def forward(self, output, target1,target2,need_bpp=False):
N, _, H, W = target1.size()
out = {}
num_pixels = N * H * W
# 计算误差
# out['bpp_loss'] = sum(
# (torch.log(likelihoods).sum() / (-math.log(2) * num_pixels))
# for likelihoods in output['likelihoods'].values())
out['mse_loss'] = self.mse(output['x1_hat'], target1) + self.mse(output['x2_hat'], target2) #end to end
if need_bpp:
out['bpp1'] = (torch.log(output['likelihoods']['y1']).sum() / (-math.log(2) * num_pixels)) + (
torch.log(output['likelihoods']['z1']).sum() / (-math.log(2) * num_pixels))
out['bpp2'] = (torch.log(output['likelihoods']['y2']).sum() / (-math.log(2) * num_pixels)) + (
torch.log(output['likelihoods']['z2']).sum() / (-math.log(2) * num_pixels))
out['loss'] = self.lmbda * 255**2 * out['mse_loss'] #+ out['bpp_loss']
out['ms_ssim1'] = ms_ssim(output['x1_hat'], target1, data_range=1, size_average=False)[0] # (N,)
out['ms_ssim2'] = ms_ssim(output['x2_hat'], target2, data_range=1, size_average=False)[0]
out['ms_ssim'] = (out['ms_ssim1']+out['ms_ssim2'])/2
out['psnr1'] = mse2psnr(self.mse(output['x1_hat'], target1))
out['psnr2'] = mse2psnr(self.mse(output['x2_hat'], target2))
return out
def validation_step(self, batch, batch_idx):
inputs, targets = batch
outputs = self.model(inputs)
loss = criterion(outputs, targets)
if self.current_epoch is not None and batch_idx + 1 == len(val_loader):
baseline = F.interpolate(inputs,
scale_factor=scale_factor,
mode='bicubic')
grid = make_grid(torch.cat([targets, baseline, outputs], dim=-1),
nrow=2).clamp(0, 1)
val_writer.add_image('Images From Last Batch', grid,
self.current_epoch)
ssim = pytorch_msssim.ms_ssim(outputs, targets, data_range=1)
psnr = utils.psnr(outputs, targets)
size = len(targets)
self.val_loss.update(loss.item(), size)
self.val_psnr.update(psnr.item(), size)
self.val_ssim.update(ssim.item(), size)
return {
'val_loss': f'{self.val_loss.compute():.4g}',
'psnr': f'{self.val_psnr.compute():.2f}',
'ssim': f'{self.val_ssim.compute():.4f}'
}
def optimize_parameters(self, step):
self.optimizer_G.zero_grad()
self.fake_H = self.netG(self.var_L)
l_g_total = 0
l_pix = self.l_pix_w * self.cri_pix(self.fake_H, self.real_H)
l_g_total += l_pix
if self.cri_CX:
real_fea = self.netF(self.real_H)
fake_fea = self.netF(self.fake_H)
l_CX = self.l_CX_w * self.cri_CX(real_fea, fake_fea)
l_g_total += l_CX
if self.cri_ssim:
if self.cri_ssim == 'ssim':
ssim_val = ssim(self.fake_H, self.real_H, win_size=self.ssim_window, data_range=1.0, size_average=True)
elif self.cri_ssim == 'ms-ssim':
weights = torch.FloatTensor([0.0448, 0.2856, 0.3001, 0.2363]).to(self.fake_H.device, dtype=self.fake_H.dtype)
ssim_val = ms_ssim(self.fake_H, self.real_H, win_size=self.ssim_window, data_range=1.0, size_average=True, weights=weights)
l_ssim = self.l_ssim_w * (1 - ssim_val)
l_g_total += l_ssim
l_g_total.backward()
self.optimizer_G.step()
# set log
self.log_dict['l_pix'] = l_pix.item()
if self.cri_CX:
self.log_dict['l_CX'] = l_CX.item()
if self.cri_ssim:
self.log_dict['l_ssim'] = l_ssim.item()
def forward(self, reconst, original):
MSSSIM = pytorch_msssim.ms_ssim(original,
reconst,
nonnegative_ssim=True).to(device)
MSE = (torch.nn.functional.mse_loss(original, reconst)).to(device)
loss = MSE - MSSSIM + 1
return loss, MSSSIM
def train_step(self, batch, batch_idx):
inputs, targets = batch
outputs = self.model(inputs)
loss = criterion(outputs, targets)
with torch.no_grad():
if batch_idx + 1 == len(train_loader):
indices = torch.randperm(inputs.shape[0])[:2]
baseline = F.interpolate(inputs[indices],
scale_factor=scale_factor,
mode='bicubic')
example = targets[indices], baseline, outputs[indices]
grid = make_grid(torch.cat(example, dim=-1)).clamp(0, 1)
train_writer.add_image('Random Images From Last Batch', grid,
self.current_epoch)
ssim = pytorch_msssim.ms_ssim(outputs, targets, data_range=1)
psnr = utils.psnr(outputs, targets)
size = len(targets)
self.loss.update(loss.item(), size)
self.psnr.update(psnr.item(), size)
self.ssim.update(ssim.item(), size)
return loss, {
'loss': f'{self.loss.compute():.4g}',
'psnr': f'{self.psnr.compute():.2f}',
'ssim': f'{self.ssim.compute():.4f}'
}
def inference(self, label, geo, image=None):
# Encode Inputs
image = Variable(image) if image is not None else None
geometry = Variable(geo) if geo is not None else None
concat_input, real_image = self.encode_input(label,
image,
geometry=geometry,
infer=True)
print(input_label.data.device)
# Fake Generation
if torch.__version__.startswith('0.4'):
with torch.no_grad():
fake_image = self.netG.forward(concat_input)
else:
fake_image = self.netG.forward(concat_input)
metrics = {}
if image is not None: # metrics
GT_image = Variable((real_image + 1.) / 2.)
