Three-dimensional magnetic layer reconstruction method and system based on limited angle projection data
A projection data, limited angle technology, applied in the field of spatial detection projection reconstruction, can solve the problem of loss of detail information, distortion, etc., to achieve the effect of strengthening generalization ability and improving accuracy
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Embodiment 1
[0083] The full name of the generative confrontation network is Generative Adversarial Networks, referred to as GAN. It is an unsupervised learning method proposed by Goodfellow et al. in 2014. It includes two parts: the generator network and the discriminator network. The generator network is dedicated to generating. Realistic data comparable to real data, the discriminator is dedicated to discriminating between real data and generator-generated data. The two networks play games with each other. The generator is forced to generate seemingly real samples out of continuous learning of real data under pressure, and the discriminator further learns to distinguish generated samples from real samples. In 2016, AlecRadford proposed Deep Convolution Generative Adversarial Networks (DCGAN) on the basis of GAN. The network structure diagram of DCGAN is similar to that of GAN, but both the generation network and the discriminant network use depth. Convolutional neural network, and remov...
Embodiment 2
[0143] Embodiment 2 of the present invention proposes a three-dimensional magnetosphere reconstruction system based on limited-angle projection data, which is implemented based on the method in embodiment 1. The system includes: a missing-angle three-dimensional projection data generation module, a completion module and a three-dimensional reconstruction module ;in,
[0144] The missing-angle three-dimensional projection data generating module is used to receive three-dimensional magnetospheric X-ray projection data of a limited angle, and input the pre-established and trained 3D generation confrontation network to obtain three-dimensional projection data of missing angles;
[0145] The completion module is used to optimize the three-dimensional projection data generated by the 3D generation confrontation network based on the projection optimization completion network, so as to realize the data completion of the missing angle of the three-dimensional projection data;
[0146] ...
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