def load_burst_n2n_model(cfg):
# -- init --
init_lr = cfg.init_lr
# -- load kpn model --
kpn,_ = load_model_kpn_1f(cfg)
# -- load unet info --
unet_info = edict()
unet_info.model = UNet_n2n( 1,3,3)
cfg.init_lr = 1e-4
unet_info.optim = load_optimizer(cfg,unet_info.model)
unet_info.S = None
# -- load noise critic info --
disc_model = DCGAN_D(64, -1,3,64,1,0)
disc_model = disc_model.cuda(cfg.gpuid)
cfg.init_lr = 1*1e-4
sim_params = edict({'mean':0,'std':25./255,'noise_type':'gaussian'})
disc_optim = load_optimizer_gan(cfg,disc_model)
noise_critic = NoiseCriticModel(disc_model,disc_optim,sim_params,cfg.device)
# -- create burstaligned model --
model = BurstAlignN2N(kpn,unet_info,noise_critic)
criterion = BurstRecLoss(noise_critic,alpha=1.0)
# -- model models to cuda --
model = model.cuda(cfg.gpuid)
model.unet_info.model = model.unet_info.model.cuda(cfg.gpuid)
# -- finally --
cfg.init_lr = init_lr
return model,criterion
def load_burst_kpn_model(cfg):
# -- init --
init_lr = cfg.init_lr
# -- load alignment model --
align_info = edict()
align_info.model, _ = load_model_kpn_1f_cls_cascade(cfg)
align_info.optim = load_optimizer(cfg, align_info.model)
align_info.S = None
# -- load denoising model --
denoiser_info = edict()
denoiser_info.model, _ = load_model_kpn_cascade(cfg)
# denoiser_info.model,_ = load_model_kpn(cfg,cfg.N)
denoiser_info.optim = load_optimizer(cfg, denoiser_info.model)
denoiser_info.S = None
# -- load unet model --
unet_info = edict()
unet_info.model = load_model_unet(cfg).to(cfg.device)
# unet_info.model = load_model_unet(cfg).to(cfg.device)
# unet_info.model = init_net(unet_info.model)
# unet_info.model,_ = load_model_kpn(cfg,cfg.N)
unet_info.optim = load_optimizer(cfg, unet_info.model)
unet_info.S = None
# -- create burstaligned model --
use_align = cfg.burst_use_alignment
use_unet = cfg.burst_use_unet
use_unet_only = cfg.burst_use_unet_only
criterion = BurstRecLoss(alpha=1.0)
model = BurstAlignSG(align_info,
denoiser_info,
unet_info,
use_alignment=use_align,
use_unet=use_unet,
use_unet_only=use_unet_only,
kpn_num_frames=cfg.kpn_num_frames)
# -- load noise critic info --
disc_model = DCGAN_D(64, -1, 3, 64, 1, 0)
disc_model = disc_model.cuda(cfg.gpuid)
cfg.init_lr = 1 * 1e-4
sim_params = edict({'mean': 0, 'std': 25. / 255, 'noise_type': 'gaussian'})
disc_optim = load_optimizer_gan(cfg, disc_model)
p_lambda = 10
noise_critic = NoiseCriticModel(disc_model, disc_optim, sim_params,
cfg.device, p_lambda)
# -- model models to cuda --
model = model.cuda(cfg.gpuid)
model.denoiser_info.model = model.denoiser_info.model.cuda(cfg.gpuid)
model.align_info.model = model.align_info.model.cuda(cfg.gpuid)
# -- finally --
cfg.init_lr = init_lr
return model, noise_critic, criterion
def load_burst_stn_model(cfg):
# -- init --
init_lr = cfg.init_lr
# -- load alignment model --
align_info = edict()
align_info.model, _ = load_model_stn(cfg)
align_info.optim = load_optimizer(cfg, align_info.model)
align_info.S = None
# -- load denoising model --
denoiser_info = edict()
denoiser_info.model, _ = load_model_kpn(cfg)
denoiser_info.optim = load_optimizer(cfg, denoiser_info.model)
denoiser_info.S = None
# -- create burstaligned model --
model = BurstAlignSTN(align_info, denoiser_info)
criterion = BurstRecLoss(alpha=1.0)
# -- load noise critic info --
disc_model = DCGAN_D(64, -1, 3, 64, 1, 0)
disc_model = disc_model.cuda(cfg.gpuid)
cfg.init_lr = 1 * 1e-4
sim_params = edict({'mean': 0, 'std': 25. / 255, 'noise_type': 'gaussian'})
disc_optim = load_optimizer_gan(cfg, disc_model)
p_lambda = 10
noise_critic = NoiseCriticModel(disc_model, disc_optim, sim_params,
cfg.device, p_lambda)
# -- model models to cuda --
model = model.cuda(cfg.gpuid)
model.denoiser_info.model = model.denoiser_info.model.cuda(cfg.gpuid)
model.align_info.model = model.align_info.model.cuda(cfg.gpuid)
# -- finally --
cfg.init_lr = init_lr
return model, noise_critic, criterion
def train_loop(cfg, model, scheduler, train_loader, epoch, record_losses,
writer):
# -=-=-=-=-=-=-=-=-=-=-
#
# Setup for epoch
#
# -=-=-=-=-=-=-=-=-=-=-
model.align_info.model.train()
model.denoiser_info.model.train()
model.unet_info.model.train()
model.denoiser_info.model = model.denoiser_info.model.to(cfg.device)
model.align_info.model = model.align_info.model.to(cfg.device)
model.unet_info.model = model.unet_info.model.to(cfg.device)
N = cfg.N
total_loss = 0
running_loss = 0
szm = ScaleZeroMean()
blocksize = 128
unfold = torch.nn.Unfold(blocksize, 1, 0, blocksize)
use_record = False
if record_losses is None:
record_losses = pd.DataFrame({
'burst': [],
'ave': [],
'ot': [],
'psnr': [],
'psnr_std': []
})
noise_type = cfg.noise_params.ntype
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
align_mse_losses, align_mse_count = 0, 0
rec_mse_losses, rec_mse_count = 0, 0
rec_ot_losses, rec_ot_count = 0, 0
running_loss, total_loss = 0, 0
dynamics_acc, dynamics_count = 0, 0
write_examples = False
write_examples_iter = 200
noise_level = cfg.noise_params['g']['stddev']
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Load Pre-Simulated Random Numbers
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if cfg.use_kindex_lmdb: kindex_ds = kIndexPermLMDB(cfg.batch_size, cfg.N)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Dataset Augmentation
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
transforms = [tvF.vflip, tvF.hflip, tvF.rotate]
aug = RandomChoice(transforms)
def apply_transformations(burst, gt_img):
N, B = burst.shape[:2]
gt_img_rs = rearrange(gt_img, 'b c h w -> 1 b c h w')
all_images = torch.cat([gt_img_rs, burst], dim=0)
all_images = rearrange(all_images, 'n b c h w -> (n b) c h w')
tv_utils.save_image(all_images,
'aug_original.png',
nrow=N + 1,
normalize=True)
aug_images = aug(all_images)
tv_utils.save_image(aug_images,
'aug_augmented.png',
nrow=N + 1,
normalize=True)
aug_images = rearrange(aug_images, '(n b) c h w -> n b c h w', b=B)
aug_gt_img = aug_images[0]
aug_burst = aug_images[1:]
return aug_burst, aug_gt_img
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Half Precision
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# model.align_info.model.half()
# model.denoiser_info.model.half()
# model.unet_info.model.half()
# models = [model.align_info.model,
# model.denoiser_info.model,
# model.unet_info.model]
# for model_l in models:
# model_l.half()
# for layer in model_l.modules():
# if isinstance(layer, torch.nn.BatchNorm2d):
# layer.float()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Loss Functions
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
alignmentLossMSE = BurstRecLoss()
denoiseLossMSE = BurstRecLoss(alpha=cfg.kpn_burst_alpha,
gradient_L1=~cfg.supervised)
# denoiseLossOT = BurstResidualLoss()
entropyLoss = EntropyLoss()
# -=-=-=-=-=-=-=-=-=-=-=-=-
#
# Add hooks for epoch
#
# -=-=-=-=-=-=-=-=-=-=-=-=-
align_hook = AlignmentFilterHooks(cfg.N)
align_hooks = []
for kpn_module in model.align_info.model.children():
for name, layer in kpn_module.named_children():
if name == "filter_cls":
align_hook_handle = layer.register_forward_hook(align_hook)
align_hooks.append(align_hook_handle)
# -=-=-=-=-=-=-=-=-=-=-
#
# Noise2Noise
#
# -=-=-=-=-=-=-=-=-=-=-
noise_xform = get_noise_transform(cfg.noise_params, use_to_tensor=False)
# -=-=-=-=-=-=-=-=-=-=-
#
# Final Configs
#
# -=-=-=-=-=-=-=-=-=-=-
use_timer = False
one = torch.FloatTensor([1.]).to(cfg.device)
switch = True
if use_timer:
data_clock = Timer()
clock = Timer()
ds_size = len(train_loader)
small_ds = ds_size < 500
steps_per_epoch = ds_size if not small_ds else 500
write_examples_iter = steps_per_epoch // 3
all_filters = []
# -=-=-=-=-=-=-=-=-=-=-
#
# Start Epoch
#
# -=-=-=-=-=-=-=-=-=-=-
dynamics_acc_i = -1.
