Prior-free imaging beyond the memory effect (ME) is critical to seeing through the scattering media. However, methods proposed to exceed the ME range have suffered from the availability of prior information of imaging targets. Here, we propose a blind target position detection for large field-of-view scattering imaging. Only exploiting two captured multi-target near-field speckles at different imaging distances, the unknown number and locations of the isolated imaging targets are blindly reconstructed via the proposed scaling-vector-based detection. Autocorrelations can be calculated for the speckle regions centered by the derived positions via low-cross-talk region allocation strategy. Working with the modified phase retrieval algorithm, the complete scene of the multiple targets exceeding the ME range can be reconstructed without any prior information. The effectiveness of the proposed algorithm is verified by testing on a real scattering imaging system.

中文翻译：

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用于大视场散射成像的无先验位置检测

超越记忆效应 (ME) 的无先验成像对于透视散射介质至关重要。然而，提出的超出 ME 范围的方法受到成像目标先验信息的可用性的影响。在这里，我们提出了一种用于大视场散射成像的盲目标位置检测。仅利用在不同成像距离处捕获的两个多目标近场散斑，通过提出的基于缩放矢量的检测盲重建孤立成像目标的未知数量和位置。可以通过低串扰区域分配策略计算以导出位置为中心的散斑区域的自相关。使用修改后的相位检索算法，可以在没有任何先验信息的情况下重建超出 ME 范围的多个目标的完整场景。通过在真实的散射成像系统上进行测试，验证了所提出算法的有效性。