def __init__(self, device, model, lr=2e-4, rendering_loss_type='l1',
ssim_loss_weight=0.05):
self.device = device
self.model = model
self.lr = lr
self.rendering_loss_type = rendering_loss_type
self.ssim_loss_weight = ssim_loss_weight
self.use_ssim = self.ssim_loss_weight != 0
# If False doesn't save losses in loss history
self.register_losses = True
# Check if model is multi-gpu
self.multi_gpu = isinstance(self.model, nn.DataParallel)
# Initialize optimizer
self.optimizer = torch.optim.Adam(self.model.parameters(), lr=lr)
# Initialize loss functions
# For rendered images
if self.rendering_loss_type == 'l1':
self.loss_func = nn.L1Loss()
elif self.rendering_loss_type == 'l2':
self.loss_func = nn.MSELoss()
# For SSIM
if self.use_ssim:
self.ssim_loss_func = SSIM(data_range=1.0, size_average=True,
channel=3, nonnegative_ssim=False)
# Loss histories
self.recorded_losses = ["total", "regression", "ssim"]
self.loss_history = {loss_type: [] for loss_type in self.recorded_losses}
self.epoch_loss_history = {loss_type: [] for loss_type in self.recorded_losses}
self.val_loss_history = {loss_type: [] for loss_type in self.recorded_losses}
def ssim_loss(X, Y):
# # X: (N,3,H,W) a batch of non-negative RGB images (0~255)
# # Y: (N,3,H,W)
#
# # calculate ssim & ms-ssim for each image
# ssim_val = ssim(X, Y, data_range=255, size_average=False) # return (N,)
# ms_ssim_val = ms_ssim(X, Y, data_range=255, size_average=False) # (N,)
#
# # set 'size_average=True' to get a scalar value as loss.
# ssim_loss = 1 - ssim(X, Y, data_range=255, size_average=True) # return a scalar
# ms_ssim_loss = 1 - ms_ssim(X, Y, data_range=255, size_average=True)
# reuse the gaussian kernel with SSIM & MS_SSIM.
ssim_module = SSIM(data_range=255,
size_average=True,
channel=1,
nonnegative_ssim=False)
ms_ssim_module = MS_SSIM(data_range=255,
size_average=True,
channel=1,
nonnegative_ssim=False)
ssim_loss = 1 - ssim_module(X, Y)
ms_ssim_loss = 1 - ms_ssim_module(X, Y)
return ms_ssim_loss
class WEIGHTED_SIMILARITY:
def __init__(self, primary_loss="mse", weights=[1.0, 1.0], asImages=True):
self.main_loss = MSE_LOSS(reduction="mean")
if "bce" in primary_loss: self.main_loss = BCE_LOSS(reduction="mean")
self.ssim_loss = SSIM(data_range=1.0, nonnegative_ssim=True)
self.weights = weights
self.asImages = asImages
def transform(self, x):
# Gray Image to 3 channels in images
if self.asImages and x.shape[-3] == 1: x = x.repeat(1, 3, 1, 1)
# Gray frames to 3 channels in video
if not self.asImages and x.shape[-4] == 1: x = x.repeat(1, 3, 1, 1, 1)
# BatchSize x channels x frames x h x w
if self.asImages:
return x
# transpose n_frame and channels for video
else:
return x.transpose(1, 2).flatten(start_dim=0, end_dim=1)
def __call__(self, original, reconstructions):
return (
self.weights[0] * self.main_loss(original, reconstructions)) + (
self.weights[1] * 100 *
(1 - self.ssim_loss.forward(self.transform(original),
self.transform(reconstructions))))
def __init__(self):
super(Loss, self).__init__()
self.l1 = nn.L1Loss()
self.criterion_ssim = SSIM(win_size=11,
win_sigma=1.5,
data_range=1.0,
size_average=True,
channel=3).cuda()
def __init__(self, to_cuda):
self.vgg = VGG19().to(to_cuda).eval()
self.criterion = nn.L1Loss(size_average=True)
self.criterionMSE = nn.MSELoss()
self.ssim_module = SSIM(data_range=1,
size_average=True,
channel=3,
nonnegative_ssim=False)
self.weights = [1.0 / 32, 1.0 / 16, 1.0 / 8, 1.0 / 4, 1.0]
self.flownet = spynet.Network().to(to_cuda).eval()
self.alpha = 50
class WEIGHTED_SIMILARITY:
def __init__(self, primary_loss="mse", weights=[1.0, 1.0]):