fake_normalized = (fake_image + 1.) / 2.
metrics['ssim'] = ssim(fake_normalized,
GT_image,
data_range=1,
size_average=False,
nonnegative_ssim=True)
metrics['ms_ssim'] = ms_ssim(fake_normalized,
GT_image,
data_range=1,
size_average=False)
return fake_image, metrics
def compute_metrics_for_frame(
org_frame: Frame,
dec_frame: Frame,
bitdepth: int = 8,
) -> Dict[str, Any]:
org_frame = tuple(p.unsqueeze(0).unsqueeze(0) for p in org_frame) # type: ignore
dec_frame = tuple(p.unsqueeze(0).unsqueeze(0) for p in dec_frame) # type:ignore
out: Dict[str, Any] = {}
max_val = 2**bitdepth - 1
# YCbCr metrics
for i, component in enumerate("yuv"):
out[f"mse-{component}"] = (org_frame[i] - dec_frame[i]).pow(2).mean()
org_rgb = ycbcr2rgb(yuv_420_to_444(org_frame, mode="bicubic").true_divide(max_val)) # type: ignore
dec_rgb = ycbcr2rgb(yuv_420_to_444(dec_frame, mode="bicubic").true_divide(max_val)) # type: ignore
org_rgb = (org_rgb * max_val).clamp(0, max_val).round()
dec_rgb = (dec_rgb * max_val).clamp(0, max_val).round()
mse_rgb = (org_rgb - dec_rgb).pow(2).mean()
ms_ssim_rgb = ms_ssim(org_rgb, dec_rgb, data_range=max_val)
out.update({"ms-ssim-rgb": ms_ssim_rgb, "mse-rgb": mse_rgb})
return out
def compute_metrics_for_frame(
org_frame: Frame,
rec_frame: Tensor,
device: str = "cpu",
max_val: int = 255,
) -> Dict[str, Any]:
out: Dict[str, Any] = {}
# YCbCr metrics
org_yuv = to_tensors(org_frame, device=str(device), max_value=max_val)
org_yuv = tuple(p.unsqueeze(0).unsqueeze(0) for p in org_yuv) # type: ignore
rec_yuv = convert_rgb_to_yuv420(rec_frame)
for i, component in enumerate("yuv"):
org = (org_yuv[i] * max_val).clamp(0, max_val).round()
rec = (rec_yuv[i] * max_val).clamp(0, max_val).round()
out[f"psnr-{component}"] = 20 * np.log10(max_val) - 10 * torch.log10(
(org - rec).pow(2).mean()
)
out["psnr-yuv"] = (4 * out["psnr-y"] + out["psnr-u"] + out["psnr-v"]) / 6
# RGB metrics
org_rgb = convert_yuv420_to_rgb(
org_frame, device, max_val
) # ycbcr2rgb(yuv_420_to_444(org_frame, mode="bicubic")) # type: ignore
org_rgb = (org_rgb * max_val).clamp(0, max_val).round()
rec_frame = (rec_frame * max_val).clamp(0, max_val).round()
mse_rgb = (org_rgb - rec_frame).pow(2).mean()
psnr_rgb = 20 * np.log10(max_val) - 10 * torch.log10(mse_rgb)
ms_ssim_rgb = ms_ssim(org_rgb, rec_frame, data_range=max_val)
out.update({"ms-ssim-rgb": ms_ssim_rgb, "mse-rgb": mse_rgb, "psnr-rgb": psnr_rgb})
return out
def calculate_mssim(minibatch, reconstr_image, size_average=True):
""" compute the ms-sim between an image and its reconstruction
:param minibatch: the input minibatch
:param reconstr_image: the reconstructed image
:returns: the msssim score
:rtype: float
"""
if minibatch.dim() == 5 and reconstr_image.dim(
) == 5: # special case where we have temporal dim
msssim = torch.cat([
calculate_mssim(minibatch[:, i, ::],
reconstr_image[:, i, ::],
size_average=size_average).unsqueeze(-1)
for i in range(minibatch.shape[1])
], -1)
return torch.mean(msssim, -1)
smallest_dim = min(minibatch.shape[-1], minibatch.shape[-2])
if minibatch.dtype != reconstr_image.dtype:
minibatch = minibatch.type(reconstr_image.dtype)
if smallest_dim < 160: # Limitation of ms-ssim library due to 4x downsample
return 1 - ssim(X=minibatch,
Y=reconstr_image,
data_range=1,
size_average=size_average,
nonnegative_ssim=True)
return 1 - ms_ssim(
X=minibatch, Y=reconstr_image, data_range=1, size_average=size_average)
