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Fully automatic large-scale land cover mapping belongs to the core challenges addressed by the remote sensing community. Usually, the basis of this task is formed by (supervised) machine learning models. However, in spite of recent growth…

Computer Vision and Pattern Recognition · Computer Science 2020-04-29 Michael Schmitt , Jonathan Prexl , Patrick Ebel , Lukas Liebel , Xiao Xiang Zhu

Grounding textual phrases in visual content is a meaningful yet challenging problem with various potential applications such as image-text inference or text-driven multimedia interaction. Most of the current existing methods adopt the…

Computer Vision and Pattern Recognition · Computer Science 2018-05-03 Zhiyuan Fang , Shu Kong , Tianshu Yu , Yezhou Yang

Visual localization is the task of estimating camera pose in a known scene, which is an essential problem in robotics and computer vision. However, long-term visual localization is still a challenge due to the environmental appearance…

Robotics · Computer Science 2022-12-02 Yuxuan Chen , Timothy D. Barfoot

The task of large-scale retrieval-based image localization is to estimate the geographical location of a query image by recognizing its nearest reference images from a city-scale dataset. However, the general public benchmarks only provide…

Computer Vision and Pattern Recognition · Computer Science 2020-07-10 Yixiao Ge , Haibo Wang , Feng Zhu , Rui Zhao , Hongsheng Li

Weakly-supervised learning approaches have gained significant attention due to their ability to reduce the effort required for human annotations in training neural networks. This paper investigates a framework for weakly-supervised object…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Byeongkeun Kang , Sinhae Cha , Yeejin Lee

Image retrieval-based cross-view localization methods often lead to very coarse camera pose estimation, due to the limited sampling density of the database satellite images. In this paper, we propose a method to increase the accuracy of a…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Yujiao Shi , Fei Wu , Akhil Perincherry , Ankit Vora , Hongdong Li

This paper addresses the problem of vehicle-mounted camera localization by matching a ground-level image with an overhead-view satellite map. Existing methods often treat this problem as cross-view image retrieval, and use learned deep…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Yujiao Shi , Hongdong Li

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

Publicly available satellite imagery can be an ubiquitous, cheap, and powerful tool for vehicle localisation when a prior sensor map is unavailable. However, satellite images are not directly comparable to data from ground range sensors…

Robotics · Computer Science 2020-09-24 Tim Y. Tang , Daniele De Martini , Shangzhe Wu , Paul Newman

Despite the advancements in deep learning for camera relocalization tasks, obtaining ground truth pose labels required for the training process remains a costly endeavor. While current weakly supervised methods excel in lightweight label…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Jialu Wang , Kaichen Zhou , Andrew Markham , Niki Trigoni

We address the problem of ground-to-satellite image geo-localization, that is, estimating the camera latitude, longitude and orientation (azimuth angle) by matching a query image captured at the ground level against a large-scale database…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Yujiao Shi , Xin Yu , Liu Liu , Dylan Campbell , Piotr Koniusz , Hongdong Li

Automatic road extraction from satellite imagery using deep learning is a viable alternative to traditional manual mapping. Therefore it has received considerable attention recently. However, most of the existing methods are supervised and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-15 Shiqiao Meng , Zonglin Di , Siwei Yang , Yin Wang

Low-end and compact mobile cameras demonstrate limited photo quality mainly due to space, hardware and budget constraints. In this work, we propose a deep learning solution that translates photos taken by cameras with limited capabilities…

Computer Vision and Pattern Recognition · Computer Science 2018-03-06 Andrey Ignatov , Nikolay Kobyshev , Radu Timofte , Kenneth Vanhoey , Luc Van Gool

The application of deep neural networks to remote sensing imagery is often constrained by the lack of ground-truth annotations. Adressing this issue requires models that generalize efficiently from limited amounts of labeled data, allowing…

Image and Video Processing · Electrical Eng. & Systems 2024-10-08 Jules Bourcier , Gohar Dashyan , Jocelyn Chanussot , Karteek Alahari

Query-based video grounding is an important yet challenging task in video understanding, which aims to localize the target segment in an untrimmed video according to a sentence query. Most previous works achieve significant progress by…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Shentong Mo , Daizong Liu , Wei Hu

Visual grounding, which aims to build a correspondence between visual objects and their language entities, plays a key role in cross-modal scene understanding. One promising and scalable strategy for learning visual grounding is to utilize…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Yongfei Liu , Bo Wan , Lin Ma , Xuming He

PoseNet can map a photo to the position where it is taken, which is appealing in robotics. However, training PoseNet requires full supervision, where ground truth positions are non-trivial to obtain. Can we train PoseNet without knowing the…

Robotics · Computer Science 2021-04-13 Ruoyu Wang , Xuchu Xu , Li Ding , Yang Huang , Chen Feng

Image alignment tasks require accurate pixel correspondences, which are usually recovered by matching local feature descriptors. Such descriptors are often derived using supervised learning on existing datasets with ground truth…

Computer Vision and Pattern Recognition · Computer Science 2018-08-07 Jing Dong , Byron Boots , Frank Dellaert , Ranveer Chandra , Sudipta N. Sinha

Weakly supervised localization aims at finding target object regions using only image-level supervision. However, localization maps extracted from classification networks are often not accurate due to the lack of fine pixel-level…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Xiaolin Zhang , Yunchao Wei , Yi Yang

Recently proposed methods for weakly-supervised semantic segmentation have achieved impressive performance in predicting pixel classes despite being trained with only image labels which lack positional information. Because image annotations…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Lyndon Chan , Mahdi S. Hosseini , Konstantinos N. Plataniotis
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