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Generation of 3D data by deep neural network has been attracting increasing attention in the research community. The majority of extant works resort to regular representations such as volumetric grids or collection of images; however, these…

Computer Vision and Pattern Recognition · Computer Science 2016-12-08 Haoqiang Fan , Hao Su , Leonidas Guibas

Deep generative models are proven to be a useful tool for automatic design synthesis and design space exploration. When applied in engineering design, existing generative models face three challenges: 1) generated designs lack diversity and…

Machine Learning · Computer Science 2021-08-17 Wei Chen , Faez Ahmed

One of the main challenges in LiDAR-based 3D object detection is that the sensors often fail to capture the complete spatial information about the objects due to long distance and occlusion. Two-stage detectors with point cloud completion…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Inyong Koo , Inyoung Lee , Se-Ho Kim , Hee-Seon Kim , Woo-jin Jeon , Changick Kim

In this paper we explore the recent topic of point cloud completion, guided by an auxiliary image. We show how it is possible to effectively combine the information from the two modalities in a localized latent space, thus avoiding the need…

Computer Vision and Pattern Recognition · Computer Science 2022-09-21 Emanuele Aiello , Diego Valsesia , Enrico Magli

Missing data imputation poses a paramount challenge when dealing with graph data. Prior works typically are based on feature propagation or graph autoencoders to address this issue. However, these methods usually encounter the…

Machine Learning · Computer Science 2024-04-29 Xindi Zheng , Yuwei Wu , Yu Pan , Wanyu Lin , Lei Ma , Jianjun Zhao

In High Energy Physics, detailed and time-consuming simulations are used for particle interactions with detectors. To bypass these simulations with a generative model, the generation of large point clouds in a short time is required, while…

High Energy Physics - Experiment · Physics 2023-11-22 Moritz Alfons Wilhelm Scham , Dirk Krücker , Benno Käch , Kerstin Borras

In this paper, we explore a novel framework, EGIInet (Explicitly Guided Information Interaction Network), a model for View-guided Point cloud Completion (ViPC) task, which aims to restore a complete point cloud from a partial one with a…

Computer Vision and Pattern Recognition · Computer Science 2024-07-24 Hang Xu , Chen Long , Wenxiao Zhang , Yuan Liu , Zhen Cao , Zhen Dong , Bisheng Yang

Autoregressive point cloud generation has long lagged behind diffusion-based approaches in quality. The performance gap stems from the fact that autoregressive models impose an artificial ordering on inherently unordered point sets, forcing…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Ziqiao Meng , Qichao Wang , Zhiyang Dou , Zixing Song , Zhipeng Zhou , Irwin King , Peilin Zhao

Autoregressive point cloud generation has long lagged behind diffusion-based approaches in quality. The performance gap stems from the fact that autoregressive models impose an artificial ordering on inherently unordered point sets, forcing…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Ziqiao Meng , Qichao Wang , Zhiyang Dou , Zixing Song , Zhipeng Zhou , Irwin King , Peilin Zhao

As details are missing in most representations of structures, the lack of controllability to more information is one of the major weaknesses in structure-based controllable point cloud generation. It is observable that definitions of…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Ximing Yang , Zhibo Zhang , Zhengfu He , Cheng Jin

Image inpainting techniques have shown promising improvement with the assistance of generative adversarial networks (GANs) recently. However, most of them often suffered from completed results with unreasonable structure or blurriness. To…

Computer Vision and Pattern Recognition · Computer Science 2020-10-06 Zheng Hui , Jie Li , Xiumei Wang , Xinbo Gao

Unsupervised point cloud segmentation is critical for embodied artificial intelligence and autonomous driving, as it mitigates the prohibitive cost of dense point-level annotations required by fully supervised methods. While integrating 2D…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Yixiao Song , Qingyong Li , Wen Wang , Zhicheng Yan

Point clouds are crucial for capturing three-dimensional data but often suffer from incompleteness due to limitations such as resolution and occlusion. Traditional methods typically rely on point-based approaches within discriminative…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Guoqing Zhang , Jian Liu

Point cloud completion aims to reconstruct the complete 3D shape from incomplete point clouds, and it is crucial for tasks such as 3D object detection and segmentation. Despite the continuous advances in point cloud analysis techniques,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Yi Zhong , Weize Quan , Dong-ming Yan , Jie Jiang , Yingmei Wei

Self-attention modules have demonstrated remarkable capabilities in capturing long-range relationships and improving the performance of point cloud tasks. However, point cloud objects are typically characterized by complex, disordered, and…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Xian Wei , Muyu Wang , Shing-Ho Jonathan Lin , Zhengyu Li , Jian Yang , Arafat Al-Jawari , Xuan Tang

Image completion has achieved significant progress due to advances in generative adversarial networks (GANs). Albeit natural-looking, the synthesized contents still lack details, especially for scenes with complex structures or images with…

Computer Vision and Pattern Recognition · Computer Science 2017-11-28 Pengpeng Liu , Xiaojuan Qi , Pinjia He , Yikang Li , Michael R. Lyu , Irwin King

Following the tremendous success of transformer in natural language processing and image understanding tasks, in this paper, we present a novel point cloud representation learning architecture, named Dual Transformer Network (DTNet), which…

Computer Vision and Pattern Recognition · Computer Science 2021-04-28 Xian-Feng Han , Yi-Fei Jin , Hui-Xian Cheng , Guo-Qiang Xiao

Data plays a crucial role in training learning-based methods for 3D point cloud registration. However, the real-world dataset is expensive to build, while rendering-based synthetic data suffers from domain gaps. In this work, we present…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Suyi Chen , Hao Xu , Haipeng Li , Kunming Luo , Guanghui Liu , Chi-Wing Fu , Ping Tan , Shuaicheng Liu

Recent years have witnessed the emergence of 3D medical imaging techniques with the development of 3D sensors and technology. Due to the presence of noise in image acquisition, registration researchers focused on an alternative way to…

Machine Learning · Computer Science 2019-11-06 Liu Yang , Rudrasis Chakraborty

Generative models have gained significant attention in novel view synthesis (NVS) by alleviating the reliance on dense multi-view captures. However, existing methods typically fall into a conventional paradigm, where generative models first…

Computer Vision and Pattern Recognition · Computer Science 2025-06-13 Weiliang Chen , Jiayi Bi , Yuanhui Huang , Wenzhao Zheng , Yueqi Duan