用拓扑结构优化3D高斯点云,提升重建细节与视觉一致性。
Topology-Aware 3D Gaussian Splatting: Leveraging Persistent Homology for Optimized Structural Integrity
- 引入持久同调指导自适应插值,增强低曲率区域覆盖
- 通过拓扑损失约束渲染图像与真实图像的特征距离,提升结构保真度
- 在三个新视角合成基准上表现优于现有方法,适合高质量3D重建任务
高斯点阵(GS)已成为表示离散体素辐射场的关键技术,其独特参数化有效降低场景优化的计算负担。本文提出拓扑感知3D高斯点阵(Topology-GS),解决当前方法中因初始几何覆盖不全导致的像素级结构失真,以及优化过程中拓扑约束不足引发的特征级完整性缺失问题。为克服上述局限,Topology-GS引入一种新型插值策略——局部持久维诺插值(LPVI),利用持久同调引导自适应插值,在低曲率区域增强点覆盖的同时保持拓扑结构;并设计基于持久条形码的拓扑专注正则项PersLoss,通过约束渲染图像与真实图像间拓扑特征的距离,提升视觉感知相似性。在三个新视角合成基准上的全面实验表明,Topology-GS在PSNR、SSIM和LPIPS指标上均优于现有方法,同时保持高效内存占用。本研究首次将拓扑分析融入3D-GS,为该领域未来发展奠定基础。
原文摘要 · Abstract (English)
Gaussian Splatting (GS) has emerged as a crucial technique for representing discrete volumetric radiance fields. It leverages unique parametrization to mitigate computational demands in scene optimization. This work introduces Topology-Aware 3D Gaussian Splatting (Topology-GS), which addresses two key limitations in current approaches: compromised pixel-level structural integrity due to incomplete initial geometric coverage, and inadequate feature-level integrity from insufficient topological constraints during optimization. To overcome these limitations, Topology-GS incorporates a novel interpolation strategy, Local Persistent Voronoi Interpolation (LPVI), and a topology-focused regularization term based on persistent barcodes, named PersLoss. LPVI utilizes persistent homology to guide adaptive interpolation, enhancing point coverage in low-curvature areas while preserving topological structure. PersLoss aligns the visual perceptual similarity of rendered images with ground truth by constraining distances between their topological features. Comprehensive experiments on three novel-view synthesis benchmarks demonstrate that Topology-GS outperforms existing methods in terms of PSNR, SSIM, and LPIPS metrics, while maintaining efficient memory usage. This study pioneers the integration of topology with 3D-GS, laying the groundwork for future research in this area.
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