self.main_loss = MSE_LOSS(reduction="mean")
if "bce" in primary_loss: self.main_loss = BCE_LOSS(reduction="mean")
self.ssim_loss = SSIM()
self.weights = weights
def __call__(self, original, reconstructions):
return (self.weights[0] * self.main_loss(original, reconstructions)
) + (self.weights[1] * 100 *
(1 - self.ssim_loss.forward(original, reconstructions)))
def __init__(self, opt):
self.ssim_module = SSIM(data_range=255, size_average=True, channel=3)
self.cuda = opt.cuda
self.fid_module = get_inception_model().eval()
if self.cuda:
print("Using CUDA")
self.fid_module = self.fid_module.cuda()
self.lpips_module = PerceptualLoss(use_gpu=self.cuda)
self.fid_features_real = list()
self.fid_features_fake = list()
def __init__(self, hparams):
super(ProbaModel, self).__init__()
self.hparams = hparams
self.batch_size = hparams.batch_size
self.gen = MSRResNet(in_nc=hparams.nc + 2,
out_nc=1,
nf=48,
nb=16,
upscale=3)
self.dis = Discriminator()
self.loss_MSE = torch.nn.MSELoss()
self.loss_ssim = SSIM(win_size=12,
win_sigma=1.5,
data_range=1.,
size_average=True,
channel=1)
path = os.path.join('/local/pajot/data/proba_v', "norm.csv")
self.baseline_cpsnrs = pd.read_csv(
path, ' ', names=['name',
'score']).set_index('name').to_dict()['score']
def __init__(self, weight):
super(DepthLoss, self).__init__()
self.weight = weight
self.l1_loss = nn.L1Loss()
self.SSIM = SSIM()
self.gradient_loss = GradientLoss()
def __init__(self , max_value = 1.0): super(SSIMLoss, self).__init__() self.max_value = max_value self.ssim_fn = SSIM(data_range=max_value, size_average = False, channel = 3)
def tensor_ssim_module():
# reuse the gaussian kernel with SSIM & MS_SSIM.
ssim_module = SSIM(data_range=255, size_average=True, channel=3)
ms_ssim_module = MS_SSIM(data_range=255, size_average=True, channel=3)
def ssim(self):
"""
@return ssim function on normalized image with 3 channels
"""
return SSIM(data_range=1, size_average=True, channel=3)
def __init__(self, **kwargs):
super().__init__()
self.save_hyperparameters()
device = torch.device(
"cuda:0" if torch.cuda.is_available() and self.hparams.cuda else "cpu")
if self.hparams.modelID == 0:
self.net = ResNet(in_channels=self.hparams.in_channels, out_channels=self.hparams.out_channels, res_blocks=self.hparams.model_res_blocks,
starting_nfeatures=self.hparams.model_starting_nfeatures, updown_blocks=self.hparams.model_updown_blocks,
is_relu_leaky=self.hparams.model_relu_leaky, do_batchnorm=self.hparams.model_do_batchnorm,
res_drop_prob=self.hparams.model_drop_prob, is_replicatepad=self.hparams.model_is_replicatepad, out_act=self.hparams.model_out_act, forwardV=self.hparams.model_forwardV,
upinterp_algo=self.hparams.model_upinterp_algo, post_interp_convtrans=self.hparams.model_post_interp_convtrans, is3D=self.hparams.is3D) # TODO think of 2D
# self.net = nn.Conv3d(in_channels=1, out_channels=1, kernel_size=3, stride=1, padding=1)
elif self.hparams.modelID == 2:
self.net = DualSpaceResNet(in_channels=self.hparams.in_channels, out_channels=self.hparams.out_channels, res_blocks=self.hparams.model_res_blocks,
starting_nfeatures=self.hparams.model_starting_nfeatures, updown_blocks=self.hparams.model_updown_blocks,
is_relu_leaky=self.hparams.model_relu_leaky, do_batchnorm=self.hparams.model_do_batchnorm,
res_drop_prob=self.hparams.model_drop_prob, is_replicatepad=self.hparams.model_is_replicatepad, out_act=self.hparams.model_out_act, forwardV=self.hparams.model_forwardV,
upinterp_algo=self.hparams.model_upinterp_algo, post_interp_convtrans=self.hparams.model_post_interp_convtrans, is3D=self.hparams.is3D,
