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Clustering and outlier detection are two important tasks in data mining. Outliers frequently interfere with clustering algorithms to determine the similarity between objects, resulting in unreliable clustering results. Currently, only a few…

Machine Learning · Computer Science 2024-12-10 Qi Li , Shuliang Wang

We present TransLPC, a novel detection model for large point clouds that is based on a transformer architecture. While object detection with transformers has been an active field of research, it has proved difficult to apply such models to…

Computer Vision and Pattern Recognition · Computer Science 2022-10-03 Felicia Ruppel , Florian Faion , Claudius Gläser , Klaus Dietmayer

Transformers have demonstrated impressive results for 3D point cloud semantic segmentation. However, the quadratic complexity of transformer makes computation costs high, limiting the number of points that can be processed simultaneously…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Zhuoyuan Li , Yubo Ai , Jiahao Lu , ChuXin Wang , Jiacheng Deng , Hanzhi Chang , Yanzhe Liang , Wenfei Yang , Shifeng Zhang , Tianzhu Zhang

Panoptic segmentation is the combination of semantic and instance segmentation: assign the points in a 3D point cloud to semantic categories and partition them into distinct object instances. It has many obvious applications for outdoor…

Computer Vision and Pattern Recognition · Computer Science 2023-07-07 Binbin Xiang , Torben Peters , Theodora Kontogianni , Frawa Vetterli , Stefano Puliti , Rasmus Astrup , Konrad Schindler

Outlier feature matches and loop-closures that survived front-end data association can lead to catastrophic failures in the back-end optimization of large-scale point cloud based 3D reconstruction. To alleviate this problem, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2019-05-24 Ziquan Lan , Zi Jian Yew , Gim Hee Lee

Outlier detection is a significant area in data mining. It can be either used to pre-process the data prior to an analysis or post the processing phase (before visualization) depending on the effectiveness of the outlier and its importance.…

Machine Learning · Statistics 2021-06-22 Jacob John

Video anomaly detection (VAD) methods are mostly CNN-based or Transformer-based, achieving impressive results, but the focus on detection accuracy often comes at the expense of inference speed. The emergence of state space models in…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Jiahao Lyu , Minghua Zhao , Jing Hu , Xuewen Huang , Yifei Chen , Shuangli Du

LiDAR is an important method for autonomous driving systems to sense the environment. The point clouds obtained by LiDAR typically exhibit sparse and irregular distribution, thus posing great challenges to the detection of 3D objects,…

Computer Vision and Pattern Recognition · Computer Science 2020-10-28 Tai Wang , Xinge Zhu , Dahua Lin

In recent years, approaches based on radar object detection have made significant progress in autonomous driving systems due to their robustness under adverse weather compared to LiDAR. However, the sparsity of radar point clouds poses…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Xiangyuan Peng , Miao Tang , Huawei Sun , Kay Bierzynski , Lorenzo Servadei , Robert Wille

The combination of the Internet of Things and the Edge Computing gives many opportunities to support innovative applications close to end users. Numerous devices present in both infrastructures can collect data upon which various processing…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-03-02 Kostas Kolomvatsos , Christos Anagnostopoulos

Automated vehicles require an accurate perception of their surroundings for safe and efficient driving. Lidar-based object detection is a widely used method for environment perception, but its performance is significantly affected by…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Raphael van Kempen , Tim Rehbronn , Abin Jose , Johannes Stegmaier , Bastian Lampe , Timo Woopen , Lutz Eckstein

Perception is a key element for enabling intelligent autonomous navigation. Understanding the semantics of the surrounding environment and accurate vehicle pose estimation are essential capabilities for autonomous vehicles, including…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Mohamed Afifi , Mohamed ElHelw

Radiography imaging protocols target on specific anatomical regions, resulting in highly consistent images with recurrent structural patterns across patients. Recent advances in medical anomaly detection have demonstrated the effectiveness…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Rui Pan , Ruiying Lu

Various technologies, including computer vision models, are employed for the automatic monitoring of manual assembly processes in production. These models detect and classify events such as the presence of components in an assembly area or…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Anton Sergeev , Victor Minchenkov , Aleksei Soldatov , Vasiliy Kakurin , Yaroslav Mazikov

The key to out-of-distribution detection is density estimation of the in-distribution data or of its feature representations. This is particularly challenging for dense anomaly detection in domains where the in-distribution data has a…

Computer Vision and Pattern Recognition · Computer Science 2023-09-15 Silvio Galesso , Max Argus , Thomas Brox

Recent advancements in medical imaging have resulted in more complex and diverse images, with challenges such as high anatomical variability, blurred tissue boundaries, low organ contrast, and noise. Traditional segmentation methods…

Image and Video Processing · Electrical Eng. & Systems 2024-11-01 Yufeng Jiang , Zongxi Li , Xiangyan Chen , Haoran Xie , Jing Cai

One-shot LiDAR localization refers to the ability to estimate the robot pose from one single point cloud, which yields significant advantages in initialization and relocalization processes. In the point cloud domain, the topic has been…

Robotics · Computer Science 2023-09-19 Pengyu Yin , Haozhi Cao , Thien-Minh Nguyen , Shenghai Yuan , Shuyang Zhang , Kangcheng Liu , Lihua Xie

A robust and efficient anomaly detection technique is proposed, capable of dealing with crowded scenes where traditional tracking based approaches tend to fail. Initial foreground segmentation of the input frames confines the analysis to…

Computer Vision and Pattern Recognition · Computer Science 2013-04-04 Vikas Reddy , Conrad Sanderson , Brian C. Lovell

Anomaly and outlier detection is a long-standing problem in machine learning. In some cases, anomaly detection is easy, such as when data are drawn from well-characterized distributions such as the Gaussian. However, when data occupy…

Machine Learning · Computer Science 2021-11-24 Najib Ishaq , Thomas J. Howard , Noah M. Daniels

Deep convolutional models often produce inadequate predictions for inputs foreign to the training distribution. Consequently, the problem of detecting outlier images has recently been receiving a lot of attention. Unlike most previous work,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Petra Bevandić , Ivan Krešo , Marin Oršić , Siniša Šegvić