def calc_baseline(loader,
scale_factor=2,
use_cuda=torch.cuda.is_available(),
method='bicubic',
criterion=nn.L1Loss()):
loss, psnr_, ssim = WeightedAveragedMetric(), WeightedAveragedMetric(
), WeightedAveragedMetric()
with tqdm(loader, desc='Baseline') as bar:
for inputs, targets in bar:
if use_cuda:
inputs = inputs.cuda()
targets = targets.cuda()
resized = F.interpolate(inputs,
scale_factor=scale_factor,
mode=method)
size = len(targets)
loss.update(criterion(resized, targets).item(), size)
psnr_.update(psnr(resized, targets).item(), size)
ssim.update(
pytorch_msssim.ms_ssim(resized, targets, data_range=1).item(),
size)
bar.set_postfix({
'loss': f'{loss.compute():.4g}',
'psnr': f'{psnr_.compute():.2f}',
'ssim': f'{ssim.compute():.4f}'
})
def norm(img1, img2):
criterion = nn.MSELoss()
loss_r = criterion(img1,img2)
print("loss_r:" + str(loss_r.item()))
SSIM_h=1-pytorch_msssim.ssim(img1,img2)
print("SSIM_h:"+str(SSIM_h.item()))
MS_SSIM_h=1-pytorch_msssim.ms_ssim(img1,img2)
print("MS_SSIM_h:"+str(MS_SSIM_h.item()))
def recons_loss(recon_x, x):
# msssim 多尺度结构相似损失函数：基于多层（图片按照一定规则，由大到小缩放）的SSIM损失函数，相当于考虑了分辨率
msssim = ((1-pytorch_msssim.ms_ssim(x,recon_x)))/2 #一种优化过的ssim算法
#作者结合神经科学的研究，认为我们人类衡量两幅图的距离时，
# 更偏重于两图的结构相似性，而不是逐像素计算两图的差异。因此作者提出了基于 structural similarity 的度量，声称其比 MSE 更能反映人类视觉系统对两幅图相似性的判断。
f1 = F.l1_loss(recon_x, x) #l1损失：基于逐像素比较差异，然后取绝对值 l2损失：逐像素比较差异 取平方
#L2损失函数会放大最大误差和最小误差之间的差距（比如2*2 和0.1*0.1），另外L2损失函数对异常点也比较敏感
#论文证明 MS-SSIM+L1损失函数是最好的
#作者这样组合的原因是，MS-SSIM容易导致亮度的改变和颜色的偏差，但它能保留高频信息（图像的边缘和细节），
# 而L1损失函数能较好的保持亮度和颜色不变化。公式中α为0.84，是作者试验出来的，而G为高斯分布参数（MS-SSIM里面也要用到这个） Lmix = α*Lmsssim + (1-α)*G*L1 G是高斯分布函数
return msssim+f1
def evaluate_ms_ssim(conf):
# create DataLoader
loader = create_databunch(conf["data_path"], conf["fourier"],
conf["source_list"], conf["batch_size"])
model_path = conf["model_path"]
out_path = Path(model_path).parent / "evaluation"
out_path.mkdir(parents=True, exist_ok=True)
img_size = loader.dataset[0][0][0].shape[-1]
model = load_pretrained_model(conf["arch_name"], conf["model_path"],
img_size)
if conf["model_path_2"] != "none":
model_2 = load_pretrained_model(conf["arch_name_2"],
conf["model_path_2"], img_size)
vals = []
if img_size < 160:
click.echo("\nThis is only a placeholder!\
Images too small for meaningful ms ssim calculations.\n")
# iterate trough DataLoader
for i, (img_test, img_true) in enumerate(tqdm(loader)):
pred = eval_model(img_test, model)
if conf["model_path_2"] != "none":
pred_2 = eval_model(img_test, model_2)
pred = torch.cat((pred, pred_2), dim=1)
ifft_truth = get_ifft(img_true, amp_phase=conf["amp_phase"])
ifft_pred = get_ifft(pred, amp_phase=conf["amp_phase"])
if img_size < 160:
ifft_truth = pad_unsqueeze(torch.tensor(ifft_truth))
ifft_pred = pad_unsqueeze(torch.tensor(ifft_pred))
vals.extend([
ms_ssim(pred.unsqueeze(0),
truth.unsqueeze(0),
data_range=truth.max())
for pred, truth in zip(ifft_pred, ifft_truth)
])
click.echo("\nCreating ms-ssim histogram.\n")
vals = torch.tensor(vals)
histogram_ms_ssim(
vals,
out_path,
plot_format=conf["format"],
)
click.echo(f"\nThe mean ms-ssim value is {vals.mean()}.\n")
def run_tests(
num_samples=32,
):
l1_losses = []
l2_losses = []
psnr_losses = []
gots = []
num=100
with torch.no_grad():
for i, (c2w, lp) in enumerate(zip(tqdm(cam_to_worlds[:num]), light_locs)):
exp = exp_imgs[i].clamp(min=0, max=1)
