class Ganomaly(object):
"""GANomaly Class
"""
@staticmethod
def name():
"""Return name of the class.
"""
return 'Ganomaly'
def __init__(self, opt, dataloader=None):
super(Ganomaly, self).__init__()
##
# Initalize variables.
self.opt = opt
self.visualizer = Visualizer(opt)
self.dataloader = dataloader
self.trn_dir = os.path.join(self.opt.outf, self.opt.name, 'train')
self.tst_dir = os.path.join(self.opt.outf, self.opt.name, 'test')
self.device = torch.device(
"cuda:0" if self.opt.device != 'cpu' else "cpu")
# -- Discriminator attributes.
self.out_d_real = None
self.feat_real = None
self.err_d_real = None
self.fake = None
self.latent_i = None
self.latent_o = None
self.out_d_fake = None
self.feat_fake = None
self.err_d_fake = None
self.err_d = None
# -- Generator attributes.
self.out_g = None
self.err_g_bce = None
self.err_g_l1l = None
self.err_g_enc = None
self.err_g = None
# -- Misc attributes
self.epoch = 0
self.times = []
self.total_steps = 0
##
# Create and initialize networks.
self.netg = NetG(self.opt).to(self.device)
self.netd = NetD(self.opt).to(self.device)
self.netg.apply(weights_init)
self.netd.apply(weights_init)
##
if self.opt.resume != '':
print("\nLoading pre-trained networks.")
self.opt.iter = torch.load(
os.path.join(self.opt.resume, 'netG.pth'))['epoch']
self.netg.load_state_dict(
torch.load(os.path.join(self.opt.resume,
'netG.pth'))['state_dict'])
self.netd.load_state_dict(
torch.load(os.path.join(self.opt.resume,
'netD.pth'))['state_dict'])
print("\tDone.\n")
# print(self.netg)
# print(self.netd)
##
# Loss Functions
self.bce_criterion = nn.BCELoss()
self.l1l_criterion = nn.L1Loss()
self.l2l_criterion = l2_loss
##
# Initialize input tensors.
self.input = torch.empty(size=(self.opt.batchsize, 3, self.opt.isize,
self.opt.isize),
dtype=torch.float32,
device=self.device)
self.label = torch.empty(size=(self.opt.batchsize, ),
dtype=torch.float32,
device=self.device)
self.gt = torch.empty(size=(opt.batchsize, ),
dtype=torch.long,
device=self.device)
self.fixed_input = torch.empty(size=(self.opt.batchsize, 3,
self.opt.isize, self.opt.isize),
dtype=torch.float32,
device=self.device)
self.real_label = 1
self.fake_label = 0
##
# Setup optimizer
if self.opt.isTrain:
self.netg.train()
self.netd.train()
self.optimizer_d = optim.Adam(self.netd.parameters(),
lr=self.opt.lr,
betas=(self.opt.beta1, 0.999))
self.optimizer_g = optim.Adam(self.netg.parameters(),
lr=self.opt.lr,
betas=(self.opt.beta1, 0.999))
##
def set_input(self, input):
""" Set input and ground truth
Args:
input (FloatTensor): Input data for batch i.
"""
with torch.no_grad():
self.input.resize_(input[0].size()).copy_(input[0])
self.gt.resize_(input[1].size()).copy_(input[1])
# Copy the first batch as the fixed input.
if self.total_steps == self.opt.batchsize:
with torch.no_grad():
self.fixed_input.resize_(input[0].size()).copy_(input[0])
##
def update_netd(self):
"""
Update D network: Ladv = |f(real) - f(fake)|_2
"""
##
# Feature Matching.
self.netd.zero_grad()
# --
# Train with real
with torch.no_grad():
self.label.resize_(self.opt.batchsize).fill_(self.real_label)
self.out_d_real, self.feat_real = self.netd(self.input)
# --
# Train with fake
with torch.no_grad():
self.label.resize_(self.opt.batchsize).fill_(self.fake_label)
self.fake, self.latent_i, self.latent_o = self.netg(self.input)
self.out_d_fake, self.feat_fake = self.netd(self.fake.detach())
# --
self.err_d = l2_loss(self.feat_real, self.feat_fake)
self.err_d_real = self.err_d
self.err_d_fake = self.err_d
self.err_d.backward()
self.optimizer_d.step()
##
def reinitialize_netd(self):
""" Initialize the weights of netD
"""
self.netd.apply(weights_init)
print('Reloading d net')
##
def update_netg(self):
"""
# ============================================================ #
# (2) Update G network: log(D(G(x))) + ||G(x) - x|| #
# ============================================================ #
"""
self.netg.zero_grad()
with torch.no_grad():
self.label.resize_(self.opt.batchsize).fill_(self.real_label)
self.out_g, _ = self.netd(self.fake)
self.err_g_bce = self.bce_criterion(self.out_g, self.label)
self.err_g_l1l = self.l1l_criterion(
self.fake, self.input) # constrain x' to look like x
self.err_g_enc = self.l2l_criterion(self.latent_o, self.latent_i)
self.err_g = self.err_g_bce * self.opt.w_bce + self.err_g_l1l * self.opt.w_rec + self.err_g_enc * self.opt.w_enc
self.err_g.backward(retain_graph=True)
self.optimizer_g.step()
##
def optimize(self):
""" Optimize netD and netG networks.
"""
self.update_netd()
self.update_netg()
# If D loss is zero, then re-initialize netD
if self.err_d_real.item() < 1e-5 or self.err_d_fake.item() < 1e-5:
self.reinitialize_netd()
##
def get_errors(self):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
errors = OrderedDict([('err_d', self.err_d.item()),
('err_g', self.err_g.item()),
('err_d_real', self.err_d_real.item()),
('err_d_fake', self.err_d_fake.item()),
('err_g_bce', self.err_g_bce.item()),
('err_g_l1l', self.err_g_l1l.item()),
('err_g_enc', self.err_g_enc.item())])
return errors
##
def get_current_images(self):
""" Returns current images.
Returns:
[reals, fakes, fixed]
"""
reals = self.input.data
fakes = self.fake.data
fixed = self.netg(self.fixed_input)[0].data
return reals, fakes, fixed
##
def save_weights(self, epoch):
"""Save netG and netD weights for the current epoch.
Args:
epoch ([int]): Current epoch number.
"""
weight_dir = os.path.join(self.opt.outf, self.opt.name, 'train',
'weights')
if not os.path.exists(weight_dir):
os.makedirs(weight_dir)
torch.save({
'epoch': epoch + 1,
'state_dict': self.netg.state_dict()
}, '%s/netG.pth' % (weight_dir))
torch.save({
'epoch': epoch + 1,
'state_dict': self.netd.state_dict()
}, '%s/netD.pth' % (weight_dir))
##
def train_epoch(self):
""" Train the model for one epoch.
"""
self.netg.train()
epoch_iter = 0
for data in tqdm(self.dataloader['train'],
leave=False,
total=len(self.dataloader['train'])):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.set_input(data)
self.optimize()
if self.total_steps % self.opt.print_freq == 0:
errors = self.get_errors()
if self.opt.display:
counter_ratio = float(epoch_iter) / len(
self.dataloader['train'].dataset)
self.visualizer.plot_current_errors(
self.epoch, counter_ratio, errors)
if self.total_steps % self.opt.save_image_freq == 0:
reals, fakes, fixed = self.get_current_images()
self.visualizer.save_current_images(self.epoch, reals, fakes,
fixed)
if self.opt.display:
self.visualizer.display_current_images(reals, fakes, fixed)
print(">> Training model %s. Epoch %d/%d" %
(self.name(), self.epoch + 1, self.opt.niter))
# self.visualizer.print_current_errors(self.epoch, errors)
##
def train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best_auc = 0
# Train for niter epochs.
print(">> Training model %s." % self.name())
for self.epoch in range(self.opt.iter, self.opt.niter):
# Train for one epoch
self.train_epoch()
res = self.test()
if res['AUC'] > best_auc:
best_auc = res['AUC']
self.save_weights(self.epoch)
self.visualizer.print_current_performance(res, best_auc)
print(">> Training model %s.[Done]" % self.name())
##
def test(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/netG.pth".format(
self.name().lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.netg.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netG weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.float32,
device=self.device)
self.gt_labels = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.long,
device=self.device)
self.latent_i = torch.zeros(size=(len(
self.dataloader['test'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
self.latent_o = torch.zeros(size=(len(
self.dataloader['test'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
# print(" Testing model %s." % self.name())
self.times = []
self.total_steps = 0
epoch_iter = 0
for i, data in enumerate(self.dataloader['test'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
self.fake, latent_i, latent_o = self.netg(self.input)
error = torch.mean(torch.pow((latent_i - latent_o), 2), dim=1)
time_o = time.time()
self.an_scores[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = self.gt.reshape(error.size(0))
self.latent_i[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_i.reshape(
error.size(0), self.opt.nz)
self.latent_o[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_o.reshape(
error.size(0), self.opt.nz)
self.times.append(time_o - time_i)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test',
'images')
if not os.path.isdir(dst):
os.makedirs(dst)
real, fake, _ = self.get_current_images()
vutils.save_image(real,
'%s/real_%03d.eps' % (dst, i + 1),
normalize=True)
vutils.save_image(fake,
'%s/fake_%03d.eps' % (dst, i + 1),
normalize=True)
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# Scale error vector between [0, 1]
self.an_scores = (self.an_scores - torch.min(self.an_scores)) / (
torch.max(self.an_scores) - torch.min(self.an_scores))
# auc, eer = roc(self.gt_labels, self.an_scores)
auc = evaluate(self.gt_labels,
self.an_scores,
metric=self.opt.metric)
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times),
('AUC', auc)])
if self.opt.display_id > 0 and self.opt.phase == 'test':
counter_ratio = float(epoch_iter) / len(
self.dataloader['test'].dataset)
self.visualizer.plot_performance(self.epoch, counter_ratio,
performance)
return performance
class BaseModel():
""" Base Model for ganomaly
"""
def __init__(self, opt, dataloader):
##
# Seed for deterministic behavior
self.seed(opt.manualseed)
# Initalize variables.
self.opt = opt
self.visualizer = Visualizer(opt)
self.dataloader = dataloader
self.trn_dir = os.path.join(self.opt.outf, self.opt.name, 'train')
self.tst_dir = os.path.join(self.opt.outf, self.opt.name, 'test')
self.device = torch.device("cuda:0" if self.opt.device != 'cpu' else "cpu")
##
def set_input(self, input:torch.Tensor):
""" Set input and ground truth
Args:
input (FloatTensor): Input data for batch i.
"""
with torch.no_grad():
self.input.resize_(input[0].size()).copy_(input[0])
self.gt.resize_(input[1].size()).copy_(input[1])
self.label.resize_(input[1].size())
# Copy the first batch as the fixed input.
if self.total_steps == self.opt.batchsize:
self.fixed_input.resize_(input[0].size()).copy_(input[0])
##
def seed(self, seed_value):
""" Seed
Arguments:
seed_value {int} -- [description]
"""
# Check if seed is default value
if seed_value == -1:
return
# Otherwise seed all functionality
import random
random.seed(seed_value)
torch.manual_seed(seed_value)
torch.cuda.manual_seed_all(seed_value)
np.random.seed(seed_value)
torch.backends.cudnn.deterministic = True
##
def get_errors(self):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
errors = OrderedDict([
('err_d', self.err_d.item()),
('err_g', self.err_g.item()),
('err_g_adv', self.err_g_adv.item()),
('err_g_con', self.err_g_con.item()),
('err_g_enc', self.err_g_enc.item())])
return errors
##
def get_current_images(self):
""" Returns current images.
Returns:
[reals, fakes, fixed]
"""
reals = self.input.data
fakes = self.fake.data
fixed = self.netg(self.fixed_input)[0].data
return reals, fakes, fixed
##
def save_weights(self, epoch):
"""Save netG and netD weights for the current epoch.
Args:
epoch ([int]): Current epoch number.
"""
weight_dir = os.path.join(self.opt.outf, self.opt.name, 'train', 'weights')
if not os.path.exists(weight_dir): os.makedirs(weight_dir)
torch.save({'epoch': epoch + 1, 'state_dict': self.netg.state_dict()},
'%s/netG.pth' % (weight_dir))
torch.save({'epoch': epoch + 1, 'state_dict': self.netd.state_dict()},
'%s/netD.pth' % (weight_dir))
##
def train_one_epoch(self):
""" Train the model for one epoch.
