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Visual localization is the task of accurate camera pose estimation in a known scene. It is a key problem in computer vision and robotics, with applications including self-driving cars, Structure-from-Motion, SLAM, and Mixed Reality.…

Computer Vision and Pattern Recognition · Computer Science 2019-03-19 Torsten Sattler , Qunjie Zhou , Marc Pollefeys , Laura Leal-Taixe

Vision based localization is the problem of inferring the pose of the camera given a single image. One solution to this problem is to learn a deep neural network to infer the pose of a query image after learning on a dataset of images with…

Machine Learning · Computer Science 2019-11-11 Carlos Lassance , Yasir Latif , Ravi Garg , Vincent Gripon , Ian Reid

Due to the pervasiveness of image capturing devices in every-day life, images of individuals are routinely captured. Although this has enabled many benefits, it also infringes on personal privacy. A promising direction in research on…

Cryptography and Security · Computer Science 2021-02-23 William Croft , Jörg-Rüdiger Sack , Wei Shi

Face obfuscation (blurring, mosaicing, etc.) has been shown to be effective for privacy protection; nevertheless, object recognition research typically assumes access to complete, unobfuscated images. In this paper, we explore the effects…

Computer Vision and Pattern Recognition · Computer Science 2022-06-10 Kaiyu Yang , Jacqueline Yau , Li Fei-Fei , Jia Deng , Olga Russakovsky

Visual localization techniques often comprise a hierarchical localization pipeline, with a visual place recognition module used as a coarse localizer to initialize a pose refinement stage. While improving the pose refinement step has been…

Computer Vision and Pattern Recognition · Computer Science 2021-05-10 Ming Xu , Niko Sünderhauf , Michael Milford

Next-generation systems aim to increase both the speed and responsiveness of wireless communications, while supporting compelling applications such as edge and cloud computing, remote-Health, vehicle-to-infrastructure communications, etc.…

Signal Processing · Electrical Eng. & Systems 2021-09-21 Zhongxiang Wei , Christos Masouros , H. Vincent Poor , Athina P. Petropulu , Lajos Hanzo

Accurate camera pose estimation is a fundamental requirement for numerous applications, such as autonomous driving, mobile robotics, and augmented reality. In this work, we address the problem of estimating the global 6 DoF camera pose from…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Mohammad Altillawi

Accurate localization is a foundational capacity, required for autonomous vehicles to accomplish other tasks such as navigation or path planning. It is a common practice for vehicles to use GPS to acquire location information. However, the…

Computer Vision and Pattern Recognition · Computer Science 2020-10-21 Dongfang Liu , Yiming Cui , Xiaolei Guo , Wei Ding , Baijian Yang , Yingjie Chen

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

We introduce a novel privacy-preserving methodology for performing Visual Question Answering on the edge. Our method constructs a symbolic representation of the visual scene, using a low-complexity computer vision model that jointly…

Computer Vision and Pattern Recognition · Computer Science 2022-02-17 Cristian-Paul Bara , Qing Ping , Abhinav Mathur , Govind Thattai , Rohith MV , Gaurav S. Sukhatme

Visual localization is the problem of estimating the position and orientation from which a given image (or a sequence of images) is taken in a known scene. It is an important part of a wide range of computer vision and robotics…

Computer Vision and Pattern Recognition · Computer Science 2021-09-13 Ara Jafarzadeh , Manuel Lopez Antequera , Pau Gargallo , Yubin Kuang , Carl Toft , Fredrik Kahl , Torsten Sattler

Recent advances in deep learning and computer vision offer an excellent opportunity to investigate high-level visual analysis tasks such as human localization and human pose estimation. Although the performance of human localization and…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Somnuk Phon-Amnuaisuk , Ken T. Murata , La-Or Kovavisaruch , Tiong-Hoo Lim , Praphan Pavarangkoon , Takamichi Mizuhara

Image based localization is a classical computer vision challenge, with several well-known datasets. Generally, datasets consist of a visual 3D database that captures the modeled scenery, as well as query images whose 3D pose is to be…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Masud Fahim , Ilona Söchting , Luca Ferranti , Juho Kannala , Jani Boutellier

Automated machine vision pipelines do not need the exact visual content to perform their tasks. Therefore, there is a potential to remove private information from the data without significantly affecting the machine vision accuracy. We…

Image and Video Processing · Electrical Eng. & Systems 2022-10-04 Bardia Azizian , Ivan V. Bajić

The popularity of cyber-physical systems is fueling the rapid growth of location-based services. This poses the risk of location privacy disclosure. Effective privacy preservation is foremost for various mobile applications. Recently,…

Cryptography and Security · Computer Science 2022-11-28 Shun Zhang , Pengfei Lan , Benfei Duan , Zhili Chen , Hong Zhong , Neal N. Xiong

Applications providing location-based services (LBS) have gained much attention and importance with the notion of the internet of things (IoT). Users are utilizing LBS by providing their location information to third-party service…

Cryptography and Security · Computer Science 2025-01-23 Sonia Sabir , Inayat Ali , Eraj Khan

Compositing human figures into scene images has broad applications in areas such as entertainment and advertising. However, existing methods often cannot handle occlusion of the inserted person by foreground objects and unnaturally place…

Graphics · Computer Science 2025-05-08 Shun Masuda , Yuki Endo , Yoshihiro Kanamori

Local Differential Privacy (LDP) is the gold standard trust model for privacy-preserving machine learning by guaranteeing privacy at the data source. However, its application to image data has long been considered impractical due to the…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Yuanming Cao , Chengqi Li , Wenbo He

In this paper, an artificial noise-aided strategy is presented for location-privacy preservation. A novel framework for the reduction of location-privacy leakage is introduced, where structured artificial noise is designed to degrade the…

Signal Processing · Electrical Eng. & Systems 2023-02-20 Jianxiu Li , Urbashi Mitra

Visual localization, i.e., the problem of camera pose estimation, is a central component of applications such as autonomous robots and augmented reality systems. A dominant approach in the literature, shown to scale to large scenes and to…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Vojtech Panek , Zuzana Kukelova , Torsten Sattler