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In order to retrieve cosmological parameters from photometric surveys, we need to estimate the distribution of the photometric redshift in the sky with excellent accuracy. We use and apply three different machine learning methods to…

宇宙学与河外天体物理 · 物理学 2025-11-13 Elcio Abdalla , Filipe B. Abdalla , Alessandro Marins , Amilcar Queiroz , Rafael M. Ribeiro , Alex S. C. Souza

The difficulty of getting medical treatment is one of major livelihood issues in China. Since patients lack prior knowledge about the spatial distribution and the capacity of hospitals, some hospitals have abnormally high or sporadic…

社会与信息网络 · 计算机科学 2017-08-03 Hanqing Chao , Yuan Cao , Junping Zhang , Fen Xia , Ye Zhou , Hongming Shan

Accurate canopy height information is essential for quantifying forest carbon, monitoring restoration and degradation, and assessing habitat structure, yet high-fidelity measurements from airborne laser scanning (ALS) remain unevenly…

Recently developed automatic dense image matching algorithms are now being implemented for DSM/DTM production, with their pixel-level surface generation capability offering the prospect of partially alleviating the need for manual and…

计算机视觉与模式识别 · 计算机科学 2021-08-20 Rongjun Qin , Armin Gruen , Cive Fraser

Recently, a new global Digital Elevation Model (DEM) with pixel spacing of 0.4 arcseconds and relative height accuracy finer than 2m for flat areas (slopes < 20%) and better than 4m for rugged terrain (slopes > 20%) was created through the…

图像与视频处理 · 电气工程与系统科学 2018-10-29 Hossein Bagheri , Michael Schmitt , Xiao Xiang Zhu

Administrative data allows us to count for the number of residents. The geo-localization of people by mobile phone, by quantifying the number of people at a given moment in time, enriches the amount of useful information for "smart"…

应用统计 · 统计学 2019-06-28 Rodolfo Metulini , Maurizio Carpita

The rise of location positioning technologies has generated enormous volumes of digital footprints. Translating this big data into understandable trip patterns plays a crucial role in estimating infrastructure demands. Previous studies were…

计算机与社会 · 计算机科学 2019-07-09 Bita Sadeghinasr , Armin Akhavan , Qi Wang

This paper addresses the critical environmental challenge of estimating ambient Nitrogen Dioxide (NO$_2$) concentrations, a key issue in public health and environmental policy. Existing methods for satellite-based air pollution estimation…

计算机视觉与模式识别 · 计算机科学 2025-04-25 Ruben Gonzalez Avilés , Linus Scheibenreif , Damian Borth

In this paper we analyse the profile of land use and population density with respect to the distance to the city centre for the European city. In addition to providing the radial population density and soil-sealing profiles for a large set…

物理与社会 · 物理学 2017-04-24 Rémi Lemoy , Geoffrey Caruso

Satellite-based slum segmentation holds significant promise in generating global estimates of urban poverty. However, the morphological heterogeneity of informal settlements presents a major challenge, hindering the ability of models…

计算机视觉与模式识别 · 计算机科学 2025-11-14 Sumin Lee , Sungwon Park , Jeasurk Yang , Jihee Kim , Meeyoung Cha

As a widespread form of informal settlements, urban villages present significant challenges for sustainable urban development and governance. Precise mapping of their infrastructure is essential, however, existing remote sensing datasets…

计算机视觉与模式识别 · 计算机科学 2026-05-29 Hongyu Long , Jiaxuan Liu , Rui Cao

The remote sensing community has identified data fusion as one of the key challenging topics of the 21st century. The subject of image fusion in two-dimensional (2D) space has been covered in several published reviews. However, the special…

计算机视觉与模式识别 · 计算机科学 2022-04-12 Chukwuma Okolie , Julian Smit

This paper addresses the interesting problem of processing and analyzing data in geographic information systems (GIS) to achieve a clear perspective on urban sprawl. The term urban sprawl refers to overgrowth and expansion of low-density…

人工智能 · 计算机科学 2024-09-30 Anita Pampoore-Thampi , Aparna S. Varde , Danlin Yu

Precise knowledge about the size of a crowd, its density and flow can provide valuable information for safety and security applications, event planning, architectural design and to analyze consumer behavior. Creating a powerful machine…

计算机视觉与模式识别 · 计算机科学 2019-06-19 Mahdi Maktabdar Oghaz , Anish R Khadka , Vasileios Argyriou , Paolo Remagnino

Individual tree detection and crown delineation (ITDD) are critical in forest inventory management and remote sensing based forest surveys are largely carried out through satellite images. However, most of these surveys only use 2D spectral…

计算机视觉与模式识别 · 计算机科学 2021-07-02 Changlin Xiao , Rongjun Qin , Xiao Xie , Xu Huang

Accurately estimating forest biomass is crucial for global carbon cycle modelling and climate change mitigation. Tree height, a key factor in biomass calculations, can be measured using Synthetic Aperture Radar (SAR) technology. This study…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Grace Colverd , Jumpei Takami , Laura Schade , Karol Bot , Joseph A. Gallego-Mejia

LiDAR (short for "Light Detection And Ranging" or "Laser Imaging, Detection, And Ranging") technology can be used to provide detailed three-dimensional elevation maps of urban and rural landscapes. To date, airborne LiDAR imaging has been…

机器学习 · 计算机科学 2022-08-03 Matthew Stevenson , Christophe Mues , Cristián Bravo

Identifying the locations and footprints of buildings is vital for many practical and scientific purposes. Such information can be particularly useful in developing regions where alternative data sources may be scarce. In this work, we…

Where data is available, it is desirable in geostatistical modelling to make use of additional covariates, for example terrain data, in order to improve prediction accuracy in the modelling task. While elevation itself may be important,…

计算机视觉与模式识别 · 计算机科学 2020-06-16 Charlie Kirkwood

Automated tracking of urban development in areas where construction information is not available became possible with recent advancements in machine learning and remote sensing. Unfortunately, these solutions perform best on high-resolution…

图像与视频处理 · 电气工程与系统科学 2022-04-06 Yutong He , William Zhang , Chenlin Meng , Marshall Burke , David B. Lobell , Stefano Ermon