def main():
# instantiate model and initialize weights
model = AutoNet(input_nc=args.input_nc, ndf=6, nonlinear='relu')
networks.print_network(model)
if args.cuda:
model.cuda()
print('using pretrained model')
checkpoint = torch.load(project_root + args.log_dir + '/checkpoint_60.pth')
model.load_state_dict(checkpoint['state_dict'])
args.lr = args.lr * 0.001
itr_start = 1
nature = test_nature(val_loader, model)
print(nature)
threshold = max(2, nature * 2)
# define loss function (criterion) and optimizer
criterion = nn.CrossEntropyLoss().cuda()
optimizer = create_optimizer(model, args.lr)
new_samples = []
pn_num = []
nature_error_itr_global = []
for itr in np.arange(itr_start, 5):
args.dataroot = dst_dir
tmp = construct_negative_samples(model, new_samples, itr)
pn_num.append(tmp)
train_loader = myDataset.DataLoaderHalf(
myDataset.MyDataset(
args,
transforms.Compose([
transforms.Resize((256, 256), Image.BICUBIC),
transforms.ToTensor(), normalize
])),
batch_size=args.batch_size,
shuffle=True,
half_constraint=True,
sampler_type='RandomBalancedSampler',
**kwargs)
print('The number of train data:{}'.format(len(train_loader.dataset)))
args.epochs = 15 # after the new negative samples construct, the learning rate is constant, and epoch = 15
train_multi(train_loader, optimizer, model, criterion, val_loader, itr,
nature_error_itr_global)
print(pn_num)
model_selection(nature_error_itr_global, threshold)
kwargs = {'num_workers': 8, 'pin_memory': True} if args.cuda else {}
data_root = '/home/wzquan/publicData/NIvsCG/RRVData/RRVNature-Corona'
project_root = '/home/wzquan/Project/NIvsCG/RRVNature-project/RRVNature-Corona/SrcCode'
LOG_DIR = project_root + args.log_dir
if not os.path.exists(LOG_DIR):
os.makedirs(LOG_DIR)
normalize = transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))
args.dataroot = os.path.join(data_root, 'train')
train_loader = myDataset.DataLoaderHalf(myDataset.MyDataset(
args,
transforms.Compose([
transforms.RandomCrop(233),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(), normalize
])),
batch_size=args.batch_size,
shuffle=True,
half_constraint=True,
sampler_type='RandomBalancedSampler',
**kwargs)
print('The number of train data:{}'.format(len(train_loader.dataset)))
def main():
# instantiate model and initialize weights
model = ENet()
networks.print_network(model)
args.cuda = not args.no_cuda and torch.cuda.is_available()
np.random.seed(args.seed)
if args.cuda:
cudnn.benchmark = True
kwargs = {'num_workers': 8, 'pin_memory': True} if args.cuda else {}
data_root = '/home/wzquan/publicData/colorization/'
project_root = '/home/wzquan/Project/colorization'
normalize = transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))
args.dataroot = os.path.join(data_root, 'test_data_all/test_images')
test_loader = torch.utils.data.DataLoader(myDataset.MyDataset(
args,
transforms.Compose([
transforms.Resize((256, 256), Image.BICUBIC),
transforms.ToTensor(), normalize
])),
batch_size=args.test_batch_size,
shuffle=False,
**kwargs)
print('The number of val data:{}'.format(len(test_loader.dataset)))
args.dataroot = os.path.join(data_root, 'test_data_all/test_images_B')
test_loader_2 = torch.utils.data.DataLoader(myDataset.MyDataset(
args,
transforms.Compose([
transforms.Resize((256, 256), Image.BICUBIC),
transforms.ToTensor(), normalize
])),
batch_size=args.test_batch_size,
def main():
# instantiate model and initialize weights
model = ENet()
networks.print_network(model)
networks.init_weights(model, init_type='normal')
model.init_convFilter(trainable=srm_trainable)
