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- W4281661877 abstract "Recent advances in learning 3D shapes using neural implicit functions have achieved impressive results by breaking the previous barrier of resolution and diversity for varying topologies. However, most of such approaches are limited to closed surfaces as they require the space to be divided into inside and outside. More recent works based on unsigned distance function have been proposed to handle complex geometry containing both the open and closed surfaces. Nonetheless, as their direct outputs are point clouds, robustly obtaining high-quality meshing results from discrete points remains an open question. We present a novel learnable implicit representation, called the three-pole signed distance function (3PSDF), that can represent non-watertight 3D shapes with arbitrary topologies while supporting easy field-to-mesh conversion using the classic Marching Cubes algorithm. The key to our method is the introduction of a new sign, the NULL sign, in addition to the conventional in and out labels. The existence of the null sign could stop the formation of a closed isosurface derived from the bisector of the in/out regions. Further, we propose a dedicated learning framework to effectively learn 3PSDF without worrying about the vanishing gradient due to the null labels. Experimental results show that our approach outperforms the previous state-of-the-art methods in a wide range of benchmarks both quantitatively and qualitatively." @default.
- W4281661877 created "2022-06-13" @default.
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- W4281661877 date "2022-05-31" @default.
- W4281661877 modified "2023-09-28" @default.
- W4281661877 title "3PSDF: Three-Pole Signed Distance Function for Learning Surfaces with Arbitrary Topologies" @default.
- W4281661877 doi "https://doi.org/10.48550/arxiv.2205.15572" @default.
- W4281661877 hasPublicationYear "2022" @default.
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