先用训练样本对模型SRCNN进行训练，然后使用测试样本测试模型的有效性-First with the effectiveness of the model SRCNN training samples for training, and then use the test sample test model

利用matlab做深度学习，SRCNN作为超分辨率重建开山之作，用matlab进行代码复现(Matlab to do deep learning, SRCNN as a super resolution reconstruction work, using matlab for code reproduction)