关于学习SDF使用MLP配备定位编码的最佳采样方法
IEEE transactions on visualization and computer graphics
|March 3, 2025
概括
本研究引入了一种富里埃分析方法,以确定神经隐性场的最佳采样率,减少具有位置编码 (PE) 的多层感知子 (MLPs) 中的噪音工件. 这确保了准确的3D形状表示,没有不必要的计算成本.
科学领域:
- 计算机视觉 计算机视觉
- 几何深度学习 几何深度学习
- 信号处理 信号处理
背景情况:
- 神经隐性场,就像神经签名距离场 (SDF),对于3D形状表示和分析至关重要.
- 通常使用具有位置编码 (PE) 的多层感知子 (MLP),但可以在学习领域产生杂的工件.
- 增加采样率可以减轻人工物,但最佳率尚未明确定义.
研究的目的:
- 用富里埃分析分析PE装备的MLP中噪音器件的原因.
- 开发一种方法来确定训练神经隐性场的适当采样率.
- 为了提高学习神经隐性表示的准确性和效率.
主要方法:
- 应用福里埃分析来了解PE装备的MLP的行为.
- 提出了一种方法,根据网络的响应来估计网络的内在频率.
- 利用尼奎斯特-香农抽样定理来推导出一个最佳的训练抽样率.
- 在SDF装配的背景下经验验证了该方法.
主要成果:
- 确定PE装备的MLP具有明显高于最高PE频率组件的内在频率.
- 证明根据估计的内在频率采样可以防止不良工件.
- 展示了推的采样速率可以实现准确的SDF配件,而不会因过量采样而进一步获益.
- 通过采用拟议的抽样策略,与现有方法相比,实现了更高的性能.
结论:
- 拟议的基于福里埃分析的采样策略有效地减轻了神经隐性场中的工件.
- 这种方法提供了一种原则性的方法来设定培训采样率,提高准确性和效率.
- 这些发现为研究人员和从业人员提供了有价值的工具,他们致力于神经隐含表示.
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