提出新方法实现未知光斑下的纳米级显微成像，提升重建精度与速度。
Ptychography using Blind Multi-Mode PMACE
- 基于多模式代理共识框架，联合估计物体透射图像与多个未知光斑。
- 在合成与实测数据上，重建质量与收敛速度优于现有方法。
- 适合需要高精度、多光斑重建的纳米光学成像研究者使用。
叠印成像是一种通过扫描重叠照明模式实现纳米级复数透射图像重构的成像技术。然而，照明函数通常未知，尤其在部分相干光源下更难重建。本文提出盲多模式投影多代理共识均衡（BM-PMACE）方法，用于盲叠印成像重建。我们扩展了分布式反问题中的PMACE框架，联合估计复杂透射图像与多个未知的、部分相干的探针函数。重要的是，该方法保持各探针位置的局部估计，以利用多位置间的互补信息，并引入动态策略整合额外探针模式。通过合成数据和实测数据的实验仿真与验证，结果表明BM-PMACE在重建质量与收敛速度方面均优于现有方法。
原文摘要 · Abstract (English)
Ptychography is an imaging technique that enables nanometer-scale reconstruction of complex transmittance images by scanning objects with overlapping illumination patterns. However, the illumination function is typically unknown, which presents challenges for reconstruction, especially when using partially coherent light sources. In this paper, we introduce Blind Multi-Mode Projected Multi-Agent Consensus Equilibrium (BM-PMACE) for blind ptychographic reconstruction. We extend the PMACE framework for distributed inverse problems to jointly estimate the complex transmittance image and multiple, unknown, partially coherent probe functions. Importantly, our method maintains local probe estimates to exploit complementary information at multiple probe locations. Our method also incorporates a dynamic strategy for integrating additional probe modes. Through experimental simulations and validations using both synthetic and measured data, we demonstrate that BM-PMACE outperforms existing approaches in reconstruction quality and convergence rate.
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