"""
self.netg.train()
epoch_iter = 0
for data in tqdm(self.dataloader['train'], leave=False, total=len(self.dataloader['train'])):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.set_input(data)
# self.optimize()
self.optimize_params()
if self.total_steps % self.opt.print_freq == 0:
errors = self.get_errors()
if self.opt.display:
counter_ratio = float(epoch_iter) / len(self.dataloader['train'].dataset)
self.visualizer.plot_current_errors(self.epoch, counter_ratio, errors)
if self.total_steps % self.opt.save_image_freq == 0:
reals, fakes, fixed = self.get_current_images()
self.visualizer.save_current_images(self.epoch, reals, fakes, fixed)
if self.opt.display:
self.visualizer.display_current_images(reals, fakes, fixed)
print(">> Training model %s. Epoch %d/%d" % (self.name, self.epoch+1, self.opt.niter))
# self.visualizer.print_current_errors(self.epoch, errors)
##
def train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best_auc = 0
# Train for niter epochs.
print(">> Training model %s." % self.name)
for self.epoch in range(self.opt.iter, self.opt.niter):
# Train for one epoch
self.train_one_epoch()
res = self.test()
if res['AUC'] > best_auc:
best_auc = res['AUC']
self.save_weights(self.epoch)
self.visualizer.print_current_performance(res, best_auc)
print(">> Training model %s.[Done]" % self.name)
##
def test(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/netG.pth".format(self.name.lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.netg.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netG weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(self.dataloader['test'].dataset),), dtype=torch.float32, device=self.device)
self.gt_labels = torch.zeros(size=(len(self.dataloader['test'].dataset),), dtype=torch.long, device=self.device)
self.latent_i = torch.zeros(size=(len(self.dataloader['test'].dataset), self.opt.nz), dtype=torch.float32, device=self.device)
self.latent_o = torch.zeros(size=(len(self.dataloader['test'].dataset), self.opt.nz), dtype=torch.float32, device=self.device)
# print(" Testing model %s." % self.name)
self.times = []
self.total_steps = 0
epoch_iter = 0
for i, data in enumerate(self.dataloader['test'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
self.fake, latent_i, latent_o = self.netg(self.input)
error = torch.mean(torch.pow((latent_i-latent_o), 2), dim=1)
time_o = time.time()
self.an_scores[i*self.opt.batchsize : i*self.opt.batchsize+error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i*self.opt.batchsize : i*self.opt.batchsize+error.size(0)] = self.gt.reshape(error.size(0))
self.latent_i [i*self.opt.batchsize : i*self.opt.batchsize+error.size(0), :] = latent_i.reshape(error.size(0), self.opt.nz)
self.latent_o [i*self.opt.batchsize : i*self.opt.batchsize+error.size(0), :] = latent_o.reshape(error.size(0), self.opt.nz)
self.times.append(time_o - time_i)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test', 'images')
if not os.path.isdir(dst):
os.makedirs(dst)
real, fake, _ = self.get_current_images()
vutils.save_image(real, '%s/real_%03d.eps' % (dst, i+1), normalize=True)
vutils.save_image(fake, '%s/fake_%03d.eps' % (dst, i+1), normalize=True)
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# Scale error vector between [0, 1]
self.an_scores = (self.an_scores - torch.min(self.an_scores)) / (torch.max(self.an_scores) - torch.min(self.an_scores))
# auc, eer = roc(self.gt_labels, self.an_scores)
auc = evaluate(self.gt_labels, self.an_scores, metric=self.opt.metric)
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times), ('AUC', auc)])
if self.opt.display_id > 0 and self.opt.phase == 'test':
counter_ratio = float(epoch_iter) / len(self.dataloader['test'].dataset)
self.visualizer.plot_performance(self.epoch, counter_ratio, performance)
return performance
class BaseModel():
""" Base Model for ganomaly
"""
def __init__(self, opt, dataloader):
##
# Seed for deterministic behavior
self.seed(opt.manualseed)
# Initalize variables.
self.opt = opt
self.visualizer = Visualizer(opt)
self.dataloader = dataloader
self.trn_dir = os.path.join(self.opt.outf, self.opt.name, 'train')
self.tst_dir = os.path.join(self.opt.outf, self.opt.name, 'test')
self.device = torch.device(
"cuda:0" if self.opt.device != 'cpu' else "cpu")
##
def set_input(self, input: torch.Tensor):
""" Set input and ground truth
Args:
input (FloatTensor): Input data for batch i.
"""
with torch.no_grad():
self.input.resize_(input[0].size()).copy_(input[0])
#self.gt.resize_(input[1].size()).copy_(input[1])
self.label.resize_(input[1].size())
if self.opt.dataset == 'mnist':
abn_idx = torch.from_numpy((np.where(
input[1].numpy() == int(self.opt.abnormal_class)))[0])
elif self.opt.dataset == 'fashionmnist':
classes = {
'tshirt': 0,
'trouser': 1,
'pullover': 2,
'dress': 3,
'coat': 4,
'sandal': 5,
'shirt': 6,
'sneacker': 7,
'bag': 8,
'boot': 9
}
abn_idx = torch.from_numpy((np.where(
input[1].numpy() == int(classes[self.opt.abnormal_class]))
)[0])
elif self.opt.dataset == 'svhn':
abn_idx = torch.from_numpy((np.where(
input[1].numpy() == int(self.opt.abnormal_class)))[0])
else:
classes = {
'plane': 0,
'car': 1,
'bird': 2,
'cat': 3,
'deer': 4,
'dog': 5,
'frog': 6,
'horse': 7,
'ship': 8,
'truck': 9
}
abn_idx = torch.from_numpy((np.where(
input[1].numpy() == int(classes[self.opt.abnormal_class]))
)[0])
test = torch.zeros(input[1].size())
test[abn_idx] = 1
self.gt = test
# Copy the first batch as the fixed input.
if self.total_steps == self.opt.batchsize:
self.fixed_input.resize_(input[0].size()).copy_(input[0])
##
def seed(self, seed_value):
""" Seed
Arguments:
seed_value {int} -- [description]
"""
# Check if seed is default value
if seed_value == -1:
return
# Otherwise seed all functionality
import random
random.seed(seed_value)
torch.manual_seed(seed_value)
torch.cuda.manual_seed_all(seed_value)
np.random.seed(seed_value)
torch.backends.cudnn.deterministic = True
##
def get_errors(self):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
errors = OrderedDict([('err_d', self.err_d.item()),
('err_g', self.err_g.item()),
('err_g_adv', self.err_g_adv.item()),
('err_g_con', self.err_g_con.item()),
('err_g_enc', self.err_g_enc.item())])
return errors
##
def get_current_images(self):
""" Returns current images.
Returns:
[reals, fakes, fixed]
"""
reals = self.input.data
fakes = self.fake.data
fixed = self.netg(self.fixed_input)[0].data
return reals, fakes, fixed
##
def save_weights(self, epoch):
"""Save netG and netD weights for the current epoch.
Args:
epoch ([int]): Current epoch number.
"""
#weight_dir = os.path.join(self.opt.outf, self.opt.name, 'train', 'weights')
#if not os.path.exists(weight_dir): os.makedirs(weight_dir)
weight_dir = os.path.join(self.opt.outf, self.opt.name, 'test',
'abnormal' + str(self.opt.abnormal_class),
'seed' + str(self.opt.manualseed))
if not os.path.exists(weight_dir): os.makedirs(weight_dir)
torch.save({
'epoch': epoch + 1,
'state_dict': self.netg.state_dict()
}, '%s/netG.pth' % (weight_dir))
torch.save({
'epoch': epoch + 1,
'state_dict': self.netd.state_dict()
}, '%s/netD.pth' % (weight_dir))
##
def train_one_epoch(self):
""" Train the model for one epoch.
"""
self.netg.train()
epoch_iter = 0
for data in tqdm(self.dataloader['train'],
leave=False,
total=len(self.dataloader['train'])):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.set_input(data)
# self.optimize()
self.optimize_params()
if self.total_steps % self.opt.print_freq == 0:
errors = self.get_errors()
if self.opt.display:
counter_ratio = float(epoch_iter) / len(
self.dataloader['train'].dataset)
self.visualizer.plot_current_errors(
self.epoch, counter_ratio, errors)
if self.total_steps % self.opt.save_image_freq == 0:
reals, fakes, fixed = self.get_current_images()
self.visualizer.save_current_images(self.epoch, reals, fakes,
fixed)
if self.opt.display:
self.visualizer.display_current_images(reals, fakes, fixed)
print(">> Training model %s. Epoch %d/%d" %
(self.name, self.epoch + 1, self.opt.niter))
# self.visualizer.print_current_errors(self.epoch, errors)
##
def train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best_auc = 0
# Train for niter epochs.
print(">> Training model %s." % self.name)
for self.epoch in range(self.opt.iter, self.opt.niter):
# Train for one epoch
self.train_one_epoch()
res = self.test()
if res['AUC'] > best_auc:
best_auc = res['AUC']
# self.save_weights(self.epoch)
self.visualizer.print_current_performance(res, best_auc)
print(">> Training model %s.[Done]" % self.name)
self.save_weights(self.epoch)
##
def test(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/netG.pth".format(
self.name.lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.netg.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netG weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.float32,
device=self.device)
self.gt_labels = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.long,
device=self.device)
self.latent_i = torch.zeros(size=(len(
self.dataloader['test'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
self.latent_o = torch.zeros(size=(len(
self.dataloader['test'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
# print(" Testing model %s." % self.name)
self.times = []
self.total_steps = 0
epoch_iter = 0
for i, data in enumerate(self.dataloader['test'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
#self.fake, latent_i, latent_o = self.netg(self.input)
self.fake, latent_i, latent_o = self.netg(self.input)
error = torch.mean(torch.pow((latent_i - latent_o), 2), dim=1)
time_o = time.time()
self.an_scores[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = self.gt.reshape(error.size(0))
self.latent_i[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_i.reshape(
error.size(0), self.opt.nz)
self.latent_o[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_o.reshape(
error.size(0), self.opt.nz)
self.times.append(time_o - time_i)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test',
'images')
if not os.path.isdir(dst):
os.makedirs(dst)
real, fake, _ = self.get_current_images()
vutils.save_image(real,
'%s/real_%03d.eps' % (dst, i + 1),
normalize=True)
vutils.save_image(fake,
'%s/fake_%03d.eps' % (dst, i + 1),
normalize=True)
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# Scale error vector between [0, 1]
self.an_scores = (self.an_scores - torch.min(self.an_scores)) / (
torch.max(self.an_scores) - torch.min(self.an_scores))
# auc, eer = roc(self.gt_labels, self.an_scores)
auc = evaluate(self.gt_labels,
self.an_scores,
metric=self.opt.metric)
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times),
('AUC', auc)])
if self.opt.display_id > 0 and self.opt.phase == 'test':
counter_ratio = float(epoch_iter) / len(
self.dataloader['test'].dataset)
self.visualizer.plot_performance(self.epoch, counter_ratio,
performance)
return performance
def train_final(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
with torch.no_grad():
#self.netg.eval()
#self.dataloader=dataL
#self.opt.phase = 'test'
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(
self.dataloader['train'].dataset), ),
dtype=torch.float32,
device=self.device)
self.gt_labels = torch.zeros(size=(len(
self.dataloader['train'].dataset), ),
dtype=torch.long,
device=self.device)
self.latent_i = torch.zeros(size=(len(
self.dataloader['train'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
self.latent_o = torch.zeros(size=(len(
self.dataloader['train'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
# print(" Testing model %s." % self.name)
self.times = []
self.total_steps = 0
epoch_iter = 0
for i, data in enumerate(self.dataloader['train'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
self.fake, latent_i, latent_o = self.netg(self.input)
error = torch.mean(torch.pow((latent_i - latent_o), 2), dim=1)
time_o = time.time()
self.an_scores[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = self.gt.reshape(error.size(0))
self.latent_i[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_i.reshape(
error.size(0), self.opt.nz)
self.latent_o[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_o.reshape(
error.size(0), self.opt.nz)
self.times.append(time_o - time_i)
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# Scale error vector between [0, 1]
self.an_scores = (self.an_scores - torch.min(self.an_scores)) / (
torch.max(self.an_scores) - torch.min(self.an_scores))
recon_1 = self.latent_i - self.latent_o
return recon_1
def test_final(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
with torch.no_grad():
#self.dataloader=dataL
#self.netg.eval()
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/netG.pth".format(
self.name.lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.netg.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netG weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.float32,
device=self.device)
self.gt_labels = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.long,
device=self.device)
self.gt_labels_original = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.long,
device=self.device)
self.latent_i = torch.zeros(size=(len(
self.dataloader['test'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
self.latent_o = torch.zeros(size=(len(
self.dataloader['test'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
# print(" Testing model %s." % self.name)
self.times = []
self.total_steps = 0
epoch_iter = 0
#del self.netg.grad_dict['final-256-1-conv']['grad_output']
#self.netg.grad_dict['final-256-1-conv']['grad_output']=[]
for i, data in enumerate(self.dataloader['test'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
#self.fake, latent_i, latent_o = self.netg(self.input)
#/#self.fake, latent_i, latent_o, latent_o_p, latent_o_pp, latent_o_ppp = self.netg(self.input)
#self.fake, latent_i, latent_o = self.netg(self.input)
self.fake, latent_i, latent_o = self.netg(self.input)
if (i == 0):
test_path = os.path.join(
self.opt.outf, self.opt.dataset, 'test', 'OCSVM',
'abnormal' + str(self.opt.abnormal_class))
print(test_path)
if not os.path.isdir(test_path):
os.makedirs(test_path)
test_path = os.path.join(
self.opt.outf, self.opt.dataset, 'test', 'OCSVM',
'abnormal' + str(self.opt.abnormal_class),
'reconstructed' + str(self.opt.abnormal_class) +
'.png')
viz.viz_batch_im(np.squeeze(np.array(self.fake.cpu())),
grid_size=[7, 7],
save_path=test_path,
gap=0,
gap_color=0,
shuffle=False)
test_path = os.path.join(
self.opt.outf, self.opt.dataset, 'test', 'OCSVM',
'abnormal' + str(self.opt.abnormal_class),
'img' + str(self.opt.abnormal_class) + '.png')
viz.viz_batch_im(np.squeeze(np.array(self.input.cpu())),
grid_size=[7, 7],
save_path=test_path,
gap=0,
gap_color=0,
shuffle=False)
error = torch.mean(torch.pow((latent_i - latent_o), 2), dim=1)
time_o = time.time()
self.an_scores[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = self.gt.reshape(error.size(0))
self.gt_labels_original[i * self.opt.batchsize:i *
self.opt.batchsize +
error.size(0)] = self.label.reshape(
error.size(0))
self.latent_i[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_i.reshape(
error.size(0), self.opt.nz)
self.latent_o[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_o.reshape(
error.size(0), self.opt.nz)
self.times.append(time_o - time_i)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test',
'images')
if not os.path.isdir(dst):
os.makedirs(dst)
real, fake, _ = self.get_current_images()
vutils.save_image(real,
'%s/real_%03d.eps' % (dst, i + 1),
normalize=True)
vutils.save_image(fake,
'%s/fake_%03d.eps' % (dst, i + 1),
normalize=True)
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# Scale error vector between [0, 1]
self.an_scores = (self.an_scores - torch.min(self.an_scores)) / (
torch.max(self.an_scores) - torch.min(self.an_scores))
auroc_value, auprc_value, _ = evaluate_final(
self.gt_labels.cpu().detach(),
self.an_scores.cpu().detach())
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times),
('AUROC', auroc_value),
('AUPRC', auprc_value)])
#self.visualizer.print_final_performance(performance)
recon_1 = self.latent_i - self.latent_o
y_true = self.gt_labels
y_true_original = self.gt_labels_original
return recon_1, y_true, y_true_original, auroc_value, auprc_value
class BaseModel():
""" Base Model for ganomaly
"""
def __init__(self, opt, data):
##
# Seed for deterministic behavior
self.seed(opt.manualseed)