if cfg.use_seed:
init = torch.initial_seed()
torch.manual_seed(cfg.seed + 1 + epoch + init)
train_iter = iter(train_loader)
for batch_idx in range(steps_per_epoch):
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Setting up for Iteration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- setup iteration timer --
if use_timer:
data_clock.tic()
clock.tic()
# -- grab data batch --
sample = next(train_iter)
burst, raw_img, motion = sample['burst'], sample['clean'], sample[
'directions']
raw_img_iid = sample['iid']
raw_img_iid = raw_img_iid.cuda(non_blocking=True)
burst = burst.cuda(non_blocking=True)
aligned, est_nnf = align_burst(cfg, burst, model)
sim_images = subsample_aligned(cfg, aligned)
burst_in, tgt_out = create_training_pairs(burst, sim_images)
dn_losses = []
for burst, target in zip(burst_in, tgt_out):
# -- forward pass --
est_denoised = model(burst)
dn_loss = compute_denoising_loss(est_denoised, target)
# -- compute grads --
if cfg.use_seed: torch.set_deterministic(False)
dn_loss.backward()
if cfg.use_seed: torch.set_deterministic(True)
# -- backprop --
optim.step()
scheduler.step()
# -- store info --
losses.append(dn_loss.item())
# -- average over losses --
dn_loss = torch.mean(dn_losses)
# -- alignment loss --
align_loss = compute_nnf_loss(gt_nnf, est_nnf)
# -- total loss --
final_loss = dn_loss + align_loss
running_loss += final_loss.item()
total_loss += final_loss.item()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Printing to Stdout
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if (batch_idx % cfg.log_interval) == 0 and batch_idx > 0:
# -- recompute model output for original images --
outputs = model(burst_og)
m_aligned, m_aligned_ave, denoised, denoised_ave = outputs[:4]
aligned_filters, denoised_filters = outputs[4:]
# -- compute mse for fun --
B = raw_img.shape[0]
raw_img = raw_img.cuda(non_blocking=True)
raw_img = get_nmlz_tgt_img(cfg, raw_img)
# -- psnr for [average of aligned frames] --
mse_loss = F.mse_loss(raw_img, m_aligned_ave,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_aligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_aligned_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [average of input, misaligned frames] --
mis_ave = torch.mean(burst_og, dim=0)
if noise_type == "qis": mis_ave = quantize_img(cfg, mis_ave)
mse_loss = F.mse_loss(raw_img, mis_ave,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_misaligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_misaligned_std = np.std(mse_to_psnr(mse_loss))
# tv_utils.save_image(raw_img,"raw.png",nrow=1,normalize=True,range=(-0.5,1.25))
# tv_utils.save_image(mis_ave,"mis.png",nrow=1,normalize=True,range=(-0.5,1.25))
# -- psnr for [bm3d] --
mid_img_og = burst[N // 2]
bm3d_nb_psnrs = []
M = 4 if B > 4 else B
for b in range(M):
bm3d_rec = bm3d.bm3d(mid_img_og[b].cpu().transpose(0, 2) + 0.5,
sigma_psd=noise_level / 255,
stage_arg=bm3d.BM3DStages.ALL_STAGES)
bm3d_rec = torch.FloatTensor(bm3d_rec).transpose(0, 2)
# maybe an issue here
b_loss = F.mse_loss(raw_img[b].cpu(),
bm3d_rec,
reduction='none').reshape(1, -1)
b_loss = torch.mean(b_loss, 1).detach().cpu().numpy()
bm3d_nb_psnr = np.mean(mse_to_psnr(b_loss))
bm3d_nb_psnrs.append(bm3d_nb_psnr)
bm3d_nb_ave = np.mean(bm3d_nb_psnrs)
bm3d_nb_std = np.std(bm3d_nb_psnrs)
# -- psnr for input averaged frames --
# burst_ave = torch.mean(burst_og,dim=0)
# mse_loss = F.mse_loss(raw_img,burst_ave,reduction='none').reshape(B,-1)
# mse_loss = torch.mean(mse_loss,1).detach().cpu().numpy()
# psnr_input_ave = np.mean(mse_to_psnr(mse_loss))
# psnr_input_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for aligned + denoised --
R = denoised.shape[1]
raw_img_repN = raw_img.unsqueeze(1).repeat(1, R, 1, 1, 1)
# if noise_type == "qis": denoised = quantize_img(cfg,denoised)
# save_image(denoised_ave,"denoised_ave.png")
# save_image(denoised,"denoised.png")
mse_loss = F.mse_loss(raw_img_repN, denoised,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_denoised_ave = np.mean(mse_to_psnr(mse_loss))
psnr_denoised_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [model output image] --
mse_loss = F.mse_loss(raw_img, denoised_ave,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr = np.mean(mse_to_psnr(mse_loss))
psnr_std = np.std(mse_to_psnr(mse_loss))
# -- update losses --
running_loss /= cfg.log_interval
# -- reconstruction MSE --
rec_mse_ave = rec_mse_losses / rec_mse_count
rec_mse_losses, rec_mse_count = 0, 0
# -- reconstruction Dist. --
rec_ot_ave = rec_ot_losses / rec_ot_count
rec_ot_losses, rec_ot_count = 0, 0
# -- ave dynamic acc --
ave_dyn_acc = dynamics_acc / dynamics_count * 100.
dynamics_acc, dynamics_count = 0, 0
# -- write record --
if use_record:
info = {
'burst': burst_loss,
'ave': ave_loss,
'ot': rec_ot_ave,
'psnr': psnr,
'psnr_std': psnr_std
}
record_losses = record_losses.append(info, ignore_index=True)
# -- write to stdout --
write_info = (epoch, cfg.epochs, batch_idx, steps_per_epoch,
running_loss, psnr, psnr_std, psnr_denoised_ave,
psnr_denoised_std, psnr_aligned_ave,
psnr_aligned_std, psnr_misaligned_ave,
psnr_misaligned_std, bm3d_nb_ave, bm3d_nb_std,
rec_mse_ave, ave_dyn_acc) #rec_ot_ave)
#print("[%d/%d][%d/%d]: %2.3e [PSNR]: %2.2f +/- %2.2f [den]: %2.2f +/- %2.2f [al]: %2.2f +/- %2.2f [mis]: %2.2f +/- %2.2f [bm3d]: %2.2f +/- %2.2f [r-mse]: %.2e [r-ot]: %.2e" % write_info)
print(
"[%d/%d][%d/%d]: %2.3e [PSNR]: %2.2f +/- %2.2f [den]: %2.2f +/- %2.2f [al]: %2.2f +/- %2.2f [mis]: %2.2f +/- %2.2f [bm3d]: %2.2f +/- %2.2f [r-mse]: %.2e [dyn]: %.2e"
% write_info,
flush=True)
# -- write to summary writer --
if writer:
writer.add_scalar('train/running-loss', running_loss,
cfg.global_step)
writer.add_scalars('train/model-psnr', {
'ave': psnr,
'std': psnr_std
}, cfg.global_step)
writer.add_scalars('train/dn-frame-psnr', {
'ave': psnr_denoised_ave,
'std': psnr_denoised_std
}, cfg.global_step)
# -- reset loss --
running_loss = 0
# -- write examples --
if write_examples and (batch_idx % write_examples_iter) == 0 and (
batch_idx > 0 or cfg.global_step == 0):
write_input_output(cfg, model, stacked_burst, aligned, denoised,
all_filters, motion)
if use_timer: clock.toc()
if use_timer:
print("data_clock", data_clock.average_time)
print("clock", clock.average_time)
cfg.global_step += 1
# -- remove hooks --
for hook in align_hooks:
hook.remove()
total_loss /= len(train_loader)
return total_loss, record_losses
def train_loop(cfg, model, optimizer, criterion, train_loader, epoch,
record_losses):
# -=-=-=-=-=-=-=-=-=-=-
#
# Setup for epoch
#
# -=-=-=-=-=-=-=-=-=-=-
model.train()
model = model.to(cfg.device)
N = cfg.N
total_loss = 0
running_loss = 0
szm = ScaleZeroMean()
blocksize = 128
unfold = torch.nn.Unfold(blocksize, 1, 0, blocksize)
use_record = False
if record_losses is None:
record_losses = pd.DataFrame({
'burst': [],
'ave': [],
'ot': [],
'psnr': [],
'psnr_std': []
})
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
align_mse_losses, align_mse_count = 0, 0
rec_mse_losses, rec_mse_count = 0, 0
rec_ot_losses, rec_ot_count = 0, 0
running_loss, total_loss = 0, 0
write_examples = True
write_examples_iter = 800
noise_level = cfg.noise_params['g']['stddev']
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Loss Functions
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
alignmentLossMSE = BurstRecLoss()
denoiseLossMSE = BurstRecLoss()
# denoiseLossOT = BurstResidualLoss()
entropyLoss = EntropyLoss()
# -=-=-=-=-=-=-=-=-=-=-
#
# Final Configs
#
# -=-=-=-=-=-=-=-=-=-=-
use_timer = False
one = torch.FloatTensor([1.]).to(cfg.device)
switch = True
if use_timer: clock = Timer()
train_iter = iter(train_loader)
D = 5 * 10**3
steps_per_epoch = len(train_loader)
# -=-=-=-=-=-=-=-=-=-=-
#
# Start Epoch
#
# -=-=-=-=-=-=-=-=-=-=-
for batch_idx in range(steps_per_epoch):
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Setting up for Iteration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- setup iteration timer --
if use_timer: clock.tic()
# -- zero gradients; ready 2 go --
optimizer.zero_grad()
model.zero_grad()
model.denoiser_info.optim.zero_grad()
# -- grab data batch --
burst, res_imgs, raw_img, directions = next(train_iter)
# -- getting shapes of data --
N, BS, C, H, W = burst.shape
burst = burst.cuda(non_blocking=True)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Formatting Images for FP
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- creating some transforms --
stacked_burst = rearrange(burst, 'n b c h w -> b n c h w')
cat_burst = rearrange(burst, 'n b c h w -> (b n) c h w')
# -- extract target image --
mid_img = burst[N // 2]
raw_zm_img = szm(raw_img.cuda(non_blocking=True))
if cfg.supervised: gt_img = raw_zm_img
else: gt_img = mid_img
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Foward Pass
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
aligned, aligned_ave, denoised, denoised_ave, filters = model(burst)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Entropy Loss for Filters
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
filters_shaped = rearrange(filters, 'b n k2 1 1 1 -> (b n) k2', n=N)
filters_entropy = entropyLoss(filters_shaped)
filters_entropy_coeff = 10.
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Alignment Losses (MSE)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
losses = alignmentLossMSE(aligned, aligned_ave, gt_img,
cfg.global_step)
ave_loss, burst_loss = [loss.item() for loss in losses]
align_mse = np.sum(losses)
align_mse_coeff = 0 #.933**cfg.global_step if cfg.global_step < 100 else 0
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Reconstruction Losses (MSE)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
denoised_ave_d = denoised_ave.detach()
losses = criterion(denoised, denoised_ave, gt_img, cfg.global_step)
ave_loss, burst_loss = [loss.item() for loss in losses]
rec_mse = np.sum(losses)
rec_mse_coeff = 0.997**cfg.global_step
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Reconstruction Losses (Distribution)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- regularization scheduler --
if cfg.global_step < 100: reg = 0.5
elif cfg.global_step < 200: reg = 0.25
elif cfg.global_step < 5000: reg = 0.15
elif cfg.global_step < 10000: reg = 0.1
else: reg = 0.05
# -- computation --
residuals = denoised - mid_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
residuals = rearrange(residuals, 'b n c h w -> b n (h w) c')
# rec_ot_pair_loss_v1 = w_gaussian_bp(residuals,noise_level)
rec_ot_pair_loss_v1 = kl_gaussian_bp(residuals, noise_level)
# rec_ot_pair_loss_v1 = ot_pairwise2gaussian_bp(residuals,K=6,reg=reg)
# rec_ot_pair_loss_v2 = ot_pairwise_bp(residuals,K=3)
rec_ot_pair_loss_v2 = torch.FloatTensor([0.]).to(cfg.device)
rec_ot_pair = (rec_ot_pair_loss_v1 + rec_ot_pair_loss_v2) / 2.
