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Large-scale LiDAR mappings and localization leverage place recognition techniques to mitigate odometry drifts, ensuring accurate mapping. These techniques utilize scene representations from LiDAR point clouds to identify previously visited…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Raktim Gautam Goswami , Naman Patel , Prashanth Krishnamurthy , Farshad Khorrami

LiDAR point cloud analysis is a core task for 3D computer vision, especially for autonomous driving. However, due to the severe sparsity and noise interference in the single sweep LiDAR point cloud, the accurate semantic segmentation is…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Xu Yan , Jiantao Gao , Jie Li , Ruimao Zhang , Zhen Li , Rui Huang , Shuguang Cui

Sensing the medical scenario can ensure the safety during the surgical operations. So, in this regard, a monitor platform which can obtain the accurate location information of the surgery room is desperately needed. Compared to 2D camera…

Computer Vision and Pattern Recognition · Computer Science 2018-09-06 Ke Wang , Han Song , Jiahui Zhang , Xinran Zhang , Hongen Liao

Place recognition is a key module in robotic navigation. The existing line of studies mostly focuses on visual place recognition to recognize previously visited places solely based on their appearance. In this paper, we address structural…

Robotics · Computer Science 2021-09-29 Giseop Kim , Sunwook Choi , Ayoung Kim

The success of deep learning techniques in the computer vision domain has triggered a range of initial investigations into their utility for visual place recognition, all using generic features from networks that were trained for other…

Computer Vision and Pattern Recognition · Computer Science 2017-01-20 Zetao Chen , Adam Jacobson , Niko Sunderhauf , Ben Upcroft , Lingqiao Liu , Chunhua Shen , Ian Reid , Michael Milford

Due to the flexible representation of arbitrary-shaped scene text and simple pipeline, bottom-up segmentation-based methods begin to be mainstream in real-time scene text detection. Despite great progress, these methods show deficiencies in…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Xugong Qin , Pengyuan Lyu , Chengquan Zhang , Yu Zhou , Kun Yao , Peng Zhang , Hailun Lin , Weiping Wang

Learning powerful discriminative features for remote sensing image scene classification is a challenging computer vision problem. In the past, most classification approaches were based on handcrafted features. However, most recent…

Computer Vision and Pattern Recognition · Computer Science 2019-02-22 Jun Li , Daoyu Lin , Yang Wang , Guangluan Xu , Chibiao Ding

In this paper, we propose a general framework for image classification using the attention mechanism and global context, which could incorporate with various network architectures to improve their performance. To investigate the capability…

Computer Vision and Pattern Recognition · Computer Science 2022-06-08 Keke Tang , Guodong Wei , Runnan Chen , Jie Zhu , Zhaoquan Gu , Wenping Wang

Multi-label image classification is a fundamental but challenging task in computer vision. Over the past few decades, solutions exploring relationships between semantic labels have made great progress. However, the underlying…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Jialu Zhang , Qian Zhang , Jianfeng Ren , Yitian Zhao , Jiang Liu

Sketch semantic segmentation is a well-explored and pivotal problem in computer vision involving the assignment of pre-defined part labels to individual strokes. This paper presents ContextSeg - a simple yet highly effective approach to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Jiawei Wang , Changjian Li

Although LiDAR sensors are crucial for autonomous systems due to providing precise depth information, they struggle with capturing fine object details, especially at a distance, due to sparse and non-uniform data. Recent advances introduced…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Tiago Cortinhal , Idriss Gouigah , Eren Erdal Aksoy

Within a perception framework for autonomous mobile and robotic systems, semantic analysis of 3D point clouds typically generated by LiDARs is key to numerous applications, such as object detection and recognition, and scene reconstruction.…

Robotics · Computer Science 2024-10-14 Samir Abou Haidar , Alexandre Chariot , Mehdi Darouich , Cyril Joly , Jean-Emmanuel Deschaud

Learning discriminative feature directly on point clouds is still challenging in the understanding of 3D shapes. Recent methods usually partition point clouds into local region sets, and then extract the local region features with…

Computer Vision and Pattern Recognition · Computer Science 2020-03-24 Xinhai Liu , Zhizhong Han , Fangzhou Hong , Yu-Shen Liu , Matthias Zwicker

Deep learning within the context of point clouds has gained much research interest in recent years mostly due to the promising results that have been achieved on a number of challenging benchmarks, such as 3D shape recognition and scene…

Computer Vision and Pattern Recognition · Computer Science 2018-12-06 Ye Zhu , Sven Ewan Shepstone , Pablo Martínez-Nuevo , Miklas Strøm Kristoffersen , Fabien Moutarde , Zhuang Fu

3D vehicle detection based on point cloud is a challenging task in real-world applications such as autonomous driving. Despite significant progress has been made, we observe two aspects to be further improved. First, the semantic context…

Computer Vision and Pattern Recognition · Computer Science 2020-02-14 Hongwei Yi , Shaoshuai Shi , Mingyu Ding , Jiankai Sun , Kui Xu , Hui Zhou , Zhe Wang , Sheng Li , Guoping Wang

With the rapid advances of autonomous driving, it becomes critical to equip its sensing system with more holistic 3D perception. However, existing works focus on parsing either the objects (e.g. cars and pedestrians) or scenes (e.g. trees…

Computer Vision and Pattern Recognition · Computer Science 2020-12-02 Fangzhou Hong , Hui Zhou , Xinge Zhu , Hongsheng Li , Ziwei Liu

Hyperspectral imaging (HSI) analysis faces computational bottlenecks due to massive data volumes that exceed available memory. While foundation models pre-trained on large remote sensing datasets show promise, their learned representations…

Computer Vision and Pattern Recognition · Computer Science 2026-01-01 Yu-Tang Chang , Pin-Wei Chen , Shih-Fang Chen

We present a simple but yet effective method for learning distinctive 3D local deep descriptors (DIPs) that can be used to register point clouds without requiring an initial alignment. Point cloud patches are extracted, canonicalised with…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Fabio Poiesi , Davide Boscaini

Place recognition is essential for achieving closed-loop or global positioning in autonomous vehicles and mobile robots. Despite recent advancements in place recognition using 2D cameras or 3D LiDAR, it remains to be seen how to use 4D…

Robotics · Computer Science 2025-04-08 Shouyi Lu , Guirong Zhuo , Haitao Wang , Quan Zhou , Huanyu Zhou , Renbo Huang , Minqing Huang , Lianqing Zheng , Qiang Shu

Traditional saliency models usually adopt hand-crafted image features and human-designed mechanisms to calculate local or global contrast. In this paper, we propose a novel computational saliency model, i.e., deep spatial contextual…

Computer Vision and Pattern Recognition · Computer Science 2016-10-07 Nian Liu , Junwei Han