Code of P2Sharpen: A progressive pansharpening network with deep spectral transformation.

python=3.8, pytorch-gpu=1.7.1, matlab = 2018a.

• Construct the train, validation, test dataset according to the Wald protocol.
  
• Put the all the dataset in the root directory, namely TrainFolder, ValidFolder and TestFolder.
  
• In each directory, there are four subdirectories, namely pan_label/ ms_label/ pan/ ms/
  
• The images in each directory should correspond to each other.
  

• The whole training process contains two part, STNet and P2Net.
  
• Please run "transfertrain.py" to learn the spectral tranformation network(STNet).
  
• TNet guides the optimization of P2Net, so ensuring the accuracy before the next step.
  
• Please run "fusiontrain.py" to learn the progressive pansharpening network (P2Net).
  

• Use the functions in the file ".\Eval.py" or others to evalute the performance on valid dataset.
  
• Pick out the best parameters and save it in path "./Model/P2Net/fusion.pth".
  

• Run the "fusionpredict.py" to generate the pansharpening results.
  
• Open the Matlab and run the file ".\Evalution\FusionEval.m".