rec_ot_pair_coeff = 100 # - .997**cfg.global_step
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Final Losses
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
align_loss = align_mse_coeff * align_mse
rec_loss = rec_ot_pair_coeff * rec_ot_pair + rec_mse_coeff * rec_mse
entropy_loss = filters_entropy_coeff * filters_entropy
final_loss = align_loss + rec_loss + entropy_loss
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- alignment MSE --
align_mse_losses += align_mse.item()
align_mse_count += 1
# -- reconstruction MSE --
rec_mse_losses += rec_mse.item()
rec_mse_count += 1
# -- reconstruction Dist. --
rec_ot_losses += rec_ot_pair.item()
rec_ot_count += 1
# -- total loss --
running_loss += final_loss.item()
total_loss += final_loss.item()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Gradients & Backpropogration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- compute the gradients! --
final_loss.backward()
# -- backprop now. --
model.denoiser_info.optim.step()
optimizer.step()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Printing to Stdout
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if (batch_idx % cfg.log_interval) == 0 and batch_idx > 0:
# -- compute mse for fun --
BS = raw_img.shape[0]
raw_img = raw_img.cuda(non_blocking=True)
# -- psnr for [average of aligned frames] --
mse_loss = F.mse_loss(raw_img, aligned_ave + 0.5,
reduction='none').reshape(BS, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_aligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_aligned_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [average of input, misaligned frames] --
mis_ave = torch.mean(stacked_burst, dim=1)
mse_loss = F.mse_loss(raw_img, mis_ave + 0.5,
reduction='none').reshape(BS, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_misaligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_misaligned_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [bm3d] --
bm3d_nb_psnrs = []
for b in range(BS):
bm3d_rec = bm3d.bm3d(mid_img[b].cpu().transpose(0, 2) + 0.5,
sigma_psd=noise_level / 255,
stage_arg=bm3d.BM3DStages.ALL_STAGES)
bm3d_rec = torch.FloatTensor(bm3d_rec).transpose(0, 2)
b_loss = F.mse_loss(raw_img[b].cpu(),
bm3d_rec,
reduction='none').reshape(1, -1)
b_loss = torch.mean(b_loss, 1).detach().cpu().numpy()
bm3d_nb_psnr = np.mean(mse_to_psnr(b_loss))
bm3d_nb_psnrs.append(bm3d_nb_psnr)
bm3d_nb_ave = np.mean(bm3d_nb_psnrs)
bm3d_nb_std = np.std(bm3d_nb_psnrs)
# -- psnr for aligned + denoised --
raw_img_repN = raw_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
mse_loss = F.mse_loss(raw_img_repN,
denoised + 0.5,
reduction='none').reshape(BS, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_denoised_ave = np.mean(mse_to_psnr(mse_loss))
psnr_denoised_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [model output image] --
mse_loss = F.mse_loss(raw_img,
denoised_ave + 0.5,
reduction='none').reshape(BS, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr = np.mean(mse_to_psnr(mse_loss))
psnr_std = np.std(mse_to_psnr(mse_loss))
# -- update losses --
running_loss /= cfg.log_interval
# -- alignment MSE --
align_mse_ave = align_mse_losses / align_mse_count
align_mse_losses, align_mse_count = 0, 0
# -- reconstruction MSE --
rec_mse_ave = rec_mse_losses / rec_mse_count
rec_mse_losses, rec_mse_count = 0, 0
# -- reconstruction Dist. --
rec_ot_ave = rec_ot_losses / rec_ot_count
rec_ot_losses, rec_ot_count = 0, 0
# -- write record --
if use_record:
info = {
'burst': burst_loss,
'ave': ave_loss,
'ot': rec_ot_ave,
'psnr': psnr,
'psnr_std': psnr_std
}
record_losses = record_losses.append(info, ignore_index=True)
# -- write to stdout --
write_info = (epoch, cfg.epochs, batch_idx, len(train_loader),
running_loss, psnr, psnr_std, psnr_denoised_ave,
psnr_denoised_std, psnr_aligned_ave,
psnr_aligned_std, psnr_misaligned_ave,
psnr_misaligned_std, bm3d_nb_ave, bm3d_nb_std,
rec_mse_ave, rec_ot_ave)
print(
"[%d/%d][%d/%d]: %2.3e [PSNR]: %2.2f +/- %2.2f [den]: %2.2f +/- %2.2f [al]: %2.2f +/- %2.2f [mis]: %2.2f +/- %2.2f [bm3d]: %2.2f +/- %2.2f [r-mse]: %.2e [r-ot]: %.2e"
% write_info)
running_loss = 0
# -- write examples --
if write_examples and (batch_idx % write_examples_iter) == 0 and (
batch_idx > 0 or cfg.global_step == 0):
write_input_output(cfg, model, stacked_burst, aligned, denoised,
filters, directions)
if use_timer: clock.toc()
if use_timer: print(clock)
cfg.global_step += 1
total_loss /= len(train_loader)
return total_loss, record_losses
def train_loop(cfg, model, train_loader, epoch, record_losses):
# -=-=-=-=-=-=-=-=-=-=-
#
# Setup for epoch
#
# -=-=-=-=-=-=-=-=-=-=-
model.align_info.model.train()
model.denoiser_info.model.train()
model.unet_info.model.train()
model.denoiser_info.model = model.denoiser_info.model.to(cfg.device)
model.align_info.model = model.align_info.model.to(cfg.device)
model.unet_info.model = model.unet_info.model.to(cfg.device)
N = cfg.N
total_loss = 0
running_loss = 0
szm = ScaleZeroMean()
blocksize = 128
unfold = torch.nn.Unfold(blocksize, 1, 0, blocksize)
use_record = False
if record_losses is None:
record_losses = pd.DataFrame({
'burst': [],
'ave': [],
'ot': [],
'psnr': [],
'psnr_std': []
})
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
align_mse_losses, align_mse_count = 0, 0
align_ot_losses, align_ot_count = 0, 0
rec_mse_losses, rec_mse_count = 0, 0
rec_ot_losses, rec_ot_count = 0, 0
running_loss, total_loss = 0, 0
write_examples = True
noise_level = cfg.noise_params['g']['stddev']
# -=-=-=-=-=-=-=-=-=-=-=-=-
#
# Add hooks for epoch
#
# -=-=-=-=-=-=-=-=-=-=-=-=-
align_hook = AlignmentFilterHooks(cfg.N)
align_hooks = []
for kpn_module in model.align_info.model.children():
for name, layer in kpn_module.named_children():
if name == "filter_cls":
align_hook_handle = layer.register_forward_hook(align_hook)
align_hooks.append(align_hook_handle)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Loss Functions
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
alignmentLossMSE = BurstRecLoss()
denoiseLossMSE = BurstRecLoss()
# denoiseLossOT = BurstResidualLoss()
entropyLoss = EntropyLoss()
# -=-=-=-=-=-=-=-=-=-=-
#
# Final Configs
#
# -=-=-=-=-=-=-=-=-=-=-
use_timer = False
one = torch.FloatTensor([1.]).to(cfg.device)
switch = True
if use_timer: clock = Timer()
train_iter = iter(train_loader)
steps_per_epoch = len(train_loader)
write_examples_iter = steps_per_epoch // 2
# -=-=-=-=-=-=-=-=-=-=-
#
# Start Epoch
#
# -=-=-=-=-=-=-=-=-=-=-
for batch_idx in range(steps_per_epoch):
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Setting up for Iteration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- setup iteration timer --
if use_timer: clock.tic()
# -- zero gradients; ready 2 go --
model.align_info.model.zero_grad()
model.align_info.optim.zero_grad()
model.denoiser_info.model.zero_grad()
model.denoiser_info.optim.zero_grad()
model.unet_info.model.zero_grad()
model.unet_info.optim.zero_grad()
# -- grab data batch --
burst, res_imgs, raw_img, directions = next(train_iter)
# -- getting shapes of data --
N, B, C, H, W = burst.shape
burst = burst.cuda(non_blocking=True)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Formatting Images for FP
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- creating some transforms --
stacked_burst = rearrange(burst, 'n b c h w -> b n c h w')
cat_burst = rearrange(burst, 'n b c h w -> (b n) c h w')
# -- extract target image --
mid_img = burst[N // 2]
raw_zm_img = szm(raw_img.cuda(non_blocking=True))
if cfg.supervised: gt_img = raw_zm_img
else: gt_img = mid_img
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Check Some Gradients
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
def mse_v_wassersteinG_check_some_gradients(cfg, burst, gt_img, model):
grads = edict()
gt_img_rs = gt_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
model.unet_info.model.zero_grad()
burst.requires_grad_(True)
outputs = model(burst)
aligned, aligned_ave, denoised, denoised_ave = outputs[:4]
aligned_filters, denoised_filters = outputs[4:]
residuals = denoised - gt_img_rs
P = 1. #residuals.numel()
denoised.retain_grad()
rec_mse = (denoised.reshape(B, -1) - gt_img.reshape(B, -1))**2
rec_mse.retain_grad()
ones = P * torch.ones_like(rec_mse)
rec_mse.backward(ones, retain_graph=True)
grads.rmse = rec_mse.grad.clone().reshape(B, -1)
grad_rec_mse = grads.rmse
grads.dmse = denoised.grad.clone().reshape(B, -1)
grad_denoised_mse = grads.dmse
ones = torch.ones_like(rec_mse)
grads.d_to_b = torch.autograd.grad(rec_mse, denoised,
ones)[0].reshape(B, -1)
model.unet_info.model.zero_grad()
outputs = model(burst)
aligned, aligned_ave, denoised, denoised_ave = outputs[:4]
aligned_filters, denoised_filters = outputs[4:]
# residuals = denoised - gt_img_rs
# rec_ot = w_gaussian_bp(residuals,noise_level)
denoised.retain_grad()
rec_ot_v = (denoised - gt_img_rs)**2
rec_ot_v.retain_grad()
rec_ot = (rec_ot_v.mean() - noise_level / 255.)**2
rec_ot.retain_grad()
ones = P * torch.ones_like(rec_ot)
rec_ot.backward(ones)
grad_denoised_ot = denoised.grad.clone().reshape(B, -1)
grads.dot = grad_denoised_ot
grad_rec_ot = rec_ot_v.grad.clone().reshape(B, -1)
grads.rot = grad_denoised_ot
print("Gradient Name Info")
for name, g in grads.items():
g_norm = g.norm().item()
g_mean = g.mean().item()
g_std = g.std().item()
print(name, g.shape, g_norm, g_mean, g_std)
print_pairs = False
if print_pairs:
print("All Gradient Ratios")
for name_t, g_t in grads.items():
for name_b, g_b in grads.items():
ratio = g_t / g_b
ratio_m = ratio.mean().item()
ratio_std = ratio.std().item()
print("[%s/%s] [%2.2e +/- %2.2e]" %
(name_t, name_b, ratio_m, ratio_std))
use_true_mse = False
if use_true_mse:
print("Ratios with Estimated MSE Gradient")
true_dmse = 2 * torch.mean(denoised_ave - gt_img)**2
ratio_mse = grads.dmse / true_dmse
ratio_mse_dtb = grads.dmse / grads.d_to_b
print(ratio_mse)
print(ratio_mse_dtb)
dot_v_dmse = True
if dot_v_dmse:
print("Ratio of Denoised OT and Denoised MSE")
ratio_mseot = (grads.dmse / grads.dot)
print(ratio_mseot.mean(), ratio_mseot.std())
ratio_mseot = ratio_mseot[0, 0].item()
c1 = torch.mean((denoised - gt_img_rs)**2).item()
c2 = noise_level / 255
m = torch.mean(gt_img_rs).item()
true_ratio = 2. * (c1 - c2) / (np.product(burst.shape))
# diff = denoised.reshape(B,-1)-gt_img_rs.reshape(B,-1)
# true_ratio = 2.*(c1 - c2) * ( diff / ( np.product(burst.shape) ) )
# print(c1,c2,m,true_ratio,1./true_ratio)
ratio_mseot = (grads.dmse / (grads.dot))
print(ratio_mseot * true_ratio)
# ratio_mseot = (grads.dmse / ( grads.dot / diff) )
# print(ratio_mseot*true_ratio)
# print(ratio_mseot.mean(),ratio_mseot.std())
exit()
model.unet_info.model.zero_grad()
# mse_v_wassersteinG_check_some_gradients(cfg,burst,gt_img,model)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Foward Pass
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
outputs = model(burst)
aligned, aligned_ave, denoised, denoised_ave = outputs[:4]
aligned_filters, denoised_filters = outputs[4:]
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Require Approx Equal Filter Norms (aligned)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
aligned_filters_rs = rearrange(aligned_filters,
'b n k2 c h w -> b n (k2 c h w)')
norms = torch.norm(aligned_filters_rs, p=2., dim=2)
norms_mid = norms[:, N // 2].unsqueeze(1).repeat(1, N)
norm_loss_align = torch.mean(
torch.pow(torch.abs(norms - norms_mid), 1.))
