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In this paper, we propose a graph neural network to detect objects from a LiDAR point cloud. Towards this end, we encode the point cloud efficiently in a fixed radius near-neighbors graph. We design a graph neural network, named Point-GNN,…

Computer Vision and Pattern Recognition · Computer Science 2020-03-04 Weijing Shi , Ragunathan , Rajkumar

Effective point cloud processing is crucial to LiDARbased autonomous driving systems. The capability to understand features at multiple scales is required for object detection of intelligent vehicles, where road users may appear in…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Weihao Lu , Dezong Zhao , Cristiano Premebida , Li Zhang , Wenjing Zhao , Daxin Tian

In this work, we address the problem of 3D object detection from point cloud data in real time. For autonomous vehicles to work, it is very important for the perception component to detect the real world objects with both high accuracy and…

Computer Vision and Pattern Recognition · Computer Science 2021-06-23 Abhinav Sagar

In recent years 3D object detection from LiDAR point clouds has made great progress thanks to the development of deep learning technologies. Although voxel or point based methods are popular in 3D object detection, they usually involve…

Computer Vision and Pattern Recognition · Computer Science 2022-07-18 Jiaqi Gu , Zhiyu Xiang , Pan Zhao , Tingming Bai , Lingxuan Wang , Xijun Zhao , Zhiyuan Zhang

We present Deformable PV-RCNN, a high-performing point-cloud based 3D object detector. Currently, the proposal refinement methods used by the state-of-the-art two-stage detectors cannot adequately accommodate differing object scales,…

Computer Vision and Pattern Recognition · Computer Science 2020-08-21 Prarthana Bhattacharyya , Krzysztof Czarnecki

In order to deal with the sparse and unstructured raw point clouds, LiDAR based 3D object detection research mostly focuses on designing dedicated local point aggregators for fine-grained geometrical modeling. In this paper, we revisit the…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Jinyu Li , Chenxu Luo , Xiaodong Yang

Accurate 3D object detection in LiDAR based point clouds suffers from the challenges of data sparsity and irregularities. Existing methods strive to organize the points regularly, e.g. voxelize, pass them through a designed 2D/3D neural…

Computer Vision and Pattern Recognition · Computer Science 2020-10-14 Qi Chen , Lin Sun , Zhixin Wang , Kui Jia , Alan Yuille

This paper proposes a computationally efficient approach to detecting objects natively in 3D point clouds using convolutional neural networks (CNNs). In particular, this is achieved by leveraging a feature-centric voting scheme to implement…

Robotics · Computer Science 2017-03-07 Martin Engelcke , Dushyant Rao , Dominic Zeng Wang , Chi Hay Tong , Ingmar Posner

3D object detection plays an important role in a large number of real-world applications. It requires us to estimate the localizations and the orientations of 3D objects in real scenes. In this paper, we present a new network architecture…

Computer Vision and Pattern Recognition · Computer Science 2019-09-25 Xin Zhao , Zhe Liu , Ruolan Hu , Kaiqi Huang

In recent years, much progress has been made in LiDAR-based 3D object detection mainly due to advances in detector architecture designs and availability of large-scale LiDAR datasets. Existing 3D object detectors tend to perform well on the…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Eduardo R. Corral-Soto , Alaap Grandhi , Yannis Y. He , Mrigank Rochan , Bingbing Liu

Recent camera-based 3D object detection is limited by the precision of transforming from image to 3D feature spaces, as well as the accuracy of object localization within the 3D space. This paper aims to address such a fundamental problem…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Chaoqun Wang , Yiran Qin , Zijian Kang , Ningning Ma , Ruimao Zhang

Image-only and pseudo-LiDAR representations are commonly used for monocular 3D object detection. However, methods based on them have shortcomings of either not well capturing the spatial relationships in neighbored image pixels or being…

Computer Vision and Pattern Recognition · Computer Science 2021-04-14 Liang Peng , Fei Liu , Senbo Yan , Xiaofei He , Deng Cai

The task of detecting 3D objects is important to various robotic applications. The existing deep learning-based detection techniques have achieved impressive performance. However, these techniques are limited to run with a graphics…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Xuesong Li , Jose Guivant , Subhan Khan

In object detection, the intersection over union (IoU) threshold is frequently used to define positives/negatives. The threshold used to train a detector defines its \textit{quality}. While the commonly used threshold of 0.5 leads to noisy…

Computer Vision and Pattern Recognition · Computer Science 2019-06-25 Zhaowei Cai , Nuno Vasconcelos

The field of 3D object detection from point clouds is rapidly advancing in computer vision, aiming to accurately and efficiently detect and localize objects in three-dimensional space. Current 3D detectors commonly fall short in terms of…

Computer Vision and Pattern Recognition · Computer Science 2024-06-13 Hualian Sheng , Sijia Cai , Na Zhao , Bing Deng , Qiao Liang , Min-Jian Zhao , Jieping Ye

3D object detection is one of the most important tasks in 3D vision perceptual system of autonomous vehicles. In this paper, we propose a novel two stage 3D object detection method aimed at get the optimal solution of object location in 3D…

Computer Vision and Pattern Recognition · Computer Science 2019-09-05 Jiaojiao Fang , Lingtao Zhou , Guizhong Liu

Currently, there have been many kinds of voxel-based 3D single stage detectors, while point-based single stage methods are still underexplored. In this paper, we first present a lightweight and effective point-based 3D single stage object…

Computer Vision and Pattern Recognition · Computer Science 2020-02-25 Zetong Yang , Yanan Sun , Shu Liu , Jiaya Jia

Most scanning LiDAR sensors generate a sequence of point clouds in real-time. While conventional 3D object detectors use a set of unordered LiDAR points acquired over a fixed time interval, recent studies have revealed that substantial…

Computer Vision and Pattern Recognition · Computer Science 2022-12-22 Junho Koh , Junhyung Lee , Youngwoo Lee , Jaekyum Kim , Jun Won Choi

LiDAR-based 3D object detection pushes forward an immense influence on autonomous vehicles. Due to the limitation of the intrinsic properties of LiDAR, fewer points are collected at the objects farther away from the sensor. This imbalanced…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Ziyu Li , Yuncong Yao , Zhibin Quan , Wankou Yang , Jin Xie

In this study, we present an analysis of model-based ensemble learning for 3D point-cloud object classification and detection. An ensemble of multiple model instances is known to outperform a single model instance, but there is little study…

Computer Vision and Pattern Recognition · Computer Science 2019-05-24 Daniel Koguciuk , Łukasz Chechliński , Tarek El-Gaaly