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Federated Learning (FL) on graphs enables collaborative model training to enhance performance without compromising the privacy of each client. However, existing methods often overlook the mutable nature of graph data, which frequently…

Machine Learning · Computer Science 2025-03-07 Sungwon Kim , Yoonho Lee , Yunhak Oh , Namkyeong Lee , Sukwon Yun , Junseok Lee , Sein Kim , Carl Yang , Chanyoung Park

Reliable localization is critical for robot navigation, yet most existing systems implicitly assume that all viewing directions at a location are equally informative. In practice, localization becomes unreliable when the robot observes…

Robotics · Computer Science 2025-08-29 Jiajie Li , Boyang Sun , Luca Di Giammarino , Hermann Blum , Marc Pollefeys

We introduce a lifelong imitation learning framework that enables continual policy refinement across sequential tasks under realistic memory and data constraints. Our approach departs from conventional experience replay by operating…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Fanqi Yu , Matteo Tiezzi , Tommaso Apicella , Cigdem Beyan , Vittorio Murino

Despite advances in human activity recognition (HAR) with different modalities, a precise, robust, and accurate daily log system is not yet available. Current solutions primarily rely on controlled, lab-based data collection, which limits…

Human-Computer Interaction · Computer Science 2026-01-07 Lixing He , Bufang Yang , Di Duan , Zhenyu Yan , Guoliang Xing

LiDAR relocalization plays a crucial role in many fields, including robotics, autonomous driving, and computer vision. LiDAR-based retrieval from a database typically incurs high computation storage costs and can lead to globally inaccurate…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Sijie Wang , Qiyu Kang , Rui She , Wei Wang , Kai Zhao , Yang Song , Wee Peng Tay

Accurate and consistent vehicle localization in urban areas is challenging due to the large-scale and complicated environments. In this paper, we propose onlineFGO, a novel time-centric graph-optimization-based localization method that…

Robotics · Computer Science 2023-09-04 Haoming Zhang , Felix Widmayer , Lars Lünnemann , Dirk Abel

In partially known environments, robots must combine exploration to gather information with task planning for efficient execution. To address this challenge, we propose EPoG, an Exploration-based sequential manipulation Planning framework…

Robotics · Computer Science 2026-02-17 Heqing Yang , Ziyuan Jiao , Shu Wang , Yida Niu , Si Liu , Hangxin Liu

Modern autonomous vehicles and robots utilize versatile sensors for localization and mapping. The fidelity of these maps is paramount, as an accurate environmental representation is a prerequisite for stable and precise localization. Factor…

Robotics · Computer Science 2026-02-10 Mark Griguletskii , Danil Belov , Pavel Osinenko

Locating human-object interaction (HOI) actions within video serves as the foundation for multiple downstream tasks, such as human behavior analysis and human-robot skill transfer. Current temporal action localization methods typically rely…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Erhang Zhang , Junyi Ma , Yin-Dong Zheng , Yixuan Zhou , Hesheng Wang

This paper introduces a novel framework for high-accuracy outdoor user equipment (UE) positioning that applies a conditional generative diffusion model directly to high-dimensional massive MIMO channel state information (CSI). Traditional…

Networking and Internet Architecture · Computer Science 2025-10-17 Taekyun Lee , Tommaso Balercia , Heasung Kim , Hyeji Kim , Jeffrey G. Andrews

Existing localization methods that intensively leverage the environment-specific received signal strength (RSS) or channel state information (CSI) of wireless signals are rather accurate in certain environments. However, these methods,…

Signal Processing · Electrical Eng. & Systems 2023-08-30 Jun Gao , Dongze Wu , Feng Yin , Qinglei Kong , Lexi Xu , Shuguang Cui

We built our pipeline EgoLoc-v1, mainly inspired by EgoLoc. We propose a model ensemble strategy to improve the camera pose estimation part of the VQ3D task, which has been proven to be essential in previous work. The core idea is not only…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Jinjie Mai , Abdullah Hamdi , Silvio Giancola , Chen Zhao , Bernard Ghanem

Accurate localization is essential for autonomous driving, but GNSS-based methods struggle in challenging environments such as urban canyons. Cross-view pose optimization offers an effective solution by directly estimating vehicle pose…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Wooju Lee , Juhye Park , Dasol Hong , Changki Sung , Youngwoo Seo , Dongwan Kang , Hyun Myung

Due to the rising concern of data privacy, it's reasonable to assume the local client data can't be transferred to a centralized server, nor their associated identity label is provided. To support continuous learning and fill the last-mile…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Wenbin Zhu , Chien-Yi Wang , Kuan-Lun Tseng , Shang-Hong Lai , Baoyuan Wang

This paper presents a data-driven localization framework with high precision in time-varying complex multipath environments, such as dense urban areas and indoors, where GPS and model-based localization techniques come short. We consider…

Computer Vision and Pattern Recognition · Computer Science 2021-01-25 Farzam Hejazi , Katarina Vuckovic , Nazanin Rahnavard

Local guidance has recently proven to be a powerful driver of empirical performance in real-time, suboptimal multi-agent pathfinding (MAPF), improving the scalable configuration-based solver LaCAM. By injecting informative spatiotemporal…

Multiagent Systems · Computer Science 2026-05-19 Tomoki Arita , Keisuke Okumura

Recent learning-based approaches have achieved impressive results in the field of single-shot camera localization. However, how best to fuse multiple modalities (e.g., image and depth) and to deal with degraded or missing input are less…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Kaichen Zhou , Changhao Chen , Bing Wang , Muhamad Risqi U. Saputra , Niki Trigoni , Andrew Markham

We introduce a discriminative multimodal descriptor based on a pair of sensor readings: a point cloud from a LiDAR and an image from an RGB camera. Our descriptor, named MinkLoc++, can be used for place recognition, re-localization and loop…

Computer Vision and Pattern Recognition · Computer Science 2021-04-15 Jacek Komorowski , Monika Wysoczanska , Tomasz Trzcinski

As technology advances in autonomous mobile robots, mobile service robots have been actively used more and more for various purposes. Especially, serving robots have been not surprising products anymore since the COVID-19 pandemic. One of…

Robotics · Computer Science 2023-07-26 Jieun Lee , Hakjun Lee , Jiyong Oh

Text-to-point-cloud localization enables robots to understand spatial positions through natural language descriptions, which is crucial for human-robot collaboration in applications such as autonomous driving and last-mile delivery.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Tianyi Shang , Zhenyu Li