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Require Approx Equal Filter Norms (denoised)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
denoised_filters = rearrange(denoised_filters,
'b n k2 c h w -> b n (k2 c h w)')
norms = torch.norm(denoised_filters, p=2., dim=2)
norms_mid = norms[:, N // 2].unsqueeze(1).repeat(1, N)
norm_loss_denoiser = torch.mean(
torch.pow(torch.abs(norms - norms_mid), 1.))
norm_loss_coeff = 0.
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Decrease Entropy within a Kernel
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
filters_entropy = 0
filters_entropy_coeff = 0. # 1000.
all_filters = []
L = len(align_hook.filters)
iter_filters = align_hook.filters if L > 0 else [aligned_filters]
for filters in iter_filters:
filters_shaped = rearrange(filters,
'b n k2 c h w -> (b n c h w) k2',
n=N)
filters_entropy += entropyLoss(filters_shaped)
all_filters.append(filters)
if L > 0: filters_entropy /= L
all_filters = torch.stack(all_filters, dim=1)
align_hook.clear()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Increase Entropy across each Kernel
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
filters_dist_entropy = 0
# -- across each frame --
# filters_shaped = rearrange(all_filters,'b l n k2 c h w -> (b l) (n c h w) k2')
# filters_shaped = torch.mean(filters_shaped,dim=1)
# filters_dist_entropy += -1 * entropyLoss(filters_shaped)
# -- across each batch --
filters_shaped = rearrange(all_filters,
'b l n k2 c h w -> (n l) (b c h w) k2')
filters_shaped = torch.mean(filters_shaped, dim=1)
filters_dist_entropy += -1 * entropyLoss(filters_shaped)
# -- across each kpn cascade --
# filters_shaped = rearrange(all_filters,'b l n k2 c h w -> (b n) (l c h w) k2')
# filters_shaped = torch.mean(filters_shaped,dim=1)
# filters_dist_entropy += -1 * entropyLoss(filters_shaped)
filters_dist_coeff = 0
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Alignment Losses (MSE)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
losses = alignmentLossMSE(aligned, aligned_ave, gt_img,
cfg.global_step)
ave_loss, burst_loss = [loss.item() for loss in losses]
align_mse = np.sum(losses)
align_mse_coeff = 0. #0.95**cfg.global_step
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Alignment Losses (Distribution)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# pad = 2*cfg.N
# fs = cfg.dynamic.frame_size
residuals = aligned - gt_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
# centered_residuals = tvF.center_crop(residuals,(fs-pad,fs-pad))
# centered_residuals = tvF.center_crop(residuals,(fs//2,fs//2))
# align_ot = kl_gaussian_bp(residuals,noise_level,flip=True)
align_ot = kl_gaussian_bp_patches(residuals,
noise_level,
flip=True,
patchsize=16)
align_ot_coeff = 0 # 100.
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Reconstruction Losses (MSE)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
losses = denoiseLossMSE(denoised, denoised_ave, gt_img,
cfg.global_step)
ave_loss, burst_loss = [loss.item() for loss in losses]
rec_mse = np.sum(losses)
rec_mse_coeff = 0.95**cfg.global_step
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Reconstruction Losses (Distribution)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- computation --
gt_img_rs = gt_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
residuals = denoised - gt_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
# rec_ot = kl_gaussian_bp(residuals,noise_level)
rec_ot = kl_gaussian_bp(residuals, noise_level, flip=True)
# rec_ot /= 2.
# alpha_grid = [0.,1.,5.,10.,25.]
# for alpha in alpha_grid:
# # residuals = torch.normal(torch.zeros_like(residuals)+ gt_img_rs*alpha/255.,noise_level/255.)
# residuals = torch.normal(torch.zeros_like(residuals),noise_level/255.+ gt_img_rs*alpha/255.)
# rec_ot_v2_a = kl_gaussian_bp_patches(residuals,noise_level,patchsize=16)
# rec_ot_v1_b = kl_gaussian_bp(residuals,noise_level,flip=True)
# rec_ot_v2_b = kl_gaussian_bp_patches(residuals,noise_level,flip=True,patchsize=16)
# rec_ot_all = torch.tensor([rec_ot_v1_a,rec_ot_v2_a,rec_ot_v1_b,rec_ot_v2_b])
# rec_ot_v2 = (rec_ot_v2_a + rec_ot_v2_b).item()/2.
# print(alpha,torch.min(rec_ot_all),torch.max(rec_ot_all),rec_ot_v1,rec_ot_v2)
# exit()
# rec_ot = w_gaussian_bp(residuals,noise_level)
# print(residuals.numel())
rec_ot_coeff = 100. #residuals.numel()*2.
# 1000.# - .997**cfg.global_step
# residuals = rearrange(residuals,'b n c h w -> b n (h w) c')
# rec_ot_pair_loss_v1 = w_gaussian_bp(residuals,noise_level)
# rec_ot_loss_v1 = kl_gaussian_bp(residuals,noise_level,flip=True)
# rec_ot_loss_v1 = kl_gaussian_pair_bp(residuals)
# rec_ot_loss_v1 = ot_pairwise2gaussian_bp(residuals,K=6,reg=reg)
# rec_ot_loss_v2 = ot_pairwise_bp(residuals,K=3)
# rec_ot_pair_loss_v2 = torch.FloatTensor([0.]).to(cfg.device)
# rec_ot = (rec_ot_loss_v1 + rec_ot_pair_loss_v2)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Final Losses
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
rec_loss = rec_ot_coeff * rec_ot + rec_mse_coeff * rec_mse
norm_loss = norm_loss_coeff * (norm_loss_denoiser + norm_loss_align)
align_loss = align_mse_coeff * align_mse + align_ot_coeff * align_ot
entropy_loss = 0 #filters_entropy_coeff * filters_entropy + filters_dist_coeff * filters_dist_entropy
# final_loss = align_loss + rec_loss + entropy_loss + norm_loss
final_loss = rec_loss
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- alignment MSE --
align_mse_losses += align_mse.item()
align_mse_count += 1
# -- alignment Dist --
align_ot_losses += align_ot.item()
align_ot_count += 1
# -- reconstruction MSE --
rec_mse_losses += rec_mse.item()
rec_mse_count += 1
# -- reconstruction Dist. --
rec_ot_losses += rec_ot.item()
rec_ot_count += 1
# -- total loss --
running_loss += final_loss.item()
total_loss += final_loss.item()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Gradients & Backpropogration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- compute the gradients! --
final_loss.backward()
# -- backprop now. --
model.align_info.optim.step()
model.denoiser_info.optim.step()
model.unet_info.optim.step()
# for name,params in model.unet_info.model.named_parameters():
# if not ("weight" in name): continue
# print(params.grad.norm())
# # print(module.conv1.parameters())
# # print(module.conv1.data.grad)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Printing to Stdout
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if (batch_idx % cfg.log_interval) == 0 and batch_idx > 0:
# -- compute mse for fun --
B = raw_img.shape[0]
raw_img = raw_img.cuda(non_blocking=True)
# -- psnr for [average of aligned frames] --
mse_loss = F.mse_loss(raw_img, aligned_ave + 0.5,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_aligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_aligned_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [average of input, misaligned frames] --
mis_ave = torch.mean(stacked_burst, dim=1)
mse_loss = F.mse_loss(raw_img, mis_ave + 0.5,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_misaligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_misaligned_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [bm3d] --
bm3d_nb_psnrs = []
M = 10 if B > 10 else B
for b in range(B):
bm3d_rec = bm3d.bm3d(mid_img[b].cpu().transpose(0, 2) + 0.5,
sigma_psd=noise_level / 255,
stage_arg=bm3d.BM3DStages.ALL_STAGES)
bm3d_rec = torch.FloatTensor(bm3d_rec).transpose(0, 2)
b_loss = F.mse_loss(raw_img[b].cpu(),
bm3d_rec,
reduction='none').reshape(1, -1)
b_loss = torch.mean(b_loss, 1).detach().cpu().numpy()
bm3d_nb_psnr = np.mean(mse_to_psnr(b_loss))
bm3d_nb_psnrs.append(bm3d_nb_psnr)
bm3d_nb_ave = np.mean(bm3d_nb_psnrs)
bm3d_nb_std = np.std(bm3d_nb_psnrs)
# -- psnr for aligned + denoised --
raw_img_repN = raw_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
mse_loss = F.mse_loss(raw_img_repN,
denoised + 0.5,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_denoised_ave = np.mean(mse_to_psnr(mse_loss))
psnr_denoised_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [model output image] --
mse_loss = F.mse_loss(raw_img,
denoised_ave + 0.5,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr = np.mean(mse_to_psnr(mse_loss))
psnr_std = np.std(mse_to_psnr(mse_loss))
# -- update losses --
running_loss /= cfg.log_interval
# -- alignment MSE --
align_mse_ave = align_mse_losses / align_mse_count
align_mse_losses, align_mse_count = 0, 0
# -- alignment Dist. --
align_ot_ave = align_ot_losses / align_ot_count
align_ot_losses, align_ot_count = 0, 0
# -- reconstruction MSE --
rec_mse_ave = rec_mse_losses / rec_mse_count
rec_mse_losses, rec_mse_count = 0, 0
# -- reconstruction Dist. --
rec_ot_ave = rec_ot_losses / rec_ot_count
rec_ot_losses, rec_ot_count = 0, 0
# -- write record --
if use_record:
info = {
'burst': burst_loss,
'ave': ave_loss,
'ot': rec_ot_ave,
'psnr': psnr,
'psnr_std': psnr_std
}
record_losses = record_losses.append(info, ignore_index=True)
# -- write to stdout --
write_info = (epoch, cfg.epochs, batch_idx, len(train_loader),
running_loss, psnr, psnr_std, psnr_denoised_ave,
psnr_denoised_std, psnr_aligned_ave,
psnr_aligned_std, psnr_misaligned_ave,
psnr_misaligned_std, bm3d_nb_ave, bm3d_nb_std,
rec_mse_ave, rec_ot_ave)
print(
"[%d/%d][%d/%d]: %2.3e [PSNR]: %2.2f +/- %2.2f [den]: %2.2f +/- %2.2f [al]: %2.2f +/- %2.2f [mis]: %2.2f +/- %2.2f [bm3d]: %2.2f +/- %2.2f [r-mse]: %.2e [r-ot]: %.2e"
% write_info)
running_loss = 0
# -- write examples --
if write_examples and (batch_idx % write_examples_iter) == 0 and (
batch_idx > 0 or cfg.global_step == 0):
write_input_output(cfg, model, stacked_burst, aligned, denoised,
all_filters, directions)
if use_timer: clock.toc()
if use_timer: print(clock)
cfg.global_step += 1
# -- remove hooks --
for hook in align_hooks:
hook.remove()
total_loss /= len(train_loader)
return total_loss, record_losses
def train_loop(cfg, model, train_loader, epoch, record_losses):
# -=-=-=-=-=-=-=-=-=-=-
#
# Setup for epoch
#
# -=-=-=-=-=-=-=-=-=-=-
model.align_info.model.train()
model.denoiser_info.model.train()
model.denoiser_info.model = model.denoiser_info.model.to(cfg.device)
model.align_info.model = model.align_info.model.to(cfg.device)
N = cfg.N
total_loss = 0
running_loss = 0
szm = ScaleZeroMean()
blocksize = 128
unfold = torch.nn.Unfold(blocksize, 1, 0, blocksize)
use_record = False
if record_losses is None:
record_losses = pd.DataFrame({
'burst': [],
'ave': [],
'ot': [],
'psnr': [],
'psnr_std': []
})
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
align_mse_losses, align_mse_count = 0, 0
align_ot_losses, align_ot_count = 0, 0
rec_mse_losses, rec_mse_count = 0, 0
rec_ot_losses, rec_ot_count = 0, 0
running_loss, total_loss = 0, 0
write_examples = True
noise_level = cfg.noise_params['g']['stddev']
# -=-=-=-=-=-=-=-=-=-=-=-=-
#
# Add hooks for epoch
#
# -=-=-=-=-=-=-=-=-=-=-=-=-
align_hook = AlignmentFilterHooks(cfg.N)
align_hooks = []
for kpn_module in model.align_info.model.children():
for name, layer in kpn_module.named_children():
if name == "filter_cls":
align_hook_handle = layer.register_forward_hook(align_hook)
align_hooks.append(align_hook_handle)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Loss Functions