connect_mode=self.hparams.model_dspace_connect_mode, inner_norm_ksp=self.hparams.model_inner_norm_ksp)
elif self.hparams.modelID == 3: #Primal-Dual Network, complex Primal
self.net = PrimalDualNetwork(n_primary=5, n_dual=5, n_iterations=10,
use_original_block = True,
use_original_init = True,
use_complex_primal = True,
g_normtype = "magmax",
transform = "Fourier",
return_abs = True)
elif self.hparams.modelID == 4: #Primal-Dual Network, absolute Primal
self.net = PrimalDualNetwork(n_primary=5, n_dual=5, n_iterations=10,
use_original_block = True,
use_original_init = True,
use_complex_primal = False,
g_normtype = "magmax",
transform = "Fourier")
elif self.hparams.modelID == 5: #Primal-Dual UNet Network, absolute Primal
self.net = PrimalDualNetwork(n_primary=4, n_dual=5, n_iterations=2,
use_original_block = False,
use_original_init = False,
use_complex_primal = False,
g_normtype = "magmax",
transform = "Fourier")
elif self.hparams.modelID == 6: #Primal-Dual Network v2 (no residual), complex Primal
self.net = PrimalDualNetworkNoResidue(n_primary=5, n_dual=5, n_iterations=10,
use_original_block = True,
use_original_init = True,
use_complex_primal = True,
residuals=False,
g_normtype = "magmax",
transform = "Fourier",
return_abs = True)
else:
# TODO: other models
sys.exit("Only ReconResNet and DualSpaceResNet have been implemented so far in ReconEngine")
if bool(self.hparams.preweights_path):
print("Pre-weights found, loding...")
chk = torch.load(self.hparams.preweights_path, map_location='cpu')
self.net.load_state_dict(chk['state_dict'])
if self.hparams.lossID == 0:
if self.hparams.in_channels != 1 or self.hparams.out_channels != 1:
sys.exit(
"Perceptual Loss used here only works for 1 channel input and output")
self.loss = PerceptualLoss(device=device, loss_model="unet3Dds", resize=None,
loss_type=self.hparams.ploss_type, n_level=self.hparams.ploss_level) # TODO thinkof 2D
elif self.hparams.lossID == 1:
self.loss = nn.L1Loss(reduction='mean')
elif self.hparams.lossID == 2:
self.loss = MS_SSIM(channel=self.hparams.out_channels, data_range=1, spatial_dims=3 if self.hparams.is3D else 2, nonnegative_ssim=False).to(device)
elif self.hparams.lossID == 3:
self.loss = SSIM(channel=self.hparams.out_channels, data_range=1, spatial_dims=3 if self.hparams.is3D else 2, nonnegative_ssim=False).to(device)
else:
sys.exit("Invalid Loss ID")
self.dataspace = DataSpaceHandler(**self.hparams)
if self.hparams.ds_mode == 0:
trans = tioTransforms
augs = tioAugmentations
elif self.hparams.ds_mode == 1:
trans = pytTransforms
augs = pytAugmentations
# TODO parameterised everything
self.init_transforms = []
self.aug_transforms = []
self.transforms = []
if self.hparams.ds_mode == 0 and self.hparams.cannonicalResample: # Only applicable for TorchIO
self.init_transforms += [tio.ToCanonical(), tio.Resample('gt')]
if self.hparams.ds_mode == 0 and self.hparams.forceNormAffine: # Only applicable for TorchIO
self.init_transforms += [trans.ForceAffine()]
if self.hparams.croppad and self.hparams.ds_mode == 1:
self.init_transforms += [
trans.CropOrPad(size=self.hparams.input_shape)]
self.init_transforms += [trans.IntensityNorm(type=self.hparams.norm_type, return_meta=self.hparams.motion_return_meta)]
# dataspace_transforms = self.dataspace.getTransforms() #TODO: dataspace transforms are not in use
# self.init_transforms += dataspace_transforms
if bool(self.hparams.random_crop) and self.hparams.ds_mode == 1:
self.aug_transforms += [augs.RandomCrop(
size=self.hparams.random_crop, p=self.hparams.p_random_crop)]
