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LiDAR-based 3D detection has made great progress in recent years. However, the performance of 3D detectors is considerably limited when deployed in unseen environments, owing to the severe domain gap problem. Existing domain adaptive 3D…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Ziyu Li , Jingming Guo , Tongtong Cao , Liu Bingbing , Wankou Yang

Graph anomaly detection (GAD) is a critical task in graph machine learning, with the primary objective of identifying anomalous nodes that deviate significantly from the majority. This task is widely applied in various real-world scenarios,…

Machine Learning · Computer Science 2025-07-03 Xiang Li , Jianpeng Qi , Zhongying Zhao , Guanjie Zheng , Lei Cao , Junyu Dong , Yanwei Yu

Despite the rapid advancement of navigation algorithms, mobile robots often produce anomalous behaviors that can lead to navigation failures. The ability to detect such anomalous behaviors is a key component in modern robots to achieve…

Industrial visual inspection aims at detecting surface defects in products during the manufacturing process. Although existing anomaly detection models have shown great performance on many public benchmarks, their limited adjustability and…

Computer Vision and Pattern Recognition · Computer Science 2023-05-16 Tongkun Liu , Bing Li , Xiao Du , Bingke Jiang , Xiao Jin , Liuyi Jin , Zhuo Zhao

This study explores the recently proposed and challenging multi-view Anomaly Detection (AD) task. Single-view tasks will encounter blind spots from other perspectives, resulting in inaccuracies in sample-level prediction. Therefore, we…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Haoyang He , Jiangning Zhang , Guanzhong Tian , Chengjie Wang , Lei Xie

High-precision point cloud anomaly detection is the gold standard for identifying the defects of advancing machining and precision manufacturing. Despite some methodological advances in this area, the scarcity of datasets and the lack of a…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Jiaqi Liu , Guoyang Xie , Ruitao Chen , Xinpeng Li , Jinbao Wang , Yong Liu , Chengjie Wang , Feng Zheng

Existing efforts to boost multimodal fusion of 3D anomaly detection (3D-AD) primarily concentrate on devising more effective multimodal fusion strategies. However, little attention was devoted to analyzing the role of multimodal fusion…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Kaifang Long , Guoyang Xie , Lianbo Ma , Jiaqi Liu , Zhichao Lu

Although recent methods have tried to introduce large multimodal models (LMMs) into industrial anomaly detection (IAD), their generalization in the IAD field is far inferior to that for general purposes. We summarize the main reasons for…

Computer Vision and Pattern Recognition · Computer Science 2025-08-13 Yuanze Li , Shihao Yuan , Haolin Wang , Qizhang Li , Ming Liu , Chen Xu , Guangming Shi , Wangmeng Zuo

Anomaly detection in complex industrial processes plays a pivotal role in ensuring efficient, stable, and secure operation. Existing anomaly detection methods primarily focus on analyzing dominant anomalies using the process variables (such…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Gaochang Wu , Yapeng Zhang , Lan Deng , Jingxin Zhang , Tianyou Chai

In line with the development of Industry 4.0, surface defect detection/anomaly detection becomes a topical subject in the industry field. Improving efficiency as well as saving labor costs has steadily become a matter of great concern in…

Computer Vision and Pattern Recognition · Computer Science 2023-06-14 Yajie Cui , Zhaoxiang Liu , Shiguo Lian

Although self-supervised 3D anomaly detection assumes that acquiring high-precision point clouds is computationally expensive, in real manufacturing scenarios it is often feasible to collect a limited number of anomalous samples. Therefore,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Hanzhe Liang , Luocheng Zhang , Junyang Xia , HanLiang Zhou , Bingyang Guo , Yingxi Xie , Can Gao , Ruiyun Yu , Jinbao Wang , Pan Li

Traditional deep learning models often lack annotated data, especially in cross-domain applications such as anomaly detection, which is critical for early disease diagnosis in medicine and defect detection in industry. To address this…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Wahyu Rahmaniar , Kenji Suzuki

Visual anomaly detection aims to identify anomalous regions in images through unsupervised learning paradigms, with increasing application demand and value in fields such as industrial inspection and medical lesion detection. Despite…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Jiangning Zhang , Haoyang He , Zhenye Gan , Qingdong He , Yuxuan Cai , Zhucun Xue , Yabiao Wang , Chengjie Wang , Lei Xie , Yong Liu

Integrating LiDAR and camera inputs into a unified Bird's-Eye-View (BEV) representation is crucial for enhancing 3D perception capabilities of autonomous vehicles. However, existing methods suffer from spatial misalignment between LiDAR and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Xiang Li , Zhangchi Hu , Xiao Xu , Bin Kong

Surface anomaly detection is pivotal for ensuring product quality in industrial manufacturing. While 2D image-based methods have achieved remarkable success, 3D point cloud-based detection remains underexplored despite its richer geometric…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Xuanming Cao , Chengyu Tao , Yifeng Cheng , Juan Du

Reconstruction-based anomaly detection models achieve their purpose by suppressing the generalization ability for anomaly. However, diverse normal patterns are consequently not well reconstructed as well. Although some efforts have been…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Wenrui Liu , Hong Chang , Bingpeng Ma , Shiguang Shan , Xilin Chen

Cross-category anomaly detection for 3D point clouds aims to determine whether an unseen object belongs to a target category using only a few normal examples. Most existing methods rely on category-specific training, which limits their…

Computer Vision and Pattern Recognition · Computer Science 2026-02-12 Zi Wang , Katsuya Hotta , Koichiro Kamide , Yawen Zou , Jianjian Qin , Chao Zhang , Jun Yu

Existing 3D anomaly detection methods are built on a rigid prior: normal geometry is pose-invariant and can be canonicalized through registration or alignment. This prior does not hold for articulated objects with hinge or sliding joints,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 Jinye Gan , Bozhong Zheng , Xiaohao Xu , Junye Ren , Zixuan Zhang , Na Ni , Yingna Wu

We propose a Self-supervised Anomaly Detection technique, called SeMAnD, to detect geometric anomalies in Multimodal geospatial datasets. Geospatial data comprises of acquired and derived heterogeneous data modalities that we transform to…

Artificial Intelligence · Computer Science 2023-09-28 Daria Reshetova , Swetava Ganguli , C. V. Krishnakumar Iyer , Vipul Pandey

Multi-camera 3D object detection for autonomous driving is a challenging problem that has garnered notable attention from both academia and industry. An obstacle encountered in vision-based techniques involves the precise extraction of…

Computer Vision and Pattern Recognition · Computer Science 2023-04-10 Linyan Huang , Huijie Wang , Jia Zeng , Shengchuan Zhang , Liujuan Cao , Junchi Yan , Hongyang Li