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Point cloud based place recognition is still an open issue due to the difficulty in extracting local features from the raw 3D point cloud and generating the global descriptor, and it's even harder in the large-scale dynamic environments. In…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Zhe Liu , Shunbo Zhou , Chuanzhe Suo , Yingtian Liu , Peng Yin , Hesheng Wang , Yun-Hui Liu

A 3D point cloud is often synthesized from depth measurements collected by sensors at different viewpoints. The acquired measurements are typically both coarse in precision and corrupted by noise. To improve quality, previous works denoise…

Image and Video Processing · Electrical Eng. & Systems 2020-02-12 Xue Zhang , Gene Cheung , Jiahao Pang , Dong Tian

The rapid growth of 3D point cloud data, driven by applications in autonomous driving, robotics, and immersive environments, has led to criticals demand for efficient compression and quality assessment techniques. Unlike traditional 2D…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Yiling Xu , Yujie Zhang , Shuting Xia , Kaifa Yang , He Huang , Ziyu Shan , Wenjie Huang , Qi Yang , Le Yang

3D anomaly detection is critical in industrial quality inspection. While existing methods achieve notable progress, their performance degrades in high-precision 3D anomaly detection due to insufficient global information. To address this,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Yihan Sun , Yuqi Cheng , Yunkang Cao , Yuxin Zhang , Weiming Shen

Recent advances in deep learning for 3D point clouds have shown great promises in scene understanding tasks thanks to the introduction of convolution operators to consume 3D point clouds directly in a neural network. Point cloud data,…

Computer Vision and Pattern Recognition · Computer Science 2020-08-10 Zhiyuan Zhang , Binh-Son Hua , Wei Chen , Yibin Tian , Sai-Kit Yeung

Machine learning models have been shown to be vulnerable to adversarial examples. While most of the existing methods for adversarial attack and defense work on the 2D image domain, a few recent attempts have been made to extend them to 3D…

Computer Vision and Pattern Recognition · Computer Science 2020-12-15 Yuxin Wen , Jiehong Lin , Ke Chen , C. L. Philip Chen , Kui Jia

This paper focuses on a novel approach for false-positive reduction (FPR) of nodule candidates in Computer-aided detection (CADe) systems following the suspicious lesions detection stage. Contrary to typical decisions in medical image…

Image and Video Processing · Electrical Eng. & Systems 2021-06-11 Ivan Drokin , Elena Ericheva

3D perception in point clouds is transforming the perception ability of future intelligent machines. Point cloud algorithms, however, are plagued by irregular memory accesses, leading to massive inefficiencies in the memory sub-system,…

Hardware Architecture · Computer Science 2022-04-25 Yu Feng , Gunnar Hammonds , Yiming Gan , Yuhao Zhu

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

Recovering high quality surfaces from noisy point clouds, known as point cloud denoising, is a fundamental yet challenging problem in geometry processing. Most of the existing methods either directly denoise the noisy input or filter raw…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Zheng Liu , Yaowu Zhao , Sijing Zhan , Yuanyuan Liu , Renjie Chen , Ying He

The paper explores the industrial multimodal Anomaly Detection (AD) task, which exploits point clouds and RGB images to localize anomalies. We introduce a novel light and fast framework that learns to map features from one modality to the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Alex Costanzino , Pierluigi Zama Ramirez , Giuseppe Lisanti , Luigi Di Stefano

Part-level point cloud segmentation has recently attracted significant attention in 3D computer vision. Nevertheless, existing research is constrained by two major challenges: native 3D models lack generalization due to data scarcity, while…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Han Su , Tianyu Huang , Zichen Wan , Xiaohe Wu , Wangmeng Zuo

Point clouds are extensively employed in a variety of real-world applications such as robotics, autonomous driving and augmented reality. Despite the recent success of point cloud neural networks, especially for safety-critical tasks, it is…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Mert Gulsen , Batuhan Cengiz , Yusuf H. Sahin , Gozde Unal

Point clouds are often the default choice for many applications as they exhibit more flexibility and efficiency than volumetric data. Nevertheless, their unorganized nature -- points are stored in an unordered way -- makes them less suited…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Yida Wang , David Joseph Tan , Nassir Navab , Federico Tombari

Point cloud registration is a crucial problem in computer vision and robotics. Existing methods either rely on matching local geometric features, which are sensitive to the pose differences, or leverage global shapes, which leads to…

Computer Vision and Pattern Recognition · Computer Science 2023-03-07 Cheng-Wei Lin , Tung-I Chen , Hsin-Ying Lee , Wen-Chin Chen , Winston H. Hsu

Point cloud analysis (such as 3D segmentation and detection) is a challenging task, because of not only the irregular geometries of many millions of unordered points, but also the great variations caused by depth, viewpoint, occlusion, etc.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Tuo Feng , Wenguan Wang , Xiaohan Wang , Yi Yang , Qinghua Zheng

To alleviate the cost of collecting and annotating large-scale point cloud datasets, we propose an unsupervised learning approach to learn features from unlabeled point cloud "3D object" dataset by using part contrasting and object…

Computer Vision and Pattern Recognition · Computer Science 2019-08-14 Ling Zhang , Zhigang Zhu

Aggregating neighbor features is essential for point cloud classification. In the existing work, each point in the cloud may inevitably be selected as the neighbors of multiple aggregation centers, as all centers will gather neighbor…

Computer Vision and Pattern Recognition · Computer Science 2022-08-19 Tao Lu , Chunxu Liu , Youxin Chen , Gangshan Wu , Limin Wang

Using heterogeneous depth cameras and 3D scanners in 3D face verification causes variations in the resolution of the 3D point clouds. To solve this issue, previous studies use 3D registration techniques. Out of these proposed techniques,…

Computer Vision and Pattern Recognition · Computer Science 2018-11-13 Ahmed ElSayed , Elif Kongar , Ausif Mahmood , Tarek Sobh , Terrance Boult

Point clouds captured by scanning devices are often incomplete due to occlusion. To overcome this limitation, point cloud completion methods have been developed to predict the complete shape of an object based on its partial input. These…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Lintai Wu , Qijian Zhang , Junhui Hou , Yong Xu