Multimode optical fiber transmission image migration reconstruction algorithm based on numerical speckles

The invention relates to a multimode optical fiber transmission image migration reconstruction algorithm based on numerical speckles. The method comprises the following steps: firstly, obtaining an experimental speckle image data set; then generating a simulation speckle image data set by using a numerical simulation method; analyzing the characteristics of the experimental speckles and the simulated speckles; designing a loss function fusing speckle characteristics, and the transfer learning ability of the U_Net network is enhanced; inputting the simulation speckles into the U_Net network, and training the simulation speckles into a simulation network model; and reconstructing the original image from the experimental speckle image by directly using the simulation network model subsequently. 本发明涉及一种基于数值散斑的多模光纤传输图像迁移重构算法，该方法首先获取到实验散斑图像数据集；然后利用数值仿真方法生成仿真散斑图像数据集；接下来分析出实验散斑与仿真散斑的特性；设计融合了散斑特性的损失函数，增强U_Net网络的迁移学习能力；然后将仿真散斑输入到U_Net网络中，训练成仿真网络模型；便于后续直接利用仿真网络模型从实验散斑图像中重构出原始图像。