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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

This work details Sighthounds fully automated license plate detection and recognition system. The core technology of the system is built using a sequence of deep Convolutional Neural Networks (CNNs) interlaced with accurate and efficient…

Computer Vision and Pattern Recognition · Computer Science 2017-03-30 Syed Zain Masood , Guang Shu , Afshin Dehghan , Enrique G. Ortiz

Visual Place Recognition (VPR) often fails under extreme environmental changes and perceptual aliasing. Furthermore, standard systems cannot perform "blind" localization from verbal descriptions alone, a capability needed for applications…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Ofer Idan , Dan Badur , Yosi Keller , Yoli Shavit

The acquisition of real-time and accurate traffic arrival information is of vital importance for proactive traffic control systems, especially in partially connected vehicle environments. License plate recognition (LPR) data that record…

Machine Learning · Computer Science 2024-11-13 Yang He , Chengchuan An , Jiawei Lu , Yao-Jan Wu , Zhenbo Lu , Jingxin Xia

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

Computer vision coupled with Deep Learning (DL) techniques bring out a substantial prospect in the field of traffic control, monitoring and law enforcing activities. This paper presents a YOLOv4 object detection model in which the…

Computer Vision and Pattern Recognition · Computer Science 2022-02-25 Md. Saif Hassan Onim , Muhaiminul Islam Akash , Mahmudul Haque , Raiyan Ibne Hafiz

In autonomous driving, robust place recognition is critical for global localization and loop closure detection. While inter-modality fusion of camera and LiDAR data in multimodal place recognition (MPR) has shown promise in overcoming the…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Jingyi Xu , Zhangshuo Qi , Zhongmiao Yan , Xuyu Gao , Qianyun Jiao , Songpengcheng Xia , Xieyuanli Chen , Ling Pei

In this paper, we present an algorithm for real-world license plate recognition (LPR) from a low-quality image. Our method is built upon a framework that includes denoising and rectification, and each task is conducted by Convolutional…

Computer Vision and Pattern Recognition · Computer Science 2019-10-10 Younkwan Lee , Juhyun Lee , Hoyeon Ahn , Moongu Jeon

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

Automatic License Plate Recognition (ALPR) systems have shown remarkable performance on license plates (LPs) from multiple regions due to advances in deep learning and the increasing availability of datasets. The evaluation of deep ALPR…

Computer Vision and Pattern Recognition · Computer Science 2022-12-22 Rayson Laroca , Everton V. Cardoso , Diego R. Lucio , Valter Estevam , David Menotti

We evaluated a lightweight Convolutional Neural Network (CNN) called LPRNet [1] for automatic License Plate Recognition (LPR). We evaluated the algorithm on two datasets, one composed of real license plate images and the other of synthetic…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Marcel Del Castillo Velarde , Gissel Velarde

License plate recognition systems have a very important role in many applications such as toll management, parking control, and traffic management. In this paper, a framework of deep convolutional neural networks is proposed for Iranian…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Mojtaba Shahidi Zandi , Roozbeh Rajabi

Implicit degradation estimation-based blind super-resolution (IDE-BSR) hinges on extracting the implicit degradation representation (IDR) of the LR image and adapting it to LR image features to guide HR detail restoration. Although IDE-BSR…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Jiang Yuan , JI Ma , Bo Wang , Guanzhou Ke , Weiming Hu

Place recognition is a critical component of autonomous vehicles and robotics, enabling global localization in GPS-denied environments. Recent advances have spurred significant interest in multimodal place recognition (MPR), which leverages…

Computer Vision and Pattern Recognition · Computer Science 2025-12-24 Zhangshuo Qi , Jingyi Xu , Luqi Cheng , Shichen Wen , Yiming Ma , Guangming Xiong

Large Language Models (LLMs) and their multimodal variants (LVLMs) hold immense promise for scientific and engineering applications, particularly in processing visual information like scientific diagrams. However, their practical deployment…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Minghao Zhou , Rafael Souza , Yaqian Hu , Luming Che

Ground penetrating radar (GPR) has become a rapid and non-destructive solution for road subsurface distress (RSD) detection. However, recognizing RSD from GPR images is labor-intensive and heavily relies on the expertise of inspectors. Deep…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Chang Peng , Bao Yang , Meiqi Li , Ge Zhang , Hui Sun , Zhenyu Jiang

Autonomous vehicles (AVs) require reliable traffic sign recognition and robust lane detection capabilities to ensure safe navigation in complex and dynamic environments. This paper introduces an integrated approach combining advanced deep…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Chandan Kumar Sah , Ankit Kumar Shaw , Xiaoli Lian , Arsalan Shahid Baig , Tuopu Wen , Kun Jiang , Mengmeng Yang , Diange Yang

Visual place recognition (VPR) - the act of recognizing a familiar visual place - becomes difficult when there is extreme environmental appearance change or viewpoint change. Particularly challenging is the scenario where both phenomena…

Visual Place Recognition (VPR) is the process of recognising a previously visited place using visual information, often under varying appearance conditions and viewpoint changes and with computational constraints. VPR is related to the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Mubariz Zaffar , Sourav Garg , Michael Milford , Julian Kooij , David Flynn , Klaus McDonald-Maier , Shoaib Ehsan

In vision-based robot localization and SLAM, Visual Place Recognition (VPR) is essential. This paper addresses the problem of VPR, which involves accurately recognizing the location corresponding to a given query image. A popular approach…

Robotics · Computer Science 2024-10-28 Soojin Woo , Seong-Woo Kim