cameras = NeRFCamera(cam_to_world=c2w.unsqueeze(0), focal=focal, device=device)
lights = PointLights(intensity=[1,1,1], location=lp[None,...], scale=300, device=device)
got = None
for _ in range(num_samples):
sample = pt.pathtrace(
density_field,
size=SIZE, chunk_size=min(SIZE, 100), bundle_size=1, bsdf=learned_bsdf,
integrator=integrator,
# 0 is for comparison, 1 is for display
background=0,
cameras=cameras, lights=lights, device=device, silent=True,
w_isect=True,
)[0]
if got is None: got = sample
else: got += sample
got /= num_samples
got = got.clamp(min=0, max=1)
save_plot(
exp ** (1/2.2), got ** (1/2.2),
f"outputs/path_nerv_armadillo_{i:03}.png",
)
l1_losses.append(F.l1_loss(exp,got).item())
mse = F.mse_loss(exp,got)
l2_losses.append(mse.item())
psnr = mse2psnr(mse).item()
psnr_losses.append(psnr)
gots.append(got)
print("Avg l1 loss", np.mean(l1_losses))
print("Avg l2 loss", np.mean(l2_losses))
print("Avg PSNR loss", np.mean(psnr_losses))
with torch.no_grad():
gots = torch.stack(gots, dim=0).permute(0, 3, 1, 2)
exps = torch.stack(exp_imgs[:num], dim=0).permute(0, 3, 1, 2)
# takes a lot of memory
torch.cuda.empty_cache()
ssim_loss = ms_ssim(gots, exps, data_range=1, size_average=True).item()
print("MS-SSIM loss", ssim_loss)
ssim_loss = ssim(gots, exps, data_range=1, size_average=True).item()
print("SSIM loss", ssim_loss)
return
def compute_metrics(a: Union[np.array, Image.Image],
b: Union[np.array, Image.Image],
max_val: float = 255.) -> Tuple[float, float]:
"""Returns PSNR and MS-SSIM between images `a` and `b`. """
if isinstance(a, Image.Image):
a = np.asarray(a)
if isinstance(b, Image.Image):
b = np.asarray(b)
a = torch.from_numpy(a.copy()).float().unsqueeze(0)
if a.size(3) == 3:
a = a.permute(0, 3, 1, 2)
b = torch.from_numpy(b.copy()).float().unsqueeze(0)
if b.size(3) == 3:
b = b.permute(0, 3, 1, 2)
mse = torch.mean((a - b)**2).item()
p = 20 * np.log10(max_val) - 10 * np.log10(mse)
m = ms_ssim(a, b, data_range=max_val).item()
return p, m
def calc_metrics(img_gt, img_out, hfen):
''' compute vif, mssim, ssim, and psnr of img_out using img_gt as ground-truth reference
note: for msssim, made a slight mod to source code in line 200 of
/home/vanveen/heck/lib/python3.8/site-packages/pytorch_msssim/ssim.py
to compute msssim over images w smallest dim >=160 '''
img_gt, img_out = norm_imgs(img_gt, img_out)
img_gt, img_out = np.array(img_gt), np.array(img_out)
vif_ = vifp_mscale(img_gt, img_out, sigma_nsq=img_out.mean())
ssim_ = ssim(img_gt, img_out)
psnr_ = psnr(img_gt, img_out)
img_out_ = torch.from_numpy(np.array([[img_out]]))
img_gt_ = torch.from_numpy(np.array([[img_gt]]))
msssim_ = float(ms_ssim(img_out_, img_gt_, data_range=img_gt_.max()))
hfen_ = 10000 * float(hfen(img_gt_.float(), img_out_.float()))
return vif_, msssim_, ssim_, psnr_, hfen_
def inference(model, x):
x = x.unsqueeze(0)
h, w = x.size(2), x.size(3)
p = 64 # maximum 6 strides of 2
new_h = (h + p - 1) // p * p
new_w = (w + p - 1) // p * p
padding_left = (new_w - w) // 2
padding_right = new_w - w - padding_left
padding_top = (new_h - h) // 2
padding_bottom = new_h - h - padding_top
x_padded = F.pad(
x,
(padding_left, padding_right, padding_top, padding_bottom),
mode="constant",
value=0,
)
with torch.no_grad():
start = time.time()
out_enc = model.compress(x_padded)
enc_time = time.time() - start
start = time.time()
out_dec = model.decompress(out_enc["strings"], out_enc["shape"])
