We present a novel framework for mesh reconstruction from unstructured point clouds by taking advantage of the learned visibility of the 3D points in the virtual views and traditional graph-cut based mesh generation. Specifically, we first propose a three-step network that explicitly employs depth completion for visibility prediction. Then the visibility information of multiple views is aggregated to generate a 3D mesh model by solving an optimization problem considering visibility in which a novel adaptive visibility weighting in surface determination is also introduced to suppress line of sight with a large incident angle. Compared to other learning-based approaches, our pipeline only exercises the learning on a 2D binary classification task, \ie, points visible or not in a view, which is much more generalizable and practically more efficient and capable to deal with a large number of points. Experiments demonstrate that our method with favorable transferability and robustness, and achieve competing performances \wrt state-of-the-art learning-based approaches on small complex objects and outperforms on large indoor and outdoor scenes. Code is available at https://github.com/GDAOSU/vis2mesh.

提出了一种从无结构点云中重建网格的新框架，通过利用虚拟视图中三维点的可见性和基于传统图割的网格生成。与其他基于学习的方法相比，该方法只在二维二分类任务上进行学习，更加普适和实用。实验表明，在小型复杂物体上，该方法具有良好的可传递性和鲁棒性，并与最先进的学习方法相比具有竞争优势，并且在大型室内和室外场景中表现出色。

Vis2Mesh: 从大型不规则点云中通过学习的虚拟视图可见性实现高效网格重构