Local Offset Point Cloud Transformer Based Implicit Surface Reconstruction

Yang, Yan Xin; Zhang, San Guo

Local Offset Point Cloud Transformer Based Implicit Surface Reconstruction

Files

v41i7pp099-107.pdf (39.12 MB)

Date

2022

Authors

Yang, Yan Xin
Zhang, San Guo

Publisher

The Eurographics Association and John Wiley & Sons Ltd.

Abstract

Implicit neural representations, such as MLP, can well recover the topology of watertight object. However, MLP fails to recover geometric details of watertight object and complicated topology due to dealing with point cloud in a point-wise manner. In this paper, we propose a point cloud transformer called local offset point cloud transformer (LOPCT) as a feature fusion module. Before using MLP to learn the implicit function, the input point cloud is first fed into the local offset transformer, which adaptively learns the dependency of the local point cloud and obtains the enhanced features of each point. The feature-enhanced point cloud is then fed into the MLP to recover the geometric details and sharp features of watertight object and complex topology. Extensive reconstruction experiments of watertight object and complex topology demonstrate that our method achieves comparable or better results than others in terms of recovering sharp features and geometric details. In addition, experiments on watertight objects demonstrate the robustness of our method in terms of average result.

CCS Concepts: Computing methodologies --> Artificial intelligence; Mathematics of computing --> Graphs and surfaces

        @article{10.1111:cgf.14660
,
journal = {Computer Graphics Forum},
title = {{Local Offset Point Cloud Transformer Based Implicit Surface Reconstruction
}},
author = {Yang, Yan Xin and 
Zhang, San Guo
},
year = {2022
},
publisher = {The Eurographics Association and John Wiley & Sons Ltd.
},
ISSN = {1467-8659
},
DOI = {10.1111/cgf.14660
}
}