dec_time = time.time() - start
out_dec["x_hat"] = F.pad(
out_dec["x_hat"],
(-padding_left, -padding_right, -padding_top, -padding_bottom))
num_pixels = x.size(0) * x.size(2) * x.size(3)
bpp = sum(len(s[0]) for s in out_enc["strings"]) * 8.0 / num_pixels
return {
"psnr": psnr(x, out_dec["x_hat"]),
"ms-ssim": ms_ssim(x, out_dec["x_hat"], data_range=1.0).item(),
"bpp": bpp,
"encoding_time": enc_time,
"decoding_time": dec_time,
}
def inference(model, x):
x = x.unsqueeze(0)
h, w = x.size(2), x.size(3)
p = 64 # maximum 6 strides of 2
new_h = (h + p - 1) // p * p
new_w = (w + p - 1) // p * p
padding_left = (new_w - w) // 2
padding_right = new_w - w - padding_left
padding_top = (new_h - h) // 2
padding_bottom = new_h - h - padding_top
x_padded = F.pad(
x, (padding_left, padding_right, padding_top, padding_bottom),
mode='constant',
value=0)
with torch.no_grad():
start = time.time()
out_enc = model.compress(x_padded)
enc_time = time.time() - start
start = time.time()
out_dec = model.decompress(out_enc['strings'], out_enc['shape'])
dec_time = time.time() - start
out_dec['x_hat'] = F.pad(
out_dec['x_hat'],
(-padding_left, -padding_right, -padding_top, -padding_bottom))
num_pixels = x.size(0) * x.size(2) * x.size(3)
bpp = sum(len(s[0]) for s in out_enc['strings']) * 8. / num_pixels
return {
'psnr': psnr(x, out_dec['x_hat']),
'msssim': ms_ssim(x, out_dec['x_hat'], data_range=1.).item(),
'bpp': bpp,
'encoding_time': enc_time,
'decoding_time': dec_time,
}
def process(self, inputs, outputs):
"""
Args:
inputs: the inputs to a CFPN model. input dicts must contain an 'image' key
outputs: the outputs of a CFPN model. It is a list of dicts with key
"instances" that contains :class:`Instances`.
The :class:`Instances` object needs to have `densepose` field.
"""
assert (len(inputs) == 1)
# reshape the input image to have a maximum length of 512 as the model preprocesses
# Much shuffling of data, but also the dataset is only 24 images
orig_image = inputs[0]['image'].permute(1, 2, 0)
orig_image = self.transform.get_transform(orig_image).apply_image(
orig_image.numpy())
orig_image = torch.tensor(orig_image).permute(2, 0, 1)
orig_image = torch.unsqueeze(orig_image, dim=0).float().to(
outputs[self.eval_img].get_device())
reconstruct_image = outputs[self.eval_img].float()
reconstruct_image = reconstruct_image[:, :, 0:orig_image.shape[2],
0:orig_image.shape[3]]
assert orig_image.shape[1] == 3, "original image must have 3 channels"
assert reconstruct_image.shape[
1] == 3, "reconstructed image must have 3 channels"
with torch.no_grad():
ssim_val = ssim(reconstruct_image,
orig_image,
data_range=255,
size_average=False)
ms_ssim_val = ms_ssim(reconstruct_image,
orig_image,
data_range=255,
size_average=False)
self.ssim_vals.extend(ssim_val)
self.ms_ssim_vals.extend(ms_ssim_val)
def validation(NORMAL_NUM, iteration, generator, discriminator, real_data,
fake_data, is_end, AUC_LIST, END_ITER):
generator.eval()
discriminator.eval()
# resnet.eval()
y = []
score = []
normal_gsvdd = []
abnormal_gsvdd = []
normal_recon = []
abnormal_recon = []
test_root = '/home/user/Documents/Public_Dataset/MVTec_AD/{}/test/'.format(
NORMAL_NUM)
list_test = os.listdir(test_root)
with torch.no_grad():
for i in range(len(list_test)):
current_defect = list_test[i]
# print(current_defect)
test_path = test_root + "{}".format(current_defect)
valid_dataset_loader = load_test(test_path, sample_rate=1.)
