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Many applications in robotics and human-computer interaction can benefit from understanding 3D motion of points in a dynamic environment, widely noted as scene flow. While most previous methods focus on stereo and RGB-D images as input, few…

Computer Vision and Pattern Recognition · Computer Science 2019-07-23 Xingyu Liu , Charles R. Qi , Leonidas J. Guibas

Three dimensional (3D) object recognition is becoming a key desired capability for many computer vision systems such as autonomous vehicles, service robots and surveillance drones to operate more effectively in unstructured environments.…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Chenxi Xiao , Juan Wachs

Extracting robust and general 3D local features is key to downstream tasks such as point cloud registration and reconstruction. Existing learning-based local descriptors are either sensitive to rotation transformations, or rely on classical…

Computer Vision and Pattern Recognition · Computer Science 2021-04-12 Sheng Ao , Qingyong Hu , Bo Yang , Andrew Markham , Yulan Guo

Technology to recognize the type of component represented by a point cloud is required in the reconstruction process of an as-built model of a process plant based on laser scanning. The reconstruction process of a process plant through…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Hyungki Kim , Duhwan Mun

PointNet has recently emerged as a popular representation for unstructured point cloud data, allowing application of deep learning to tasks such as object detection, segmentation and shape completion. However, recent works in literature…

Computer Vision and Pattern Recognition · Computer Science 2019-11-05 Vinit Sarode , Xueqian Li , Hunter Goforth , Yasuhiro Aoki , Rangaprasad Arun Srivatsan , Simon Lucey , Howie Choset

Fusion of 2D images and 3D point clouds is important because information from dense images can enhance sparse point clouds. However, fusion is challenging because 2D and 3D data live in different spaces. In this work, we propose MVPNet…

Computer Vision and Pattern Recognition · Computer Science 2019-10-01 Maximilian Jaritz , Jiayuan Gu , Hao Su

Three-dimensional (3D) shape recognition has drawn much research attention in the field of computer vision. The advances of deep learning encourage various deep models for 3D feature representation. For point cloud and multi-view data, two…

Computer Vision and Pattern Recognition · Computer Science 2018-12-04 Haoxuan You , Yifan Feng , Xibin Zhao , Changqing Zou , Rongrong Ji , Yue Gao

Point cloud is a principal data structure adopted for 3D geometric information encoding. Unlike other conventional visual data, such as images and videos, these irregular points describe the complex shape features of 3D objects, which makes…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Chaoyi Zhang , Yang Song , Lina Yao , Weidong Cai

In the field of autonomous driving and robotics, point clouds are showing their excellent real-time performance as raw data from most of the mainstream 3D sensors. Therefore, point cloud neural networks have become a popular research…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Hanxiao Tan

In this paper, we propose a similarity-aware fusion network (SAFNet) to adaptively fuse 2D images and 3D point clouds for 3D semantic segmentation. Existing fusion-based methods achieve remarkable performances by integrating information…

Computer Vision and Pattern Recognition · Computer Science 2021-07-20 Linqing Zhao , Jiwen Lu , Jie Zhou

In this paper, we propose PCPNet, a deep-learning based approach for estimating local 3D shape properties in point clouds. In contrast to the majority of prior techniques that concentrate on global or mid-level attributes, e.g., for shape…

Computational Geometry · Computer Science 2018-06-20 Paul Guerrero , Yanir Kleiman , Maks Ovsjanikov , Niloy J. Mitra

Unlike on images, semantic learning on 3D point clouds using a deep network is challenging due to the naturally unordered data structure. Among existing works, PointNet has achieved promising results by directly learning on point sets.…

Computer Vision and Pattern Recognition · Computer Science 2018-04-05 Yiru Shen , Chen Feng , Yaoqing Yang , Dong Tian

The process of segmenting point cloud data into several homogeneous areas with points in the same region having the same attributes is known as 3D segmentation. Segmentation is challenging with point cloud data due to substantial…

Computer Vision and Pattern Recognition · Computer Science 2025-04-24 Siddiqui Muhammad Yasir , Hyunsik Ahn

In this paper, we focus on semantic segmentation method for point clouds of urban scenes. Our fundamental concept revolves around the collaborative utilization of diverse scene representations to benefit from different context information…

Computer Vision and Pattern Recognition · Computer Science 2023-10-02 Weijie Wei , Martin R. Oswald , Fatemeh Karimi Nejadasl , Theo Gevers

This paper proposes an innovative approach to Hierarchical Edge Aware 3D Point Cloud Learning (HEA-Net) that seeks to address the challenges of noise in point cloud data, and improve object recognition and segmentation by focusing on edge…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Lei Li

In this article we describe a new convolutional neural network (CNN) to classify 3D point clouds of urban or indoor scenes. Solutions are given to the problems encountered working on scene point clouds, and a network is described that…

Computer Vision and Pattern Recognition · Computer Science 2018-04-11 Xavier Roynard , Jean-Emmanuel Deschaud , François Goulette

Point clouds provide a compact and efficient representation of 3D shapes. While deep neural networks have achieved impressive results on point cloud learning tasks, they require massive amounts of manually labeled data, which can be costly…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Omid Poursaeed , Tianxing Jiang , Han Qiao , Nayun Xu , Vladimir G. Kim

Few prior works study deep learning on point sets. PointNet by Qi et al. is a pioneer in this direction. However, by design PointNet does not capture local structures induced by the metric space points live in, limiting its ability to…

Computer Vision and Pattern Recognition · Computer Science 2017-06-09 Charles R. Qi , Li Yi , Hao Su , Leonidas J. Guibas

Modern depth sensors such as LiDAR operate by sweeping laser-beams across the scene, resulting in a point cloud with notable 1D curve-like structures. In this work, we introduce a new point cloud processing scheme and backbone, called…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Colton Stearns , Davis Rempe , Jiateng Liu , Alex Fu , Sebastien Mascha , Jeong Joon Park , Despoina Paschalidou , Leonidas J. Guibas

Since the point cloud data is inherently irregular and unstructured, point cloud semantic segmentation has always been a challenging task. The graph-based method attempts to model the irregular point cloud by representing it as a graph;…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Wei Tao , Xiaoyang Qu , Kai Lu , Jiguang Wan , Shenglin He , Jianzong Wang