# Initalize variables.
self.opt = opt
self.visualizer = Visualizer(opt)
self.data = data
self.trn_dir = os.path.join(self.opt.outf, self.opt.name, 'train')
self.tst_dir = os.path.join(self.opt.outf, self.opt.name, 'test')
self.device = torch.device("cuda:0" if self.opt.device != 'cpu' else "cpu")
##
def seed(self, seed_value):
""" Seed
Arguments:
seed_value {int} -- [description]
"""
# Check if seed is default value
if seed_value == -1:
return
# Otherwise seed all functionality
import random
random.seed(seed_value)
torch.manual_seed(seed_value)
torch.cuda.manual_seed_all(seed_value)
np.random.seed(seed_value)
torch.backends.cudnn.deterministic = True
##
def set_input(self, input:torch.Tensor, noise:bool=False):
""" Set input and ground truth
Args:
input (FloatTensor): Input data for batch i.
"""
with torch.no_grad():
self.input.resize_(input[0].size()).copy_(input[0])
self.gt.resize_(input[1].size()).copy_(input[1])
self.label.resize_(input[1].size())
# Add noise to the input.
if noise: self.noise.data.copy_(torch.randn(self.noise.size()))
# Copy the first batch as the fixed input.
if self.total_steps == self.opt.batchsize:
self.fixed_input.resize_(input[0].size()).copy_(input[0])
##
def get_errors(self):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
errors = OrderedDict([
('err_d', self.err_d.item()),
('err_g', self.err_g.item()),
('err_g_adv', self.err_g_adv.item()),
('err_g_con', self.err_g_con.item()),
('err_g_lat', self.err_g_lat.item())])
return errors
##
def reinit_d(self):
""" Initialize the weights of netD
"""
self.netd.apply(weights_init)
print('Reloading d net')
##
def get_current_images(self):
""" Returns current images.
Returns:
[reals, fakes, fixed]
"""
reals = self.input.data
fakes = self.fake.data
fixed = self.netg(self.fixed_input)[0].data
return reals, fakes, fixed
##
def save_weights(self, epoch:int, is_best:bool=False):
"""Save netG and netD weights for the current epoch.
Args:
epoch ([int]): Current epoch number.
"""
weight_dir = os.path.join(
self.opt.outf, self.opt.name, 'train', 'weights')
if not os.path.exists(weight_dir):
os.makedirs(weight_dir)
if is_best:
torch.save({'epoch': epoch, 'state_dict': self.netg.state_dict()}, f'{weight_dir}/netG_best.pth')
torch.save({'epoch': epoch, 'state_dict': self.netd.state_dict()}, f'{weight_dir}/netD_best.pth')
else:
torch.save({'epoch': epoch, 'state_dict': self.netd.state_dict()}, f"{weight_dir}/netD_{epoch}.pth")
torch.save({'epoch': epoch, 'state_dict': self.netg.state_dict()}, f"{weight_dir}/netG_{epoch}.pth")
def load_weights(self, epoch=None, is_best:bool=False, path=None):
""" Load pre-trained weights of NetG and NetD
Keyword Arguments:
epoch {int} -- Epoch to be loaded (default: {None})
is_best {bool} -- Load the best epoch (default: {False})
path {str} -- Path to weight file (default: {None})
Raises:
Exception -- [description]
IOError -- [description]
"""
if epoch is None and is_best is False:
raise Exception('Please provide epoch to be loaded or choose the best epoch.')
if is_best:
fname_g = f"netG_best.pth"
fname_d = f"netD_best.pth"
else:
fname_g = f"netG_{epoch}.pth"
fname_d = f"netD_{epoch}.pth"
if path is None:
path_g = f"./output/{self.name}/{self.opt.dataset}/train/weights/{fname_g}"
path_d = f"./output/{self.name}/{self.opt.dataset}/train/weights/{fname_d}"
# Load the weights of netg and netd.
print('>> Loading weights...')
weights_g = torch.load(path_g)['state_dict']
weights_d = torch.load(path_d)['state_dict']
try:
self.netg.load_state_dict(weights_g)
self.netd.load_state_dict(weights_d)
except IOError:
raise IOError("netG weights not found")
print(' Done.')
##
def train_one_epoch(self):
""" Train the model for one epoch.
"""
self.netg.train()
epoch_iter = 0
for data in tqdm(self.data.train, leave=False, total=len(self.data.train)):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.set_input(data)
self.optimize_params()
if self.total_steps % self.opt.print_freq == 0:
errors = self.get_errors()
if self.opt.display:
counter_ratio = float(epoch_iter) / len(self.data.train.dataset)
self.visualizer.plot_current_errors(self.epoch, counter_ratio, errors)
if self.total_steps % self.opt.save_image_freq == 0:
reals, fakes, fixed = self.get_current_images()
self.visualizer.save_current_images(self.epoch, reals, fakes, fixed)
if self.opt.display:
self.visualizer.display_current_images(reals, fakes, fixed)
print(">> Training model %s. Epoch %d/%d" % (self.name, self.epoch+1, self.opt.niter))
##
def train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best_auc = 0
# Train for niter epochs.
print(f">> Training {self.name} on {self.opt.dataset} to detect {self.opt.abnormal_class}")
for self.epoch in range(self.opt.iter, self.opt.niter):
self.train_one_epoch()
res = self.test()
if res['AUC'] > best_auc:
best_auc = res['AUC']
self.save_weights(self.epoch)
self.visualizer.print_current_performance(res, best_auc)
print(">> Training model %s.[Done]" % self.name)
##
def test(self):
""" Test GANomaly model.
Args:
data ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/netG.pth".format(self.name.lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.netg.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netG weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(self.data.valid.dataset),), dtype=torch.float32, device=self.device)
self.gt_labels = torch.zeros(size=(len(self.data.valid.dataset),), dtype=torch.long, device=self.device)
self.latent_i = torch.zeros(size=(len(self.data.valid.dataset), self.opt.nz), dtype=torch.float32, device=self.device)
self.latent_o = torch.zeros(size=(len(self.data.valid.dataset), self.opt.nz), dtype=torch.float32, device=self.device)
# print(" Testing model %s." % self.name)
self.times = []
self.total_steps = 0
epoch_iter = 0
for i, data in enumerate(self.data.valid, 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
self.fake, latent_i, latent_o = self.netg(self.input)
error = torch.mean(torch.pow((latent_i-latent_o), 2), dim=1)
time_o = time.time()
self.an_scores[i*self.opt.batchsize : i*self.opt.batchsize+error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i*self.opt.batchsize : i*self.opt.batchsize+error.size(0)] = self.gt.reshape(error.size(0))
self.latent_i [i*self.opt.batchsize : i*self.opt.batchsize+error.size(0), :] = latent_i.reshape(error.size(0), self.opt.nz)
self.latent_o [i*self.opt.batchsize : i*self.opt.batchsize+error.size(0), :] = latent_o.reshape(error.size(0), self.opt.nz)
self.times.append(time_o - time_i)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test', 'images')
if not os.path.isdir(dst):
os.makedirs(dst)
real, fake, _ = self.get_current_images()
vutils.save_image(real, '%s/real_%03d.eps' % (dst, i+1), normalize=True)
vutils.save_image(fake, '%s/fake_%03d.eps' % (dst, i+1), normalize=True)
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# Scale error vector between [0, 1]
self.an_scores = (self.an_scores - torch.min(self.an_scores)) / (torch.max(self.an_scores) - torch.min(self.an_scores))
auc = evaluate(self.gt_labels, self.an_scores, metric=self.opt.metric)
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times), ('AUC', auc)])
if self.opt.display_id > 0 and self.opt.phase == 'test':
counter_ratio = float(epoch_iter) / len(self.data.valid.dataset)
self.visualizer.plot_performance(self.epoch, counter_ratio, performance)
return performance
##
def update_learning_rate(self):
""" Update learning rate based on the rule provided in options.
"""
for scheduler in self.schedulers:
scheduler.step()
lr = self.optimizers[0].param_groups[0]['lr']
print(' LR = %.7f' % lr)
class ocgan(object):
"""GANomaly Class
"""
@staticmethod
def name():
"""Return name of the class.