if self.hparams.p_contrast_augment > 0:
self.aug_transforms += [augs.getContrastAugs(
p=self.hparams.p_contrast_augment)]
# if the task if MoCo and pre-corrupted vols are not supplied
if self.hparams.taskID == 1 and not bool(self.hparams.train_path_inp):
if self.hparams.motion_mode == 0 and self.hparams.ds_mode == 0:
motion_params = {k.split('motionmg_')[
1]: v for k, v in self.hparams.items() if k.startswith('motionmg')}
self.transforms += [tioMotion.RandomMotionGhostingFast(
**motion_params), trans.IntensityNorm()]
elif self.hparams.motion_mode == 1 and self.hparams.ds_mode == 1 and not self.hparams.is3D:
self.transforms += [pytMotion.Motion2Dv0(
sigma_range=self.hparams.motion_sigma_range, n_threads=self.hparams.motion_n_threads, p=self.hparams.motion_p, return_meta=self.hparams.motion_return_meta)]
elif self.hparams.motion_mode == 2 and self.hparams.ds_mode == 1 and not self.hparams.is3D:
self.transforms += [pytMotion.Motion2Dv1(sigma_range=self.hparams.motion_sigma_range, n_threads=self.hparams.motion_n_threads,
restore_original=self.hparams.motion_restore_original, p=self.hparams.motion_p, return_meta=self.hparams.motion_return_meta)]
else:
sys.exit(
"Error: invalid motion_mode, ds_mode, is3D combo. Please double check!")
self.static_metamat = sio.loadmat(self.hparams.static_metamat_file) if bool(
self.hparams.static_metamat_file) else None
if self.hparams.taskID == 0 and self.hparams.use_datacon:
self.datacon = DataConsistency(
isRadial=self.hparams.is_radial, metadict=self.static_metamat)
else:
self.datacon = None
input_shape = self.hparams.input_shape if self.hparams.is3D else self.hparams.input_shape[
:-1]
self.example_input_array = torch.empty(
self.hparams.batch_size, self.hparams.in_channels, *input_shape).float()
self.saver = ResSaver(
self.hparams.res_path, save_inp=self.hparams.save_inp, do_norm=self.hparams.do_savenorm)
'normal',
0.02,
gpu_id=device)
# VGG for perceptual loss
if opt.lamb_content > 0:
vgg = Vgg16()
init_vgg16(root_path)
vgg.load_state_dict(torch.load(os.path.join(root_path, "vgg16.weight")))
vgg.to(device)
# define loss
criterionL1 = nn.L1Loss().to(device)
criterionL2 = nn.MSELoss().to(device)
criterionMSE = nn.MSELoss().to(device)
criterionSSIM = SSIM(data_range=255, size_average=True, channel=3)
criterionMSSSIM1 = MS_SSIM(data_range=255, size_average=True, channel=1)
criterionMSSSIM3 = MS_SSIM(data_range=255, size_average=True, channel=3)
# setup optimizer
optimizer_i = optim.Adam(net_i.parameters(),
lr=opt.lr,
betas=(opt.beta1, 0.999))
optimizer_r = optim.Adam(net_r.parameters(),
lr=opt.lr,
betas=(opt.beta1, 0.999))
net_i_scheduler = get_scheduler(optimizer_i, opt)
net_r_scheduler = get_scheduler(optimizer_r, opt)
loss_i_list = []
loss_r_list = []
def l1loss(x, y):
return torch.nn.functional.l1_loss(x, y, reduction='mean')
def l2loss(x, y):
return torch.pow(x - y, 2).mean()
def psnr(x: torch.Tensor, y: torch.Tensor) -> torch.Tensor:
return (10 * torch.log10(x.shape[-2] * x.shape[-1] /
(x - y).pow(2).sum(dim=(2, 3)))).mean(dim=1)
ssim = SSIM(data_range=1.0)
msssim = MSSSIM(data_range=1.0)
def gaussian(x, sigma=1.0):
return np.exp(-(x**2) / (2 * (sigma**2)))
def build_gauss_kernel(size=5, sigma=1.0, n_channels=1, device=None):
"""Construct the convolution kernel for a gaussian blur
See https://en.wikipedia.org/wiki/Gaussian_blur for a definition.
Overall I first generate a NxNx2 matrix of indices, and then use those to
calculate the gaussian function on each element. The two dimensional
Gaussian function is then the product along axis=2.
