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Visual place recognition (VPR) using deep networks has achieved state-of-the-art performance. However, most of them require a training set with ground truth sensor poses to obtain positive and negative samples of each observation's spatial…

Computer Vision and Pattern Recognition · Computer Science 2024-11-21 Chao Chen , Zegang Cheng , Xinhao Liu , Yiming Li , Li Ding , Ruoyu Wang , Chen Feng

Sequence-based visual place recognition (VPR) for SLAM and robot relocalization must decide whether the retrieved top-1 candidate is safe to accept. Conformal prediction is a natural framework for this accept/reject decision, but its…

Robotics · Computer Science 2026-05-28 Ha Sier , Jiaqiang Zhang , Zhuo Zou , Xianjia Yu , Tomi Westerlund

Recent work by Suenderhauf et al. [1] demonstrated improved visual place recognition using proposal regions coupled with features from convolutional neural networks (CNN) to match landmarks between views. In this work we extend the approach…

Computer Vision and Pattern Recognition · Computer Science 2016-08-16 Pilailuck Panphattarasap , Andrew Calway

This research proposes a hybrid Machine Learning and metaheuristic mechanism that is designed to solve Vehicle Routing Problems (VRPs). The main of our method is an edge solution selector model, which classifies solution edges to identify…

Machine Learning · Computer Science 2025-08-21 Bachtiar Herdianto , Romain Billot , Flavien Lucas , Marc Sevaux , Daniele Vigo

Salient object detection (SOD) aims to segment visually prominent regions in images and serves as a foundational task for various computer vision applications. We posit that SOD can now reach near-supervised accuracy without a single…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Muhammad Umer Ramzan , Ali Zia , Abdelwahed Khamis , Noman Ali , Usman Ali , Wei Xiang

Training deep models for LiDAR semantic segmentation is challenging due to the inherent sparsity of point clouds. Utilizing temporal data is a natural remedy against the sparsity problem as it makes the input signal denser. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Xiaopei Wu , Yuenan Hou , Xiaoshui Huang , Binbin Lin , Tong He , Xinge Zhu , Yuexin Ma , Boxi Wu , Haifeng Liu , Deng Cai , Wanli Ouyang

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

This paper addresses Visual Place Recognition (VPR), which is essential for the safe navigation of mobile robots. The solution we propose employs panoramic images and deep learning models, which are fine-tuned with triplet loss functions…

Robotics · Computer Science 2025-10-03 Marcos Alfaro , Juan José Cabrera , María Flores , Óscar Reinoso , Luis Payá

Unsupervised approaches to learning in neural networks are of substantial interest for furthering artificial intelligence, both because they would enable the training of networks without the need for large numbers of expensive annotations,…

Computer Vision and Pattern Recognition · Computer Science 2019-04-11 Chengxu Zhuang , Alex Lin Zhai , Daniel Yamins

Image matching, which establishes correspondences between two-view images to recover 3D structure and camera geometry, serves as a cornerstone in computer vision and underpins a wide range of applications, including visual localization, 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-06-06 Shihua Zhang , Zizhuo Li , Kaining Zhang , Yifan Lu , Yuxin Deng , Linfeng Tang , Xingyu Jiang , Jiayi Ma

The use of local detectors and descriptors in typical computer vision pipelines work well until variations in viewpoint and appearance change become extreme. Past research in this area has typically focused on one of two approaches to this…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Udit Singh Parihar , Aniket Gujarathi , Kinal Mehta , Satyajit Tourani , Sourav Garg , Michael Milford , K. Madhava Krishna

In the last few years, Deep Convolutional Neural Networks (D-CNNs) have shown state-of-the-art (SOTA) performance for Visual Place Recognition (VPR), a pivotal component of long-term intelligent robotic vision (vision-aware localization and…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Ahmad Khaliq , Shoaib Ehsan , Michael Milford , Klaus McDonald-Maier

Graph alignment, which aims at identifying corresponding entities across multiple networks, has been widely applied in various domains. As the graphs to be aligned are usually constructed from different sources, the inconsistency issues of…

Databases · Computer Science 2023-04-21 Jianheng Tang , Weiqi Zhang , Jiajin Li , Kangfei Zhao , Fugee Tsung , Jia Li

One-stage object detectors such as SSD or YOLO already have shown promising accuracy with small memory footprint and fast speed. However, it is widely recognized that one-stage detectors have difficulty in detecting small objects while they…

Computer Vision and Pattern Recognition · Computer Science 2017-09-19 Sanghyun Woo , Soonmin Hwang , In So Kweon

Place recognition is essential to maintain global consistency in large-scale localization systems. While research in urban environments has progressed significantly using LiDARs or cameras, applications in natural forest-like environments…

Computer Vision and Pattern Recognition · Computer Science 2025-03-07 Yanqing Shen , Turcan Tuna , Marco Hutter , Cesar Cadena , Nanning Zheng

Despite rapid developments in visual image-based road detection, robustly identifying road areas in visual images remains challenging due to issues like illumination changes and blurry images. To this end, LiDAR sensor data can be…

Computer Vision and Pattern Recognition · Computer Science 2019-05-17 Zhe Chen , Jing Zhang , Dacheng Tao

Deep Reinforcement Learning (DRL) has emerged as a promising approach for solving Combinatorial Optimization (CO) problems, such as the 3D Bin Packing Problem (3D-BPP), Traveling Salesman Problem (TSP), or Vehicle Routing Problem (VRP), but…

Machine Learning · Computer Science 2026-01-30 Han Fang , Paul Weng , Yutong Ban

Automatic License-Plate Recognition (ALPR) plays a pivotal role in Intelligent Transportation Systems (ITS) as a fundamental element of Smart Cities. However, due to its high variability, ALPR faces challenging issues more efficiently…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Behnoud Shafiezadeh , Amir Mashmool , Farshad Eshghi , Manoochehr Kelarestaghi

Existing pedestrian attribute recognition (PAR) algorithms adopt pre-trained CNN (e.g., ResNet) as their backbone network for visual feature learning, which might obtain sub-optimal results due to the insufficient employment of the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Xiao Wang , Jiandong Jin , Chenglong Li , Jin Tang , Cheng Zhang , Wei Wang

Visual Place recognition is commonly addressed as an image retrieval problem. However, retrieval methods are impractical to scale to large datasets, densely sampled from city-wide maps, since their dimension impact negatively on the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-08 Gabriele Trivigno , Gabriele Berton , Juan Aragon , Barbara Caputo , Carlo Masone