"""
return 'ocgan'
def __init__(self, opt, dataloader=None):
super(ocgan, self).__init__()
##
# Initalize variables.
self.opt = opt
self.visualizer = Visualizer(opt)
self.dataloader = dataloader
self.trn_dir = os.path.join(self.opt.outf, self.opt.name, 'train')
self.tst_dir = os.path.join(self.opt.outf, self.opt.name, 'test')
# -- Discriminator attributes.
self.out_dv0=None
self.out_dv1=None
self.out_dv=None
self.label_dv=None
self.err_dv_bce=None
self.out_dl0=None
self.out_dl1=None
self.out_dl=None
self.label_dl=None
self.err_dl_bce=None
self.err_d=None
# -- Generator attributes.
self.out_gv0 = None
self.out_gv1 = None
self.out_gv = None
self.label_gv = None
self.err_gv_bce = None
self.out_gl0 = None
self.out_gl1 = None
self.out_gl = None
self.label_gl = None
self.err_gl_bce = None
self.err_g_mse =None
self.err_g = None
# -- Classfier attribute
self.out_c0=None
self.out_c1=None
self.out_c=None
self.label_c=None
self.err_c_bce = None
# -- mine attribute
self.out_m = None
self.err_m_bce = None
# -- Misc attributes
self.epoch = 0
self.times = []
self.total_steps = 0
##
# Create and initialize networks.
print('Create and initialize networks.')
self.neten=Encoder(self.opt.isize,self.opt.nc,self.opt.ndf)
self.netde=Decoder(self.opt.isize,self.opt.nc,self.opt.ngf)
self.netdl=Dl(self.opt.nz)
self.netdv=Dv(self.opt)
self.netc=Classfier(self.opt)
self.netdv.apply(weights_init)
self.netc.apply(weights_init)
self.neten.apply(weights_init)
self.netde.apply(weights_init)
print('end')
##
if self.opt.resume != '':
print("\nLoading pre-trained networks.")
self.opt.iter = torch.load(os.path.join(self.opt.resume, 'neten.pth'))['epoch']
self.neten.load_state_dict(torch.load(os.path.join(self.opt.resume, 'neten.pth'))['state_dict'])
self.netde.load_state_dict(torch.load(os.path.join(self.opt.resume, 'netde.pth'))['state_dict'])
self.netdl.load_state_dict(torch.load(os.path.join(self.opt.resume, 'netdl.pth'))['state_dict'])
self.netdv.load_state_dict(torch.load(os.path.join(self.opt.resume, 'netdv.pth'))['state_dict'])
self.netc.load_state_dict(torch.load(os.path.join(self.opt.resume, 'netC.pth'))['state_dict'])
print("\tDone.\n")
print(self.neten)
print(self.netde)
print(self.netdl)
print(self.netdv)
print(self.netc)
##
# Loss Functions
self.bce_criterion = nn.BCELoss()
self.l1l_criterion = nn.L1Loss()
self.l2l_criterion = nn.MSELoss()
##
# Initialize input tensors.
print('Initialize input tensors.')
self.input = torch.empty(size=(self.opt.batchsize, 3, self.opt.isize, self.opt.isize), dtype=torch.float32)
self.label = torch.empty(size=(self.opt.batchsize,), dtype=torch.float32)
self.labelf = torch.empty(size=(self.opt.batchsize,), dtype=torch.float32)
self.gt = torch.empty(size=(opt.batchsize,), dtype=torch.long)
self.fixed_input = torch.empty(size=(self.opt.batchsize, 3, self.opt.isize, self.opt.isize), dtype=torch.float32)
self.real_label = 1
self.fake_label = 0
self.u=None
self.n=None
self.l1=None
self.l2=torch.empty(size=(self.opt.batchsize, self.opt.nz,1,1), dtype=torch.float32)
self.del1=None
self.del2=None
print('end')
##
# Setup optimizer
print('Setup optimizer')
if self.opt.isTrain:
self.neten.train()
self.netde.train()
self.netdv.train()
self.netdl.train()
self.netc.train()
self.optimizer_en = optim.Adam(self.neten.parameters(), lr=self.opt.lr, betas=(self.opt.beta1, 0.999))
self.optimizer_de = optim.Adam(self.netde.parameters(), lr=self.opt.lr, betas=(self.opt.beta1, 0.999))
self.optimizer_dl = optim.Adam(self.netdl.parameters(), lr=self.opt.lr, betas=(self.opt.beta1, 0.999))
self.optimizer_dv = optim.Adam(self.netdv.parameters(), lr=self.opt.lr, betas=(self.opt.beta1, 0.999))
self.optimizer_c = optim.Adam(self.netc.parameters(), lr=self.opt.lr, betas=(self.opt.beta1, 0.999))
self.optimizer_l2 = optim.Adam([{'params':self.l2}], lr=self.opt.lr, betas=(self.opt.beta1, 0.999))
print('end')
##
def set_input(self, input):
""" Set input and ground truth
Args:
input (FloatTensor): Input data for batch i.
"""
self.input.data.resize_(input[0].size()).copy_(input[0])
self.gt.data.resize_(input[1].size()).copy_(input[1])
# Copy the first batch as the fixed input.
if self.total_steps == self.opt.batchsize:
self.fixed_input.data.resize_(input[0].size()).copy_(input[0])
##
def update_netd(self):
"""
Update D network: Ladv = |f(real) - f(fake)|_2
"""
##
# Feature Matching.
self.netdv.zero_grad()
self.netdl.zero_grad()
# --
self.out_dv0 = self.netdv(self.del2.detach())
self.out_dv1 = self.netdv(self.input)
self.out_dv = torch.cat([self.out_dv0, self.out_dv1], 0)
self.labelf.data.resize_(self.opt.batchsize).fill_(self.fake_label)
self.label.data.resize_(self.opt.batchsize).fill_(self.real_label)
self.label_dv = torch.cat([self.labelf, self.label], 0)
self.err_dv_bce = self.bce_criterion(self.out_dv, self.label_dv)
self.out_dl0 = self.netdl(self.l1.detach())
self.out_dl1 = self.netdl(self.l2)
self.out_dl = torch.cat([self.out_dl0, self.out_dl1], 0)
self.labelf.data.resize_(self.opt.batchsize).fill_(self.fake_label)
self.label.data.resize_(self.opt.batchsize).fill_(self.real_label)
self.label_dl = torch.cat([self.labelf, self.label], 0)
self.err_dl_bce = self.bce_criterion(self.out_dl, self.label_dl)
self.err_d=self.err_dl_bce+self.err_dv_bce
self.err_d.backward(retain_graph=True)
self.optimizer_dv.step()
self.optimizer_dl.step()
##
def update_netg(self):
"""
# ============================================================ #
# (2) Update G network: log(D(G(x))) + ||G(x) - x|| #
# ============================================================ #
"""
self.neten.zero_grad()
self.netde.zero_grad()
# --
# self.out_gv0 = self.netdv(self.input)
# self.out_gv1 = self.netdv(self.del2)
# self.out_gv = torch.cat([self.out_gv0, self.out_gv1], 0)
self.out_gv1 = self.netdv(self.del2)
# self.labelf.data.resize_(self.opt.batchsize).fill_(self.fake_label)
self.label.data.resize_(self.opt.batchsize).fill_(self.real_label)
# self.label_gv = torch.cat([self.labelf, self.label], 0)
# self.err_gv_bce = self.bce_criterion(self.out_gv, self.label_gv)
self.err_gv_bce = self.bce_criterion(self.out_gv1, self.label)
# self.out_gl0 = self.netdl(self.l2)
# self.out_gl1 = self.netdl(self.l1)
# self.out_gl = torch.cat([self.out_gl0, self.out_gl1], 0)
self.out_gl1 = self.netdl(self.l1)
# self.labelf.data.resize_(self.opt.batchsize).fill_(self.fake_label)
self.label.data.resize_(self.opt.batchsize).fill_(self.real_label)
# self.label_gl = torch.cat([self.labelf, self.label], 0)
# self.err_gl_bce = self.bce_criterion(self.out_gl, self.label_gl)
self.err_gl_bce = self.bce_criterion(self.out_gl1, self.label)
self.err_g_mse=self.l2l_criterion(self.input, self.del1)
self.err_g = self.err_gl_bce + self.err_gv_bce+self.err_g_mse
self.err_g.backward(retain_graph=True)
self.optimizer_en.step()
self.optimizer_de.step()
##
def update_netc(self):
self.netc.zero_grad()
self.out_c0=self.netc(self.del2.detach())
self.out_c1 = self.netc(self.input)
# self.out_c1=self.netc(self.del1.detach())
self.out_c=torch.cat([self.out_c0,self.out_c1],0)
self.labelf.data.resize_(self.opt.batchsize).fill_(self.fake_label)
self.label.data.resize_(self.opt.batchsize).fill_(self.real_label)
self.label_c=torch.cat([self.labelf,self.label],0)
self.err_c_bce = self.bce_criterion(self.out_c, self.label_c)
self.err_c_bce.backward()
self.optimizer_c.step()
def update_l2(self):
for i in range(5):
self.optimizer_l2.zero_grad()
self.out_m=self.netc(self.del2)
self.labelf.data.resize_(self.opt.batchsize).fill_(self.fake_label)
self.err_m_bce = self.bce_criterion(self.out_m, self.labelf)
self.err_m_bce.backward()
self.optimizer_l2.step()
self.del2=self.netde(self.l2)
def optimize(self):
""" Optimize netD and netG networks.
"""
self.u = np.random.uniform(-1, 1, (self.opt.batchsize, self.opt.nz, 1, 1))
self.l2 = torch.from_numpy(self.u).float()
self.n = torch.randn(self.opt.batchsize, self.opt.nc, self.opt.isize, self.opt.isize)
self.l1 = self.neten(self.input + self.n)
self.del1=self.netde(self.l1)
self.del2=self.netde(self.l2)
self.update_netc()
self.update_netd()
if self.opt.mine==True:
self.update_l2()
self.update_netg()
##
def get_errors(self):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
errors = OrderedDict([('err_d', self.err_d.item()),
('err_g', self.err_g.item()),
('err_dv_bce', self.err_dv_bce.item()),
('err_dl_bce', self.err_dl_bce.item()),
('err_gv_bce', self.err_gv_bce.item()),
('err_gl_l1l', self.err_gl_bce.item()),
('err_g_mse', self.err_g_mse.item()),
('err_c_bce', self.err_c_bce.item())])
return errors
##
def get_current_images(self):
""" Returns current images.
Returns:
[reals, fakes, fixed]
"""
reals = self.input.data
fakes = self.del1.data
fixed = self.netde(self.neten(self.fixed_input))[0].data
return reals, fakes, fixed
##
def save_weights(self, epoch):
"""Save netG and netD weights for the current epoch.
Args:
epoch ([int]): Current epoch number.
"""
weight_dir = os.path.join(self.opt.outf, self.opt.name, 'train', 'weights')
if not os.path.exists(weight_dir):
os.makedirs(weight_dir)
torch.save({'epoch': epoch + 1, 'state_dict': self.neten.state_dict()},
'%s/neten.pth' % (weight_dir))
torch.save({'epoch': epoch + 1, 'state_dict': self.netde.state_dict()},
'%s/netde.pth' % (weight_dir))
torch.save({'epoch': epoch + 1, 'state_dict': self.netdl.state_dict()},
'%s/netdl.pth' % (weight_dir))
torch.save({'epoch': epoch + 1, 'state_dict': self.netdv.state_dict()},
'%s/netdv.pth' % (weight_dir))
torch.save({'epoch': epoch + 1, 'state_dict': self.netc.state_dict()},
'%s/netc.pth' % (weight_dir))
##
def train_epoch(self):
""" Train the model for one epoch.
"""
self.neten.train()
self.netde.train()
epoch_iter = 0
for data in tqdm(self.dataloader['train'], leave=False, total=len(self.dataloader['train'])):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.set_input(data)
self.optimize()
if self.total_steps % self.opt.print_freq == 0:
errors = self.get_errors()
if self.opt.display:
counter_ratio = float(epoch_iter) / len(self.dataloader['train'].dataset)
self.visualizer.plot_current_errors(self.epoch, counter_ratio, errors)
if self.total_steps % self.opt.save_image_freq == 0:
reals, fakes, fixed = self.get_current_images()
self.visualizer.save_current_images(self.epoch, reals, fakes, fixed)
if self.opt.display:
self.visualizer.display_current_images(reals, fakes, fixed)
print(">> Training model %s. Epoch %d/%d" % (self.name(), self.epoch+1, self.opt.niter))
# self.visualizer.print_current_errors(self.epoch, errors)
##
def train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best_auc = 0
# Train for niter epochs.
print(">> Training model %s." % self.name())
for self.epoch in range(self.opt.iter, self.opt.niter):
# Train for one epoch
self.train_epoch()
res = self.test()
# if res['AUC'] > best_auc:
# best_auc = res['AUC']
# self.save_weights(self.epoch)
if res['AUC'] > best_auc:
best_auc = res['AUC']
self.save_weights(self.epoch)
self.visualizer.print_current_performance(res, best_auc)
print(">> Training model %s.[Done]" % self.name())
##
def test(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/netc.pth".format(self.name().lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.netc.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netc weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.gt_labels = torch.zeros(size=(len(self.dataloader['test'].dataset),), dtype=torch.long)
self.an_scores = torch.zeros(size=(len(self.dataloader['test'].dataset),), dtype=torch.float32)
# print(" Testing model %s." % self.name())
self.times = []
self.total_steps = 0
epoch_iter = 0
# print(self.dataloader['test'])
# print(type(self.dataloader['test']))
for i, data in enumerate(self.dataloader['test'], 0):
#
# print(data)
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
self.out_c = self.netc(self.input)
time_o = time.time()
self.an_scores[i * self.opt.batchsize: i * self.opt.batchsize + self.out_c.size(0)] = self.out_c
self.gt_labels[i*self.opt.batchsize : i*self.opt.batchsize+self.out_c.size(0)] = self.gt.reshape(self.out_c.size(0))
self.times.append(time_o - time_i)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test', 'images')
if not os.path.isdir(dst):
os.makedirs(dst)
real, fake, _ = self.get_current_images()
vutils.save_image(real, '%s/real_%03d.png' % (dst, i+1), normalize=True,nrow=4)
vutils.save_image(fake, '%s/fake_%03d.png' % (dst, i+1), normalize=True,nrow=4)
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# auc, eer = roc(self.gt_labels, self.an_scores)
auc = evaluate(self.gt_labels, self.an_scores,metric=self.opt.metric)
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times), ('AUC', auc)])
if self.opt.display_id > 0 and self.opt.phase == 'test':
counter_ratio = float(epoch_iter) / len(self.dataloader['test'].dataset)
self.visualizer.plot_performance(self.epoch, counter_ratio, performance)
return performance
def test1(self):
""" Test GANomaly model.
