Remote Sensing

Article Geochemistry & Geophysics

SpectralFormer: Rethinking Hyperspectral Image Classification With Transformers

Danfeng Hong, Zhu Han, Jing Yao, Lianru Gao, Bing Zhang, Antonio Plaza, Jocelyn Chanussot

Summary: The article introduces a novel HS image classification network called SpectralFormer, which utilizes the transformers framework to learn spectral sequence information, achieving better classification performance than traditional methods and exhibiting high flexibility.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Remote Sensing Image Change Detection With Transformers

Hao Chen, Zipeng Qi, Zhenwei Shi

Summary: This study introduces a bitemporal image transformer (BIT) for efficient and effective change detection by modeling contexts in the spatial-temporal domain. The BIT model demonstrates superior performance and efficiency on three CD datasets, significantly outperforming the purely convolutional baseline model with lower computational costs.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Align Deep Features for Oriented Object Detection

Jiaming Han, Jian Ding, Jie Li, Gui-Song Xia

Summary: Significant progress has been made in the past decade on detecting objects in aerial images. We propose a single-shot alignment network (S(2)A-Net) that consists of two modules to address the misalignment issue between anchors and convolutional features, improving the consistency between classification score and localization accuracy.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

SNUNet-CD: A Densely Connected Siamese Network for Change Detection of VHR Images

Sheng Fang, Kaiyu Li, Jinyuan Shao, Zhe Li

Summary: This letter proposes a densely connected siamese network (SNUNet-CD) for change detection, which alleviates the loss of localization information in deep layers and introduces ECAM for deep supervision. Experimental results show that the method achieves a better tradeoff between accuracy and calculation amount compared to other state-of-the-art change detection methods.

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS (2022)

Article Geochemistry & Geophysics

SpectralSpatial Feature Tokenization Transformer for Hyperspectral Image Classification

Le Sun, Guangrui Zhao, Yuhui Zheng, Zebin Wu

Summary: In this article, the spectral-spatial feature tokenization transformer (SSFTT) method is proposed to capture spectral-spatial and high-level semantic features. Experimental analysis confirms that this method outperforms other deep learning methods in terms of computation time and classification performance.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Random and Coherent Noise Suppression in DAS-VSP Data by Using a Supervised Deep Learning Method

Xintong Dong, Yue Li, Tie Zhong, Ning Wu, Hongzhou Wang

Summary: Distributed fiber-optical acoustic sensing (DAS) is a promising technology in seismic exploration, but the quality of DAS-VSP data is often affected by random and coherent noises. To improve the signal-to-noise ratio, a CNN model based on L-FM-CNN is proposed, utilizing leaky ReLU as the activation function. By constructing a high-authenticity theoretical seismic data set and using a new loss function ERM, the proposed method proves effective in denoising DAS-VSP data with different SNRs.

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS (2022)

Article Geochemistry & Geophysics

Remote Sensing Image Classification Based on a Cross-Attention Mechanism and Graph Convolution

Weiwei Cai, Zhanguo Wei

Summary: In this letter, a novel cross-attention mechanism and graph convolution integration algorithm are proposed for hyperspectral data classification. Experimental results show that the proposed algorithm achieves better performances than other algorithms using different methods of training set division.

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS (2022)

Article Geochemistry & Geophysics

Convolutional Neural Networks for Multimodal Remote Sensing Data Classification

Xin Wu, Danfeng Hong, Jocelyn Chanussot

Summary: This paper proposes a new framework for multimodal remote sensing data classification, using deep learning and a cross-channel reconstruction module to learn compact fusion representations of different data sources. Extensive experiments on two multimodal RS datasets demonstrate the effectiveness and superiority of the proposed method.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

A Deeply Supervised Attention Metric-Based Network and an Open Aerial Image Dataset for Remote Sensing Change Detection

Qian Shi, Mengxi Liu, Shengchen Li, Xiaoping Liu, Fei Wang, Liangpei Zhang

Summary: The article proposes a deeply supervised attention metric-based network (DSAMNet) to address the challenges in change detection. The network uses a metric module for deep metric learning, integrated with convolutional block attention modules (CBAM), and a DS module to enhance feature extraction and generate more useful features. A new CD dataset, Sun Yat-Sen University (SYSU)-CD, containing 20,000 aerial image pairs, is also created for bitemporal image CD. Experimental results show that the network achieves the highest accuracy on both datasets.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Dimensionality Reduction and Classification of Hyperspectral Image via Multistructure Unified Discriminative Embedding

Fulin Luo, Zehua Zou, Jiamin Liu, Zhiping Lin

Summary: The research proposes a multistructure unified discriminative embedding (MUDE) method to extract the low-dimensional features of hyperspectral image (HSI), by considering the neighborhood, tangential, and statistical properties of each sample in HSI for achieving the complementarity of different characteristics. Experimental results demonstrate that the proposed method can improve the classification performance of HSI.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Environmental Sciences

Full-coverage mapping and spatiotemporal variations of ground-level ozone (O3) pollution from 2013 to 2020 across China

Jing Wei, Zhanqing Li, Ke Li, Russell R. Dickerson, Rachel T. Pinker, Jun Wang, Xiong Liu, Lin Sun, Wenhao Xue, Maureen Cribb

Summary: This study presents a new method to estimate ground-level ozone concentrations in China using solar radiation intensity and surface temperature. The generated dataset provides reliable and valuable information, including short-term severe ozone pollution events and the rapid increase and recovery of ozone concentrations associated with changes in anthropogenic emissions. The study also reveals an increase in summertime ozone concentrations and the probability of daily ozone pollution since 2015, with a decline observed in 2020 due to air pollution control measures and the COVID-19 pandemic.

