exploiting Remote Sensing Big Data)
  • Article
  • Open Access
449 Views
38 Pages

4 August 2026

Hyperspectral infrared sounders provide valuable observations for numerical weather prediction (NWP), but their native nadir spatial resolution of approximately 12–16 km is coarser than the approximately 4 km grid spacing commonly used in conve...

  • Article
  • Open Access
20 Citations
3,309 Views
19 Pages

5 February 2023

Single image super-resolution (SISR) is to reconstruct a high-resolution (HR) image from a corresponding low-resolution (LR) input. It is an effective way to solve the problem that infrared remote sensing images are usually suffering low resolution d...

(This article belongs to the Special Issue Advanced Learning Techniques for Remote Sensing Image Quality Improvement)
  • Article
  • Open Access
2 Citations
3,528 Views
26 Pages

14 April 2024

Hyperspectral (HS) data, encompassing hundreds of spectral channels for the same area, offer a wealth of spectral information and are increasingly utilized across various fields. However, their limitations in spatial resolution and imaging width pose...

(This article belongs to the Special Issue Recent Advances in the Processing of Hyperspectral Images)
  • Article
  • Open Access
1 Citations
772 Views
18 Pages

An Adaptive Super-Resolution Network for Drone Ship Images

  • Haoran Li,
  • Wei Xiong,
  • Yaqi Cui and
  • Libo Yao

7 February 2026

Uncovering latent structures from complex, degraded data is a central challenge in modern unsupervised learning, with critical implications for downstream tasks. This principle is exemplified in the domain of aerial imagery, where the quality of imag...

(This article belongs to the Special Issue Information-Theoretic Principles for Advanced Clustering and Structured Representation Learning)
  • Article
  • Open Access
1 Citations
1,751 Views
18 Pages

Historical images as the dominant method for documenting the world and its inhabitants can help us to better understand the real history. Due to the limited camera technology, historical images captured in the early to mid-20th century tend to be ver...

(This article belongs to the Section Computer Vision and Pattern Recognition)
  • Article
  • Open Access
9 Citations
3,585 Views
19 Pages

3 March 2021

Super-resolution (SR) algorithms based on deep learning have dominated in various tasks, including medical imaging, street view surveillance and face recognition. In the remote sensing field, most of the current SR methods utilize the low-resolution...

(This article belongs to the Section Remote Sensors)
  • Article
  • Open Access
6 Citations
4,576 Views
16 Pages

21 May 2020

One of the most challenging aspects of medical modalities such as Computed Tomography (CT) as well hybrid techniques such as CT/PET (Computed Tomography/Positron emission tomography) and PET/MRI is finding a balance between examination time, radiatio...

  • Article
  • Open Access
6 Citations
4,683 Views
15 Pages

29 March 2024

Video super-resolution (VSR) remains challenging for real-world applications due to complex and unknown degradations. Existing methods lack the flexibility to handle video sequences with different degradation levels, thus failing to reflect real-worl...

(This article belongs to the Section Intelligent Sensors)
  • Article
  • Open Access
6 Citations
7,436 Views
17 Pages

Image Super-Resolution Algorithm Based on an Improved Sparse Autoencoder

  • Detian Huang,
  • Weiqin Huang,
  • Zhenguo Yuan,
  • Yanming Lin and ,
  • Jian Zhang and
  • Lixin Zheng
  • + 1 author+ 0 author

5 January 2018

Due to the limitations of the resolution of the imaging system and the influence of scene changes and other factors, sometimes only low-resolution images can be acquired, which cannot satisfy the practical application’s requirements. To improve the q...

(This article belongs to the Section Information Processes)
  • Article
  • Open Access
1 Citations
1,209 Views
25 Pages

Deformable medical image registration aims to spatially align anatomical structures across volumetric scans. Recent transformer-based methods achieve high overlap accuracy but often produce deformation fields with topological violations. We propose C...

(This article belongs to the Special Issue Artificial Intelligence for Signal, Image, and Multimodal Data Processing: Algorithms, Models, and Knowledge Extraction)
  • Article
  • Open Access
430 Views
22 Pages

11 September 2026

While groundwater is the second largest freshwater reservoir on Earth, it remains difficult to monitor, relying mainly on sparse and often unavailable well measurements. The GRACE/GRACE–FO missions enabled the estimation of regional terrestrial...