"""
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/neten.pth".format(self.name().lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.neten.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netc weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.gt_labels = torch.zeros(size=(len(self.dataloader['test'].dataset),), dtype=torch.long)
self.an_scores = torch.zeros(size=(len(self.dataloader['test'].dataset),self.opt.nz), dtype=torch.float32)
# print(" Testing model %s." % self.name())
self.times = []
self.total_steps = 0
epoch_iter = 0
# print(self.dataloader['test'])
# print(type(self.dataloader['test']))
for i, data in enumerate(self.dataloader['test'], 0):
#
# print(data)
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
self.l1 = self.neten(self.input)
time_o = time.time()
self.an_scores[i * self.opt.batchsize: i * self.opt.batchsize + self.l1.size(0),:] = self.l1.reshape(self.l1.size(0),self.opt.nz)
self.gt_labels[i*self.opt.batchsize : i*self.opt.batchsize+self.l1.size(0)] = self.gt.reshape(self.l1.size(0))
self.times.append(time_o - time_i)
x=self.an_scores.numpy()
y=self.gt_labels.numpy()
return x,y
class BaseModel():
""" Base Model for ganomaly
"""
def __init__(self, opt, dataloader):
##
# Seed for deterministic behavior
self.seed(opt.manualseed)
# Initalize variables.
self.opt = opt
self.visualizer = Visualizer(opt)
self.dataloader = dataloader
self.trn_dir = os.path.join(self.opt.outf, self.opt.name, 'train')
self.tst_dir = os.path.join(self.opt.outf, self.opt.name, 'test')
self.device = torch.device(
"cuda:0" if self.opt.device != 'cpu' else "cpu")
self.sqrtnz = int(self.opt.nz**0.5)
##
def set_input(self, input: torch.Tensor):
""" Set input and ground truth
Args:
input (FloatTensor): Input data for batch i.
"""
with torch.no_grad():
self.input.resize_(input[0].size()).copy_(input[0])
self.gt.resize_(input[1].size()).copy_(input[1])
self.label.resize_(input[1].size())
# Copy the first batch as the fixed input.
if self.total_steps == self.opt.batchsize:
self.fixed_input.resize_(input[0].size()).copy_(input[0])
self.visualizer.save_fixed_real_s(self.fixed_input)
def z_set_input(self, net, input: torch.Tensor):
with torch.no_grad():
if net == 'i':
self.i_input.resize_(input[0].size()).copy_(input[0])
self.i_gt.resize_(input[1].size()).copy_(input[1])
self.i_label.resize_(input[1].size())
self.i_real_label.resize_(input[1].size()).copy_(input[1])
if net == 'o':
self.o_input.resize_(input[0].size()).copy_(input[0])
self.o_gt.resize_(input[1].size()).copy_(input[1])
self.o_label.resize_(input[1].size())
self.o_real_label.resize_(input[1].size()).copy_(input[1])
##
def seed(self, seed_value):
""" Seed
Arguments:
seed_value {int} -- [description]
"""
# Check if seed is default value
if seed_value == -1:
return
# Otherwise seed all functionality
import random
random.seed(seed_value)
torch.manual_seed(seed_value)
torch.cuda.manual_seed_all(seed_value)
np.random.seed(seed_value)
torch.backends.cudnn.deterministic = True
##
def get_errors(self):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
errors = OrderedDict([('err_d', self.err_d.item()),
('err_g', self.err_g.item()),
('err_g_adv', self.err_g_adv.item()),
('err_g_con', self.err_g_con.item()),
('err_g_enc', self.err_g_enc.item())])
return errors
##
def z_get_errors(self, net):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
if net == 'i':
errors = OrderedDict([('err_i', self.err_i.item())])
if net == 'o':
errors = OrderedDict([('err_o', self.err_o.item())])
return errors
##
def get_current_images(self):
""" Returns current images.
Returns:
[reals, fakes, fixed]
"""
reals = self.input.data
fakes = self.fake.data
fixed = self.netg(self.fixed_input)[0].data
# point
fixed_reals = self.fixed_input.data
# point
return reals, fakes, fixed, fixed_reals
##
def save_weights(self, epoch):
"""Save netG and netD weights for the current epoch.
Args:
epoch ([int]): Current epoch number.
"""
weight_dir = os.path.join(self.opt.outf, self.opt.name, 'train',
'weights')
if not os.path.exists(weight_dir): os.makedirs(weight_dir)
torch.save({
'epoch': epoch + 1,
'state_dict': self.netg.state_dict()
}, '%s/netG.pth' % (weight_dir))
torch.save({
'epoch': epoch + 1,
'state_dict': self.netd.state_dict()
}, '%s/netD.pth' % (weight_dir))
##
def train_one_epoch(self):
""" Train the model for one epoch.
"""
self.netg.train()
if self.opt.strengthen:
self.netd.train() ## point
epoch_iter = 0
for data in tqdm(self.dataloader['train'],
leave=False,
total=len(self.dataloader['train'])):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.set_input(data)
# self.optimize()
self.optimize_params()
if self.total_steps % self.opt.print_freq == 0:
errors = self.get_errors()
if self.opt.display:
counter_ratio = float(epoch_iter) / len(
self.dataloader['train'].dataset)
self.visualizer.plot_current_errors(
self.epoch, counter_ratio, errors)
if self.total_steps % self.opt.save_image_freq == 0:
# point
reals, fakes, fixed, fixed_reals = self.get_current_images()
self.visualizer.save_current_images(self.epoch, reals, fakes,
fixed)
if self.opt.display:
self.visualizer.display_current_images(
reals, fakes, fixed, fixed_reals)
print(">> Training model %s. Epoch %d/%d" %
(self.name, self.epoch + 1, self.opt.niter))
# self.visualizer.print_current_errors(self.epoch, errors)
##
def train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best_auc = 0
# Train for niter epochs.
print(">> Training model %s." % self.name)
for self.epoch in range(self.opt.iter, self.opt.niter):
# Train for one epoch
self.train_one_epoch()
res = self.test()
if res['AUC'] > best_auc:
best_auc = res['AUC']
self.save_weights(self.epoch)
self.visualizer.print_current_performance(res, best_auc)
print(">> Training model %s.[Done]" % self.name)
##
def test(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
if self.opt.strengthen:
self.netg.eval()
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/netG.pth".format(
self.name.lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.netg.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netG weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.float32,
device=self.device)
self.gt_labels = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.long,
device=self.device)
self.latent_i = torch.zeros(size=(len(
self.dataloader['test'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
self.latent_o = torch.zeros(size=(len(
self.dataloader['test'].dataset), self.opt.nz),
dtype=torch.float32,
device=self.device)
self.d_pred = torch.zeros(size=(len(
self.dataloader['test'].dataset), ),
dtype=torch.float32,
device=self.device)
self.last_feature = torch.zeros(
size=(len(self.dataloader['test'].dataset),
list(self.netd.children())[0][-3].out_channels,
list(self.netd.children())[0][-3].kernel_size[0],
list(self.netd.children())[0][-3].kernel_size[1]),
dtype=torch.float32,
device=self.device)
self.times = []
self.total_steps = 0
epoch_iter = 0
for i, data in enumerate(self.dataloader['test'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
self.fake, latent_i, latent_o = self.netg(self.input)
d_pred, features = self.netd(self.input)
error = torch.mean(torch.pow((latent_i - latent_o), 2), dim=1)
time_o = time.time()
self.an_scores[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = self.gt.reshape(error.size(0))
self.latent_i[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_i.reshape(
error.size(0), self.opt.nz)
self.latent_o[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = latent_o.reshape(
error.size(0), self.opt.nz)
self.d_pred[i * self.opt.batchsize:i * self.opt.batchsize +
d_pred.size(0)] = d_pred.reshape(d_pred.size(0))
self.last_feature[
i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0), :] = features.reshape(
error.size(0),
list(self.netd.children())[0][-3].out_channels,
list(self.netd.children())[0][-3].kernel_size[0],
list(self.netd.children())[0][-3].kernel_size[1])
self.times.append(time_o - time_i)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test',
'images')
if not os.path.isdir(dst):
os.makedirs(dst)
real, fake, _, _ = self.get_current_images(
) # point add attribute fixed_real
vutils.save_image(real,
'%s/real_%03d.eps' % (dst, i + 1),
normalize=True)
vutils.save_image(fake,
'%s/fake_%03d.eps' % (dst, i + 1),
normalize=True)
"""
data=[]
feature = self.last_feature.cpu().numpy().reshape(self.last_feature.size()[0], -1)
label = self.gt_labels.cpu().numpy().reshape(self.last_feature.size()[0], -1)
features_dir = './features'
file_name = 'features_map.csv'
feature_path = os.path.join(features_dir, file_name + '.txt')
import pandas as pd
feature.tolist()
label.tolist()
test = pd.DataFrame(data=feature)
test.to_csv("./feature.csv", mode='a+', index=None, header=None)
test = pd.DataFrame(data=label)
test.to_csv("./label.csv", mode='a+', index=None, header=None)
print('END')
"""
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# Scale error vector between [0, 1]
self.an_scores = (self.an_scores - torch.min(self.an_scores)) / (
torch.max(self.an_scores) - torch.min(self.an_scores))
# auc, eer = roc(self.gt_labels, self.an_scores)
auc = evaluate(self.gt_labels,
self.an_scores,
metric=self.opt.metric)
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times),
('AUC', auc)])
if self.opt.strengthen and self.opt.phase == 'test':
t0 = threading.Thread(
target=self.visualizer.display_scores_histo,
name='histogram ',
args=(self.epoch, self.an_scores, self.gt_labels))
t0.start()
if self.opt.strengthen > 1:
t1 = threading.Thread(
target=self.visualizer.display_feature,
name='t-SNE visualizer',
args=(self.last_feature, self.gt_labels))
t2 = threading.Thread(
target=self.visualizer.display_latent,
name='latent LDA visualizer',
args=(self.latent_i, self.latent_o, self.gt_labels, 9,
1000, True))
t1.start()
t2.start()
if self.opt.display_id > 0 and self.opt.phase == 'test':
counter_ratio = float(epoch_iter) / len(
self.dataloader['test'].dataset)
self.visualizer.plot_performance(self.epoch, counter_ratio,
performance)
if self.opt.classifier:
self.z_dataloader = set_dataset(self.opt, self.latent_i,
self.latent_o, self.gt_labels)
return performance
##
def z_save_weights(self, epoch):
weight_dir = os.path.join(self.opt.outf, self.opt.name, 'train',
'weights')
if not os.path.exists(weight_dir): os.makedirs(weight_dir)
torch.save({
'epoch': epoch + 1,
'state_dict': self.netc_i.state_dict()
}, '%s/netC_i.pth' % (weight_dir))
torch.save({
'epoch': epoch + 1,
'state_dict': self.netc_o.state_dict()
}, '%s/netC_o.pth' % (weight_dir))
##
def z_train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best = 0
# Train for niter epochs.
print(">> Training model classifier")
for self.epoch in range(self.opt.iter, self.opt.niter):
# Train for one epoch
self.z_train_one_epoch()
res = self.z_test()
if res[self.opt.z_metric] > best:
best = res[self.opt.z_metric]
self.z_save_weights(self.epoch)
self.visualizer.print_current_performance(res, best,
self.opt.z_metric)
self.visualizer.record_best(best, self.opt.z_metric,
self.opt.abnormal_class,
self.opt.manualseed, 'ganomaly_s')
print(">> Training model %s.[Done]" % self.name)
##
def z_train_one_epoch(self):
""" Train the model for one epoch.