REMOTE SENSING OF ENVIRONMENT (2022)

Review Geography, Physical

FAIR1M: A benchmark dataset for fine-grained object recognition in high-resolution remote sensing imagery

Xian Sun, Peijin Wang, Zhiyuan Yan, Feng Xu, Ruiping Wang, Wenhui Diao, Jin Chen, Jihao Li, Yingchao Feng, Tao Xu, Martin Weinmann, Stefan Hinz, Cheng Wang, Kun Fu

Summary: With the rapid development of deep learning, many deep learning-based approaches have achieved great success in object detection tasks. However, existing datasets have limitations in terms of scale, category, and image. To address the needs of high-resolution remote sensing images, we propose a novel benchmark dataset called FAIR1M, which includes over 1 million instances and more than 40,000 images for fine-grained object recognition. The FAIR1M dataset has several unique characteristics, such as being larger than other datasets, providing richer category information, containing geographic information, and having better image quality. We evaluate state-of-the-art methods on the FAIR1M dataset and propose improvements to the evaluation metrics and the incorporation of hierarchy detection. We believe that the FAIR1M dataset will contribute to the field of earth observation through fine-grained object detection in large-scale real-world scenes.

ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Multiattention Network for Semantic Segmentation of Fine-Resolution Remote Sensing Images

Rui Li, Shunyi Zheng, Ce Zhang, Chenxi Duan, Jianlin Su, Libo Wang, Peter M. Atkinson

Summary: Semantic segmentation of remote sensing images is vital for various applications such as land resource management and urban planning. Despite the improvement in accuracy with deep convolutional neural networks, standard models have limitations like underuse of information and insufficient exploration of long-range dependencies. This article introduces a multiattention network (MANet) with efficient attention modules to address these issues and demonstrates superior performance on large-scale remote sensing datasets.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Semi-Supervised Locality Preserving Dense Graph Neural Network With ARMA Filters and Context-Aware Learning for Hyperspectral Image Classification

Yao Ding, Xiaofeng Zhao, Zhili Zhang, Wei Cai, Nengjun Yang, Ying Zhan

Summary: A novel dense graph neural network structure incorporating ARMA filters, dense structure, and context-aware learning mechanism has been proposed and applied successfully to hyperspectral image classification. Experimental results demonstrated its superiority over current state-of-the-art methods.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Local Similarity-Based Spatial-Spectral Fusion Hyperspectral Image Classification With Deep CNN and Gabor Filtering

Uzair Aslam Bhatti, Zhaoyuan Yu, Jocelyn Chanussot, Zeeshan Zeeshan, Linwang Yuan, Wen Luo, Saqib Ali Nawaz, Mughair Aslam Bhatti, Qurat ul Ain, Anum Mehmood

Summary: This article introduces a novel HSI classification algorithm, LSPGF, which utilizes LSP and Gabor filtering to extract deeper features from original hyperspectral data, achieving higher classification accuracy compared to other algorithms.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Artificial Intelligence for Remote Sensing Data Analysis A Review of Challenges and Opportunities

Lefei Zhang, Liangpei Zhang

IEEE GEOSCIENCE AND REMOTE SENSING MAGAZINE (2022)

Review Remote Sensing

Towards the Unmanned Aerial Vehicles (UAVs): A Comprehensive Review

Syed Agha Hassnain Mohsan, Muhammad Asghar Khan, Fazal Noor, Insaf Ullah, Mohammed H. Alsharif

Summary: This article discusses the importance and potential of drones in various application fields, as well as the challenges and security issues they face. It also presents future research directions and areas that need to be addressed.

DRONES (2022)

Article Geochemistry & Geophysics

Swin Transformer Embedding UNet for Remote Sensing Image Semantic Segmentation

Xin He, Yong Zhou, Jiaqi Zhao, Di Zhang, Rui Yao, Yong Xue

Summary: In this paper, a novel semantic segmentation framework called ST-UNet is proposed for remote sensing images. By incorporating Swin Transformer and CNN, the framework achieves improved segmentation accuracy. The introduced spatial interaction module, feature compression module, and relational aggregation module effectively utilize global context information and local features, leading to significant performance improvements.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Geochemistry & Geophysics

Multiscale CNN Based on Component Analysis for SAR ATR

Yi Li, Lan Du, Di Wei

Summary: This article presents a multiscale convolutional neural network (CNN) based on component analysis (CA-MCNN) for synthetic aperture radar (SAR) automatic target recognition (ATR). By combining component information with global information, CA-MCNN achieves a more efficient and robust representation of target features. Extensive experiments on the moving and stationary target acquisition and recognition (MSTAR) dataset demonstrate the superior performance of CA-MCNN.

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (2022)

Article Engineering, Electrical & Electronic

YOLOv5-Tassel: Detecting Tassels in RGB UAV Imagery With Improved YOLOv5 Based on Transfer Learning

Wei Liu, Karoll Quijano, Melba M. Crawford

Summary: This paper proposes a tassel detection algorithm based on UAV imagery, which achieves better performance in small-size tassel detection. The algorithm adopts novel techniques such as the bidirectional feature pyramid network and the robust attention module.

IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING (2022)