Also, in_channels == out_channels == n_channels
"""
# Identity loss
idt_B = decoder(encoder(real_B))
loss_idt = criterion_l1(idt_B,real_B)*5
# GAN feature matching loss
# loss_feat = 0
# for j in range(len(pred_fake[0])-1):
# loss_feat += criterion_feat(pred_fake[0][j], pred_real[0][j].detach())*1
# VGG feature matching loss
loss_VGG = criterion_VGG(fake_B,real_A)*10
##ssimloss
ssim_module = SSIM(data_range=1, size_average=True, channel=3)
X1 = (real_A + 1)*0.5 # [-1, 1] => [0, 1]
Y1 = (fake_B + 1)*0.5
ssim_A = (1 - ssim_module(X1, Y1))
# Total loss
loss = loss_G + loss_feature + loss_idt + ssim_A
loss.backward()
optimizer_encoder.step()
optimizer_decoder.step()
###################################
def __init__(self, alpha=0.84, kernel_w=3, sigma=1.5, channels=1):
super.__init__()
self.alpha = alpha
self.kernel_w = kernel_w
self.ssim_d = SSIM(win_size=kernel_w, win_sigma=sigma, data_range=1.0, size_average=False, channel=channels)
self.config = {'Distance' : 'L1 + SSIM', 'alpha': alpha, 'win_size': kernel_w, 'win_sigma': sigma}
]
}
})
to_tensor = ToTensor()
def to_pilimagelab(pic):
pic = pic.mul(255).byte()
nppic = np.transpose(pic.numpy(), (1, 2, 0))
return PIL.Image.fromarray(nppic, mode='LAB')
invcielab = InvCIELABTransform()
ssim = SSIM(win_size=11,
win_sigma=1.5,
data_range=255,
size_average=True,
channel=3)
cur_time = time.time()
log_time = cur_time
checkpoint_time = cur_time
backup_time = cur_time
print('Training')
eval_iter = iter(eval_loader)
while True:
epoch_start = time.time()
torch.manual_seed(epoch_start)
import csv
import os
import matplotlib.pyplot as plt
import torch
from torch.autograd import Variable
from torchvision.utils import save_image
import torch.nn.functional as F
from pytorch_msssim import ssim, ms_ssim, SSIM, MS_SSIM
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
Tensor = torch.cuda.FloatTensor if torch.cuda.is_available() else torch.Tensor
ssim_fn_vgg = SSIM(data_range=1.0, size_average=False, channel=512)
def write_to_csv_file(filename, content):
with open(filename, 'a+') as f:
file_writer = csv.writer(f)
file_writer.writerow(content)
def get_image(input_tensor):
return input_tensor.clamp(0, 1).permute(1, 2, 0).cpu().numpy()
@torch.no_grad()
def test(epoch, generator, dataloader):
psnr_val = 0
def main(self):
dataset_class = self.datasets[self.args.dataset](
root=self.args.root,
add_labeled=self.args.add_labeled,
advanced_transforms=True,
merged=self.args.merged,
remove_classes=self.args.remove_classes,
oversampling=self.args.oversampling,
unlabeled_subset_ratio=self.args.unlabeled_subset,
seed=self.args.seed,
start_labeled=self.args.start_labeled)
_, labeled_dataset, unlabeled_dataset, labeled_indices, unlabeled_indices, test_dataset = \
dataset_class.get_dataset()
labeled_loader, unlabeled_loader, val_loader = create_loaders(
self.args, labeled_dataset, unlabeled_dataset, test_dataset,
labeled_indices, unlabeled_indices, self.kwargs,
dataset_class.unlabeled_subset_num)
base_dataset = dataset_class.get_base_dataset_autoencoder()
base_loader = create_base_loader(base_dataset, self.kwargs,
self.args.batch_size)
reconstruction_loss_log = []
bce_loss = nn.BCELoss().cuda()
l1_loss = nn.L1Loss()
l2_loss = nn.MSELoss()
ssim_loss = SSIM(size_average=True,
data_range=1.0,
nonnegative_ssim=True)
criterions_reconstruction = {
'bce': bce_loss,
'l1': l1_loss,
'l2': l2_loss,
'ssim': ssim_loss
}
criterion_cl = get_loss(self.args,
dataset_class.labeled_class_samples,
reduction='none')