"""
self.netc_i.train()
self.netc_o.train()
epoch_iter = 0
for data in tqdm(self.z_dataloader['i_train'],
leave=False,
total=len(self.z_dataloader['i_train'])):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.z_set_input('i', data)
# self.optimize()
self.z_optimize_params('i')
for data in tqdm(self.z_dataloader['o_train'],
leave=False,
total=len(self.z_dataloader['o_train'])):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.z_set_input('o', data)
# self.optimize()
self.z_optimize_params('o')
if self.total_steps % self.opt.print_freq == 0:
errors = self.z_get_errors('i')
if self.opt.display:
counter_ratio = float(epoch_iter) / len(
self.z_dataloader['i_train'].dataset)
self.visualizer.plot_current_errors(
self.epoch, counter_ratio, errors)
# if self.total_steps % self.opt.save_image_freq == 0:
# # point
# reals, fakes, fixed, fixed_reals = self.get_current_images()
# self.visualizer.save_current_images(self.epoch, reals, fakes, fixed)
# if self.opt.display:
# self.visualizer.display_current_images(reals, fakes, fixed, fixed_reals)
print(">> Training model %s. Epoch %d/%d" %
(self.name, self.epoch + 1, self.opt.niter))
##
def z_test(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
self.netd.eval()
self.netc_i.eval()
self.netc_o.eval()
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.z_load_weights:
d_path = "./output/{}/{}/train/weights/netD.pth".format(
self.name.lower(), self.opt.dataset)
i_path = "./output/{}/{}/train/weights/netC_i.pth".format(
self.name.lower(), self.opt.dataset)
o_path = "./output/{}/{}/train/weights/netC_o.pth".format(
self.name.lower(), self.opt.dataset)
d_pretrained_dict = torch.load(d_path)['state_dict']
i_pretrained_dict = torch.load(i_path)['state_dict']
o_pretrained_dict = torch.load(o_path)['state_dict']
try:
self.netd.load_state_dict(d_pretrained_dict)
self.netc_i.load_state_dict(i_pretrained_dict)
self.netc_o.load_state_dict(o_pretrained_dict)
except IOError:
raise IOError("net weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.i_pred = torch.zeros(size=(len(
self.z_dataloader['i_test'].dataset), ),
dtype=torch.float32,
device=self.device)
self.o_pred = torch.zeros(size=(len(
self.z_dataloader['o_test'].dataset), ),
dtype=torch.float32,
device=self.device)
self.i_gt_labels = torch.zeros(size=(len(
self.z_dataloader['i_test'].dataset), ),
dtype=torch.long,
device=self.device)
self.o_gt_labels = torch.zeros(size=(len(
self.z_dataloader['o_test'].dataset), ),
dtype=torch.long,
device=self.device)
self.times = []
self.total_steps = 0
epoch_iter = 0
for i, data in enumerate(self.z_dataloader['i_test'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.z_set_input('i', data)
i_pred = self.netc_i(self.i_input)
time_o = time.time()
self.i_pred[i * self.opt.batchsize:i * self.opt.batchsize +
i_pred.size(0)] = i_pred.reshape(i_pred.size(0))
self.i_gt_labels[i *
self.opt.batchsize:i * self.opt.batchsize +
i_pred.size(0)] = self.i_gt.reshape(
self.i_gt.size(0))
self.times.append(time_o - time_i)
for i, data in enumerate(self.z_dataloader['o_test'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.z_set_input('o', data)
o_pred = self.netc_o(self.o_input)
time_o = time.time()
self.o_pred[i * self.opt.batchsize:i * self.opt.batchsize +
o_pred.size(0)] = o_pred.reshape(o_pred.size(0))
self.o_gt_labels[i *
self.opt.batchsize:i * self.opt.batchsize +
o_pred.size(0)] = self.o_gt.reshape(
self.o_gt.size(0))
self.times.append(time_o - time_i)
# Save test images.
# print(auprc(self.i_gt_labels.cpu(), self.i_pred.cpu()))
# print((self.i_gt_labels.cpu()[:10], self.i_pred.cpu())[:10])
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# auc, eer = roc(self.gt_labels, self.an_scores)
self.pred_c = self.i_pred.cpu() * self.opt.w_i + \
self.o_pred.cpu() * self.opt.w_o
# print(self.pred_c[:5])
# print(self.i_gt_labels[:5])
scores = evaluate(self.o_gt_labels.cpu(), self.pred_c,
self.opt.z_metric)
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times),
(self.opt.z_metric, scores)])
if self.opt.display_id > 0 and self.opt.phase == 'test':
counter_ratio = float(epoch_iter) / len(
self.z_dataloader['i_test'].dataset)
self.visualizer.plot_performance(self.epoch, counter_ratio,
performance)
return performance
class Skipganomaly:
"""Skip-GANomaly Class
"""
@property
def name(self):
return 'skip-ganomaly'
def __init__(self, opt, data=None):
# Initalize variables.
self.opt = opt
self.visualizer = Visualizer(opt)
self.data = data
self.trn_dir = os.path.join(self.opt.outf, self.opt.name, 'train')
self.tst_dir = os.path.join(self.opt.outf, self.opt.name, 'test')
self.inf_dir = os.path.join(self.opt.outf, self.opt.name, 'inference')
self.device = torch.device(
"cuda:0" if self.opt.device != "cpu" else "cpu")
# -- Misc attributes
self.epoch = 0
self.times = []
self.total_steps = 0
##
# Create and initialize networks from networks.py.
self.netg = define_G(self.opt,
norm='batch',
use_dropout=False,
init_type='normal')
self.netd = define_D(self.opt,
norm='batch',
use_sigmoid=False,
init_type='normal')
##
#resume Training
if self.opt.resume != '':
print("\nLoading pre-trained networks.")
self.opt.iter = torch.load(
os.path.join(self.opt.resume, 'netG.pth'))['epoch']
self.netg.load_state_dict(
torch.load(os.path.join(self.opt.resume,
'netG.pth'))['state_dict'])
self.netd.load_state_dict(
torch.load(os.path.join(self.opt.resume,
'netD.pth'))['state_dict'])
print("\tDone.\n")
print(self.netg)
print(self.netd)
##
# Loss Functions
self.l_adv = nn.BCELoss()
self.l_con = nn.L1Loss()
self.l_lat = l2_loss
##
# Initialize input tensors.
self.input = torch.empty(size=(self.opt.batchsize, 3, self.opt.isize,
self.opt.isize),
dtype=torch.float32,
device=self.device)
self.noise = torch.empty(size=(self.opt.batchsize, 3, self.opt.isize,
self.opt.isize),
dtype=torch.float32,
device=self.device)
self.label = torch.empty(size=(self.opt.batchsize, ),
dtype=torch.float32,
device=self.device)
self.gt = torch.empty(size=(opt.batchsize, ),
dtype=torch.long,
device=self.device)
self.fixed_input = torch.empty(size=(self.opt.batchsize, 3,
self.opt.isize, self.opt.isize),
dtype=torch.float32,
device=self.device)
self.real_label = torch.ones(size=(self.opt.batchsize, ),
dtype=torch.float32,
device=self.device)
self.fake_label = torch.zeros(size=(self.opt.batchsize, ),
dtype=torch.float32,
device=self.device)
##
# Setup optimizer
if self.opt.phase == "train":
self.netg.train()
self.netd.train()
self.optimizers = []
self.optimizer_d = optim.Adam(self.netd.parameters(),
lr=self.opt.lr,
betas=(self.opt.beta1, 0.999))
self.optimizer_g = optim.Adam(self.netg.parameters(),
lr=self.opt.lr,
betas=(self.opt.beta1, 0.999))
self.optimizers.append(self.optimizer_d)
self.optimizers.append(self.optimizer_g)
self.schedulers = [
get_scheduler(optimizer, opt) for optimizer in self.optimizers
]
##
def set_input(self, input: torch.Tensor, noise: bool = False):
""" Set input and ground truth
Args:
input (FloatTensor): Input data for batch i.
"""
with torch.no_grad():
self.input.resize_(input[0].size()).copy_(input[0])
self.gt.resize_(input[1].size()).copy_(input[1])
self.label.resize_(input[1].size())
# Add noise to the input.
if noise: self.noise.data.copy_(torch.randn(self.noise.size()))
# Copy the first batch as the fixed input.
if self.total_steps == self.opt.batchsize:
self.fixed_input.resize_(input[0].size()).copy_(input[0])
##
def get_errors(self):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
errors = OrderedDict([('err_d', self.err_d), ('err_g', self.err_g),
('err_g_adv', self.err_g_adv),
('err_g_con', self.err_g_con),
('err_g_lat', self.err_g_lat)])
return errors
##
def reinit_d(self):
""" Initialize the weights of netD
"""
self.netd.apply(weights_init)
print('Reloading d net')
##
def get_current_images(self):
""" Returns current images.
Returns:
[reals, fakes, fixed]
"""
reals = self.input.data
fakes = self.fake.data
fixed = self.netg(self.fixed_input)[0].data
return reals, fakes, fixed
##
def save_weights(self, epoch: int, is_best: bool = False):
"""Save netG and netD weights for the current epoch.
Args:
epoch ([int]): Current epoch number.
"""
name = self.opt.dataset if self.opt.dataset else self.opt.dataroot.split(
"/")[-1]
weight_dir = os.path.join(self.opt.outf, name, 'train', 'weights')
if not os.path.exists(weight_dir):
os.makedirs(weight_dir)
if is_best:
torch.save({
'epoch': epoch,
'state_dict': self.netg.state_dict()
}, f'{weight_dir}/netG_best.pth')
torch.save({
'epoch': epoch,
'state_dict': self.netd.state_dict()
}, f'{weight_dir}/netD_best.pth')
else:
torch.save({
'epoch': epoch,
'state_dict': self.netd.state_dict()
}, f"{weight_dir}/netD_{epoch}.pth")
torch.save({
'epoch': epoch,
'state_dict': self.netg.state_dict()
}, f"{weight_dir}/netG_{epoch}.pth")
def load_weights(self, epoch=None, is_best: bool = False, path=None):
""" Load pre-trained weights of NetG and NetD
Keyword Arguments:
epoch {int} -- Epoch to be loaded (default: {None})
is_best {bool} -- Load the best epoch (default: {False})
path {str} -- Path to weight file (default: {None})
Raises:
Exception -- [description]
IOError -- [description]
"""
if epoch is None and is_best is False:
raise Exception(
'Please provide epoch to be loaded or choose the best epoch.')
if is_best:
fname_g = f"netG_best.pth"
fname_d = f"netD_best.pth"
else:
fname_g = f"netG_{epoch}.pth"
fname_d = f"netD_{epoch}.pth"
if path is None:
name = self.opt.dataset if self.opt.dataset else self.opt.dataroot.split(
"/")[-1]
path_g = f"{self.opt.outf}/{name}/train/weights/{fname_g}"
path_d = f"{self.opt.outf}/{name}/train/weights/{fname_d}"
else:
path_g = path + "/" + fname_g
path_d = path + "/" + fname_d
# Load the weights of netg and netd.
print('>> Loading weights...')
if len(self.opt.gpu_ids) == 0:
weights_g = torch.load(
path_g,
map_location=lambda storage, loc: storage)['state_dict']
weights_d = torch.load(
path_d,
map_location=lambda storage, loc: storage)['state_dict']
else:
weights_g = torch.load(path_g)['state_dict']
weights_d = torch.load(path_d)['state_dict']
try:
# create new OrderedDict that does not contain `module.`
new_weights_g = OrderedDict()
new_weights_d = OrderedDict()
for k, v in weights_g.items():
name = k[7:] # remove `module.`
new_weights_g[name] = v
for k, v in weights_d.items():
name = k[7:] # remove `module.`
new_weights_d[name] = v
# load params
if len(self.opt.gpu_ids) == 0:
weights_g = new_weights_g
weights_d = new_weights_d
self.netg.load_state_dict(weights_g)
self.netd.load_state_dict(weights_d)
except IOError:
raise IOError("netG weights not found")
print(' Done.')
def forward(self):
self.forward_g()
self.forward_d()
def forward_g(self):
""" Forward propagate through netG
"""
#TODO: Check, why noised input is used
self.fake = self.netg(self.input + self.noise)
def forward_d(self):
""" Forward propagate through netD
"""
self.pred_real, self.feat_real = self.netd(self.input)
self.pred_fake, self.feat_fake = self.netd(self.fake)
def backward_g(self):
""" Backpropagate netg
"""
self.err_g_adv = self.opt.w_adv * self.l_adv(self.pred_fake,
self.real_label)
self.err_g_con = self.opt.w_con * self.l_con(self.fake, self.input)
self.err_g_lat = self.opt.w_lat * self.l_lat(
self.feat_fake, self.feat_real) # should be named discriminator
if self.opt.verbose:
print(f'err_g_adv: {str(self.err_g_adv)}')
print(f'err_g_con: {str(self.err_g_con)}')
print(f'err_g_lat: {str(self.err_g_lat)}')
self.err_g = self.err_g_adv + self.err_g_con + self.err_g_lat
self.err_g.backward(retain_graph=True)
def backward_d(self):
# Fake
#print(f'pref_fake: {str(self.pred_fake)}')
#print(f'self.fake_label: {str(self.fake_label)}')
#print(f'self.pred_real: {str(self.pred_real)}')
#print(f'self.real_label: {str(self.real_label)}')
self.err_d_fake = self.l_adv(self.pred_fake, self.fake_label)
# Real
# pred_real, feat_real = self.netd(self.input)
self.err_d_real = self.l_adv(self.pred_real, self.real_label)
# Combine losses.
# TODO: According to https://github.com/samet-akcay/skip-ganomaly/issues/18#issue-728932038 ... Check if lat loss has to be negative in discriminator backprob
if self.opt.verbose:
print(f'err_d_real: {str(self.err_d_real)}')
print(f'err_d_fake: {str(self.err_d_fake)}')
print(f'err_g_lat: {str(self.err_g_lat)}')
self.err_d = self.err_d_real + self.err_d_fake + self.err_g_lat
self.err_d.backward(retain_graph=True)
def update_netg(self):
""" Update Generator Network.
