LaS-Comp：基于隐空间一致性的零样本三维补全

摘要

本文提出LaS-Comp——一种零样本且类别无关的三维形状补全方法，该方法利用三维基础模型丰富的几何先验，实现对各类局部观测数据的形状补全。我们的贡献包括三方面：首先，通过互补的双阶段设计利用生成先验进行补全：（i）显式替换阶段保留局部观测几何特征以确保补全真实性；（ii）隐式细化阶段确保观测区域与合成区域实现无缝边界衔接。其次，本框架无需训练且兼容不同三维基础模型。第三，我们构建了Omni-Comp综合基准，整合了具有多样化挑战性局部结构的真实场景与合成数据，支持更全面、更贴近实际的评估。定量与定性实验均表明，本方法优于现有最优方法。代码与数据详见https://github.com/DavidYan2001/LaS-Comp。

English

This paper introduces LaS-Comp, a zero-shot and category-agnostic approach that leverages the rich geometric priors of 3D foundation models to enable 3D shape completion across diverse types of partial observations. Our contributions are threefold: First, harnesses these powerful generative priors for completion through a complementary two-stage design: (i) an explicit replacement stage that preserves the partial observation geometry to ensure faithful completion; and (ii) an implicit refinement stage ensures seamless boundaries between the observed and synthesized regions. Second, our framework is training-free and compatible with different 3D foundation models. Third, we introduce Omni-Comp, a comprehensive benchmark combining real-world and synthetic data with diverse and challenging partial patterns, enabling a more thorough and realistic evaluation. Both quantitative and qualitative experiments demonstrate that our approach outperforms previous state-of-the-art approaches. Our code and data will be available at https://github.com/DavidYan2001/LaS-Comp{LaS-Comp}.

LaS-Comp：基于隐空间一致性的零样本三维补全

LaS-Comp: Zero-shot 3D Completion with Latent-Spatial Consistency

摘要

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