for index, (images, label) in enumerate(valid_dataset_loader):
# img = five_crop_ready(images)
img_tmp = images.to(device)
img_tmp = img_tmp.unfold(2, 32,
p_stride).unfold(3, 32, p_stride)
# img = extract_patch(img_tmp)
img_tmp = img_tmp.permute(0, 2, 3, 1, 4, 5)
img = img_tmp.reshape(-1, 3, 32, 32)
latent_z = generator.encoder(img)
generate_result = generator(img)
weight = 0.85
ms_ssim_batch_wise = 1 - ms_ssim(img,
generate_result,
data_range=data_range,
size_average=False,
win_size=3,
weights=ssim_weights)
l1_batch_wise = (img - generate_result) / data_range
l1_batch_wise = l1_batch_wise.mean(1).mean(1).mean(1)
ms_ssim_l1 = weight * ms_ssim_batch_wise + (
1 - weight) * l1_batch_wise
diff = (latent_z - generator.c)**2
dist = -1 * torch.sum(diff, dim=1) / generator.sigma
guass_svdd_loss = 1 - torch.exp(dist)
anormaly_score = (
(0.5 * ms_ssim_l1 +
0.5 * guass_svdd_loss).max()).cpu().detach().numpy()
score.append(float(anormaly_score))
if label[0] == "good":
# if is_end:
# normal_gsvdd.append(float(guass_svdd_loss.max().cpu().detach().numpy()))
# normal_recon.append(float(ms_ssim_l1.max().cpu().detach().numpy()))
y.append(0)
else:
# if is_end:
# abnormal_gsvdd.append(float(guass_svdd_loss.max().cpu().detach().numpy()))
# abnormal_recon.append(float(ms_ssim_l1.max().cpu().detach().numpy()))
y.append(1)
###################################################
# if is_end:
# Helper.plot_2d_chart(x1=numpy.arange(0, len(normal_gsvdd)), y1=normal_gsvdd, label1='normal_loss',
# x2=numpy.arange(len(normal_gsvdd), len(normal_gsvdd) + len(abnormal_gsvdd)),
# y2=abnormal_gsvdd, label2='abnormal_loss',
# title="{}: {}".format(NORMAL_NUM, "gsvdd loss"),
# save_path="./plot/{}_gsvdd".format(NORMAL_NUM))
# # if True:
# Helper.plot_2d_chart(x1=numpy.arange(0, len(normal_recon)), y1=normal_recon, label1='normal_loss',
# x2=numpy.arange(len(normal_recon), len(normal_recon) + len(abnormal_recon)),
# y2=abnormal_recon, label2='abnormals_loss',
# title="{}: {}".format(NORMAL_NUM, "recon loss"),
# save_path="./plot/{}_gsvdd_{}".format(NORMAL_NUM, iteration))
fpr, tpr, thresholds = metrics.roc_curve(y, score, pos_label=1)
auc_result = auc(fpr, tpr)
AUC_LIST.append(auc_result)