"""
self.optimizer_g.zero_grad()
self.backward_g()
def update_netd(self):
""" Update Discriminator Network.
"""
self.optimizer_d.zero_grad()
self.backward_d()
##
def optimize_params(self):
""" Optimize netD and netG networks.
"""
self.forward()
self.update_netg()
self.update_netd()
self.optimizer_g.step()
self.optimizer_d.step()
if self.err_d < 1e-5: self.reinit_d()
##
def train_one_epoch(self):
""" Train the model for one epoch.
"""
self.opt.phase = "train"
self.netg.train()
self.netd.train()
epoch_iter = 0
for data in tqdm(self.data.train,
leave=False,
total=len(self.data.train)):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.set_input(data)
self.optimize_params()
reals, fakes, fixed = self.get_current_images()
errors = self.get_errors()
if self.opt.display:
self.visualizer.plot_current_errors(self.epoch,
self.total_steps, errors)
# Write images to tensorboard
if self.total_steps % self.opt.save_image_freq == 0:
self.visualizer.display_current_images(
reals,
fakes,
fixed,
train_or_test="train",
global_step=self.total_steps)
if self.total_steps % self.opt.save_image_freq == 0:
self.visualizer.save_current_images(self.epoch, reals, fakes,
fixed)
print(">> Training model %s. Epoch %d/%d" %
(self.name, self.epoch + 1, self.opt.niter))
##
def train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best_auc = 0
# Train for niter epochs.
print(
f">> Training {self.name} on {self.opt.dataset} to detect anomalies"
)
for self.epoch in range(self.opt.iter, self.opt.niter):
self.train_one_epoch()
res = self.test()
if res['auc'] > best_auc:
best_auc = res['auc']
self.save_weights(self.epoch, is_best=True)
self.visualizer.print_current_performance(res, best_auc)
print(">> Training model %s.[Done]" % self.name)
##
def test(self, plot_hist=True):
""" Test GANomaly model.
Args:
data ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
self.netg.eval()
self.netd.eval()
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.path_to_weights is not None:
self.load_weights(path=self.opt.path_to_weights, is_best=True)
self.opt.phase = 'test'
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(self.data.valid.dataset), ),
dtype=torch.float32,
device=self.device)
self.gt_labels = torch.zeros(size=(len(self.data.valid.dataset), ),
dtype=torch.long,
device=self.device)
print(" Testing %s" % self.name)
self.times = []
total_steps_test = 0
epoch_iter = 0
i = 0
for data in tqdm(self.data.valid,
leave=False,
total=len(self.data.valid)):
total_steps_test += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
# Forward - Pass
self.forward_for_testing(data)
# Calculate the anomaly score.
error = self.calculate_an_score()
time_o = time.time()
self.an_scores[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = self.gt.reshape(error.size(0))
if self.opt.verbose:
print(f'an_scores: {str(self.an_scores)}')
self.times.append(time_o - time_i)
real, fake, fixed = self.get_current_images()
if self.epoch * len(
self.data.valid
) + total_steps_test % self.opt.save_image_freq == 0:
self.visualizer.display_current_images(
real,
fake,
fixed,
train_or_test="test",
global_step=self.epoch * len(self.data.valid) +
total_steps_test)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test',
'images')
if not os.path.isdir(dst): os.makedirs(dst)
#iterate over them (real) and write anomaly score and ground truth on filename
vutils.save_image(real,
'%s/real_%03d.png' % (dst, i + 1),
normalize=True)
vutils.save_image(fake,
'%s/fake_%03d.png' % (dst, i + 1),
normalize=True)
i = i + 1
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times * 1000)
# Scale error vector between [0, 1]
# self.an_scores = (self.an_scores - torch.min(self.an_scores))/(torch.max(self.an_scores) - torch.min(self.an_scores))
if self.opt.verbose:
print(f'scaled an_scores: {str(self.an_scores)}')
y_trues = self.gt_labels.cpu()
y_preds = self.an_scores.cpu()
# Create data frame for scores and labels.
performance, thresholds, y_preds_man, y_preds_auc = get_performance(
y_trues=y_trues,
y_preds=y_preds,
manual_threshold=self.opt.decision_threshold)
with open(
os.path.join(self.opt.outf,
self.opt.phase + "_results.txt"), "a+") as f:
f.write(str(performance))
f.write("\n")
f.close()
self.visualizer.plot_histogram(
y_trues=y_trues,
y_preds=y_preds,
threshold=performance["threshold"],
save_path=os.path.join(
self.opt.outf,
"histogram_test" + str(self.epoch) + ".png"),
tag="Histogram_Test",
global_step=self.epoch)
self.visualizer.plot_pr_curve(y_trues=y_trues,
y_preds=y_preds,
thresholds=thresholds,
global_step=self.epoch,
tag="PR_Curve_Test")
self.visualizer.plot_roc_curve(
y_trues=y_trues,
y_preds=y_preds,
global_step=self.epoch,
tag="ROC_Curve_Test",
save_path=os.path.join(self.opt.outf,
"roc_test" + str(self.epoch) + ".png"))
self.visualizer.plot_current_conf_matrix(
self.epoch,
performance["conf_matrix"],
tag="Confusion_Matrix_Test",
save_path=os.path.join(self.opt.outf,
self.opt.phase + "_conf_matrix.png"))
self.visualizer.plot_performance(self.epoch,
0,
performance,
tag="Performance_Test")
return performance
def forward_for_testing(self, data):
self.set_input(data)
self.fake = self.netg(self.input)
real_clas, self.feat_real = self.netd(self.input)
fake_clas, self.feat_fake = self.netd(self.fake)
def inference(self):
self.netg.eval()
self.netd.eval()
with torch.no_grad():
self.load_weights(path=self.opt.path_to_weights, is_best=True)
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(
self.data.inference.dataset), ),
dtype=torch.float32,
device=self.device)
self.gt_labels = torch.zeros(size=(len(
self.data.inference.dataset), ),
dtype=torch.long,
device=self.device)
print("Starting Inference!")
inf_time = None
inf_times = []
self.file_names = []
for i, data in tqdm(enumerate(self.data.inference),
leave=False,
total=len(self.data.inference)):
inf_start = time.time()
# Forward - Pass
self.forward_for_testing(data)
# Calculate the anomaly score.
error = self.calculate_an_score()
inf_times.append(time.time() - inf_start)
self.an_scores[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i * self.opt.batchsize:i * self.opt.batchsize +
error.size(0)] = self.gt.reshape(error.size(0))
if self.opt.verbose:
print(f'an_scores: {str(self.an_scores)}')
real, fake, fixed = self.get_current_images()
if i % self.opt.save_image_freq == 0:
self.visualizer.display_current_images(
real,
fake,
fixed,
train_or_test="test_inference",
global_step=i)
self.file_names.append(data[2])
# Measure inference time.
# Scale error vector between [0, 1] TODO: does it work without normalizing?
# self.an_scores = (self.an_scores - torch.min(self.an_scores))/(torch.max(self.an_scores) - torch.min(self.an_scores))
if self.opt.verbose:
print(f'scaled an_scores: {str(self.an_scores)}')
y_trues = self.gt_labels.cpu()
y_preds = self.an_scores.cpu()
inf_time = sum(inf_times)
print(f'Inference time: {inf_time} secs')
print(f'Inference time / individual: {inf_time/len(y_trues)} secs')
# Create data frame for scores and labels.
performance, thresholds, y_preds_man, y_preds_auc = get_performance(
y_trues=y_trues,
y_preds=y_preds,
manual_threshold=self.opt.decision_threshold)
with open(os.path.join(self.opt.outf, self.opt.phase + "_results.txt"),
"w") as f:
f.write(str(performance))
f.close()
self.visualizer.plot_histogram(y_trues=y_trues,
y_preds=y_preds,
threshold=performance["threshold"],
save_path=os.path.join(
self.opt.outf,
"histogram_inference.png"),
tag="Histogram_Inference")
self.visualizer.plot_pr_curve(y_trues=y_trues,
y_preds=y_preds,
thresholds=thresholds,
global_step=1,
tag="PR_Curve_Inference")
self.visualizer.plot_roc_curve(y_trues=y_trues,
y_preds=y_preds,
global_step=1,
tag="ROC_Curve_Inference",
save_path=os.path.join(
self.opt.outf, "roc_inference.png"))
self.visualizer.plot_current_conf_matrix(
1,
performance["conf_matrix"],
tag="Confusion_Matrix_Inference",
save_path=os.path.join(self.opt.outf,
self.opt.phase + "_conf_matrix.png"))
if self.opt.decision_threshold:
self.visualizer.plot_current_conf_matrix(
2,
performance["conf_matrix_man"],
save_path=os.path.join(self.opt.outf, self.opt.phase +
"_conf_matrix_man.png"))
self.visualizer.plot_histogram(
y_trues=y_trues,
y_preds=y_preds,
threshold=performance["manual_threshold"],
global_step=2,
save_path=os.path.join(self.opt.outf,
"histogram_inference_man.png"),
tag="Histogram_Inference")
write_inference_result(file_names=self.file_names,
y_trues=y_trues,
y_preds=y_preds_man,
outf=os.path.join(
self.opt.outf,
"classification_result_man.json"))
self.visualizer.plot_performance(1,
0,
performance,
tag="Performance_Inference")
write_inference_result(file_names=self.file_names,
y_trues=y_trues,
y_preds=y_preds_auc,
outf=os.path.join(self.opt.outf,
"classification_result.json"))
##
# RETURN
return performance
def calculate_an_score(self):
si = self.input.size()
sz = self.feat_real.size()
rec = (self.input - self.fake).view(si[0], si[1] * si[2] * si[3])
lat = (self.feat_real - self.feat_fake).view(sz[0],
sz[1] * sz[2] * sz[3])
rec = torch.mean(torch.pow(rec, 2), dim=1)
lat = torch.mean(torch.pow(lat, 2), dim=1)
#print("lat", lat)
#print("rec", rec)
if self.opt.verbose:
print(f'rec: {str(rec)}')
print(f'lat: {str(lat)}')
error = 0.9 * rec + 0.1 * lat
return error
class BaseModel():
""" Base Model for ganomaly
"""
def __init__(self, opt, dataloader):
##
# Seed for deterministic behavior
self.seed(opt.manualseed)
# Initalize variables.
self.opt = opt
self.visualizer = Visualizer(opt)
self.dataloader = dataloader
self.trn_dir = os.path.join(self.opt.outf, self.opt.name, 'train')
self.tst_dir = os.path.join(self.opt.outf, self.opt.name, 'test')
self.device = torch.device("cuda:0" if self.opt.device != 'cpu' else "cpu")
##
def set_input(self, input:torch.Tensor):
""" Set input and ground truth
Args:
input (FloatTensor): Input data for batch i.
"""
with torch.no_grad():
self.input.resize_(input[0].size()).copy_(input[0])
self.gt.resize_(input[1].size()).copy_(input[1])
self.label.resize_(input[1].size())
# Copy the first batch as the fixed input.
if self.total_steps == self.opt.batchsize:
self.fixed_input.resize_(input[0].size()).copy_(input[0])
##
def seed(self, seed_value):
""" Seed
Arguments:
seed_value {int} -- [description]
"""
# Check if seed is default value
if seed_value == -1:
return
# Otherwise seed all functionality
import random
random.seed(seed_value)
torch.manual_seed(seed_value)
torch.cuda.manual_seed_all(seed_value)
np.random.seed(seed_value)
torch.backends.cudnn.deterministic = True
##
def get_errors(self):
""" Get netD and netG errors.
Returns:
[OrderedDict]: Dictionary containing errors.
"""
errors = OrderedDict([
('err_d', self.err_d.item()),
('err_g', self.err_g.item()),
('err_g_adv', self.err_g_adv.item()),
('err_g_con', self.err_g_con.item()),
('err_g_enc', self.err_g_enc.item())])
return errors
##
def get_current_images(self):
""" Returns current images.
Returns:
[reals, fakes, fixed]
"""
reals = self.input.data
fakes = self.fake.data
fixed = self.netg(self.fixed_input)[0].data
return reals, fakes, fixed
##
def save_weights(self, epoch):
"""Save netG and netD weights for the current epoch.
