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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…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Ximing Yang , Zhibo Zhang , Zhengfu He , Cheng Jin

Volumetric image segmentation with convolutional neural networks (CNNs) encounters several challenges, which are specific to medical images. Among these challenges are large volumes of interest, high class imbalances, and difficulties in…

计算机视觉与模式识别 · 计算机科学 2019-11-12 Fabian Balsiger , Yannick Soom , Olivier Scheidegger , Mauricio Reyes

Semantic Communication (SC) is an emerging technology aiming to surpass the Shannon limit. Traditional SC strategies often minimize signal distortion between the original and reconstructed data, neglecting perceptual quality, especially in…

机器学习 · 计算机科学 2024-08-12 Kexin Zhang , Lixin Li , Wensheng Lin , Yuna Yan , Rui Li , Wenchi Cheng , Zhu Han

Semantic scene completion (SSC) aims to predict complete 3D voxel occupancy and semantics from a single-view RGB-D image, and recent SSC methods commonly adopt multi-modal inputs. However, our investigation reveals two limitations:…

计算机视觉与模式识别 · 计算机科学 2024-03-15 Fengyun Wang , Qianru Sun , Dong Zhang , Jinhui Tang

Point cloud compression (PCC) is a key enabler for various 3-D applications, owing to the universality of the point cloud format. Ideally, 3D point clouds endeavor to depict object/scene surfaces that are continuous. Practically, as a set…

图像与视频处理 · 电气工程与系统科学 2022-09-12 Jiahao Pang , Muhammad Asad Lodhi , Dong Tian

Current semantic segmentation approaches for point cloud scenes heavily rely on manual labeling, while research on unsupervised semantic segmentation methods specifically for raw point clouds is still in its early stages. Unsupervised point…

计算机视觉与模式识别 · 计算机科学 2026-03-09 Lixin Zhan , Jie Jiang , Tianjian Zhou , Yukun Du , Yan Zheng , Xuehu Duan

Despite the remarkable success of deep learning, an optimal convolution operation on point clouds remains elusive owing to their irregular data structure. Existing methods mainly focus on designing an effective continuous kernel function…

计算机视觉与模式识别 · 计算机科学 2023-07-18 Sungmin Woo , Dogyoon Lee , Sangwon Hwang , Woojin Kim , Sangyoun Lee

In this paper, we proposed a novel Style-based Point Generator with Adversarial Rendering (SpareNet) for point cloud completion. Firstly, we present the channel-attentive EdgeConv to fully exploit the local structures as well as the global…

计算机视觉与模式识别 · 计算机科学 2021-05-13 Chulin Xie , Chuxin Wang , Bo Zhang , Hao Yang , Dong Chen , Fang Wen

3D model generation from single 2D RGB images is a challenging and actively researched computer vision task. Various techniques using conventional network architectures have been proposed for the same. However, the body of research work is…

计算机视觉与模式识别 · 计算机科学 2021-06-30 Abdul Mueed Hafiz , Rouf Ul Alam Bhat , Shabir Ahmad Parah , M. Hassaballah

Although the lightweight Vision Transformer has significantly advanced image super-resolution (SR), it faces the inherent challenge of a limited receptive field due to the window-based self-attention modeling. The quadratic computational…

计算机视觉与模式识别 · 计算机科学 2025-07-08 Wenyang Liu , Chen Cai , Jianjun Gao , Kejun Wu , Yi Wang , Kim-Hui Yap , Lap-Pui Chau

In recent years, the challenge of 3D shape analysis within point cloud data has gathered significant attention in computer vision. Addressing the complexities of effective 3D information representation and meaningful feature extraction for…

计算机视觉与模式识别 · 计算机科学 2024-12-05 Md Meraz , Md Afzal Ansari , Mohammed Javed , Pavan Chakraborty

Point cloud completion is a vital task focused on reconstructing complete point clouds and addressing the incompleteness caused by occlusion and limited sensor resolution. Traditional methods relying on fixed local region partitioning, such…

图形学 · 计算机科学 2025-09-30 Zhenyu Shu , Jian Yao , Shiqing Xin

Semantic scene completion (SSC) requires an accurate understanding of the geometric and semantic relationships between the objects in the 3D scene for reasoning the occluded objects. The popular SSC methods voxelize the 3D objects, allowing…

计算机视觉与模式识别 · 计算机科学 2023-07-18 Haotian Dong , Enhui Ma , Lubo Wang , Miaohui Wang , Wuyuan Xie , Qing Guo , Ping Li , Lingyu Liang , Kairui Yang , Di Lin

Semantic parsing of large-scale 3D point clouds is an important research topic in computer vision and remote sensing fields. Most existing approaches utilize hand-crafted features for each modality independently and combine them in a…

计算机视觉与模式识别 · 计算机科学 2017-07-24 Fangyu Liu , Shuaipeng Li , Liqiang Zhang , Chenghu Zhou , Rongtian Ye , Yuebin Wang , Jiwen Lu

Although semantic communication (SC) has shown its potential in efficiently transmitting multimodal data such as texts, speeches and images, SC for videos has focused primarily on pixel-level reconstruction. However, these SC systems may be…

计算机视觉与模式识别 · 计算机科学 2025-02-12 Jiangyuan Guo , Wei Chen , Yuxuan Sun , Jialong Xu , Bo Ai

Point cloud completion aims to predict a complete shape in high accuracy from its partial observation. However, previous methods usually suffered from discrete nature of point cloud and unstructured prediction of points in local regions,…

计算机视觉与模式识别 · 计算机科学 2021-10-28 Peng Xiang , Xin Wen , Yu-Shen Liu , Yan-Pei Cao , Pengfei Wan , Wen Zheng , Zhizhong Han

The unpaired point cloud completion task aims to complete a partial point cloud by using models trained with no ground truth. Existing unpaired point cloud completion methods are class-aware, i.e., a separate model is needed for each object…

计算机视觉与模式识别 · 计算机科学 2025-04-21 Yixuan Yang , Jinyu Yang , Zixiang Zhao , Victor Sanchez , Feng Zheng

Image transmission for vehicle-to-vehicle collaborative perception in autonomous driving faces challenges including limited on-board terminal resources, time-varying wireless channel fading, and poor robustness under low signal-to-noise…

系统与控制 · 电气工程与系统科学 2026-04-23 Ruixing Ren , Minjie Wei , Junhui Zhao

Cloud-edge collaboration enhances machine perception by combining the strengths of edge and cloud computing. Edge devices capture raw data (e.g., 3D point clouds) and extract salient features, which are sent to the cloud for deeper analysis…

图像与视频处理 · 电气工程与系统科学 2026-03-05 Chongzhen Tian , Hui Yuan , Pan Zhao , Chang Sun , Raouf Hamzaoui , Sam Kwong

Self-supervised representation learning (SSRL) has gained increasing attention in point cloud understanding, in addressing the challenges posed by 3D data scarcity and high annotation costs. This paper presents PCExpert, a novel SSRL…

计算机视觉与模式识别 · 计算机科学 2024-04-24 Jiachen Kang , Wenjing Jia , Xiangjian He , Kin Man Lam