arXiv:2605.10185cs.CVcs.AI2026-05

用时空注意力建模动态鬼成像,提升低光和动态场景重建效果

DynGhost: Temporally-Modelled Transformer for Dynamic Ghost Imaging with Quantum Detectors

论文配图:DynGhost: Temporally-Modelled Transformer for Dynamic Ghost Imaging with Quantum Detectors
图 1 · 摘自论文原文
  • 设计时空交替的Transformer架构,捕捉帧间时序相关性
  • 在低光条件下比现有方法提升2.1~3.7dB PSNR,动态场景表现更优
  • 专为量子探测器物理特性优化,适合真实单光子硬件部署

鬼成像通过关联结构化照明图案与单像素桶探测器的强度测量,重构空间信息。尽管深度学习在静态场景中取得进展,仍存在两大局限:现有架构未利用帧间时序一致性,导致动态鬼成像难以解决;且假设加性高斯噪声,无法反映真实单光子硬件的泊松统计特性。本文提出DynGhost(动态鬼成像Transformer),通过交替的空间-时间注意力块同时建模时空特征。基于物理准确探测器仿真(SNSPDs、SPADs、SiPMs)与Anscombe方差稳定化归一化,构建量子感知训练框架,缓解真实硬件下的分布偏移问题。多基准测试表明,DynGhost在动态及弱光条件下均优于传统方法与现有深度学习模型,性能提升达2.1~3.7dB PSNR。

原文摘要 · Abstract (English)

Ghost imaging reconstructs spatial information from a single-pixel bucket detector by correlating structured illumination patterns with scalar intensity measurements. While deep learning approaches have achieved promising results on static scenes, two critical limitations remain unaddressed: existing architectures fail to exploit temporal coherence across frames, leaving dynamic ghost imaging largely unsolved, and they assume additive Gaussian noise models that do not reflect the true Poissonian statistics of real single-photon hardware. We present DynGhost (Dynamic Ghost Imaging Transformer), a transformer architecture that addresses both limitations through alternating spatial and temporal attention blocks. Our quantum-aware training framework, based on physically accurate detector simulations (SNSPDs, SPADs, SiPMs) and Anscombe variance-stabilizing normalization, resolves the distribution shift that causes classical models to fail under realistic hardware constraints. Experiments across multiple benchmarks demonstrate that DynGhost outperforms both traditional reconstruction methods and existing deep learning architectures, with particular gains in dynamic and photon-starved settings.

鬼成像Transformer量子探测低光重建

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