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We propose a novel convolutional neural network architecture for estimating geospatial functions such as population density, land cover, or land use. In our approach, we combine overhead and ground-level images in an end-to-end trainable…

Computer Vision and Pattern Recognition · Computer Science 2017-08-11 Scott Workman , Menghua Zhai , David J. Crandall , Nathan Jacobs

Many areas of the world are without basic information on the socioeconomic well-being of the residing population due to limitations in existing data collection methods. Overhead images obtained remotely, such as from satellite or aircraft,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Ethan Brewer , Giovani Valdrighi , Parikshit Solunke , Joao Rulff , Yurii Piadyk , Zhonghui Lv , Jorge Poco , Claudio Silva

In this work, we introduce a Denser Feature Network (DenserNet) for visual localization. Our work provides three principal contributions. First, we develop a convolutional neural network (CNN) architecture which aggregates feature maps at…

Computer Vision and Pattern Recognition · Computer Science 2021-03-15 Dongfang Liu , Yiming Cui , Liqi Yan , Christos Mousas , Baijian Yang , Yingjie Chen

When one wants to train a neural network to perform semantic segmentation, creating pixel-level annotations for each of the images in the database is a tedious task. If he works with aerial or satellite images, which are usually very large,…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Adrien Nivaggioli , Hicham Randrianarivo

Learning from weakly-supervised data is one of the main challenges in machine learning and computer vision, especially for tasks such as image semantic segmentation where labeling is extremely expensive and subjective. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2016-12-09 Xianming Liu , Amy Zhang , Tobias Tiecke , Andreas Gros , Thomas S. Huang

A satellite image is a remotely sensed image data, where each pixel represents a specific location on earth. The pixel value recorded is the reflection radiation from the earth's surface at that location. Multispectral images are those that…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Purbarag Pathak Choudhury , Ujjal Kr Dutta , Dhruba Kr Bhattacharyya

Knowing where people live is a fundamental component of many decision making processes such as urban development, infectious disease containment, evacuation planning, risk management, conservation planning, and more. While bottom-up, survey…

Artificial Intelligence · Computer Science 2017-08-31 Caleb Robinson , Fred Hohman , Bistra Dilkina

This paper proposes a novel domain adaptation algorithm to handle the challenges posed by the satellite and aerial imagery, and demonstrates its effectiveness on the built-up region segmentation problem. Built-up area estimation is an…

Computer Vision and Pattern Recognition · Computer Science 2020-07-07 Javed Iqbal , Mohsen Ali

This paper introduces the use of single layer and deep convolutional networks for remote sensing data analysis. Direct application to multi- and hyper-spectral imagery of supervised (shallow or deep) convolutional networks is very…

Computer Vision and Pattern Recognition · Computer Science 2015-11-26 Adriana Romero , Carlo Gatta , Gustau Camps-Valls

Satellite imagery has long been an attractive data source that provides a wealth of information on human-inhabited areas. While super resolution satellite images are rapidly becoming available, little study has focused on how to extract…

Computer Vision and Pattern Recognition · Computer Science 2019-12-19 Sungwon Han , Donghyun Ahn , Hyunji Cha , Jeasurk Yang , Sungwon Park , Meeyoung Cha

Weakly supervised learning of object detection is an important problem in image understanding that still does not have a satisfactory solution. In this paper, we address this problem by exploiting the power of deep convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2016-12-20 Hakan Bilen , Andrea Vedaldi

We seek to improve crowd counting as we perceive limits of currently prevalent density map estimation approach on both prediction accuracy and time efficiency. We leverage multilevel pixelation of density map as it helps improve SNR of…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Zhuojun Chen , Junhao Cheng , Yuchen Yuan , Dongping Liao , Yizhou Li , Jiancheng Lv

The explosive growth of digital images and the widespread availability of image editing tools have made image manipulation detection an increasingly critical challenge. Current deep learning-based manipulation detection methods excel in…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Ziyong Wang , Charith Abhayaratne

Dictionary learning and sparse coding have been widely studied as mechanisms for unsupervised feature learning. Unsupervised learning could bring enormous benefit to the processing of hyperspectral images and to other remote sensing data…

Image and Video Processing · Electrical Eng. & Systems 2022-02-03 Joshua Bruton , Hairong Wang

Rapid growth in the field of quantitative digital image analysis is paving the way for researchers to make precise measurements about objects in an image. To compute quantities from the image such as the density of compressed materials or…

Computer Vision and Pattern Recognition · Computer Science 2017-07-31 Marylesa Howard , Margaret C. Hock , B. T. Meehan , Leora Dresselhaus-Cooper

In the weakly supervised localization setting, supervision is given as an image-level label. We propose to employ an image classifier $f$ and to train a generative network $g$ that outputs, given the input image, a per-pixel weight map that…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Tal Shaharabany , Lior Wolf

Density estimation for geospatial data ideally relies on precise geocoordinates, typically defined by longitude and latitude. However, such detailed information is often unavailable due to confidentiality constraints. As a result, analysts…

Applications · Statistics 2025-08-06 Michael Mühlbauer , Timo Schmid

In this paper, we attempt to address the challenging problem of counting built-structures in the satellite imagery. Building density is a more accurate estimate of the population density, urban area expansion and its impact on the…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Anza Shakeel , Waqas Sultani , Mohsen Ali

Building coverage statistics provide crucial insights into the urbanization, infrastructure, and poverty level of a region, facilitating efforts towards alleviating poverty, building sustainable cities, and allocating infrastructure…

Computer Vision and Pattern Recognition · Computer Science 2023-01-06 Enci Liu , Chenlin Meng , Matthew Kolodner , Eun Jee Sung , Sihang Chen , Marshall Burke , David Lobell , Stefano Ermon

In this work, we propose new objective functions to train deep neural network based density ratio estimators and apply it to a change point detection problem. Existing methods use linear combinations of kernels to approximate the density…

Machine Learning · Computer Science 2019-05-27 Haidar Khan , Lara Marcuse , Bülent Yener
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