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
alignmentLossMSE = BurstRecLoss()
denoiseLossMSE = BurstRecLoss()
# denoiseLossOT = BurstResidualLoss()
entropyLoss = EntropyLoss()
# -=-=-=-=-=-=-=-=-=-=-
#
# Final Configs
#
# -=-=-=-=-=-=-=-=-=-=-
use_timer = False
one = torch.FloatTensor([1.]).to(cfg.device)
switch = True
if use_timer: clock = Timer()
train_iter = iter(train_loader)
steps_per_epoch = len(train_loader)
write_examples_iter = steps_per_epoch // 3
# -=-=-=-=-=-=-=-=-=-=-
#
# Start Epoch
#
# -=-=-=-=-=-=-=-=-=-=-
for batch_idx in range(steps_per_epoch):
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Setting up for Iteration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- setup iteration timer --
if use_timer: clock.tic()
# -- zero gradients; ready 2 go --
model.align_info.model.zero_grad()
model.align_info.optim.zero_grad()
model.denoiser_info.model.zero_grad()
model.denoiser_info.optim.zero_grad()
# -- grab data batch --
burst, res_imgs, raw_img, directions = next(train_iter)
# -- getting shapes of data --
N, B, C, H, W = burst.shape
burst = burst.cuda(non_blocking=True)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Formatting Images for FP
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- creating some transforms --
stacked_burst = rearrange(burst, 'n b c h w -> b n c h w')
cat_burst = rearrange(burst, 'n b c h w -> (b n) c h w')
# -- extract target image --
mid_img = burst[N // 2]
raw_zm_img = szm(raw_img.cuda(non_blocking=True))
if cfg.supervised: gt_img = raw_zm_img
else: gt_img = mid_img
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Foward Pass
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
outputs = model(burst)
aligned, aligned_ave, denoised, denoised_ave = outputs[:4]
aligned_filters, denoised_filters = outputs[4:]
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Require Approx Equal Filter Norms
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
denoised_filters = rearrange(denoised_filters.detach(),
'b n k2 c h w -> n (b k2 c h w)')
norms = denoised_filters.norm(dim=1)
norm_loss_denoiser = torch.mean((norms - norms[N // 2])**2)
norm_loss_coeff = 100.
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Decrease Entropy within a Kernel
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
filters_entropy = 0
filters_entropy_coeff = 1000.
all_filters = []
L = len(align_hook.filters)
iter_filters = align_hook.filters if L > 0 else [aligned_filters]
for filters in iter_filters:
filters_shaped = rearrange(filters,
'b n k2 c h w -> (b n c h w) k2',
n=N)
filters_entropy += entropyLoss(filters_shaped)
all_filters.append(filters)
if L > 0: filters_entropy /= L
all_filters = torch.stack(all_filters, dim=1)
align_hook.clear()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Increase Entropy across each Kernel
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
filters_dist_entropy = 0
# -- across each frame --
# filters_shaped = rearrange(all_filters,'b l n k2 c h w -> (b l) (n c h w) k2')
# filters_shaped = torch.mean(filters_shaped,dim=1)
# filters_dist_entropy += -1 * entropyLoss(filters_shaped)
# -- across each batch --
filters_shaped = rearrange(all_filters,
'b l n k2 c h w -> (n l) (b c h w) k2')
filters_shaped = torch.mean(filters_shaped, dim=1)
filters_dist_entropy += -1 * entropyLoss(filters_shaped)
# -- across each kpn cascade --
# filters_shaped = rearrange(all_filters,'b l n k2 c h w -> (b n) (l c h w) k2')
# filters_shaped = torch.mean(filters_shaped,dim=1)
# filters_dist_entropy += -1 * entropyLoss(filters_shaped)
filters_dist_coeff = 0
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Alignment Losses (MSE)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
losses = alignmentLossMSE(aligned, aligned_ave, gt_img,
cfg.global_step)
ave_loss, burst_loss = [loss.item() for loss in losses]
align_mse = np.sum(losses)
align_mse_coeff = 0.95**cfg.global_step
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Alignment Losses (Distribution)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
fs = cfg.dynamic.frame_size
residuals = aligned - gt_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
centered_residuals = tvF.center_crop(residuals, (fs // 2, fs // 2))
align_ot = kl_gaussian_bp(centered_residuals, noise_level, flip=True)
align_ot_coeff = 100.
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Reconstruction Losses (MSE)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
losses = denoiseLossMSE(denoised, denoised_ave, gt_img,
cfg.global_step)
ave_loss, burst_loss = [loss.item() for loss in losses]
rec_mse = np.sum(losses)
rec_mse_coeff = 0.95**cfg.global_step
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Reconstruction Losses (Distribution)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- regularization scheduler --
if cfg.global_step < 100: reg = 0.5
elif cfg.global_step < 200: reg = 0.25
elif cfg.global_step < 5000: reg = 0.15
elif cfg.global_step < 10000: reg = 0.1
else: reg = 0.05
# -- computation --
residuals = denoised - gt_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
# residuals = rearrange(residuals,'b n c h w -> b n (h w) c')
# rec_ot_pair_loss_v1 = w_gaussian_bp(residuals,noise_level)
rec_ot_loss_v1 = kl_gaussian_bp(residuals, noise_level, flip=True)
# rec_ot_loss_v1 = kl_gaussian_pair_bp(residuals)
# rec_ot_loss_v1 = kl_gaussian_bp_patches(residuals,noise_level,flip=True,patchsize=16)
# rec_ot_loss_v1 = ot_pairwise2gaussian_bp(residuals,K=6,reg=reg)
# rec_ot_loss_v2 = ot_pairwise_bp(residuals,K=3)
rec_ot_pair_loss_v2 = torch.FloatTensor([0.]).to(cfg.device)
rec_ot = (rec_ot_loss_v1 + rec_ot_pair_loss_v2)
rec_ot_coeff = 100. # - .997**cfg.global_step
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Final Losses
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
rec_loss = rec_ot_coeff * rec_ot + rec_mse_coeff * rec_mse
norm_loss = norm_loss_coeff * norm_loss_denoiser
align_loss = align_mse_coeff * align_mse + align_ot_coeff * align_ot
entropy_loss = filters_entropy_coeff * filters_entropy + filters_dist_coeff * filters_dist_entropy
final_loss = align_loss + rec_loss + entropy_loss + norm_loss
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- alignment MSE --
align_mse_losses += align_mse.item()
align_mse_count += 1
# -- alignment Dist --
align_ot_losses += align_ot.item()
align_ot_count += 1
# -- reconstruction MSE --
rec_mse_losses += rec_mse.item()
rec_mse_count += 1
# -- reconstruction Dist. --
rec_ot_losses += rec_ot.item()
rec_ot_count += 1
# -- total loss --
running_loss += final_loss.item()
total_loss += final_loss.item()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Gradients & Backpropogration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- compute the gradients! --
final_loss.backward()
# -- backprop now. --
model.align_info.optim.step()
model.denoiser_info.optim.step()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Printing to Stdout
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if (batch_idx % cfg.log_interval) == 0 and batch_idx > 0:
# -- compute mse for fun --
B = raw_img.shape[0]
raw_img = raw_img.cuda(non_blocking=True)
# -- psnr for [average of aligned frames] --
mse_loss = F.mse_loss(raw_img, aligned_ave + 0.5,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_aligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_aligned_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [average of input, misaligned frames] --
mis_ave = torch.mean(stacked_burst, dim=1)
mse_loss = F.mse_loss(raw_img, mis_ave + 0.5,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_misaligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_misaligned_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [bm3d] --
bm3d_nb_psnrs = []
M = 10 if B > 10 else B
for b in range(B):
bm3d_rec = bm3d.bm3d(mid_img[b].cpu().transpose(0, 2) + 0.5,
sigma_psd=noise_level / 255,
stage_arg=bm3d.BM3DStages.ALL_STAGES)
bm3d_rec = torch.FloatTensor(bm3d_rec).transpose(0, 2)
b_loss = F.mse_loss(raw_img[b].cpu(),
bm3d_rec,
reduction='none').reshape(1, -1)
b_loss = torch.mean(b_loss, 1).detach().cpu().numpy()
bm3d_nb_psnr = np.mean(mse_to_psnr(b_loss))
bm3d_nb_psnrs.append(bm3d_nb_psnr)
bm3d_nb_ave = np.mean(bm3d_nb_psnrs)
bm3d_nb_std = np.std(bm3d_nb_psnrs)
# -- psnr for aligned + denoised --
raw_img_repN = raw_img.unsqueeze(1).repeat(1, N, 1, 1, 1)
mse_loss = F.mse_loss(raw_img_repN,
denoised + 0.5,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_denoised_ave = np.mean(mse_to_psnr(mse_loss))
psnr_denoised_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [model output image] --
mse_loss = F.mse_loss(raw_img,
denoised_ave + 0.5,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr = np.mean(mse_to_psnr(mse_loss))
psnr_std = np.std(mse_to_psnr(mse_loss))
# -- update losses --
running_loss /= cfg.log_interval
# -- alignment MSE --
align_mse_ave = align_mse_losses / align_mse_count
align_mse_losses, align_mse_count = 0, 0
# -- alignment Dist. --
align_ot_ave = align_ot_losses / align_ot_count
align_ot_losses, align_ot_count = 0, 0
# -- reconstruction MSE --
rec_mse_ave = rec_mse_losses / rec_mse_count
rec_mse_losses, rec_mse_count = 0, 0
# -- reconstruction Dist. --
rec_ot_ave = rec_ot_losses / rec_ot_count
rec_ot_losses, rec_ot_count = 0, 0
# -- write record --
if use_record:
info = {
'burst': burst_loss,
'ave': ave_loss,
'ot': rec_ot_ave,
'psnr': psnr,
'psnr_std': psnr_std
}
record_losses = record_losses.append(info, ignore_index=True)
# -- write to stdout --
write_info = (epoch, cfg.epochs, batch_idx, len(train_loader),
running_loss, psnr, psnr_std, psnr_denoised_ave,
psnr_denoised_std, psnr_aligned_ave,
psnr_aligned_std, psnr_misaligned_ave,
psnr_misaligned_std, bm3d_nb_ave, bm3d_nb_std,
rec_mse_ave, rec_ot_ave)
print(
"[%d/%d][%d/%d]: %2.3e [PSNR]: %2.2f +/- %2.2f [den]: %2.2f +/- %2.2f [al]: %2.2f +/- %2.2f [mis]: %2.2f +/- %2.2f [bm3d]: %2.2f +/- %2.2f [r-mse]: %.2e [r-ot]: %.2e"
% write_info)
running_loss = 0
# -- write examples --
if write_examples and (batch_idx % write_examples_iter) == 0 and (
batch_idx > 0 or cfg.global_step == 0):
write_input_output(cfg, model, stacked_burst, aligned, denoised,
all_filters, directions)
if use_timer: clock.toc()
if use_timer: print(clock)
cfg.global_step += 1
# -- remove hooks --
for hook in align_hooks:
hook.remove()
total_loss /= len(train_loader)
return total_loss, record_losses
def train_loop(cfg, model, optimizer, scheduler, train_loader, epoch,
record_losses, writer):
# -=-=-=-=-=-=-=-=-=-=-
#
# Setup for epoch
#
# -=-=-=-=-=-=-=-=-=-=-
model.train()
model = model.to(cfg.gpuid)
N = cfg.N
total_loss = 0
running_loss = 0
szm = ScaleZeroMean()
blocksize = 128
unfold = torch.nn.Unfold(blocksize, 1, 0, blocksize)
use_record = False
if record_losses is None:
record_losses = pd.DataFrame({
'burst': [],
'ave': [],
'ot': [],
'psnr': [],
'psnr_std': []
})
noise_type = cfg.noise_params.ntype
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
align_mse_losses, align_mse_count = 0, 0
rec_mse_losses, rec_mse_count = 0, 0
rec_ot_losses, rec_ot_count = 0, 0
running_loss, total_loss = 0, 0
write_examples = False