# tqdm.write(str(auc_result), end='.....................')
auc_file = open(ckpt_path + "/auc.txt", "a")
auc_file.write('Iter {}: {}\r\n'.format(str(iteration),
str(auc_result)))
auc_file.close()
if iteration == END_ITER - 1:
auc_file = open(ckpt_path + "/auc.txt", "a")
auc_file.write('BEST AUC -> {}\r\n'.format(max(AUC_LIST)))
auc_file.close()
return auc_result, AUC_LIST
def train(args, NORMAL_NUM, generator, discriminator, optimizer_g,
optimizer_d):
generator = generator.to(device)
discriminator = discriminator.to(device)
generator.train()
discriminator.train()
AUC_LIST = []
global test_auc
test_auc = 0
BEST_AUC = 0
train_path = '/home/user/Documents/Public_Dataset/MVTec_AD/{}/train/good'.format(
NORMAL_NUM)
START_ITER = 0
train_size = len(os.listdir(train_path))
END_ITER = int((train_size / BATCH_SIZE) * MAX_EPOCH)
# END_ITER = 40500
train_dataset_loader, train_size = load_train(train_path, args.sample_rate)
generator.c = None
generator.sigma = None
generator.c = init_c(train_dataset_loader, generator)
generator.sigma = init_sigma(train_dataset_loader, generator)
print("gsvdd_sigma: {}".format(generator.sigma))
train_data = iter(train_dataset_loader)
process = tqdm(range(START_ITER, END_ITER), desc='{AUC: }')
for iteration in process:
poly_lr_scheduler(optimizer_d,
init_lr=LR,
iter=iteration,
max_iter=END_ITER)
poly_lr_scheduler(optimizer_g,
init_lr=LR,
iter=iteration,
max_iter=END_ITER)
# --------------------- Loader ------------------------
batch = next(train_data, None)
if batch is None:
# train_dataset_loader = load_train(train_path)
train_data = iter(train_dataset_loader)
batch = train_data.next()
batch = batch[0] # batch[1] contains labels
batch_data = batch.to(device)
data_tmp = batch_data.unfold(2, 32, p_stride).unfold(3, 32, p_stride)
data_tmp = data_tmp.permute(0, 2, 3, 1, 4, 5)
real_data = data_tmp.reshape(-1, 3, 32, 32)
# --------------------- TRAIN E ------------------------
optimizer_g.zero_grad()
latent_z = generator.encoder(real_data)
fake_data = generator(real_data)
b, _ = latent_z.shape
# Reconstruction loss
weight = 0.85
ms_ssim_batch_wise = 1 - ms_ssim(real_data,
fake_data,
data_range=data_range,
size_average=True,
win_size=3,
weights=ssim_weights)
l1_batch_wise = l1_criterion(real_data, fake_data) / data_range
ms_ssim_l1 = weight * ms_ssim_batch_wise + (1 - weight) * l1_batch_wise
############ Interplote ############
e1 = torch.flip(latent_z, dims=[0])
alpha = torch.FloatTensor(b, 1).uniform_(0, 0.5).to(device)
e2 = alpha * latent_z + (1 - alpha) * e1
g2 = generator.generate(e2)
reg_inter = torch.mean(discriminator(g2)**2)
############ DSVDD ############
diff = (latent_z - generator.c)**2
dist = -1 * (torch.sum(diff, dim=1) / generator.sigma)
svdd_loss = torch.mean(1 - torch.exp(dist))
encoder_loss = ms_ssim_l1 + svdd_loss + 0.1 * reg_inter
encoder_loss.backward()
optimizer_g.step()
############ Discriminator ############
optimizer_d.zero_grad()
g2 = generator.generate(e2).detach()
fake_data = generator(real_data).detach()
d_loss_front = torch.mean((discriminator(g2) - alpha)**2)
gamma = 0.2
tmp = fake_data + gamma * (real_data - fake_data)
d_loss_back = torch.mean(discriminator(tmp)**2)
d_loss = d_loss_front + d_loss_back
d_loss.backward()
optimizer_d.step()
if iteration % int(
(train_size / BATCH_SIZE) * 10) == 0 and iteration != 0:
generator.sigma = init_sigma(train_dataset_loader, generator)
generator.c = init_c(train_dataset_loader, generator)
if recorder is not None:
recorder.record(loss=svdd_loss,
epoch=int(iteration / BATCH_SIZE),
num_batches=len(train_data),
n_batch=iteration,
loss_name='DSVDD')
recorder.record(loss=torch.mean(dist),
epoch=int(iteration / BATCH_SIZE),
num_batches=len(train_data),
n_batch=iteration,
loss_name='DIST')
recorder.record(loss=ms_ssim_batch_wise,
epoch=int(iteration / BATCH_SIZE),
num_batches=len(train_data),
n_batch=iteration,
loss_name='MS-SSIM')
recorder.record(loss=l1_batch_wise,
epoch=int(iteration / BATCH_SIZE),
num_batches=len(train_data),
n_batch=iteration,
loss_name='L1')
if iteration % int(
(train_size / BATCH_SIZE) * 10) == 0 or iteration == END_ITER - 1:
is_end = True if iteration == END_ITER - 1 else False
test_auc, AUC_LIST = validation(NORMAL_NUM, iteration, generator,
