Abstract:In order to solve the problem that traditional neural networks cannot integrate the bottom position features and the top semantic features of the capacitive feature tensor well in ECT image reconstruction, an enhanced dense connection network model is proposed. First, the initial dielectric constant distribution is obtained by training the Fully Connected Neural network, and the output characteristic map of the fully connected neural network is used as the input of the compensated U-net network. Secondly, a compensated U-net network is built, and a DenseNet-like dense jump connection mechanism is added between the encoder and decoder to retain a large amount of underlying location feature information and reduce the feature loss of multiple output nodes of the model. At the same time, the multi-scale dense cavity convolutional module is used to replace the ordinary convolution in the compensated U-net to enlarge the receptive field of the model and enrich the multi-scale information. Finally, an efficient channel attention mechanism module is used to realize the cross-channel interaction of the output features of sub-decoder nodes, which enhances the model's attention to important information and improves the nonlinear fitting ability of the model. The experimental results show that the reconstructed images based on this algorithm have higher resolution, clearer imaging edges, and more robustness than the Landweber iterative algorithm and the U-net algorithm.
马敏,孙妮. 一种增强型稠密连接网络模型应用于ECT图像重建[J]. 振动与冲击, 2024, 43(10): 82-88.
MA Min,SUN Ni. Enhanced dense connectivity network model applied to ECT image reconstruction. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(10): 82-88.
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