write_examples_iter = 200
noise_level = cfg.noise_params['g']['stddev']
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Load Pre-Simulated Random Numbers
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if cfg.use_kindex_lmdb: kindex_ds = kIndexPermLMDB(cfg.batch_size, cfg.N)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Dataset Augmentation
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
transforms = [tvF.vflip, tvF.hflip, tvF.rotate]
aug = RandomChoice(transforms)
def apply_transformations(burst, gt_img):
N, B = burst.shape[:2]
gt_img_rs = rearrange(gt_img, 'b c h w -> 1 b c h w')
all_images = torch.cat([gt_img_rs, burst], dim=0)
all_images = rearrange(all_images, 'n b c h w -> (n b) c h w')
tv_utils.save_image(all_images,
'aug_original.png',
nrow=N + 1,
normalize=True)
aug_images = aug(all_images)
tv_utils.save_image(aug_images,
'aug_augmented.png',
nrow=N + 1,
normalize=True)
aug_images = rearrange(aug_images, '(n b) c h w -> n b c h w', b=B)
aug_gt_img = aug_images[0]
aug_burst = aug_images[1:]
return aug_burst, aug_gt_img
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Half Precision
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# model.align_info.model.half()
# model.denoiser_info.model.half()
# model.unet_info.model.half()
# models = [model.align_info.model,
# model.denoiser_info.model,
# model.unet_info.model]
# for model_l in models:
# model_l.half()
# for layer in model_l.modules():
# if isinstance(layer, torch.nn.BatchNorm2d):
# layer.float()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Loss Functions
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
alignmentLossMSE = BurstRecLoss()
denoiseLossMSE = BurstRecLoss(alpha=cfg.kpn_burst_alpha,
gradient_L1=~cfg.supervised)
# denoiseLossOT = BurstResidualLoss()
entropyLoss = EntropyLoss()
# -=-=-=-=-=-=-=-=-=-=-
#
# Noise2Noise
#
# -=-=-=-=-=-=-=-=-=-=-
noise_xform = get_noise_transform(cfg.noise_params, use_to_tensor=False)
# -=-=-=-=-=-=-=-=-=-=-
#
# Final Configs
#
# -=-=-=-=-=-=-=-=-=-=-
random_crop = tvT.RandomCrop(cfg.byol_patchsize)
use_timer = False
one = torch.FloatTensor([1.]).to(cfg.device)
switch = True
if use_timer:
data_clock = Timer()
clock = Timer()
train_iter = iter(train_loader)
ds_size = len(train_loader)
small_ds = ds_size < 500
steps_per_epoch = ds_size if not small_ds else 500
write_examples_iter = steps_per_epoch // 3
all_filters = []
# -=-=-=-=-=-=-=-=-=-=-
#
# Start Epoch
#
# -=-=-=-=-=-=-=-=-=-=-
for batch_idx in range(steps_per_epoch):
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Setting up for Iteration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- setup iteration timer --
if use_timer:
data_clock.tic()
clock.tic()
# -- grab data batch --
if small_ds and batch_idx >= ds_size:
train_iter = iter(train_loader) # reset if too big
sample = next(train_iter)
burst, raw_img, directions = sample['burst'], sample['clean'], sample[
'directions']
burst = burst.cuda(non_blocking=True)
# -- handle possibly cached simulated bursts --
if 'sim_burst' in sample:
sim_burst = rearrange(sample['sim_burst'],
'b n k c h w -> n b k c h w')
else:
sim_burst = None
if sim_burst is None and not (cfg.n2n or cfg.supervised):
if sim_burst is None:
if cfg.use_kindex_lmdb:
kindex = kindex_ds[batch_idx].cuda(non_blocking=True)
else:
kindex = None
query = burst[[N // 2]]
database = torch.cat([burst[:N // 2], burst[N // 2 + 1:]])
sim_burst = compute_similar_bursts(
cfg,
query,
database,
cfg.sim_K,
noise_level / 255.,
patchsize=cfg.sim_patchsize,
shuffle_k=cfg.sim_shuffleK,
kindex=kindex,
only_middle=cfg.sim_only_middle,
search_method=cfg.sim_method,
db_level="frame")
if cfg.n2n or cfg.supervised:
sim_burst = burst.unsqueeze(2).repeat(1, 1, 2, 1, 1, 1)
else:
sim_burst = sim_burst.cuda(non_blocking=True)
if use_timer: data_clock.toc()
# -- getting shapes of data --
N, B, C, H, W = burst.shape
burst = burst.cuda(non_blocking=True)
raw_zm_img = szm(raw_img.cuda(non_blocking=True))
burst_og = burst.clone()
mid_img_og = burst[N // 2]
# -- shuffle over Simulated Samples --
k_ins, k_outs = create_k_grid(sim_burst, shuffle=True)
# k_ins,k_outs = [k_ins[0]],[k_outs[0]]
for k_in, k_out in zip(k_ins, k_outs):
if k_in == k_out: continue
# -- zero gradients; ready 2 go --
optimizer.zero_grad()
model.zero_grad()
# -- compute input/output data --
if cfg.sim_only_middle:
midi = 0 if sim_burst.shape[0] == 1 else N // 2
left_burst, right_burst = burst[:N // 2], burst[N // 2 + 1:]
burst = torch.cat(
[left_burst, sim_burst[[midi], :, k_in], right_burst],
dim=0)
mid_img = sim_burst[midi, :, k_out]
else:
burst = sim_burst[:, :, k_in]
mid_img = sim_burst[N // 2, :, k_out]
# mid_img = sim_burst[N//2,:]
# print(burst.shape,mid_img.shape)
# print(F.mse_loss(burst,mid_img).item())
if cfg.supervised:
gt_img = get_nmlz_img(cfg, raw_img).cuda(non_blocking=True)
elif cfg.n2n:
gt_img = noise_xform(raw_img).cuda(non_blocking=True)
else:
gt_img = mid_img
# gt_img = torch.normal(raw_zm_img,noise_level/255.)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Dataset Augmentation
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# burst,gt_img = apply_transformations(burst,gt_img)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Experimentally Set Hyperparams
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- [before training] setting the ps and nh --
# test_ps_nh_sizes(cfg,model,burst)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Formatting Images & FP
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
patches = sample_burst_patches(cfg, model, burst + 0.5)
input_patches_0 = model.patch_helper.form_input_patches(patches)
f_patches = torch.flip(patches, dims=(0, )) # reverse
input_patches_1 = model.patch_helper.form_input_patches(f_patches)
final_loss = model(input_patches_0)
final_loss += model(input_patches_1)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- total loss --
running_loss += final_loss.item()
total_loss += final_loss.item()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Gradients & Backpropogration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- compute the gradients! --
final_loss.backward()
# -- backprop now. --
optimizer.step()
model.update_moving_average()
# scheduler.step()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Printing to Stdout
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if (batch_idx % cfg.log_interval) == 0 and batch_idx > 0:
# -- update losses --
running_loss /= cfg.log_interval
# -- write to stdout --
write_info = (epoch, cfg.epochs, batch_idx, steps_per_epoch,
running_loss)
print("[%d/%d][%d/%d]: %2.3e" % write_info)
nbatches = 2
burst = burst[:, :nbatches] # limit batch size to run test
psnrs_sim = test_sim_search(cfg, burst + 0.5, model)
psnrs_ftr = psnrs_sim[cfg.byol_backbone_name]
psnrs_pix = psnrs_sim["pix"]
print_psnr_results(psnrs_ftr, "[PSNR-ftr]")
print_psnr_results(psnrs_pix, "[PSNR-pix]")
print_edge_info(burst)
# psnrs = test_sim_search(cfg,burst,model)
# print_psnr_results(psnrs,"[PSNR-ftr]")
# psnrs = test_sim_search_pix(cfg,burst,model)
# print_psnr_results(psnrs,"[PSNR-pix]")
# -- reset loss --
running_loss = 0
if use_timer: clock.toc()
if use_timer:
print("data_clock", data_clock.average_time)
print("clock", clock.average_time)
cfg.global_step += 1
total_loss /= len(train_loader)
return total_loss, record_losses
def train_loop(cfg, model, scheduler, train_loader, epoch, record_losses,
writer):
# -=-=-=-=-=-=-=-=-=-=-
#
# Setup for epoch
#
# -=-=-=-=-=-=-=-=-=-=-
model.align_info.model.train()
model.denoiser_info.model.train()
model.unet_info.model.train()
model.denoiser_info.model = model.denoiser_info.model.to(cfg.device)
model.align_info.model = model.align_info.model.to(cfg.device)
model.unet_info.model = model.unet_info.model.to(cfg.device)
N = cfg.N
total_loss = 0
running_loss = 0
szm = ScaleZeroMean()
blocksize = 128
unfold = torch.nn.Unfold(blocksize, 1, 0, blocksize)
use_record = False
if record_losses is None:
record_losses = pd.DataFrame({
'burst': [],
'ave': [],
'ot': [],
'psnr': [],
'psnr_std': []
})
noise_type = cfg.noise_params.ntype
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
align_mse_losses, align_mse_count = 0, 0
rec_mse_losses, rec_mse_count = 0, 0
rec_ot_losses, rec_ot_count = 0, 0
running_loss, total_loss = 0, 0
dynamics_acc, dynamics_count = 0, 0
write_examples = False
write_examples_iter = 200
noise_level = cfg.noise_params['g']['stddev']
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Load Pre-Simulated Random Numbers
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if cfg.use_kindex_lmdb: kindex_ds = kIndexPermLMDB(cfg.batch_size, cfg.N)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Dataset Augmentation
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
transforms = [tvF.vflip, tvF.hflip, tvF.rotate]
aug = RandomChoice(transforms)
def apply_transformations(burst, gt_img):
N, B = burst.shape[:2]
gt_img_rs = rearrange(gt_img, 'b c h w -> 1 b c h w')
all_images = torch.cat([gt_img_rs, burst], dim=0)
all_images = rearrange(all_images, 'n b c h w -> (n b) c h w')
tv_utils.save_image(all_images,
'aug_original.png',
nrow=N + 1,
normalize=True)
aug_images = aug(all_images)
tv_utils.save_image(aug_images,
'aug_augmented.png',
nrow=N + 1,
normalize=True)
aug_images = rearrange(aug_images, '(n b) c h w -> n b c h w', b=B)
aug_gt_img = aug_images[0]
aug_burst = aug_images[1:]
return aug_burst, aug_gt_img
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Half Precision
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# model.align_info.model.half()
# model.denoiser_info.model.half()
# model.unet_info.model.half()
# models = [model.align_info.model,
# model.denoiser_info.model,
# model.unet_info.model]
# for model_l in models:
# model_l.half()
# for layer in model_l.modules():
# if isinstance(layer, torch.nn.BatchNorm2d):
# layer.float()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Init Loss Functions
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
alignmentLossMSE = BurstRecLoss()
denoiseLossMSE = BurstRecLoss(alpha=cfg.kpn_burst_alpha,
gradient_L1=~cfg.supervised)
# denoiseLossOT = BurstResidualLoss()
entropyLoss = EntropyLoss()
# -=-=-=-=-=-=-=-=-=-=-=-=-
#
# Add hooks for epoch
#
# -=-=-=-=-=-=-=-=-=-=-=-=-
align_hook = AlignmentFilterHooks(cfg.N)
align_hooks = []
for kpn_module in model.align_info.model.children():
for name, layer in kpn_module.named_children():
if name == "filter_cls":
align_hook_handle = layer.register_forward_hook(align_hook)
align_hooks.append(align_hook_handle)
# -=-=-=-=-=-=-=-=-=-=-
#
# Noise2Noise
#
# -=-=-=-=-=-=-=-=-=-=-
noise_xform = get_noise_transform(cfg.noise_params, use_to_tensor=False)
# -=-=-=-=-=-=-=-=-=-=-
#
# Final Configs
#
# -=-=-=-=-=-=-=-=-=-=-
use_timer = False
one = torch.FloatTensor([1.]).to(cfg.device)
switch = True
if use_timer:
data_clock = Timer()
clock = Timer()
ds_size = len(train_loader)
small_ds = ds_size < 500
steps_per_epoch = ds_size if not small_ds else 500
write_examples_iter = steps_per_epoch // 3
all_filters = []
# -=-=-=-=-=-=-=-=-=-=-
#
# Start Epoch
#
# -=-=-=-=-=-=-=-=-=-=-
dynamics_acc_i = -1.
