This work utilizes a MobileNetV2 Convolutional Neural Network (CNN) for fast, mobile detection of satellites, and rejection of stars, in cluttered unresolved space imagery. First, a custom database is created using imagery from a synthetic satellite image program and labeled with bounding boxes over satellites for "satellite-positive" images. The CNN is then trained on this database and the inference is validated by checking the accuracy of the model on an external dataset constructed of real telescope imagery. In doing so, the trained CNN provides a method of rapid satellite identification for subsequent utilization in ground-based orbit estimation.
Gaining timely and reliable situation awareness after hazard events such as a hurricane is crucial to emergency managers and first responders. One effective way to achieve that goal is through damage assessment. Recently, disaster researchers have been utilizing imagery captured through satellites or drones to quantify the number of flooded/damaged buildings. In this paper, we propose a mixed data approach, which leverages publicly available satellite imagery and geolocation features of the affected area to identify damaged buildings after a hurricane. The method demonstrated significant impro…
Renmin University of China（中国人民大学）；Connected Robotics Inc.（互联机器人公司）；RIKEN Center for Advanced Intelligence Project (AIP)（理化学研究所先进智能项目中心）
In the field of post-disaster assessment, for timely and accurate rescue and localization after a disaster, people need to know the location of damaged buildings. In deep learning, some scholars have proposed methods to make automatic and highly accurate building damage assessments by remote sensing images, which are proved to be more efficient than assessment by domain experts. However, due to the lack of a large amount of labeled data, these kinds of tasks can suffer from being able to do an accurate assessment, as the efficiency of deep learning models relies highly on labeled data. Althoug…
Qatar Computing Research Institute（卡塔尔计算研究所）；Hamad Bin Khalifa University（哈马德·本·哈利法大学）
The extensive use of social media platforms, especially during disasters, creates unique opportunities for humanitarian organizations to gain situational awareness and launch relief operations accordingly. In addition to the textual content, people post overwhelming amounts of imagery data on social networks within minutes of a disaster hit. Studies point to the importance of this online imagery content for emergency response. Despite recent advances in the computer vision field, automatic processing of the crisis-related social media imagery data remains a challenging task. It is because a ma…
Cross-View Geolocalization and Disaster Mapping with Street-View and VHR Satellite Imagery: A Case Study of Hurricane IAN
Technical University of Munich（慕尼黑工业大学）；University of the Bundeswehr Munich（慕尼黑联邦国防军大学）；China University of Mining and Technology（中国矿业大学）；University of Texas at Austin（德克萨斯大学奥斯汀分校）；Tongji University（同济大学）
Enhancing Maritime Situational Awareness through End-to-End Onboard Raw Data Analysis
European Space Agency（欧洲空间局）；University of Naples Federico II（那不勒斯费德里科二世大学）；Ben-Gurion University of the Negev（本-古里安大学内盖夫分校）；University of Campania “L. Vanvitelli”（坎帕尼亚大学“L.万维泰利”分校）；Advanced Concepts and Studies Office, European Space Agency（欧洲空间局先进概念与研究办公室）
DSFC-Net: A Dual-Encoder Spatial and Frequency Co-Awareness Network for Rural Road Extraction
School of Artificial Intelligence, University of Chinese Academy of Sciences（中国科学院大学人工智能学院）；State Key Laboratory of Multimodal Artificial Intelligence Systems, Institute of Automation, Chinese Academy of Sciences（中国科学院自动化研究所多模态人工智能系统国家重点实验室）；Department of Earth System Science, Tsinghua University（清华大学地球系统科学系）；Shenzhen International Graduate School, Tsinghua University（清华大学深圳国际研究生院）；College of Information and Electrical Engineering, China Agricultural University（中国农业大学信息与电气工程学院）
DisasterTD: Disaster Toponym Disambiguation Using Multimodal LLMs and Cross-View Geolocalization
College of Geodesy and Geomatics, Shandong University of Science and Technology（山东科技大学测绘与地理信息学院）；School of Environmental Science and Spatial Informatics, China University of Mining and Technology（中国矿业大学环境与测绘学院）；State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University（武汉大学测绘遥感信息工程国家重点实验室）；Tsinghua Shenzhen International Graduate School, Tsinghua University（清华大学深圳国际研究生院）；School of Automation, Southeast University（东南大学自动化学院）；Department of Geography, National University of Singapore（新加坡国立大学地理系）
German Aerospace Center (DLR)（德国航空航天中心）；Technical University of Munich (TUM)（慕尼黑工业大学）
Detecting changes on the ground in multitemporal Earth observation data is one of the key problems in remote sensing. In this paper, we introduce Sibling Regression for Optical Change detection (SiROC), an unsupervised method for change detection in optical satellite images with medium and high resolution. SiROC is a spatial context-based method that models a pixel as a linear combination of its distant neighbors. It uses this model to analyze differences in the pixel and its spatial context-based predictions in subsequent time periods for change detection. We combine this spatial context-base…
Massachusetts Institute of Technology（麻省理工学院）；MIT Lincoln Laboratory（麻省理工学院林肯实验室）
Aerial images provide important situational awareness for responding to natural disasters such as hurricanes. They are well-suited for providing information for damage estimation and localization (DEL); i.e., characterizing the type and spatial extent of damage following a disaster. Despite recent advances in sensing and unmanned aerial systems technology, much of post-disaster aerial imagery is still taken by handheld DSLR cameras from small, manned, fixed-wing aircraft. However, these handheld cameras lack IMU information, and images are taken opportunistically post-event by operators. As su…
Chinese Univ. of Hong Kong（香港中文大学）；Wake Forest Univ.（维克森林大学）；Univ. Minnesota（明尼苏达大学）；Univ. New Mexico（新墨西哥大学）；ENS Cachan, Univ. Paris-Saclay（巴黎萨克雷大学卡尚高等师范学校）
