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In 5G, beam training consists of the efficient association of users to beams for a given beamforming codebook used at the base station and the given propagation environment in the cell. We propose a convolutional neural network approach…

Signal Processing · Electrical Eng. & Systems 2025-10-21 Fabian Jaensch , Giuseppe Caire , Begüm Demir

We solve object localisation in partial scenes, a new problem of estimating the unknown position of an object (e.g. where is the bag?) given a partial 3D scan of a scene. The proposed solution is based on a novel scene graph model, the…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Francesco Giuliari , Geri Skenderi , Marco Cristani , Yiming Wang , Alessio Del Bue

Camera pose estimation in known scenes is a 3D geometry task recently tackled by multiple learning algorithms. Many regress precise geometric quantities, like poses or 3D points, from an input image. This either fails to generalize to new…

Supervised keypoint localization methods rely on large manually labeled image datasets, where objects can deform, articulate, or occlude. However, creating such large keypoint labels is time-consuming and costly, and is often error-prone…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Xingzhe He , Gaurav Bharaj , David Ferman , Helge Rhodin , Pablo Garrido

3D Gaussian Splatting (3DGS) has recently emerged as a powerful scene representation and is increasingly used for visual localization and pose refinement. However, despite its high-quality differentiable rendering, the robustness of…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Mangyu Kong , Jaewon Lee , Seongwon Lee , Euntai Kim

Object pose estimation plays a vital role in embodied AI and computer vision, enabling intelligent agents to comprehend and interact with their surroundings. Despite the practicality of category-level pose estimation, current approaches…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Jiyao Zhang , Mingdong Wu , Hao Dong

Grasping unknown objects from a single view has remained a challenging topic in robotics due to the uncertainty of partial observation. Recent advances in large-scale models have led to benchmark solutions such as GraspNet-1Billion.…

Robotics · Computer Science 2025-07-17 Hao Chen , Takuya Kiyokawa , Zhengtao Hu , Weiwei Wan , Kensuke Harada

Vision-language models (VLMs) have advanced rapidly, yet their capacity for image-grounded geolocation in open-world conditions, a task that is challenging and of demand in real life, has not been comprehensively evaluated. We present…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Zhaofang Qian , Hardy Chen , Zeyu Wang , Li Zhang , Zijun Wang , Xiaoke Huang , Hui Liu , Xianfeng Tang , Zeyu Zheng , Haoqin Tu , Cihang Xie , Yuyin Zhou

Current dataset collection methods typically scrape large amounts of data from the web. While this technique is extremely scalable, data collected in this way tends to reinforce stereotypical biases, can contain personally identifiable…

Computer Vision and Pattern Recognition · Computer Science 2025-09-15 Vikram V. Ramaswamy , Sing Yu Lin , Dora Zhao , Aaron B. Adcock , Laurens van der Maaten , Deepti Ghadiyaram , Olga Russakovsky

An important problem in forensic analyses is identifying the provenance of materials at a crime scene, such as biological material on a piece of clothing. This procedure, known as geolocation, is conventionally guided by expert knowledge of…

We present a robust and real-time monocular six degree of freedom visual relocalization system. We use a Bayesian convolutional neural network to regress the 6-DOF camera pose from a single RGB image. It is trained in an end-to-end manner…

Computer Vision and Pattern Recognition · Computer Science 2016-02-19 Alex Kendall , Roberto Cipolla

Appearance-based gaze estimation aims to predict the 3D eye gaze direction from a single image. While recent deep learning-based approaches have demonstrated excellent performance, they usually assume one calibrated face in each input image…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Mingfang Zhang , Yunfei Liu , Feng Lu

We propose SGLoc, a novel localization system that directly regresses camera poses from 3D Gaussian Splatting (3DGS) representation by leveraging semantic information. Our method utilizes the semantic relationship between 2D image and 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Beining Xu , Siting Zhu , Hesheng Wang

Recent research has demonstrated the ability to estimate gaze on mobile devices by performing inference on the image from the phone's front-facing camera, and without requiring specialized hardware. While this offers wide potential…

Computer Vision and Pattern Recognition · Computer Science 2017-11-28 Matan Sela , Pingmei Xu , Junfeng He , Vidhya Navalpakkam , Dmitry Lagun

Visual localization, i.e., camera pose estimation in a known scene, is a core component of technologies such as autonomous driving and augmented reality. State-of-the-art localization approaches often rely on image retrieval techniques for…

Computer Vision and Pattern Recognition · Computer Science 2020-12-02 Noé Pion , Martin Humenberger , Gabriela Csurka , Yohann Cabon , Torsten Sattler

The standard approach for visual place recognition is to use global image descriptors to retrieve the most similar database images for a given query image. The results can then be further improved with re-ranking methods that re-order the…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Gustav Hanning , Gabrielle Flood , Viktor Larsson

The challenges of learning a robust 6D pose function lie in 1) severe occlusion and 2) systematic noises in depth images. Inspired by the success of point-pair features, the goal of this paper is to recover the 6D pose of an object instance…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Zelin Xu , Yichen Zhang , Ke Chen , Kui Jia

Despite remarkable progress in image translation, the complex scene with multiple discrepant objects remains a challenging problem. The translated images have low fidelity and tiny objects in fewer details causing unsatisfactory performance…

Computer Vision and Pattern Recognition · Computer Science 2022-12-26 Liyun Zhang , Photchara Ratsamee , Bowen Wang , Zhaojie Luo , Yuki Uranishi , Manabu Higashida , Haruo Takemura

Camera pose estimation is an important problem in computer vision. Common techniques either match the current image against keyframes with known poses, directly regress the pose, or establish correspondences between keypoints in the image…

Computer Vision and Pattern Recognition · Computer Science 2019-07-03 Tommaso Cavallari , Stuart Golodetz , Nicholas A. Lord , Julien Valentin , Victor A. Prisacariu , Luigi Di Stefano , Philip H. S. Torr

This paper proposes a novel method for geo-tracking, i.e. continuous metric self-localization in outdoor environments by registering a vehicle's sensor information with aerial imagery of an unseen target region. Geo-tracking methods offer…

Computer Vision and Pattern Recognition · Computer Science 2022-09-12 Florian Fervers , Sebastian Bullinger , Christoph Bodensteiner , Michael Arens , Rainer Stiefelhagen