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Author:

Wang, Yingrui (Wang, Yingrui.) | Wang, Suyu (Wang, Suyu.) | Sun, Longhua (Sun, Longhua.)

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CPCI-S EI Scopus

Abstract:

Point clouds captured by 3D scanning are usually sparse and noisy. Reconstructing a high-resolution 3D model of an object is a challenging task in computer vision. Recent point cloud upsampling approaches aim to generate a dense point set, while achieving both distribution uniformity and proximity-to-surface directly via an end-to-end network. Although dense reconstruction from low to high resolution can be realized by using these techniques, it lacks abundant details for dense outputs. In this work, we propose a coarse-to-fine network PUGL-Net for point cloud reconstruction that first predicts a coarse high-resolution point cloud via a global dense reconstruction module and then increases the details by aggregating local point features. On the one hand, a transformer-based mechanism is designed in the global dense reconstruction module. It aggregates residual learning in a self-attention scheme for effective global feature extraction. On the other hand, the coordinate offset of points is learned in a local refinement module. It further refines the coarse points by aggregating KNN features. Evaluated through extensive quantitative and qualitative evaluation on synthetic data set, the proposed coarse-to-fine architecture generates point clouds that are accurate, uniform and dense, it outperforms most existing state-of-the-art point cloud reconstruction works. © 2022, Springer Nature Switzerland AG.

Keyword:

Computer vision Signal sampling Three dimensional computer graphics Image reconstruction 3D modeling

Author Community:

  • [ 1 ] [Wang, Yingrui]Faculty of Information Technology, Beijing University of Technology, Beijing, China
  • [ 2 ] [Wang, Suyu]Faculty of Information Technology, Beijing University of Technology, Beijing, China
  • [ 3 ] [Sun, Longhua]Faculty of Information Technology, Beijing University of Technology, Beijing, China

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Source :

ISSN: 0302-9743

Year: 2022

Volume: 13141 LNCS

Page: 467-478

Language: English

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 14

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