An optical imager that exploits off-center image rotation to encode both the lateral and depth coordinates of point sources in a single snapshot can perform 3D localization and tracking of space debris. When actively illuminated, unresolved space debris, which can be regarded as a swarm of point sources, can scatter a fraction of laser irradiance back into the imaging sensor. Determining the source locations and fluxes is a large-scale sparse 3D inverse problem, for which we have developed efficient and effective algorithms based on sparse recovery using non-convex optimization. Numerical simu…
LOGCAN++: Adaptive Local-global class-aware network for semantic segmentation of remote sensing imagery
School of Software Technology, Zhejiang University（浙江大学软件学院）；School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University（上海交通大学电子信息与电气工程学院）；School of Computer Science and Technology, Zhejiang University（浙江大学计算机科学与技术学院）；School of Earth Sciences, Zhejiang University（浙江大学地球科学学院）；Innovation Center of Yangtze River Delta, Zhejiang University（浙江大学长三角创新中心）；University of Exeter（埃克塞特大学）
DEM Refinement and Validation on the Lunar Surface Using Shape-from-Shading with Chandrayaan-2 OHRC Imagery
School of Computer Science and Engineering, Manipal University（曼海姆大学计算机科学与工程学院）；Space Applications Centre (SAC), Indian Space Research Organisation (ISRO)（印度空间研究组织空间应用中心）
Facebook；DigitalGlobe；CosmiQ Works；Wageningen University（瓦赫宁根大学）；The MIT Media Lab（麻省理工学院媒体实验室）
We present the DeepGlobe 2018 Satellite Image Understanding Challenge, which includes three public competitions for segmentation, detection, and classification tasks on satellite images. Similar to other challenges in computer vision domain such as DAVIS and COCO, DeepGlobe proposes three datasets and corresponding evaluation methodologies, coherently bundled in three competitions with a dedicated workshop co-located with CVPR 2018. We observed that satellite imagery is a rich and structured source of information, yet it is less investigated than everyday images by computer vision researchers.…
Vision Systems Inc.（视觉系统公司）；ExoAnalytic Solutions（ExoAnalytic解决方案公司）；Texas A&M（德州农工大学）
Automated 3D pose estimation of satellites and other known space objects is a critical component of space situational awareness. Ground-based imagery offers a convenient data source for satellite characterization; however, analysis algorithms must contend with atmospheric distortion, variable lighting, and unknown reflectance properties. Traditional feature-based pose estimation approaches are unable to discover an accurate correlation between a known 3D model and imagery given this challenging image environment. This paper presents an innovative method for automated 3D pose estimation of know…
Can Optical Denoising Clean Sonar Images? A Benchmark and Fusion Approach
Hangzhou Institute of Technology, Xidian University（杭州理工大学）；Department of Engineering, Shenzhen MSU-BIT University（深圳MSU-BIT大学工程系）；School of Information Engineering, Jiangxi University of Science（江西理工大学信息工程学院）；Institute of Deep-sea Science（深海科学研究院）；School of Computer Science, Northwestern Polytechnical University（西北工业大学计算机学院）；College of Cyber Security, Jinan University（广州大学网络安全学院）
University of California, Santa Cruz（加州大学圣克鲁兹分校）；NOAA National Ocean Service（美国国家海洋和大气管理局国家海洋局）
This paper presents a machine learning approach for the automatic identification of rip currents with breaking waves. Rip currents are dangerous fast moving currents of water that result in many deaths by sweeping people out to sea. Most people do not know how to recognize rip currents in order to avoid them. Furthermore, efforts to forecast rip currents are hindered by lack of observations to help train and validate hazard models. The presence of web cams and smart phones have made video and still imagery of the coast ubiquitous and provide a potential source of rip current observations. Thes…
The University of New Mexico（新墨西哥大学）；Los Alamos National Laboratory（洛斯阿拉莫斯国家实验室）
Intelligent detection and processing capabilities can be instrumental to improving the safety, efficiency, and successful completion of rescue missions conducted by firefighters in emergency first response settings. The objective of this research is to create an automated system that is capable of real-time, intelligent object detection and recognition and facilitates the improved situational awareness of firefighters during an emergency response. We have explored state of the art machine/deep learning techniques to achieve this objective. The goal for this work is to enhance the situational a…
Lancaster University（兰卡斯特大学）；University of Bath（巴斯大学）；University of Oxford（牛津大学）
High-resolution satellite imagery available immediately after disaster events is crucial for response planning as it facilitates broad situational awareness of critical infrastructure status such as building damage, flooding, and obstructions to access routes. Damage mapping at this scale would require hundreds of expert person-hours. However, a combination of crowdsourcing and recent advances in deep learning reduces the effort needed to just a few hours in real time. Asking volunteers to place point marks, as opposed to shapes of actual damaged areas, significantly decreases the required ana…
Neural Spatial-Temporal Tensor Representation for Infrared Small Target Detection
School of Information and Communication Engineering, University of Electronic Science and Technology of China（电子科技大学信息与通信工程学院）；University of Electronic Science and Technology of China（电子科技大学）；College of Glasgow, University of Electronic Science and Technology of China（电子科技大学格拉斯哥学院）
Pan-Arctic Permafrost Landform and Human-built Infrastructure Feature Detection with Vision Transformers and Location Embeddings
University of Connecticut（康涅狄格大学）；Google（谷歌）；Woodwell Climate Research Center（伍德韦尔气候研究中心）；National Center for Supercomputing Applications, University of Illinois（伊利诺伊大学国家超级计算应用中心）