discriminator, real_data,
fake_data, is_end, AUC_LIST,
END_ITER)
process.set_description("{AUC: %.5f}" % test_auc)
torch.save(optimizer_g.state_dict(),
ckpt_path + '/optimizer/g_opt.pth')
torch.save(optimizer_d.state_dict(),
ckpt_path + '/optimizer/d_opt.pth')
for i in range(999999999):
for k in range(batchSize):
trainData[k] = torch.from_numpy(dReader.readImg()).float().cuda()
if (i == 0):
trainDataRgbFilter = rgbCompress.createRGGB121Filter(trainData).cuda()
testDataRgbFilter = rgbCompress.createRGGB121Filter(testData).cuda()
optimizer.zero_grad()
decData = recNet(trainData * trainDataRgbFilter)
currentMSEL = F.mse_loss(decData, trainData)
currentMS_SSIM = pytorch_msssim.ms_ssim(trainData, decData, data_range=1, size_average=True)
if (torch.isnan(currentMS_SSIM)):
currentMS_SSIM.zero_()
loss = - currentMS_SSIM.item()
print('%.3f' % currentMS_SSIM.item(), '%.3f' % currentMSEL.item())
if (currentMS_SSIM.item() > -0.7):
currentMSEL.backward()
else:
currentMS_SSIM.backward()
if (i == 0):
minLoss = loss
else:
encNet = torch.load('./models/encNet_16.pkl', map_location='cuda:0').cuda()
decNet = torch.load('./models/decNet_16.pkl', map_location='cuda:0').cuda()
MSELoss = nn.MSELoss()
img = Image.open('./test.bmp').convert('L')
inputData = torch.from_numpy(
numpy.asarray(img).astype(float).reshape([1, 1, 256, 256])).float().cuda()
encData = encNet(inputData)
qEncData = quantize(encData, 4)
decData = decNet(qEncData / 3)
MSEL = MSELoss(inputData, decData)
img1 = inputData.clone()
img2 = decData.clone()
img1.detach_()
img2.detach_()
img2[img2 < 0] = 0
img2[img2 > 255] = 255
MS_SSIM = pytorch_msssim.ms_ssim(img1, img2, data_range=255, size_average=True)
print('MSEL=', '%.3f' % MSEL.item(), 'MS_SSIM=', '%.3f' % MS_SSIM)
img2 = img2.cpu().numpy().astype(int).reshape([256, 256])
img2 = Image.fromarray(img2.astype('uint8')).convert('L')
img2.save('./output/output.bmp')
img1 = img1.cpu().numpy().astype(int).reshape([256, 256])
img1 = Image.fromarray(img1.astype('uint8')).convert('L')
img1.save('./output/input.bmp')
numpy.save('./output/output.npy', qEncData.detach().cpu().numpy().astype(int))
def pytorch_ms_ssim(preds, target, data_range, kernel_size):
return ms_ssim(preds, target, data_range=data_range, win_size=kernel_size)
def msssim(pred_batch, gt_batch):
ms_ssim_loss = 1 - ms_ssim(pred_batch, gt_batch, data_range=1, win_size=7)
return ms_ssim_loss
def compute_msssim(image1, image2):
return ms_ssim(image1, image2, data_range=1, size_average=True)
def rec_loss(attr_images, generated_images, a):
ms_ssim_loss = 1 - ms_ssim(
attr_images, generated_images, data_range=1, size_average=True)
l1_loss_value = l1_criterion(attr_images, generated_images)
return a * ms_ssim_loss + (1 - a) * l1_loss_value
defMaxLossOfTrainData = 0
for j in range(16): # 每16批 当作一个训练单元 统计这16批数据的表现
for k in range(batchSize):
trainData[k] = torch.from_numpy(dReader.readImg()).float().cuda()
optimizer.zero_grad()
encData = encNet(trainData)
qEncData = quantize(encData)
decData = decNet(qEncData)
currentMSEL = MSELoss(trainData, decData)
currentMS_SSIM = pytorch_msssim.ms_ssim(trainData,
decData,
data_range=255,
size_average=True)
#currentEdgeMSEL = extendMSE.EdgeMSELoss(trainData, decData)
if (currentMSEL > 500):
loss = currentMSEL
else:
loss = -currentMS_SSIM
if (defMaxLossOfTrainData == 0):
maxLossOfTrainData = loss
maxLossTrainMSEL = currentMSEL
maxLossTrainMS_SSIM = currentMS_SSIM
#maxLossTrainEdgeMSEL = currentEdgeMSEL
defMaxLossOfTrainData = 1
optimizer.zero_grad()
trainGrayData = rgbCompress.RGB444DetachToRGGBTensor(
trainData, rgbKernelList, True)
encData = encNet(trainGrayData / 255)
qEncData = torch.zeros_like(encData)
for ii in range(encData.shape[0]):
qEncData[ii] = softToHardQuantize.sthQuantize(encData[ii], C, sigma)
decData = decNet(qEncData) * 255
currentMSEL = F.mse_loss(trainGrayData, decData)
currentMS_SSIM = pytorch_msssim.ms_ssim(trainGrayData,
decData,
win_size=7,
data_range=255,
size_average=True)
if (torch.isnan(currentMS_SSIM)):
currentMS_SSIM.zero_()
loss = -currentMS_SSIM.item()
print('%.3f' % currentMS_SSIM.item())
if (currentMS_SSIM.item() > -0.7):
currentMSEL.backward()
else:
currentMS_SSIM.backward()
if (i == 0):
def compute_msssim(a, b):
return ms_ssim(a, b, data_range=1.).item()