Papers › Analytic Marching: An Analytic Meshing Solution from Deep Implicit Surface Networks

Analytic Marching: An Analytic Meshing Solution from Deep Implicit Surface Networks

16 Feb 2020ICML 2020 1arXiv:2002.06597archive 2025-07-28

Jiabao Lei, Kui Jia

This paper studies a problem of learning surface mesh via implicit functions in an emerging field of deep learning surface reconstruction, where implicit functions are popularly implemented as multi-layer perceptrons (MLPs) with rectified linear units (ReLU). To achieve meshing from learned implicit functions, existing methods adopt the de-facto standard algorithm of marching cubes; while promising, they suffer from loss of precision learned in the MLPs, due to the discretization nature of marching cubes. Motivated by the knowledge that a ReLU based MLP partitions its input space into a number of linear regions, we identify from these regions analytic cells and analytic faces that are associated with zero-level isosurface of the implicit function, and characterize the theoretical conditions under which the identified analytic faces are guaranteed to connect and form a closed, piecewise planar surface. Based on our theorem, we propose a naturally parallelizable algorithm of analytic marching, which marches among analytic cells to exactly recover the mesh captured by a learned MLP. Experiments on deep learning mesh reconstruction verify the advantages of our algorithm over existing ones.

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Karbo123/AnalyticMesh officialmentioned on GitHubpytorchMIT report

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Surface Reconstruction

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ReLU

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