arXiv:2608.03257cs.CV2026-08

用物理驱动的端到端框架解决纳米材料三维重构中的失真与噪声问题。

NanoMorph-3D: An End-to-End Physics-Driven Unrolling Framework for Nanomaterial Reconstruction

  • 将梯度下降过程转化为可学习的物理驱动网络,融合非线性电子衰减建模。
  • 在合成数据上实现高保真重建,对复杂拓扑结构保持良好精度。
  • 适合从事材料科学、电子断层成像与物理引导深度学习的研究者。

精确的纳米材料三维表征对于揭示结构-性能关系至关重要。然而,标准电子断层成像受缺角问题根本限制,导致传统算法存在严重几何失真,且普遍受噪声干扰。现有基于学习的方法或依赖无物理依据的后处理,或采用局部感受野受限的端到端架构,难以捕捉复杂三维拓扑。本文提出NanoMorph-3D,一个基于全面纳米形态分类体系的统一端到端框架。依托大规模显式建模非线性电子衰减的合成数据集,设计了物理驱动的展开网络,将近端梯度下降映射为可学习结构。为捕捉复杂内部拓扑,引入具有物理归一化的层次化注意力机制,实现长程3D依赖建模与尺度不变性。关键创新在于双域策略,利用正弦注意力显式建模物理投影轨迹,强制正弦图一致性以缓解缺角伪影。最后,无监督双流机制弥合仿真到现实的差距。实验表明,NanoMorph-3D在多样拓扑下均实现更高保真度与更快重建速度。

原文摘要 · Abstract (English)

Precise 3D characterization of nanomaterials is essential for unlocking structure-property relationships. However, standard electron tomography is fundamentally limited by the missing wedge problem. Consequently, conventional algorithms suffer from severe geometric distortions, a challenge further complicated by pervasive noise interference. Current learning-based methods either rely on physics-blind post-processing or employ end-to-end architectures constrained by local receptive fields, failing to capture complex 3D topologies. We propose NanoMorph-3D, a unified end-to-end framework grounded in a comprehensive Nanomorphological Taxonomy. Powered by a large-scale synthetic dataset explicitly modeling non-linear electron attenuation, we design a Physics-Driven Unrolled Network mapping proximal gradient descent into a learnable architecture. To capture complex internal topologies, we formulate a hierarchical attention mechanism with Physics-Normalization for long-range 3D dependencies and scale invariance. Crucially, our Dual-Domain strategy leverages Sinusoidal Attention to explicitly model physical projection trajectories, enforcing strict sinogram consistency to mitigate missing wedge artifacts. Finally, an unsupervised dual-stream mechanism bridges the simulation-to-reality gap. Experiments demonstrate NanoMorph-3D reconstructs diverse topologies with superior fidelity and speed.

三维重构电子断层成像物理模型纳米材料

Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。