if args.cuda:
model.cuda()
print('using pretrained model')
checkpoint = torch.load(project_root + args.log_dir +
'/checkpoint_300.pth')
model.load_state_dict(checkpoint['state_dict'])
args.lr = args.lr * 0.001
threshold = THRESHOLD_MAX
# define loss function (criterion) and optimizer
criterion = nn.CrossEntropyLoss().cuda()
L1_criterion = nn.L1Loss(reduction='sum').cuda()
if not srm_trainable:
params = []
for name, param in model.named_parameters():
if name.find('convFilter1') == -1:
params += [param]
optimizer = create_optimizer(params, args.lr)
else:
optimizer = create_optimizer(model.parameters(), args.lr)
nature_error_itr_global = []
for itr in np.arange(1, 11):
args.dataroot = dst_dir
nature_error_itr_local = []
# adding negative samples into the original training dataset
construct_negative_samples(itr)
train_loader = myDataset.DataLoaderHalf(
myDataset.MyDataset(
args,
transforms.Compose([
transforms.RandomCrop(233),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(), normalize
])),
batch_size=args.batch_size,
shuffle=True,
half_constraint=True,
sampler_type='RandomBalancedSampler',
**kwargs)
print('The number of train data:{}'.format(len(train_loader.dataset)))
args.epochs = 15
train_multi(train_loader, optimizer, model, criterion, L1_criterion, val_loader, itr, \
nature_error_itr_local, nature_error_itr_global)
# start from itr = 1
if len(nature_error_itr_local) > 0:
adv_model_num, adv_model_idx = adv_model_selection(
nature_error_itr_local, threshold, itr)
if adv_model_num < 1:
break
print(nature_error_itr_global)
print(len(nature_error_itr_global) / (args.epochs - args.epochs // 2))
final_model_selection(nature_error_itr_global, threshold)
pn_data_dir = os.path.join(data_root, 'unpairLinear')
# construct negative examples from CG and add into CG
img_des_dir = os.path.join(dst_dir, 'CGG')
image_name = os.listdir(img_des_dir)
all_image_num = len(image_name)
print(all_image_num)
args.dataroot = '/home/wzquan/publicData/NIvsCG/RRVData/natural_validation_dataset'
val_loader = torch.utils.data.DataLoader(
myDataset.MyDataset(
args,
transforms.Compose([
transforms.TenCrop(233),
transforms.Lambda(lambda crops: torch.stack(
[transforms.ToTensor()(crop)
for crop in crops])), # returns a 4D tensor
transforms.Lambda(
lambda crops: torch.stack([normalize(crop) for crop in crops]))
])),
batch_size=args.test_batch_size,
shuffle=False,
**kwargs)
print('The number of val data:{}'.format(len(val_loader.dataset)))
def main():
# instantiate model and initialize weights
model = ENet()
networks.print_network(model)
parser.add_argument(
'--log-interval',
type=int,
default=10,
metavar='N', # 跑多少次batch进行一次日志记录
help='how many batches to wait before logging training status')
args = parser.parse_args() # 这个是使用argparse模块时的必备行，将参数进行关联，详情用法请百度 argparse 即可
args.cuda = not args.no_cuda and torch.cuda.is_available(
) # 这个是在确认是否使用gpu的参数,比如
torch.manual_seed(args.seed) # 设置一个随机数种子，相关理论请自行百度或google，并不是pytorch特有的什么设置
if args.cuda:
torch.cuda.manual_seed(args.seed) # 这个是为GPU设置一个随机数种子
kwargs = {'num_workers': 1, 'pin_memory': True} if args.cuda else {}
train_loader = torch.utils.data.DataLoader(myDataset.MyDataset(train=True),
batch_size=args.batch_size,
shuffle=True,
**kwargs)
test_loader = torch.utils.data.DataLoader(myDataset.MyDataset(train=False),
batch_size=args.batch_size,
shuffle=True,
**kwargs)
class Net(nn.Module):
def __init__(self):
super(Net, self).__init__()
self.conv1 = nn.Conv2d(1, 10, kernel_size=5)
self.conv2 = nn.Conv2d(10, 20, kernel_size=5)
self.conv2_drop = nn.Dropout2d()