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Scene understanding based on LiDAR point cloud is an essential task for autonomous cars to drive safely, which often employs spherical projection to map 3D point cloud into multi-channel 2D images for semantic segmentation. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2021-07-19 Aoran Xiao , Xiaofei Yang , Shijian Lu , Dayan Guan , Jiaxing Huang

The paper is a short review of medical image segmentation using U-Net and its variants. As we understand going through a medical images is not an easy job for any clinician either radiologist or pathologist. Analysing medical images is the…

Image and Video Processing · Electrical Eng. & Systems 2022-04-20 Vinay Ummadi

Medical imaging is essential in healthcare to provide key insights into patient anatomy and pathology, aiding in diagnosis and treatment. Non-invasive techniques such as X-ray, Magnetic Resonance Imaging (MRI), Computed Tomography (CT), and…

Image and Video Processing · Electrical Eng. & Systems 2024-12-04 Fnu Neha , Deepshikha Bhati , Deepak Kumar Shukla , Sonavi Makarand Dalvi , Nikolaos Mantzou , Safa Shubbar

We propose a graph neural network(GNN) based method to incorporate scene context for the semantic segmentation of 3D LiDAR data. The problem is defined as building a graph to represent the topology of a center segment with its…

Robotics · Computer Science 2020-04-01 Jilin Mei , Huijing Zhao

State-of-the-art models on contemporary 3D segmentation benchmarks like ScanNet consume and label dataset-provided 3D point clouds, obtained through post processing of sensed multiview RGB-D images. They are typically trained in-domain,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-27 Ayush Jain , Pushkal Katara , Nikolaos Gkanatsios , Adam W. Harley , Gabriel Sarch , Kriti Aggarwal , Vishrav Chaudhary , Katerina Fragkiadaki

Point cloud segmentation is central to autonomous driving and 3D scene understanding. While voxel- and point-based methods dominate recent research due to their compatibility with deep architectures and ability to capture fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Paul Julius Kühn , Duc Anh Nguyen , Arjan Kuijper , Saptarshi Neil Sinha

Storing and transmitting LiDAR point cloud data is essential for many AV applications, such as training data collection, remote control, cloud services or SLAM. However, due to the sparsity and unordered structure of the data, it is…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Till Beemelmanns , Yuchen Tao , Bastian Lampe , Lennart Reiher , Raphael van Kempen , Timo Woopen , Lutz Eckstein

Within a perception framework for autonomous mobile and robotic systems, semantic analysis of 3D point clouds typically generated by LiDARs is key to numerous applications, such as object detection and recognition, and scene reconstruction.…

Robotics · Computer Science 2024-10-14 Samir Abou Haidar , Alexandre Chariot , Mehdi Darouich , Cyril Joly , Jean-Emmanuel Deschaud

This paper presents a new approach to 3D object detection that leverages the properties of the data obtained by a LiDAR sensor. State-of-the-art detectors use neural network architectures based on assumptions valid for camera images.…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Guus Engels , Nerea Aranjuelo , Ignacio Arganda-Carreras , Marcos Nieto , Oihana Otaegui

Accurate eye segmentation can improve eye-gaze estimation and support interactive computing based on visual attention; however, existing eye segmentation methods suffer from issues such as person-dependent accuracy, lack of robustness, and…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Aayush K. Chaudhary , Rakshit Kothari , Manoj Acharya , Shusil Dangi , Nitinraj Nair , Reynold Bailey , Christopher Kanan , Gabriel Diaz , Jeff B. Pelz

Precise segmentation of objects with highly similar shapes remains a challenging problem in dense prediction, especially in scenarios with ambiguous boundaries, overlapping instances, and weak inter-instance visual differences. While…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Rui Xiao

3D LiDAR point cloud data is crucial for scene perception in computer vision, robotics, and autonomous driving. Geometric and semantic scene understanding, involving 3D point clouds, is essential for advancing autonomous driving…

Computer Vision and Pattern Recognition · Computer Science 2024-11-04 Li Li

Airborne topographic LiDAR is an active remote sensing technology that emits near-infrared light to map objects on the Earth's surface. Derived products of LiDAR are suitable to service a wide range of applications because of their rich…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Mariona Caros , Ariadna Just , Santi Segui , Jordi Vitria

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

Blur detection is the separation of blurred and clear regions of an image, which is an important and challenging task in computer vision. In this work, we regard blur detection as an image segmentation problem. Inspired by the success of…

Computer Vision and Pattern Recognition · Computer Science 2020-06-08 Fan Yang , Xiao Xiao

3D point clouds are rich in geometric structure information, while 2D images contain important and continuous texture information. Combining 2D information to achieve better 3D semantic segmentation has become mainstream in 3D scene…

Computer Vision and Pattern Recognition · Computer Science 2022-12-14 Chaolong Yang , Yuyao Yan , Weiguang Zhao , Jianan Ye , Xi Yang , Amir Hussain , Kaizhu Huang

Deep convolutional neural networks (CNNs) have shown outstanding performance in the task of semantically segmenting images. However, applying the same methods on 3D data still poses challenges due to the heavy memory requirements and the…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Radu Alexandru Rosu , Peer Schütt , Jan Quenzel , Sven Behnke

We propose a novel deep learning-based framework to tackle the challenge of semantic segmentation of large-scale point clouds of millions of points. We argue that the organization of 3D point clouds can be efficiently captured by a…

Computer Vision and Pattern Recognition · Computer Science 2018-03-29 Loic Landrieu , Martin Simonovsky

We introduce 3D-SIS, a novel neural network architecture for 3D semantic instance segmentation in commodity RGB-D scans. The core idea of our method is to jointly learn from both geometric and color signal, thus enabling accurate instance…

Computer Vision and Pattern Recognition · Computer Science 2019-04-30 Ji Hou , Angela Dai , Matthias Nießner

Point clouds are an efficient data format for 3D data. However, existing 3D segmentation methods for point clouds either do not model local dependencies \cite{pointnet} or require added computations \cite{kd-net,pointnet2}. This work…

Computer Vision and Pattern Recognition · Computer Science 2018-04-02 Qiangui Huang , Weiyue Wang , Ulrich Neumann
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