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Point clouds provide intrinsic geometric information and surface context for scene understanding. Existing methods for point cloud segmentation require a large amount of fully labeled data. Using advanced depth sensors, collection of large…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Jiacheng Wei , Guosheng Lin , Kim-Hui Yap , Tzu-Yi Hung , Lihua Xie

The recent advancements in point cloud learning have enabled intelligent vehicles and robots to comprehend 3D environments better. However, processing large-scale 3D scenes remains a challenging problem, such that efficient downsampling…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Hongcheng Yang , Dingkang Liang , Dingyuan Zhang , Zhe Liu , Zhikang Zou , Xingyu Jiang , Yingying Zhu

The recent advances in 3D sensing technology have made possible the capture of point clouds in significantly high resolution. However, increased detail usually comes at the expense of high storage, as well as computational costs in terms of…

Computer Vision and Pattern Recognition · Computer Science 2021-10-01 Rolandos Alexandros Potamias , Giorgos Bouritsas , Stefanos Zafeiriou

6D robotic grasping beyond top-down bin-picking scenarios is a challenging task. Previous solutions based on 6D grasp synthesis with robot motion planning usually operate in an open-loop setting, which are sensitive to grasp synthesis…

Robotics · Computer Science 2021-09-15 Lirui Wang , Yu Xiang , Wei Yang , Arsalan Mousavian , Dieter Fox

Point clouds are essential for storage and transmission of 3D content. As they can entail significant volumes of data, point cloud compression is crucial for practical usage. Recently, point cloud geometry compression approaches based on…

Computer Vision and Pattern Recognition · Computer Science 2021-02-26 Maurice Quach , Aladine Chetouani , Giuseppe Valenzise , Frederic Dufaux

Shape completion networks have been used recently in real-world robotic experiments to complete the missing/hidden information in environments where objects are only observed in one or few instances where self-occlusions are bound to occur.…

Methods tackling multi-object tracking need to estimate the number of targets in the sensing area as well as to estimate their continuous state. While the majority of existing methods focus on data association, precise state (3D pose)…

Computer Vision and Pattern Recognition · Computer Science 2019-10-11 Johannes Groß , Aljosa Osep , Bastian Leibe

High-level autonomous operations depend on a robot's ability to construct a sufficiently expressive model of its environment. Traditional three-dimensional (3D) scene representations, such as point clouds and occupancy grids, provide…

Robotics · Computer Science 2025-06-10 Chad R Samuelson , Timothy W McLain , Joshua G Mangelson

This paper investigates an open research challenge of reconstructing high-quality, large 3D open scenes from images. It is observed existing methods have various limitations, such as requiring precise camera poses for input and dense…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Chong Cheng , Gaochao Song , Yiyang Yao , Qinzheng Zhou , Gangjian Zhang , Hao Wang

Given point cloud input, the problem of 6-DoF grasp pose detection is to identify a set of hand poses in SE(3) from which an object can be successfully grasped. This important problem has many practical applications. Here we propose a novel…

Robotics · Computer Science 2022-11-02 Haojie Huang , Dian Wang , Xupeng Zhu , Robin Walters , Robert Platt

Estimating the geometry level of human-scene contact aims to ground specific contact surface points at 3D human geometries, which provides a spatial prior and bridges the interaction between human and scene, supporting applications such as…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Chengfeng Wang , Wei Zhai , Yuhang Yang , Yang Cao , Zhengjun Zha

With the recent availability and affordability of commercial depth sensors and 3D scanners, an increasing number of 3D (i.e., RGBD, point cloud) datasets have been publicized to facilitate research in 3D computer vision. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2022-01-13 Qingyong Hu , Bo Yang , Sheikh Khalid , Wen Xiao , Niki Trigoni , Andrew Markham

Currently, task-oriented grasp detection approaches are mostly based on pixel-level affordance detection and semantic segmentation. These pixel-level approaches heavily rely on the accuracy of a 2D affordance mask, and the generated grasp…

Robotics · Computer Science 2022-10-18 Wenkai Chen , Hongzhuo Liang , Zhaopeng Chen , Fuchun Sun , Jianwei Zhang

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

Gesture recognition is one of the most intuitive ways of interaction and has gathered particular attention for human computer interaction. Radar sensors possess multiple intrinsic properties, such as their ability to work in low…

Signal Processing · Electrical Eng. & Systems 2022-05-20 Souvik Hazra , Hao Feng , Gamze Naz Kiprit , Michael Stephan , Lorenzo Servadei , Robert Wille , Robert Weigel , Avik Santra

Scene graphs have been recently introduced into 3D spatial understanding as a comprehensive representation of the scene. The alignment between 3D scene graphs is the first step of many downstream tasks such as scene graph aided point cloud…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Yaxu Xie , Alain Pagani , Didier Stricker

The semantic segmentation of surgical scenes is a prerequisite for task automation in robot assisted interventions. We propose LapSeg3D, a novel DNN-based approach for the voxel-wise annotation of point clouds representing surgical scenes.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Benjamin Alt , Christian Kunz , Darko Katic , Rayan Younis , Rainer Jäkel , Beat Peter Müller-Stich , Martin Wagner , Franziska Mathis-Ullrich

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

3D Gaussian Splatting (3DGS) is a powerful reconstruction technique, but it needs to be initialized from accurate camera poses and high-fidelity point clouds. Typically, the initialization is taken from Structure-from-Motion (SfM)…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Jizong Peng , Tze Ho Elden Tse , Kai Xu , Wenchao Gao , Angela Yao

Achieving dexterous robotic grasping with multi-fingered hands remains a significant challenge. While existing methods rely on complete 3D scans to predict grasp poses, these approaches face limitations due to the difficulty of acquiring…

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