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Industrial quality inspection plays a critical role in modern manufacturing by identifying defective products during production. While single-modality approaches using either 3D point clouds or 2D RGB images suffer from information…

图像与视频处理 · 电气工程与系统科学 2025-07-30 Chengyu Tao , Xuanming Cao , Juan Du

Most advanced unsupervised anomaly detection (UAD) methods rely on modeling feature representations of frozen encoder networks pre-trained on large-scale datasets, e.g. ImageNet. However, the features extracted from the encoders that are…

计算机视觉与模式识别 · 计算机科学 2023-10-25 Jia Guo , Shuai Lu , Lize Jia , Weihang Zhang , Huiqi Li

Multimodal industrial anomaly detection benefits from integrating RGB appearance with 3D surface geometry, yet existing \emph{unsupervised} approaches commonly rely on memory banks, teacher-student architectures, or fragile fusion schemes,…

计算机视觉与模式识别 · 计算机科学 2026-03-05 Radia Daci , Vito Renò , Cosimo Patruno , Angelo Cardellicchio , Abdelmalik Taleb-Ahmed , Marco Leo , Cosimo Distante

Unsupervised graph anomaly detection aims at identifying rare patterns that deviate from the majority in a graph without the aid of labels, which is important for a variety of real-world applications. Recent advances have utilized Graph…

机器学习 · 计算机科学 2025-05-27 Yuanchen Bei , Sheng Zhou , Jinke Shi , Yao Ma , Haishuai Wang , Jiajun Bu

3D detection is a critical task that enables machines to identify and locate objects in three-dimensional space. It has a broad range of applications in several fields, including autonomous driving, robotics and augmented reality. Monocular…

计算机视觉与模式识别 · 计算机科学 2024-04-11 Aakash Kumar , Chen Chen , Ajmal Mian , Neils Lobo , Mubarak Shah

Estimating the complete 3D point cloud from an incomplete one is a key problem in many vision and robotics applications. Mainstream methods (e.g., PCN and TopNet) use Multi-layer Perceptrons (MLPs) to directly process point clouds, which…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Haozhe Xie , Hongxun Yao , Shangchen Zhou , Jiageng Mao , Shengping Zhang , Wenxiu Sun

Airborne light detection and ranging (LiDAR) plays an increasingly significant role in urban planning, topographic mapping, environmental monitoring, power line detection and other fields thanks to its capability to quickly acquire…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Congcong Wen , Xiang Li , Xiaojing Yao , Ling Peng , Tianhe Chi

Detecting anomalies in images is an important task, especially in real-time computer vision applications. In this work, we focus on computational efficiency and propose a lightweight feature extractor that processes an image in less than a…

计算机视觉与模式识别 · 计算机科学 2024-02-09 Kilian Batzner , Lars Heckler , Rebecca König

Recent progress on 2D object detection has featured Cascade RCNN, which capitalizes on a sequence of cascade detectors to progressively improve proposal quality, towards high-quality object detection. However, there has not been evidence in…

计算机视觉与模式识别 · 计算机科学 2022-11-16 Qi Cai , Yingwei Pan , Ting Yao , Tao Mei

Anomaly detection is a task that recognizes whether an input sample is included in the distribution of a target normal class or an anomaly class. Conventional generative adversarial network (GAN)-based methods utilize an entire image…

计算机视觉与模式识别 · 计算机科学 2021-04-01 Jou Won Song , Kyeongbo Kong , Ye In Park , Suk-Ju Kang

3D object classification has attracted appealing attentions in academic researches and industrial applications. However, most existing methods need to access the training data of past 3D object classes when facing the common real-world…

计算机视觉与模式识别 · 计算机科学 2020-12-17 Jiahua Dong , Yang Cong , Gan Sun , Bingtao Ma , Lichen Wang

Extending the translation equivariance property of convolutional neural networks to larger symmetry groups has been shown to reduce sample complexity and enable more discriminative feature learning. Further, exploiting additional symmetries…

计算机视觉与模式识别 · 计算机科学 2025-02-12 Lisa Weijler , Pedro Hermosilla

Anomaly generation is an effective way to mitigate data scarcity for anomaly detection task. Most existing works shine at industrial anomaly generation with multiple specialists or large generative models, rarely generalizing to anomalies…

计算机视觉与模式识别 · 计算机科学 2025-04-08 Ying Zhao

Although unsupervised feature learning has demonstrated its advantages to reducing the workload of data labeling and network design in many fields, existing unsupervised 3D learning methods still cannot offer a generic network for various…

计算机视觉与模式识别 · 计算机科学 2021-03-15 Peng-Shuai Wang , Yu-Qi Yang , Qian-Fang Zou , Zhirong Wu , Yang Liu , Xin Tong

Industrial anomaly detection (IAD) plays a crucial role in the maintenance and quality control of manufacturing processes. In this paper, we propose a novel approach, Vision-Language Anomaly Detection via Contrastive Cross-Modal Training…

计算机视觉与模式识别 · 计算机科学 2024-12-03 Kun Qian , Tianyu Sun , Wenhong Wang

Existing industrial anomaly detection methods primarily concentrate on unsupervised learning with pristine RGB images. Yet, both RGB and 3D data are crucial for anomaly detection, and the datasets are seldom completely clean in practical…

计算机视觉与模式识别 · 计算机科学 2024-06-05 Chengjie Wang , Haokun Zhu , Jinlong Peng , Yue Wang , Ran Yi , Yunsheng Wu , Lizhuang Ma , Jiangning Zhang

Features that are equivariant to a larger group of symmetries have been shown to be more discriminative and powerful in recent studies. However, higher-order equivariant features often come with an exponentially-growing computational cost.…

计算机视觉与模式识别 · 计算机科学 2021-04-05 Haiwei Chen , Shichen Liu , Weikai Chen , Hao Li

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…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Haoyang He , Jiangning Zhang , Guanzhong Tian , Chengjie Wang , Lei Xie

We propose a generative adversarial network for point cloud upsampling, which can not only make the upsampled points evenly distributed on the underlying surface but also efficiently generate clean high frequency regions. The generator of…

计算机视觉与模式识别 · 计算机科学 2022-12-14 Hao Liu , Hui Yuan , Junhui Hou , Raouf Hamzaoui , Wei Gao

Graph anomaly detection (GAD) aims to identify anomalous graphs that significantly deviate from other ones, which has raised growing attention due to the broad existence and complexity of graph-structured data in many real-world scenarios.…

机器学习 · 计算机科学 2024-02-21 Jinyu Cai , Yunhe Zhang , Zhoumin Lu , Wenzhong Guo , See-kiong Ng