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conv_auto_negmapping.py
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__author__ = 'SherlockLiao'
import torch
import torchvision
from torch import nn
from torch.autograd import Variable
from torch.utils.data import DataLoader
from torchvision import transforms
from torchvision.utils import save_image
import os
from rainy_dataloader import RainyDataset
import cv2
from model import autoencoder
from skimage.measure import compare_ssim
from utils import *
img_dirs = "./dc_img_neg"
model_dirs = "./models_neg"
os.makedirs(img_dirs,exist_ok=True)
os.makedirs(model_dirs,exist_ok=True)
image_size = 64
num_epochs = 20
batch_size = 4
learning_rate = 1e-3
img_transform = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((image_size,image_size)),
transforms.ToTensor(),
transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)),
])
dataset_training = RainyDataset('rainy-image-dataset/training', transform=img_transform)
total_train = len(dataset_training)
dataloader_training = DataLoader(dataset_training, batch_size=batch_size, shuffle=True,num_workers=4)
model = autoencoder().cuda()
criterion = nn.MSELoss()
optimizer = torch.optim.Adam(model.parameters(), lr=learning_rate,
weight_decay=1e-5)
model.train()
print("Training model, total samples %d"%total_train)
for epoch in range(num_epochs):
epoch_loss = 0
os.makedirs('%s/epoch_%d'%(img_dirs,epoch),exist_ok=True)
ssim = 0
for index,data in enumerate(dataloader_training):
clean_img = data["clean"]
rainy_img = data["rain"]
clean_img = Variable(clean_img).cuda()
rainy_img = Variable(rainy_img).cuda()
# ===================forward=====================
output = model(rainy_img)
loss = criterion(output, clean_img - rainy_img)
epoch_loss += loss.data.item()
# ===================backward====================
optimizer.zero_grad()
loss.backward()
optimizer.step()
# ===================log========================
if (index % 20)== 0:
residual = -output.cpu().data
output = rainy_img + output
pic = to_img(output.cpu().data,image_size)
# print(pic.shape)
original = to_img(clean_img.cpu().data,image_size)
# print(original.shape)
rainy = to_img(rainy_img.cpu().data,image_size)
#BGR to RGB
permute = [2, 1, 0]
pic=pic[:, permute]
original=original[:, permute]
rainy=rainy[:, permute]
save_image(torch.cat((pic,residual,original,rainy)), '%s/epoch_%d/image_%d.png'%(img_dirs,epoch,index))
else:
output = rainy_img + output
clean_img = clean_img.cpu().detach().numpy()
output = output.cpu().detach().numpy()
for i in range(batch_size):
ssim += compare_ssim(clean_img[i].transpose(1,2,0),output[i].transpose(1,2,0),data_range = output[i].max() - output[i].min(),multichannel = True)
print('epoch [{}/{}], loss:{:.4f}'
.format(epoch, num_epochs-1, epoch_loss/total_train))
print("SSIM: %f"%(ssim/total_train))
torch.save(model.state_dict(), '%s/conv_autoencoder_%d.pth'%(model_dirs,epoch))
dataset_testing = RainyDataset('rainy-image-dataset/testing', transform=img_transform)
total_test = len(dataset_testing)
dataloader_testing = DataLoader(dataset_testing, batch_size=batch_size, shuffle=True,num_workers=4)
# model.load_state_dict(torch.load("%s/conv_autoencoder_9.pth"%model_dirs))
print("Validating model, total samples %d"%total_test)
model.eval()
test_loss = 0
os.makedirs('%s/testing'%img_dirs,exist_ok=True)
ssim = 0
for index,data in enumerate(dataloader_testing):
clean_img = data["clean"]
rainy_img = data["rain"]
clean_img = Variable(clean_img).cuda()
rainy_img = Variable(rainy_img).cuda()
# ===================forward=====================
output = model(rainy_img)
loss = criterion(output, clean_img - rainy_img)
test_loss += loss.data.item()
# ===================log========================
residual = -output.cpu().data
output = rainy_img + output
permute = [2,1,0]
pic = to_img(output.cpu().data,image_size)[:,permute]
original = to_img(clean_img.cpu().data,image_size)[:,permute]
rainy = to_img(rainy_img.cpu().data,image_size)[:,permute]
save_image(torch.cat((pic,residual,original,rainy)), '%s/testing/image_%d.png'%(img_dirs,index))
output = output.cpu().detach().numpy()
clean_img = clean_img.cpu().detach().numpy()
for i in range(batch_size):
ssim += compare_ssim(clean_img[i].transpose(1,2,0),output[i].transpose(1,2,0),data_range = output[i].max() - output[i].min(),multichannel = True)
print("Test loss",test_loss/total_test)
print("SSIM: %f"%(ssim/total_test))