Args:
epoch ([int]): Current epoch number.
"""
weight_dir = os.path.join(self.opt.outf, self.opt.name, 'train', 'weights')
if not os.path.exists(weight_dir): os.makedirs(weight_dir)
print(weight_dir)
torch.save({'epoch': epoch + 1, 'state_dict': self.netg.state_dict()},
'%s/netG.pth' % (weight_dir))
torch.save({'epoch': epoch + 1, 'state_dict': self.netd.state_dict()},
'%s/netD.pth' % (weight_dir))
##
def train_one_epoch(self, epochNUM):
""" Train the model for one epoch.
"""
self.netg.train()
epoch_iter = 0
ii = 0
num = len(self.dataloader['train'])
for data in tqdm(self.dataloader['train'], leave=False, total=len(self.dataloader['train'])):
self.opt.signalInfo.emit(10 + 0.8 * 85 * (epochNUM / self.opt.niter)*(ii/num),"")
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
self.set_input(data)
# self.optimize()
self.optimize_params()
if self.total_steps % self.opt.print_freq == 0:
errors = self.get_errors()
if self.opt.display:
counter_ratio = float(epoch_iter) / len(self.dataloader['train'].dataset)
self.visualizer.plot_current_errors(self.epoch, counter_ratio, errors)
if self.total_steps % self.opt.save_image_freq == 0:
reals, fakes, fixed = self.get_current_images()
self.visualizer.save_current_images(self.epoch, reals, fakes, fixed)
if self.opt.display:
self.visualizer.display_current_images(reals, fakes, fixed)
ii += 1
message = ">> Training model %s. Epoch %d/%d" % (self.name, self.epoch+1, self.opt.niter)
print(message)
#self.opt.showText.append(message+"\n");
# self.visualizer.print_current_errors(self.epoch, errors)
##
def train(self):
""" Train the model
"""
##
# TRAIN
self.total_steps = 0
best_auc = 0
best_info = None
# Train for niter epochs.
print(">> Training model %s." % self.name)
self.opt.signalInfo.emit(-1,">> Training model {}.".format(self.name))
i = 0
for self.epoch in range(self.opt.iter, self.opt.niter):
# Train for one epoch
self.opt.signalInfo.emit(-1,'正在进行第{}个epoch的训练....'.format(i + 1))
num = self.train_one_epoch(i+1)
i += 1
# self.save_weights(self.epoch)
self.opt.signalInfo.emit(10 + 0.8*85* (i / self.opt.niter),'第{}个epoch的训练完毕！\n正在对该epoch进行测试....'.format(i))
res,info = self.test()
if res['AUC'] > best_auc:
best_auc = res['AUC']
best_info = info
self.save_weights(self.epoch)
infoSTR = ""
for key,value in info.items():
infoSTR += str(key)+":"+str(value)+"\n"
self.opt.signalInfo.emit(10 + 85* (i/ self.opt.niter), '测试完毕！\n第{}个epoch训练结果：\n{}'.format(i, infoSTR))
# self.visualizer.print_current_performance(res, best_auc)
print(">> Training model %s.[Done]" % self.name)
self.opt.signalInfo.emit(-1,">> Training model {}.[Done]".format(self.name))
# dict_info = {}
# dict_info['minVal'] = 0.1
# dict_info['maxVal'] = 0.8
# dict_info['proline'] = 0.40
# dict_info['auc'] = 0.93
# dict_info['Avg Run Time (ms/batch)'] = 9
# best_info = dict_info
return best_info
##
def test(self):
""" Test GANomaly model.
Args:
dataloader ([type]): Dataloader for the test set
Raises:
IOError: Model weights not found.
"""
with torch.no_grad():
# Load the weights of netg and netd.
if self.opt.load_weights:
path = "./output/{}/{}/train/weights/netG.pth".format(self.name.lower(), self.opt.dataset)
pretrained_dict = torch.load(path)['state_dict']
try:
self.netg.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netG weights not found")
print(' Loaded weights.')
self.opt.phase = 'test'
#self.opt.showProcess.setValue(80)
# Create big error tensor for the test set.
self.an_scores = torch.zeros(size=(len(self.dataloader['test'].dataset),), dtype=torch.float32, device=self.device)
self.gt_labels = torch.zeros(size=(len(self.dataloader['test'].dataset),), dtype=torch.long, device=self.device)
self.latent_i = torch.zeros(size=(len(self.dataloader['test'].dataset), self.opt.nz), dtype=torch.float32, device=self.device)
self.latent_o = torch.zeros(size=(len(self.dataloader['test'].dataset), self.opt.nz), dtype=torch.float32, device=self.device)
# print(" Testing model %s." % self.name)
self.times = []
self.total_steps = 0
epoch_iter = 0
for i, data in enumerate(self.dataloader['test'], 0):
self.total_steps += self.opt.batchsize
epoch_iter += self.opt.batchsize
time_i = time.time()
self.set_input(data)
self.fake, latent_i, latent_o = self.netg(self.input)
error = torch.mean(torch.pow((latent_i-latent_o), 2), dim=1)
time_o = time.time()
self.an_scores[i*self.opt.batchsize : i*self.opt.batchsize+error.size(0)] = error.reshape(error.size(0))
self.gt_labels[i*self.opt.batchsize : i*self.opt.batchsize+error.size(0)] = self.gt.reshape(error.size(0))
self.latent_i [i*self.opt.batchsize : i*self.opt.batchsize+error.size(0), :] = latent_i.reshape(error.size(0), self.opt.nz)
self.latent_o [i*self.opt.batchsize : i*self.opt.batchsize+error.size(0), :] = latent_o.reshape(error.size(0), self.opt.nz)
self.times.append(time_o - time_i)
# Save test images.
if self.opt.save_test_images:
dst = os.path.join(self.opt.outf, self.opt.name, 'test', 'images')
if not os.path.isdir(dst):
os.makedirs(dst)
real, fake, _ = self.get_current_images()
vutils.save_image(real, '%s/real_%03d.eps' % (dst, i+1), normalize=True)
vutils.save_image(fake, '%s/fake_%03d.eps' % (dst, i+1), normalize=True)
# Measure inference time.
self.times = np.array(self.times)
self.times = np.mean(self.times[:100] * 1000)
# Scale error vector between [0, 1]
print(torch.min(self.an_scores))
print(torch.max(self.an_scores))
maxNUM = torch.max(self.an_scores)
minNUM = torch.min(self.an_scores)
self.an_scores = (self.an_scores - torch.min(self.an_scores)) / (torch.max(self.an_scores) - torch.min(self.an_scores))
# auc, eer = roc(self.gt_labels, self.an_scores)
# -------------- 处理阈值 ------------------
print('-------------- 处理阈值 ------------------')
print(len(self.gt_labels))
plt.ion()
scores = {}
##plt.ion()
# Create data frame for scores and labels.
scores['scores'] = self.an_scores
scores['labels'] = self.gt_labels
hist = pd.DataFrame.from_dict(scores)
#hist.to_csv("histogram.csv")
# Filter normal and abnormal scores.
abn_scr = hist.loc[hist.labels == 1]['scores']
nrm_scr = hist.loc[hist.labels == 0]['scores']
# Create figure and plot the distribution.
##fig, axes = plt.subplots(figsize=(4, 4))
b = []
c = []
# for i in range(1000):
# b.append(nrm_scr[i])
# for j in range(1000, 3011):
# c.append(abn_scr[j])
print('asasddda')
print(len(nrm_scr))
print(len(abn_scr))
for i in nrm_scr:
b.append(i)
for j in abn_scr:
c.append(j)
##sns.distplot(nrm_scr, label=r'Normal Scores', color='r', bins=100, hist=True)
##sns.distplot(abn_scr, label=r'Abnormal Scores', color='b', bins=100, hist=True)
nrm = np.zeros((50), dtype=np.int)
minfix = 0.4
abn = np.zeros((50), dtype=np.int)
abmin = 30
for k in np.arange(0, 1, 0.02):
kint = int(k * 50)
for j in range(len(nrm_scr)):
if b[j] >= k and b[j] < (k + 0.02):
nrm[kint] = nrm[kint] + 1
for j in range(len(abn_scr)):
if c[j] >= k and c[j] < (k + 0.02):
abn[kint] = abn[kint] + 1
print(nrm)
print(abn)
# startInd = 3
# for k in range(0,20):
# if abs(nrm[k] - abn[k]) <= 3:
# continue
# else:
# startInd = k
# max_dist = (len(nrm) + len(abn))*0.28
# for k in range(startInd, 20):
# if abs(nrm[k] - abn[k]) < 5:
# #max_dist = abs(nrm[k] - abn[k])
# minfix = round((k / 20) + 0.02, 3)
# break
# for k in range(3, 17):
# # print(nrm[k])
# # print(abn[k])
# # print('----')
# if abs(nrm[k]-abn[k]) > abmin and not (nrm[k] == 0 and abn[k] == 0):
# abmin = abs(nrm[k] - abn[k])
# minfix = round((k / 20) + 0.02, 3)
max_dist = (len(nrm) + len(abn)) * 0.25
for k in range(0,50):
num1 = np.sum(nrm[0:k])
num2 = np.sum(abn[k::])
if (num1 + num2) >= max_dist:
minfix = round((k / 50) + 0.05, 3)
max_dist = num1+num2
proline = minfix
print(proline)
print(self.gt_labels[0:20])
print(self.an_scores[0:20])
print('------------- 处理阈值 END --------------')
# ------------- 处理阈值 END --------------
auc = evaluate(self.gt_labels, self.an_scores, metric=self.opt.metric)
performance = OrderedDict([('Avg Run Time (ms/batch)', self.times), ('AUC', auc)])
if self.opt.display_id > 0 and self.opt.phase == 'test':
counter_ratio = float(epoch_iter) / len(self.dataloader['test'].dataset)
self.visualizer.plot_performance(self.epoch, counter_ratio, performance)
# --- 写入文件 ---
dict_info = {}
dict_info['minVal'] = float(minNUM.item())
dict_info['maxVal'] = float(maxNUM.item())
dict_info['proline'] = float(proline)
dict_info['auc'] = float(auc)
dict_info['Avg Run Time (ms/batch)'] = float(self.times)
#self.opt.showText.append(str(performance));
#self.opt.showProcess.setValue(100)
return performance, dict_info
def FinalTest(self, minVal, maxVal,threshold=0.2):
path = "./output/{}/{}/train/weights/netG.pth".format('ganomaly', self.opt.dataset)
print('***'*10)
print(path)
print('***' * 10)
pretrained_dict = torch.load(path)['state_dict']
#self.opt.showText.append('Loading Weights...')
self.opt.signalInfo.emit(-1, '加载权重...')
try:
self.netg.load_state_dict(pretrained_dict)
except IOError:
raise IOError("netG weights not found")
print(' Loaded weights.')
#self.opt.showText.append('LoadedWeights')
self.opt.signalInfo.emit(5,"权重加载完毕！\n正在加载图片....")
#self.opt.showText.append('正在加载图片...')
path2 = self.opt.dataroot + '/final_test/'
transform = transforms.Compose([transforms.Resize(self.opt.isize),
transforms.CenterCrop(self.opt.isize),
transforms.ToTensor(),
transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)), ])
testdata = ImageFolder(os.path.join(path2), transform)
#print(testdata)
testdata2 = torch.utils.data.DataLoader(dataset=testdata,
batch_size=1,
shuffle=False,
num_workers=int(self.opt.workers),
drop_last=True)
#print(testdata2)
self.opt.signalInfo.emit(10, "图片加载完毕！\n正在进行检测....")
testFilesName = os.listdir(self.opt.dataroot+'/final_test/0')
testFilesRes = {}
testFilesResNor = {}
testFilesResAbn = {}
for i, data2 in enumerate(testdata2, 0):
self.set_input(data2)
self.fake, latent_i, latent_o = self.netg(self.input)
error = torch.mean(torch.pow((latent_i - latent_o), 2), dim=1)
#print(error)
testscore = (error - minVal) / (maxVal - minVal)
testFilesRes[testFilesName[i]] = testscore.item()
if testscore.item() >= threshold:
testFilesResAbn[testFilesName[i]] = testscore.item()
else:
testFilesResNor[testFilesName[i]] = testscore.item()
self.opt.signalInfo.emit(10+(i+1)/len(testFilesName)*88,"")
#self.opt.showProcess.setValue()
# print(testFilesRes)
# print(testFilesResNor)
# print(testFilesResAbn)
self.opt.signalInfo.emit(100, "图片检测完毕!")
#self.opt.signal.emit(len(testFilesResNor), len(testFilesResAbn))
torch.cuda.empty_cache()
return testFilesResNor,testFilesResAbn