(This article belongs to the Section Earth Observation Data)
  • Article
  • Open Access
16 Citations
4,030 Views
17 Pages

26 May 2022

The assessment of flood disasters is considered an essential factor in land use management, being necessary to understand and define the magnitude of past events. In this regard, several flood diagnoses have been developed using Sentinel-2 multispect...

(This article belongs to the Special Issue Resilience in Soils and Land Use)
  • Article
  • Open Access
4 Citations
3,931 Views
18 Pages

27 February 2024

The supervised super-resolution (SR) methods based on simple degradation assumptions (e.g., bicubic downsampling) have unsatisfactory generalization ability on real-world thermal images. To enhance the SR effect of real-world sceneries, we introduce...

(This article belongs to the Section Signal and Data Analysis)
  • Article
  • Open Access
24 Citations
8,302 Views
23 Pages

Blind Super-Resolution for SAR Images with Speckle Noise Based on Deep Learning Probabilistic Degradation Model and SAR Priors

  • Chongqi Zhang,
  • Ziwen Zhang,
  • Yao Deng,
  • Yueyi Zhang and ,
  • Mingzhe Chong,
  • Yunhua Tan and
  • Pukun Liu
  • + 2 authors+ 0 author

5 January 2023

As an active microwave coherent imaging technology, synthetic aperture radar (SAR) images suffer from severe speckle noise and low-resolution problems due to the limitations of the imaging system, which cause difficulties in image interpretation and...

(This article belongs to the Special Issue Advanced Super-resolution Methods in Remote Sensing)
  • Letter
  • Open Access
55 Citations
5,265 Views
13 Pages

16 May 2019

Fusion of the high-spatial-resolution hyperspectral (HHS) image using low-spatial- resolution hyperspectral (LHS) and high-spatial-resolution multispectral (HMS) image is usually formulated as a spatial super-resolution problem of LHS image with the...

(This article belongs to the Special Issue Quality Improvement of Remote Sensing Images)
  • Article
  • Open Access
6 Citations
3,814 Views
21 Pages

19 August 2024

Large field-of-view images are increasingly used in various environments today, and image stitching technology can make up for the limited field of view caused by hardware design. However, previous methods are constrained in various environments. In...

(This article belongs to the Collection Advances in Deep-Learning-Based Sensing, Imaging, and Video Processing)
  • Article
  • Open Access
7 Citations
4,505 Views
21 Pages

24 May 2021

Image denoising, a classic ill-posed problem, aims to recover a latent image from a noisy measurement. Over the past few decades, a considerable number of denoising methods have been studied extensively. Among these methods, supervised deep convoluti...

(This article belongs to the Section Computing and Artificial Intelligence)
  • Article
  • Open Access
6 Citations
3,157 Views
23 Pages

19 June 2022

Image denoising is a classic but still important issue in image processing as the denoising effect has a significant impact on subsequent image processing results, such as target recognition and edge detection. In the past few decades, various denois...

(This article belongs to the Section Computing and Artificial Intelligence)
  • Article
  • Open Access
7 Citations
3,947 Views
26 Pages

Super Resolution of Magnetic Resonance Images

  • Prabhjot Kaur,
  • Anil Kumar Sao and
  • Chirag Kamal Ahuja

In this work, novel denoising and super resolution (SR) approaches for magnetic resonance (MR) images are addressed, and are integrated in a unified framework, which do not require example low resolution (LR)/high resolution (HR)/cross-modality/noise...

(This article belongs to the Special Issue Intelligent Strategies for Medical Image Analysis)
  • Article
  • Open Access
16 Citations
5,246 Views
18 Pages

Fast Urban Land Cover Mapping Exploiting Sentinel-1 and Sentinel-2 Data

  • Naomi Petrushevsky,
  • Marco Manzoni and
  • Andrea Monti-Guarnieri

22 December 2021

The rapid change and expansion of human settlements raise the need for precise remote-sensing monitoring tools. While some Land Cover (LC) maps are publicly available, the knowledge of the up-to-date urban extent for a specific instance in time is of...

(This article belongs to the Section Urban Remote Sensing)