model, optimizer, self.args = create_model_optimizer_autoencoder(
self.args, dataset_class)
best_loss = np.inf
metrics_per_cycle = pd.DataFrame([])
metrics_per_epoch = pd.DataFrame([])
num_class_per_cycle = pd.DataFrame([])
best_recall, best_report, last_best_epochs = 0, None, 0
best_model = deepcopy(model)
self.args.start_epoch = 0
self.args.weak_supervision_strategy = "random_sampling"
current_labeled = dataset_class.start_labeled
for epoch in range(self.args.start_epoch, self.args.epochs):
cl_train_loss, losses_avg_reconstruction, losses_reconstruction = \
self.train(labeled_loader, model, criterion_cl, optimizer, last_best_epochs, epoch,
criterions_reconstruction, base_loader)
val_loss, val_report = self.validate(val_loader, model,
last_best_epochs,
criterion_cl)
reconstruction_loss_log.append(losses_avg_reconstruction.tolist())
best_loss = min(best_loss, losses_reconstruction.avg)
is_best = val_report['macro avg']['recall'] > best_recall
last_best_epochs = 0 if is_best else last_best_epochs + 1
val_report = pd.concat([val_report, cl_train_loss, val_loss],
axis=1)
metrics_per_epoch = pd.concat([metrics_per_epoch, val_report])
if epoch > self.args.labeled_warmup_epochs and last_best_epochs > self.args.add_labeled_epochs:
metrics_per_cycle = pd.concat([metrics_per_cycle, best_report])
labeled_loader, unlabeled_loader, val_loader, labeled_indices, unlabeled_indices = \
perform_sampling(self.args, None, None,
epoch, model, labeled_loader, unlabeled_loader,
dataset_class, labeled_indices,
unlabeled_indices, labeled_dataset,
unlabeled_dataset,
test_dataset, self.kwargs, current_labeled,
model)
current_labeled += self.args.add_labeled
last_best_epochs = 0
if self.args.reset_model:
model, optimizer, self.args = create_model_optimizer_autoencoder(
self.args, dataset_class)
if self.args.novel_class_detection:
num_classes = [
np.sum(
np.array(base_dataset.targets)[labeled_indices] ==
i) for i in range(len(base_dataset.classes))
]
num_class_per_cycle = pd.concat([
num_class_per_cycle,
pd.DataFrame.from_dict(
{
cls: num_classes[i]
for i, cls in enumerate(base_dataset.classes)
},
orient='index').T
])
criterion_cl = get_loss(self.args,
dataset_class.labeled_class_samples,
reduction='none')
else:
best_recall = val_report['macro avg'][
'recall'] if is_best else best_recall
best_report = val_report if is_best else best_report
best_model = deepcopy(model) if is_best else best_model
if current_labeled > self.args.stop_labeled:
break
save_checkpoint(
self.args, {
'epoch': epoch + 1,
'state_dict': model.state_dict(),
'best_prec1': best_recall,
}, is_best)
if self.args.store_logs:
store_logs(self.args,
pd.DataFrame(reconstruction_loss_log,
columns=['bce', 'l1', 'l2', 'ssim']),
log_type='ae_loss')
store_logs(self.args, metrics_per_cycle)
store_logs(self.args, metrics_per_epoch, log_type='epoch_wise')
store_logs(self.args, num_class_per_cycle, log_type='novel_class')
self.model = model
return model
# hbao = np.expand_dims(np.expand_dims(hbao, 0), axis=0)
# nnao = np.expand_dims(np.expand_dims(nnao, 0), axis=0)
# deepshading = np.expand_dims(np.expand_dims(deepshading, 0), axis=0)
vao = np.expand_dims(np.expand_dims(vao, 0), axis=0)
gt = torch.from_numpy(gt).cuda()
ours = torch.from_numpy(ours).cuda()
# hbao = torch.from_numpy(hbao).cuda()
# nnao = torch.from_numpy(nnao).cuda()
# deepshading = torch.from_numpy(deepshading).cuda()
vao = torch.from_numpy(vao).cuda()
# ssim_hbao = SSIM(win_size=11, win_sigma=1.5, data_range=1.0, size_average=True, channel=1)(gt, hbao).item()
ssim_ours = SSIM(win_size=11,