if cfg.use_seed:
init = torch.initial_seed()
torch.manual_seed(cfg.seed + 1 + epoch + init)
train_iter = iter(train_loader)
for batch_idx in range(steps_per_epoch):
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Setting up for Iteration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- setup iteration timer --
if use_timer:
data_clock.tic()
clock.tic()
# -- grab data batch --
if small_ds and batch_idx >= ds_size:
if cfg.use_seed:
init = torch.initial_seed()
torch.manual_seed(cfg.seed + 1 + epoch + init)
train_iter = iter(train_loader) # reset if too big
sample = next(train_iter)
burst, raw_img, motion = sample['burst'], sample['clean'], sample[
'flow']
raw_img_iid = sample['iid']
raw_img_iid = raw_img_iid.cuda(non_blocking=True)
burst = burst.cuda(non_blocking=True)
# -- handle possibly cached simulated bursts --
if 'sim_burst' in sample:
sim_burst = rearrange(sample['sim_burst'],
'b n k c h w -> n b k c h w')
else:
sim_burst = None
non_sim_method = cfg.n2n or cfg.supervised
if sim_burst is None and not (non_sim_method or cfg.abps):
if sim_burst is None:
if cfg.use_kindex_lmdb:
kindex = kindex_ds[batch_idx].cuda(non_blocking=True)
else:
kindex = None
query = burst[[N // 2]]
database = torch.cat([burst[:N // 2], burst[N // 2 + 1:]])
sim_burst = compute_similar_bursts(
cfg,
query,
database,
cfg.sim_K,
noise_level / 255.,
patchsize=cfg.sim_patchsize,
shuffle_k=cfg.sim_shuffleK,
kindex=kindex,
only_middle=cfg.sim_only_middle,
search_method=cfg.sim_method,
db_level="frame")
if (sim_burst is None) and cfg.abps:
# scores,aligned = abp_search(cfg,burst)
# scores,aligned = lpas_search(cfg,burst,motion)
if cfg.lpas_method == "spoof":
mtype = "global"
acc = cfg.optical_flow_acc
scores, aligned = lpas_spoof(burst, motion, cfg.nblocks, mtype,
acc)
else:
ref_frame = (cfg.nframes + 1) // 2
nblocks = cfg.nblocks
method = cfg.lpas_method
scores, aligned, dacc = lpas_search(burst, ref_frame, nblocks,
motion, method)
dynamics_acc_i = dacc
# scores,aligned = lpas_spoof(motion,accuracy=cfg.optical_flow_acc)
# shuffled = shuffle_aligned_pixels_noncenter(aligned,cfg.nframes)
nsims = cfg.nframes
sim_aligned = create_sim_from_aligned(burst, aligned, nsims)
burst_s = rearrange(burst, 't b c h w -> t b 1 c h w')
sim_burst = torch.cat([burst_s, sim_aligned], dim=2)
# print("sim_burst.shape",sim_burst.shape)
# raw_img = raw_img.cuda(non_blocking=True)-0.5
# # print(np.sqrt(cfg.noise_params['g']['stddev']))
# print(motion)
# tiled = tile_across_blocks(burst[[cfg.nframes//2]],cfg.nblocks)
# rep_burst = repeat(burst,'t b c h w -> t b g c h w',g=tiled.shape[2])
# for t in range(cfg.nframes):
# save_image(tiled[0] - rep_burst[t],f"tiled_sub_burst_{t}.png")
# save_image(aligned,"aligned.png")
# print(aligned.shape)
# # save_image(aligned[0] - aligned[cfg.nframes//2],"aligned_0.png")
# # save_image(aligned[2] - aligned[cfg.nframes//2],"aligned_2.png")
# M = (1+cfg.dynamic.ppf)*cfg.nframes
# fs = cfg.dynamic.frame_size - M
# fs = cfg.frame_size
# cropped = crop_center_patch([burst,aligned,raw_img],cfg.nframes,cfg.frame_size)
# burst,aligned,raw_img = cropped[0],cropped[1],cropped[2]
# print(aligned.shape)
# for t in range(cfg.nframes+1):
# diff_t = aligned[t] - raw_img
# spacing = cfg.nframes+1
# diff_t = crop_center_patch([diff_t],spacing,cfg.frame_size)[0]
# print_tensor_stats(f"diff_aligned_{t}",diff_t)
# save_image(diff_t,f"diff_aligned_{t}.png")
# if t < cfg.nframes:
# dt = aligned[t+1]-aligned[t]
# dt = crop_center_patch([dt],spacing,cfg.frame_size)[0]
# save_image(dt,f"dt_aligned_{t+1}m{t}.png")
# save_image(aligned[t],f"aligned_{t}.png")
# diff_t = tvF.crop(aligned[t] - raw_img,cfg.nframes,cfg.nframes,fs,fs)
# print_tensor_stats(f"diff_aligned_{t}",diff_t)
# save_image(burst,"burst.png")
# save_image(burst[0] - burst[cfg.nframes//2],"burst_0.png")
# save_image(burst[2] - burst[cfg.nframes//2],"burst_2.png")
# exit()
# print(sample['burst'].shape,sample['res'].shape)
# b_clean = sample['burst'] - sample['res']
# scores,ave,t_aligned = test_abp_global_search(cfg,b_clean,noisy_img=burst)
# burstBN = rearrange(burst,'n b c h w -> (b n) c h w')
# tv_utils.save_image(burstBN,"abps_burst.png",normalize=True)
# alignedBN = rearrange(aligned,'n b c h w -> (b n) c h w')
# tv_utils.save_image(alignedBN,"abps_aligned.png",normalize=True)
# rep_burst = burst[[N//2]].repeat(N,1,1,1,1)
# deltaBN = rearrange(aligned - rep_burst,'n b c h w -> (b n) c h w')
# tv_utils.save_image(deltaBN,"abps_delta.png",normalize=True)
# b_clean_rep = b_clean[[N//2]].repeat(N,1,1,1,1)
# tdeltaBN = rearrange(t_aligned - b_clean_rep.cpu(),'n b c h w -> (b n) c h w')
# tv_utils.save_image(tdeltaBN,"abps_tdelta.png",normalize=True)
if non_sim_method:
sim_burst = burst.unsqueeze(2).repeat(1, 1, 2, 1, 1, 1)
else:
sim_burst = sim_burst.cuda(non_blocking=True)
if use_timer: data_clock.toc()
# -- to cuda --
burst = burst.cuda(non_blocking=True)
raw_zm_img = szm(raw_img.cuda(non_blocking=True))
# anscombe.test(cfg,burst_og)
# save_image(burst,f"burst_{batch_idx}_{cfg.n2n}.png")
# -- crop images --
if True: #cfg.abps or cfg.abps_inputs:
images = [burst, sim_burst, raw_img, raw_img_iid]
spacing = burst.shape[0] # we use frames as spacing
cropped = crop_center_patch(images, spacing, cfg.frame_size)
burst, sim_burst = cropped[0], cropped[1]
raw_img, raw_img_iid = cropped[2], cropped[3]
if cfg.abps or cfg.abps_inputs:
aligned = crop_center_patch([aligned], spacing,
cfg.frame_size)[0]
# print_tensor_stats("d-eq?",burst[-1] - aligned[-1])
burst = burst[:cfg.nframes] # last frame is target
# -- getting shapes of data --
N, B, C, H, W = burst.shape
burst_og = burst.clone()
# -- shuffle over Simulated Samples --
k_ins, k_outs = create_k_grid(sim_burst, shuffle=True)
k_ins, k_outs = [k_ins[0]], [k_outs[0]]
# k_ins,k_outs = create_k_grid_v3(sim_burst)
for k_in, k_out in zip(k_ins, k_outs):
if k_in == k_out: continue
# -- zero gradients; ready 2 go --
model.align_info.model.zero_grad()
model.align_info.optim.zero_grad()
model.denoiser_info.model.zero_grad()
model.denoiser_info.optim.zero_grad()
model.unet_info.model.zero_grad()
model.unet_info.optim.zero_grad()
# -- compute input/output data --
if cfg.sim_only_middle and (not cfg.abps):
# sim_burst.shape == T,B,K,C,H,W
midi = 0 if sim_burst.shape[0] == 1 else N // 2
left_burst, right_burst = burst[:N // 2], burst[N // 2 + 1:]
cat_burst = [
left_burst, sim_burst[[midi], :, k_in], right_burst
]
burst = torch.cat(cat_burst, dim=0)
mid_img = sim_burst[midi, :, k_out]
elif cfg.abps and (not cfg.abps_inputs):
# -- v1 --
mid_img = aligned[-1]
# -- v2 --
# left_aligned,right_aligned = aligned[:N//2],aligned[N//2+1:]
# nc_aligned = torch.cat([left_aligned,right_aligned],dim=0)
# shuf = shuffle_aligned_pixels(nc_aligned,cfg.nframes)
# mid_img = shuf[1]
# ---- v3 ----
# shuf = shuffle_aligned_pixels(aligned)
# shuf = aligned[[N//2,0]]
# midi = 0 if sim_burst.shape[0] == 1 else N//2
# left_burst,right_burst = burst[:N//2],burst[N//2+1:]
# burst = torch.cat([left_burst,shuf[[0]],right_burst],dim=0)
# nc_burst = torch.cat([left_burst,right_burst],dim=0)
# shuf = shuffle_aligned_pixels(aligned)
# ---- v4 ----
# nc_shuf = shuffle_aligned_pixels(nc_aligned)
# mid_img = nc_shuf[0]
# pick = npr.randint(0,2,size=(1,))[0]
# mid_img = nc_aligned[pick]
# mid_img = shuf[1]
# save_image(shuf,"shuf.png")
# print(shuf.shape)
# diff = raw_img.cuda(non_blocking=True) - aligned[0]
# mean = torch.mean(diff).item()
# std = torch.std(diff).item()
# print(mean,std)
# -- v1 --
# burst = burst
# notMid = sample_not_mid(N)
# mid_img = aligned[notMid]
elif cfg.abps_inputs:
burst = aligned.clone()
burst_og = aligned.clone()
mid_img = shuffle_aligned_pixels(burst, cfg.nframes)[0]
else:
burst = sim_burst[:, :, k_in]
mid_img = sim_burst[N // 2, :, k_out]
# mid_img = sim_burst[N//2,:]
# print(burst.shape,mid_img.shape)
# print(F.mse_loss(burst,mid_img).item())
if cfg.supervised:
gt_img = get_nmlz_tgt_img(cfg, raw_img).cuda(non_blocking=True)
elif cfg.n2n:
