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LiDAR-based Place Recognition (LPR) remains a critical task in Embodied Artificial Intelligence (AI) and Autonomous Driving, primarily addressing localization challenges in GPS-denied environments and supporting loop closure detection.…

Computer Vision and Pattern Recognition · Computer Science 2025-08-13 Jintao Cheng , Jiehao Luo , Xieyuanli Chen , Jin Wu , Rui Fan , Xiaoyu Tang , Wei Zhang

Visual place recognition is the task of recognizing a place depicted in an image based on its pure visual appearance without metadata. In visual place recognition, the challenges lie upon not only the changes in lighting conditions, camera…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Duc Canh Le , Chan Hyun Youn

Latent variable models like the Variational Auto-Encoder (VAE) are commonly used to learn representations of images. However, for downstream tasks like semantic classification, the representations learned by VAE are less competitive than…

Machine Learning · Statistics 2022-05-31 Mingtian Zhang , Tim Z. Xiao , Brooks Paige , David Barber

Variational AutoEncoders (VAEs) provide a means to generate representational latent embeddings. Previous research has highlighted the benefits of achieving representations that are disentangled, particularly for downstream tasks. However,…

Computer Vision and Pattern Recognition · Computer Science 2019-11-18 Matthew J. Vowels , Necati Cihan Camgoz , Richard Bowden

Ground penetrating radar (GPR) based localization has gained significant recognition in robotics due to its ability to detect stable subsurface features, offering advantages in environments where traditional sensors like cameras and LiDAR…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Pengyu Zhang , Xieyuanli Chen , Yuwei Chen , Beizhen Bi , Zhuo Xu , Tian Jin , Xiaotao Huang , Liang Shen

Vector quantised variational autoencoders (VQ-VAE) are characterised by three main components: 1) encoding visual data, 2) assigning $k$ different vectors in the so-called embedding space, and 3) decoding the learnt features. While images…

Computer Vision and Pattern Recognition · Computer Science 2020-10-01 Arash Akbarinia , Raquel Gil-Rodríguez , Alban Flachot , Matteo Toscani

Place recognition plays a crucial role in navigational assistance, and is also a challenging issue of assistive technology. The place recognition is prone to erroneous localization owing to various changes between database and query images.…

Computer Vision and Pattern Recognition · Computer Science 2019-09-17 Ruiqi Cheng , Kaiwei Wang , Jian Bai , Zhijie Xu

Visual navigation is essential for many applications in robotics, from manipulation, through mobile robotics to automated driving. Deep reinforcement learning (DRL) provides an elegant map-free approach integrating image processing,…

Robotics · Computer Science 2020-10-22 Jonáš Kulhánek , Erik Derner , Robert Babuška

Precise initialization plays a critical role in the performance of localization algorithms, especially in the context of robotics, autonomous driving, and computer vision. Poor localization accuracy is often a consequence of inaccurate…

Robotics · Computer Science 2025-05-15 Srinivas Ravuri , Yuan Xu , Martin Ludwig Zehetner , Ketan Motlag , Sahin Albayrak

People can easily imagine the potential sound while seeing an event. This natural synchronization between audio and visual signals reveals their intrinsic correlations. To this end, we propose to learn the audio-visual correlations from the…

Computer Vision and Pattern Recognition · Computer Science 2021-02-16 Ye Zhu , Yu Wu , Hugo Latapie , Yi Yang , Yan Yan

Visual place recognition (VPR), a fundamental task in computer vision and robotics, is the problem of identifying a place mainly based on visual information. Viewpoint and appearance changes, such as due to weather and seasonal variations,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-02 Maria Waheed , Michael Milford , Klaus McDonald-Maier , Shoaib Ehsan

We propose a novel method for geolocalizing Unmanned Aerial Vehicles (UAVs) in environments lacking Global Navigation Satellite Systems (GNSS). Current state-of-the-art techniques employ an offline-trained encoder to generate a vector…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Theo Di Piazza , Enric Meinhardt-Llopis , Gabriele Facciolo , Benedicte Bascle , Corentin Abgrall , Jean-Clement Devaux

Unsupervised representation learning holds the promise of exploiting large amounts of unlabeled data to learn general representations. A promising technique for unsupervised learning is the framework of Variational Auto-encoders (VAEs).…

Computer Vision and Pattern Recognition · Computer Science 2020-04-09 Kamal Gupta , Saurabh Singh , Abhinav Shrivastava

A key challenge in translating Visual Place Recognition (VPR) from the lab to long-term deployment is ensuring a priori that a system can meet user-specified performance requirements across different parts of an environment, rather than…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Somayeh Hussaini , Tobias Fischer , Michael Milford

Classical methods for model order selection often fail in scenarios with low SNR or few snapshots. Deep learning-based methods are promising alternatives for such challenging situations as they compensate lack of information in the…

Signal Processing · Electrical Eng. & Systems 2023-12-07 Michael Baur , Franz Weißer , Benedikt Böck , Wolfgang Utschick

Variational Autoencoder (VAE), a simple and effective deep generative model, has led to a number of impressive empirical successes and spawned many advanced variants and theoretical investigations. However, recent studies demonstrate that,…

Machine Learning · Computer Science 2019-01-08 Xuezhe Ma , Chunting Zhou , Eduard Hovy

Recent Vision-and-Language Navigation (VLN) advancements are promising, but their idealized assumptions about robot movement and control fail to reflect physically embodied deployment challenges. To bridge this gap, we introduce VLN-PE, a…

Robotics · Computer Science 2025-09-29 Liuyi Wang , Xinyuan Xia , Hui Zhao , Hanqing Wang , Tai Wang , Yilun Chen , Chengju Liu , Qijun Chen , Jiangmiao Pang

Autonomous Vehicles (AV) are becoming more capable of navigating in complex environments with dynamic and changing conditions. A key component that enables these intelligent vehicles to overcome such conditions and become more autonomous is…

Computer Vision and Pattern Recognition · Computer Science 2022-03-02 Tiago Barros , Ricardo Pereira , Luís Garrote , Cristiano Premebida , Urbano J. Nunes

Passive visual systems typically fail to recognize objects in the amodal setting where they are heavily occluded. In contrast, humans and other embodied agents have the ability to move in the environment, and actively control the viewing…

Computer Vision and Pattern Recognition · Computer Science 2019-04-10 Jianwei Yang , Zhile Ren , Mingze Xu , Xinlei Chen , David Crandall , Devi Parikh , Dhruv Batra

Visual Place Recognition is a task that aims to predict the coordinates of an image (called query) based solely on visual clues. Most commonly, a retrieval approach is adopted, where the query is matched to the most similar images from a…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Giovanni Barbarani , Mohamad Mostafa , Hajali Bayramov , Gabriele Trivigno , Gabriele Berton , Carlo Masone , Barbara Caputo
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