win_sigma=1.5,
data_range=1.0,
size_average=True,
channel=1)(gt, ours).item()
# ssim_nnao = SSIM(win_size=11, win_sigma=1.5, data_range=1.0, size_average=True, channel=1)(gt, nnao).item()
# ssim_deepshading = SSIM(win_size=11, win_sigma=1.5, data_range=1.0, size_average=True, channel=1)(gt, deepshading).item()
ssim_vao = SSIM(win_size=11,
win_sigma=1.5,
data_range=1.0,
size_average=True,
channel=1)(gt, vao).item()
print(ssim_ours, ssim_vao)
# mse_hbao = torch.nn.L1Loss()(gt, hbao).item()
mse_ours = torch.nn.L1Loss()(gt, ours).item()
# mse_nnao = torch.nn.L1Loss()(gt, nnao).item()
# mse_deepshading = torch.nn.L1Loss()(gt, deepshading).item()
def ssim_fn_val(sr , hr , max_value = 255): return SSIM(data_range = max_value, size_average= False, channel = 3)(sr,hr)
img1 = torch.from_numpy(npImg1).float().unsqueeze(0).unsqueeze(0) / 255.0
img2 = torch.rand(img1.size())
if torch.cuda.is_available():
img1 = img1.cuda()
img2 = img2.cuda()
img1 = Variable(img1, requires_grad=False)
img2 = Variable(img2, requires_grad=True)
ssim_value = ssim(img1, img2).item()
print("Initial ssim:", ssim_value)
ssim_loss = SSIM(win_size=11,
win_sigma=1.5,
data_range=1,
size_average=True,
channels=1)
optimizer = optim.Adam([img2], lr=0.01)
while ssim_value < 0.9999:
optimizer.zero_grad()
_ssim_loss = 1 - ssim_loss(img1, img2)
_ssim_loss.backward()
optimizer.step()
ssim_value = ssim(img1, img2).item()
print(ssim_value)
img2_ = (img2 * 255.0).squeeze()
def __init__(self, primary_loss="mse", weights=[1.0, 1.0], asImages=True):
self.main_loss = MSE_LOSS(reduction="mean")
if "bce" in primary_loss: self.main_loss = BCE_LOSS(reduction="mean")
self.ssim_loss = SSIM(data_range=1.0, nonnegative_ssim=True)
self.weights = weights
self.asImages = asImages
def __init__(self, primary_loss="mse", weights=[1.0, 1.0]):
self.main_loss = MSE_LOSS(reduction="mean")
if "bce" in primary_loss: self.main_loss = BCE_LOSS(reduction="mean")
self.ssim_loss = SSIM()
self.weights = weights
def __init__(self, args, ckp):
super(Loss, self).__init__()
print('Preparing loss function:')
self.n_GPUs = args.n_GPUs
self.loss = []
self.loss_module = nn.ModuleList()
for loss in args.loss.split('+'):
weight, loss_type = loss.split('*')
if loss_type == 'MSE': # L2 loss
loss_function = nn.MSELoss()
elif loss_type == 'L1':
loss_function = nn.L1Loss()
elif loss_type.find('VGG') >= 0:
module = import_module('loss.vgg')
loss_function = getattr(module,
'VGG')(loss_type[3:],
rgb_range=args.rgb_range)
elif loss_type.find('TextureL') >= 0:
module = import_module('loss.vgg')
loss_function = getattr(module,
'VGG')(loss_type[3:],
rgb_range=args.rgb_range,
texture_loss=True)
elif loss_type.find('GAN') >= 0:
module = import_module('loss.adversarial')
loss_function = getattr(module, 'Adversarial')(args, loss_type)
elif loss_type.find('TVLoss') >= 0:
module = import_module('loss.tvloss')
loss_function = getattr(module, 'TVLoss')()
elif loss_type.find('SSIM') >= 0:
from pytorch_msssim import SSIM
loss_function = SSIM(win_size=7,
win_sigma=1,
data_range=args.rgb_range,
size_average=True,
channel=3)
elif loss_type.find('MS-SSIM') >= 0:
from pytorch_msssim import MS_SSIM
loss_function = MS_SSIM(win_sigma=1,
data_range=args.rgb_range,
size_average=True,
channel=3)
self.loss.append({
'type': loss_type,
'weight': float(weight),
'function': loss_function
})
if loss_type.find('GAN') >= 0:
self.loss.append({
'type': 'DIS',
'weight': 1,
'function': None
})
if len(self.loss) > 1:
