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Zhidong Liang

4 accepted papers

2021

CentroidReg: A Global-to-Local Framework for Partial Point Cloud Registration

RA-L 2021

Point cloud registration is a key problem for robotics, computer vision, and other applications. Previous global registration algorithms are sensitive to noises or partial occlusion, while local registration algorithms are highly dependent on initial angles. To solve these problems, we propose Centr

Cited by 13SourceScholar
2021

RangeIoUDet: Range Image Based Real-Time 3D Object Detector Optimized by Intersection Over Union

CVPR 2021poster

Real-time and high-performance 3D object detection is an attractive research direction in autonomous driving. Recent studies prefer point based or voxel based convolution for achieving high performance. However, these methods suffer from the unsatisfied efficiency or complex customized convolution,…

Cited by 79PDFScholar
2020

3D Instance Embedding Learning With a Structure-Aware Loss Function for Point Cloud Segmentation

RA-L 2020

This letter presents a framework for 3D instance segmentation on point clouds. A 3D convolutional neural network is used as the backbone to generate semantic predictions and instance embeddings simultaneously. In addition to the embedding information, point clouds also provide 3D geometric informati

Cited by 33SourceScholar
2019

Hierarchical Depthwise Graph Convolutional Neural Network for 3D Semantic Segmentation of Point Clouds

ICRA 2019poster

This paper proposes a hierarchical depthwise graph convolutional neural network (HDGCN) for point cloud semantic segmentation. The main chanllenge for learning on point clouds is to capture local structures or relationships. Graph convolution has the strong ability to extract local shape information…

Cited by 114SourceScholar