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This paper proposes a novel point-cloud-based place recognition system that adopts a deep learning approach for feature extraction. By using a convolutional neural network pre-trained on color images to extract features from a range image…

Computer Vision and Pattern Recognition · Computer Science 2018-10-24 Ting Sun , Ming Liu , Haoyang Ye , Dit-Yan Yeung

We present a deep learning method that propagates point-wise feature representations across shapes within a collection for the purpose of 3D shape segmentation. We propose a cross-shape attention mechanism to enable interactions between a…

Computer Vision and Pattern Recognition · Computer Science 2023-07-06 Marios Loizou , Siddhant Garg , Dmitry Petrov , Melinos Averkiou , Evangelos Kalogerakis

Point cloud has drawn more and more research attention as well as real-world applications. However, many of these applications (e.g. autonomous driving and robotic manipulation) are actually based on sequential point clouds (i.e. four…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Haiyan Wang , Yingli Tian

In this paper, we present new feature encoding methods for Detection of 3D objects in point clouds. We used a graph neural network (GNN) for Detection of 3D objects namely cars, pedestrians, and cyclists. Feature encoding is one of the…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Md Afzal Ansari , Md Meraz , Pavan Chakraborty , Mohammed Javed

3D object detection from LiDAR point cloud is a challenging problem in 3D scene understanding and has many practical applications. In this paper, we extend our preliminary work PointRCNN to a novel and strong point-cloud-based 3D object…

Computer Vision and Pattern Recognition · Computer Science 2020-03-17 Shaoshuai Shi , Zhe Wang , Jianping Shi , Xiaogang Wang , Hongsheng Li

Successfully tracking the human body is an important perceptual challenge for robots that must work around people. Existing methods fall into two broad categories: geometric tracking and direct pose estimation using machine learning. While…

Computer Vision and Pattern Recognition · Computer Science 2019-08-06 Weilin Wan , Aaron Walsman , Dieter Fox

The ability to detect and segment moving objects in a scene is essential for building consistent maps, making future state predictions, avoiding collisions, and planning. In this paper, we address the problem of moving object segmentation…

Though deep learning methods have shown great success in 3D point cloud part segmentation, they generally rely on a large volume of labeled training data, which makes the model suffer from unsatisfied generalization abilities to unseen…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Yu Hao , Yi Fang

3D point cloud semantic segmentation is a challenging topic in the computer vision field. Most of the existing methods in literature require a large amount of fully labeled training data, but it is extremely time-consuming to obtain these…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Shuang Deng , Qiulei Dong , Bo Liu , Zhanyi Hu

Large and rich data is a prerequisite for effective training of deep neural networks. However, the irregularity of point cloud data makes manual annotation time-consuming and laborious. Self-supervised representation learning, which…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Xin Cao , Xinxin Han , Yifan Wang , Mengna Yang , Kang Li

The perception of motion behavior in a dynamic environment holds significant importance for autonomous driving systems, wherein class-agnostic motion prediction methods directly predict the motion of the entire point cloud. While most…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Kewei Wang , Yizheng Wu , Jun Cen , Zhiyu Pan , Xingyi Li , Zhe Wang , Zhiguo Cao , Guosheng Lin

Deep learning with 3D data such as reconstructed point clouds and CAD models has received great research interests recently. However, the capability of using point clouds with convolutional neural network has been so far not fully explored.…

Computer Vision and Pattern Recognition · Computer Science 2018-03-30 Binh-Son Hua , Minh-Khoi Tran , Sai-Kit Yeung

3D models of manufactured objects are important for populating virtual worlds and for synthetic data generation for vision and robotics. To be most useful, such objects should be articulated: their parts should move when interacted with.…

Graphics · Computer Science 2022-06-20 Xianghao Xu , Yifan Ruan , Srinath Sridhar , Daniel Ritchie

Point clouds data, as one kind of representation of 3D objects, are the most primitive output obtained by 3D sensors. Unlike 2D images, point clouds are disordered and unstructured. Hence it is not straightforward to apply classification…

Computer Vision and Pattern Recognition · Computer Science 2019-06-03 Zhuyang Xie , Junzhou Chen , Bo Peng

LiDAR-based 3D object detection is an important task for autonomous driving and current approaches suffer from sparse and partial point clouds of distant and occluded objects. In this paper, we propose a novel two-stage approach, namely…

Computer Vision and Pattern Recognition · Computer Science 2020-12-23 Yanan Zhang , Di Huang , Yunhong Wang

Manual annotation of large-scale point cloud dataset for varying tasks such as 3D object classification, segmentation and detection is often laborious owing to the irregular structure of point clouds. Self-supervised learning, which…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Mohamed Afham , Isuru Dissanayake , Dinithi Dissanayake , Amaya Dharmasiri , Kanchana Thilakarathna , Ranga Rodrigo

3D point clouds are a crucial type of data collected by LiDAR sensors and widely used in transportation applications due to its concise descriptions and accurate localization. Deep neural networks (DNNs) have achieved remarkable success in…

Computer Vision and Pattern Recognition · Computer Science 2023-05-25 Changyu Zeng , Wei Wang , Anh Nguyen , Yutao Yue

Object classification using LiDAR 3D point cloud data is critical for modern applications such as autonomous driving. However, labeling point cloud data is labor-intensive as it requires human annotators to visualize and inspect the 3D data…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Ziwei Wang , Reza Arablouei , Jiajun Liu , Paulo Borges , Greg Bishop-Hurley , Nicholas Heaney

Parts provide a good intermediate representation of objects that is robust with respect to the camera, pose and appearance variations. Existing works on part segmentation is dominated by supervised approaches that rely on large amounts of…

Computer Vision and Pattern Recognition · Computer Science 2019-05-06 Wei-Chih Hung , Varun Jampani , Sifei Liu , Pavlo Molchanov , Ming-Hsuan Yang , Jan Kautz

The analyses relying on 3D point clouds are an utterly complex task, often involving million of points, but also requiring computationally efficient algorithms because of many real-time applications; e.g. autonomous vehicle. However, point…

Computer Vision and Pattern Recognition · Computer Science 2019-06-11 Can Chen , Luca Zanotti Fragonara , Antonios Tsourdos