self.loss.append({'type': 'Total', 'weight': 0, 'function': None})
for l in self.loss:
if l['function'] is not None:
print('{:.6f} * {}'.format(l['weight'], l['type']))
self.loss_module.append(l['function'])
self.log = torch.Tensor()
device = torch.device('cpu' if args.cpu else 'cuda')
self.loss_module.to(device)
if args.precision == 'half': self.loss_module.half()
if not args.cpu and args.n_GPUs > 1:
self.loss_module = nn.DataParallel(self.loss_module,
range(args.n_GPUs))
if args.load != '': self.load(ckp.dir, cpu=args.cpu)
def __init__(self):
super(MSSSIM, self).__init__()
self.ssim = SSIM(data_range=1, size_average=True, channel=3)
from pytorch_msssim import ssim, ms_ssim, SSIM, MS_SSIM
from torch.autograd import Variable
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
Tensor = torch.cuda.FloatTensor if torch.cuda.is_available() else torch.Tensor
def psnr_fn(sr , hr , max_value = 1.):
mse = torch.mean((sr - hr)**2 , axis = (1,2,3))
return 20 * torch.log10(max_value / torch.sqrt(mse))
def mse_fn(sr , hr):
return torch.mean((sr-hr)**2 , axis = (1,2,3))
ssim_fn = SSIM(data_range = 1.0, size_average= False, channel = 3)
def ssim_fn_val(sr , hr , max_value = 255):
return SSIM(data_range = max_value, size_average= False, channel = 3)(sr,hr)
# def get_loss_fn(loss_type , args = None):
# if loss_type == 'L1':
# return nn.L1Loss()
# if loss_type == 'MSE':
# return nn.MSELoss()
# if loss_type == 'PSNR':
# return psnr.PSNR()
# if loss_type == 'SSIM':
# return SSIM(data_range=1.0, size_average = False, channel = 3)
# if loss_type == 'GAN':
# return GAN.GAN(args)
import torch
# X: (N,3,H,W) a batch of RGB images (0~255)
# Y: (N,3,H,W)
X = torch.rand(4, 3, 512, 512)
Y = torch.rand(4, 3, 512, 512)
#Y = X
# ssim_val = ssim( X, Y, data_range=1.0, size_average=False) # return (N,)
# ms_ssim_val = ms_ssim( X, Y, data_range=1.0, size_average=False ) #(N,)
# # or set 'size_average=True' to get a scalar value as loss.
# ssim_loss = ssim( X, Y, data_range=1.0, size_average=True) # return a scalar
# ms_ssim_loss = ms_ssim( X, Y, data_range=1.0, size_average=True )
# or reuse windows with SSIM & MS_SSIM.
ssim_module = SSIM(win_size=11,
win_sigma=1.5,
data_range=1.0,
size_average=True,
channel=3)
ms_ssim_module = MS_SSIM(win_size=11,
win_sigma=1.5,
data_range=1.0,
size_average=True,
channel=3)
ssim_loss = 1 - ssim_module(X, Y)
ms_ssim_loss = 1 - ms_ssim_module(X, Y)
X = torch.rand(4, 3, 512, 512)
Y = torch.rand(4, 3, 512, 512)
params = sum([np.prod(p.size()) for p in net.parameters()])
# Normalization statistics
stats = {'norm_type':args.norm_type, 'norm_type_img':args.norm_type, 'mean_imgs':mean_imgs, 'std_images':std_images, 'max_images':max_images,
'mean_vols':mean_vols, 'std_vols':std_vols, 'max_vols':max_volumes}
# Create loss function and optimizer
loss = nn.MSELoss()
if args.use_img_loss>0:
loss_img = nn.MSELoss()
# reuse the gaussian kernel with SSIM & MS_SSIM.
ssim_module = SSIM(data_range=1, size_average=True, channel=n_lenslets).to(device_repro)
optimizer = torch.optim.Adam(trainable_params, lr=args.learning_rate)
# timers
start = torch.cuda.Event(enable_timing=True)
end = torch.cuda.Event(enable_timing=True)
# create gradient scaler for mixed precision training
scaler = GradScaler()
start_epoch = 0
if len(args.checkpoint_XLFMNet)>0:
net.load_state_dict(checkpoint_XLFMNet['model_state_dict'], strict=False)
optimizer.load_state_dict(checkpoint_XLFMNet['optimizer_state_dict'])
start_epoch = checkpoint_XLFMNet['epoch']-1
