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Cell phone coverage and high-speed service gaps persist in rural areas in sub-Saharan Africa, impacting public access to mobile-based financial, educational, and humanitarian services. Improving maps of telecommunications infrastructure can…

Computer Vision and Pattern Recognition · Computer Science 2023-11-15 Natasha Krell , Will Gleave , Daniel Nakada , Justin Downes , Amanda Willet , Matthew Baran

High resolution remote sensing imagery is used in broad range of tasks, including detection and classification of objects. High-resolution imagery is however expensive, while lower resolution imagery is often freely available and can be…

Image and Video Processing · Electrical Eng. & Systems 2021-11-08 Muhammed Razzak , Gonzalo Mateo-Garcia , Luis Gómez-Chova , Yarin Gal , Freddie Kalaitzis

Current crowd counting algorithms are only concerned about the number of people in an image, which lacks low-level fine-grained information of the crowd. For many practical applications, the total number of people in an image is not as…

Computer Vision and Pattern Recognition · Computer Science 2021-02-24 Jia Wan , Nikil Senthil Kumar , Antoni B. Chan

Short-term future population prediction is a crucial problem in urban computing. Accurate future population prediction can provide rich insights for urban planners or developers. However, predicting the future population is a challenging…

Machine Learning · Computer Science 2022-03-02 Yuki Kubota , Yuki Ohira , Tetsuo Shimizu

Estimating count and density maps from crowd images has a wide range of applications such as video surveillance, traffic monitoring, public safety and urban planning. In addition, techniques developed for crowd counting can be applied to…

Computer Vision and Pattern Recognition · Computer Science 2017-07-20 Vishwanath A. Sindagi , Vishal M. Patel

Large-scale networks of human interaction, in particular country-wide telephone call networks, can be used to redraw geographical maps by applying algorithms of topological community detection. The geographic projections of the emerging…

Social and Information Networks · Computer Science 2013-12-23 Stanislav Sobolevsky , Michael Szell , Riccardo Campari , Thomas Couronné , Zbigniew Smoreda , Carlo Ratti

Savannahs are vital ecosystems whose sustainability is endangered by the spread of woody plants. This research targets the accurate mapping of fractional woody cover (FWC) at the species level in a South African savannah, using EnMAP…

This paper presents a multi-tiered human-in-the-loop framework for interactive school mapping designed to improve the accuracy and completeness of educational facility records, particularly in developing regions where such data may be…

Computer Vision and Pattern Recognition · Computer Science 2025-11-03 Casper Fibaek , Abi Riley , Kelsey Doerksen , Do-Hyung Kim , Rochelle Schneider

Crop type maps are critical for tracking agricultural land use and estimating crop production. Remote sensing has proven an efficient and reliable tool for creating these maps in regions with abundant ground labels for model training, yet…

Applications · Statistics 2022-12-20 Stefania Di Tommaso , Sherrie Wang , Vivek Vajipey , Noel Gorelick , Rob Strey , David B. Lobell

Accurate Above-Ground Biomass (AGB) mapping at both large scale and high spatio-temporal resolution is essential for applications ranging from climate modeling to biodiversity assessment, and sustainable supply chain monitoring. At present,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-04 Kaan Karaman , Yuchang Jiang , Damien Robert , Vivien Sainte Fare Garnot , Maria João Santos , Jan Dirk Wegner

Mapping of spatial hotspots, i.e., regions with significantly higher rates of generating cases of certain events (e.g., disease or crime cases), is an important task in diverse societal domains, including public health, public safety,…

Machine Learning · Statistics 2021-10-12 Yiqun Xie , Shashi Shekhar , Yan Li

The land-use map is an important data that can reflect the use and transformation of human land, and can provide valuable reference for land-use planning. For the traditional image classification method, producing a high spatial resolution…

Computer Vision and Pattern Recognition · Computer Science 2019-08-12 Xuan Yang , Zhengchao Chen , Baipeng Li , Dailiang Peng , Pan Chen , Bing Zhang

Crowd density estimation is a well-known computer vision task aimed at estimating the density distribution of people in an image. The main challenge in this domain is the reliance on fine-grained location-level annotations, (i.e. points…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Mattia Litrico , Feng Chen , Michael Pound , Sotirios A Tsaftaris , Sebastiano Battiato , Mario Valerio Giuffrida

High-resolution (HR) land-cover mapping is often constrained by the high cost of dense HR annotations. We revisit this problem from the perspective of map super-resolution, which enhances coarse low-resolution (LR) land-cover products into…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Ruiqi Wang , Qi Yu , Jie Ma , Hanlin Wu

Semantic 2D maps are commonly used by humans and machines for navigation purposes, whether it's walking or driving. However, these maps have limitations: they lack detail, often contain inaccuracies, and are difficult to create and…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Paul-Edouard Sarlin , Eduard Trulls , Marc Pollefeys , Jan Hosang , Simon Lynen

The aim of crowd counting is to estimate the number of people in images by leveraging the annotation of center positions for pedestrians' heads. Promising progresses have been made with the prevalence of deep Convolutional Neural Networks.…

Computer Vision and Pattern Recognition · Computer Science 2019-09-17 Zhi-Qi Cheng , Jun-Xiu Li , Qi Dai , Xiao Wu , Alexander Hauptmann

Missing data is a recurrent problem in remote sensing, mainly due to cloud coverage for multispectral images and acquisition problems. This can be a critical issue for crop monitoring, especially for applications relying on machine learning…

The accurate mapping of crop production is crucial for ensuring food security, effective resource management, and sustainable agricultural practices. One way to achieve this is by analyzing high-resolution satellite imagery. Deep Learning…

Computer Vision and Pattern Recognition · Computer Science 2023-07-13 Priyanka Goyal , Sohan Patnaik , Adway Mitra , Manjira Sinha

Exoplanet surveys have revealed a wide diversity of planetary systems, requiring integrated models of planet formation to explain their origin. Planet population synthesis (PPS) modelling is a key tool for linking theory with the…

Earth and Planetary Astrophysics · Physics 2026-04-21 Tadahiro Kimura , Masahiro Ikoma

The success of modern farming and plant breeding relies on accurate and efficient collection of data. For a commercial organization that manages large amounts of crops, collecting accurate and consistent data is a bottleneck. Due to limited…

Computer Vision and Pattern Recognition · Computer Science 2021-02-26 Saeed Khaki , Hieu Pham , Ye Han , Andy Kuhl , Wade Kent , Lizhi Wang