gt_img = raw_img_iid #noise_xform(raw_img).cuda(non_blocking=True)
else:
gt_img = mid_img
# another = noise_xform(raw_img).cuda(non_blocking=True)
# print_tensor_stats("a-iid?",raw_img_iid.cuda() - raw_img.cuda())
# print_tensor_stats("b-iid?",mid_img.cuda() - raw_img.cuda())
# print_tensor_stats("c-iid?",mid_img.cuda() - another)
# print_tensor_stats("d-iid?",raw_img_iid.cuda() - another)
# print_tensor_stats("e-iid?",mid_img.cuda() - raw_img_iid.cuda())
# for bt in range(cfg.nframes):
# tiled = tile_across_blocks(burst[[bt]],cfg.nblocks)
# rep_burst = repeat(burst,'t b c h w -> t b g c h w',g=tiled.shape[2])
# for t in range(cfg.nframes):
# save_image(tiled[0] - rep_burst[t],f"tiled_{bt}_sub_burst_{t}.png")
# print_tensor_stats(f"delta_{bt}_{t}",tiled[0,:,4] - burst[t])
# raw_img = raw_img.cuda(non_blocking=True) - 0.5
# print_tensor_stats("gt_img - raw",gt_img - raw_img)
# # save_image(gt_img,"gt.png")
# # save_image(raw,"raw.png")
# save_image(gt_img - raw_img,"gt_sub_raw.png")
# print_tensor_stats("burst[N//2] - raw",burst[N//2] - raw_img)
# save_image(burst[N//2] - raw_img,"burst_sub_raw.png")
# print_tensor_stats("burst[N//2] - gt_img",burst[N//2] - gt_img)
# save_image(burst[N//2] - gt_img,"burst_sub_gt.png")
# print_tensor_stats("aligned[N//2] - raw",aligned[N//2] - raw_img)
# save_image(aligned[N//2] - raw_img,"aligned_sub_raw.png")
# print_tensor_stats("aligned[N//2] - burst[N//2]",
# aligned[N//2] - burst[N//2])
# save_image(aligned[N//2] - burst[N//2],"aligned_sub_burst.png")
# gt_img = torch.normal(raw_zm_img,noise_level/255.)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Dataset Augmentation
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# burst,gt_img = apply_transformations(burst,gt_img)
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Formatting Images for FP
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
stacked_burst = rearrange(burst, 'n b c h w -> b n c h w')
cat_burst = rearrange(burst, 'n b c h w -> (b n) c h w')
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Foward Pass
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
outputs = model(burst)
m_aligned, m_aligned_ave, denoised, denoised_ave = outputs[:4]
aligned_filters, denoised_filters = outputs[4:]
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Decrease Entropy within a Kernel
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
filters_entropy = 0
filters_entropy_coeff = 0. # 1000.
all_filters = []
L = len(align_hook.filters)
iter_filters = align_hook.filters if L > 0 else [aligned_filters]
for filters in iter_filters:
f_shape = 'b n k2 c h w -> (b n c h w) k2'
filters_shaped = rearrange(filters, f_shape)
filters_entropy += one #entropyLoss(filters_shaped)
all_filters.append(filters)
if L > 0: filters_entropy /= L
all_filters = torch.stack(all_filters, dim=1)
align_hook.clear()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Reconstruction Losses (MSE)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
losses = [F.mse_loss(denoised_ave, gt_img)]
# losses = denoiseLossMSE(denoised,denoised_ave,gt_img,cfg.global_step)
# losses = [ one, one ]
# ave_loss,burst_loss = [loss.item() for loss in losses]
rec_mse = np.sum(losses)
# rec_mse = F.mse_loss(denoised_ave,gt_img)
rec_mse_coeff = 1.
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Reconstruction Losses (Distribution)
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
gt_img_rep = gt_img.unsqueeze(1).repeat(1, denoised.shape[1], 1, 1,
1)
residuals = denoised - gt_img_rep
rec_ot = torch.FloatTensor([0.]).to(cfg.device)
# rec_ot = kl_gaussian_bp(residuals,noise_level,flip=True)
# rec_ot = kl_gaussian_bp_patches(residuals,noise_level,flip=True,patchsize=16)
if torch.any(torch.isnan(rec_ot)):
rec_ot = torch.FloatTensor([0.]).to(cfg.device)
if torch.any(torch.isinf(rec_ot)):
rec_ot = torch.FloatTensor([0.]).to(cfg.device)
rec_ot_coeff = 0.
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Final Losses
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
rec_loss = rec_mse_coeff * rec_mse + rec_ot_coeff * rec_ot
final_loss = rec_loss
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Record Keeping
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- reconstruction MSE --
rec_mse_losses += rec_mse.item()
rec_mse_count += 1
# -- reconstruction Dist. --
rec_ot_losses += rec_ot.item()
rec_ot_count += 1
# -- dynamic acc -
dynamics_acc += dynamics_acc_i
dynamics_count += 1
# -- total loss --
running_loss += final_loss.item()
total_loss += final_loss.item()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Gradients & Backpropogration
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# -- compute the gradients! --
if cfg.use_seed: torch.set_deterministic(False)
final_loss.backward()
if cfg.use_seed: torch.set_deterministic(True)
# -- backprop now. --
model.align_info.optim.step()
model.denoiser_info.optim.step()
model.unet_info.optim.step()
scheduler.step()
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
# Printing to Stdout
#
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if (batch_idx % cfg.log_interval) == 0 and batch_idx > 0:
# -- recompute model output for original images --
outputs = model(burst_og)
m_aligned, m_aligned_ave, denoised, denoised_ave = outputs[:4]
aligned_filters, denoised_filters = outputs[4:]
# -- compute mse for fun --
B = raw_img.shape[0]
raw_img = raw_img.cuda(non_blocking=True)
raw_img = get_nmlz_tgt_img(cfg, raw_img)
# -- psnr for [average of aligned frames] --
mse_loss = F.mse_loss(raw_img, m_aligned_ave,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_aligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_aligned_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [average of input, misaligned frames] --
mis_ave = torch.mean(burst_og, dim=0)
if noise_type == "qis": mis_ave = quantize_img(cfg, mis_ave)
mse_loss = F.mse_loss(raw_img, mis_ave,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_misaligned_ave = np.mean(mse_to_psnr(mse_loss))
psnr_misaligned_std = np.std(mse_to_psnr(mse_loss))
# tv_utils.save_image(raw_img,"raw.png",nrow=1,normalize=True,range=(-0.5,1.25))
# tv_utils.save_image(mis_ave,"mis.png",nrow=1,normalize=True,range=(-0.5,1.25))
# -- psnr for [bm3d] --
mid_img_og = burst[N // 2]
bm3d_nb_psnrs = []
M = 4 if B > 4 else B
for b in range(M):
bm3d_rec = bm3d.bm3d(mid_img_og[b].cpu().transpose(0, 2) + 0.5,
sigma_psd=noise_level / 255,
stage_arg=bm3d.BM3DStages.ALL_STAGES)
bm3d_rec = torch.FloatTensor(bm3d_rec).transpose(0, 2)
# maybe an issue here
b_loss = F.mse_loss(raw_img[b].cpu(),
bm3d_rec,
reduction='none').reshape(1, -1)
b_loss = torch.mean(b_loss, 1).detach().cpu().numpy()
bm3d_nb_psnr = np.mean(mse_to_psnr(b_loss))
bm3d_nb_psnrs.append(bm3d_nb_psnr)
bm3d_nb_ave = np.mean(bm3d_nb_psnrs)
bm3d_nb_std = np.std(bm3d_nb_psnrs)
# -- psnr for input averaged frames --
# burst_ave = torch.mean(burst_og,dim=0)
# mse_loss = F.mse_loss(raw_img,burst_ave,reduction='none').reshape(B,-1)
# mse_loss = torch.mean(mse_loss,1).detach().cpu().numpy()
# psnr_input_ave = np.mean(mse_to_psnr(mse_loss))
# psnr_input_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for aligned + denoised --
R = denoised.shape[1]
raw_img_repN = raw_img.unsqueeze(1).repeat(1, R, 1, 1, 1)
# if noise_type == "qis": denoised = quantize_img(cfg,denoised)
# save_image(denoised_ave,"denoised_ave.png")
# save_image(denoised,"denoised.png")
mse_loss = F.mse_loss(raw_img_repN, denoised,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr_denoised_ave = np.mean(mse_to_psnr(mse_loss))
psnr_denoised_std = np.std(mse_to_psnr(mse_loss))
# -- psnr for [model output image] --
mse_loss = F.mse_loss(raw_img, denoised_ave,
reduction='none').reshape(B, -1)
mse_loss = torch.mean(mse_loss, 1).detach().cpu().numpy()
psnr = np.mean(mse_to_psnr(mse_loss))
psnr_std = np.std(mse_to_psnr(mse_loss))
# -- update losses --
running_loss /= cfg.log_interval
# -- reconstruction MSE --
rec_mse_ave = rec_mse_losses / rec_mse_count
rec_mse_losses, rec_mse_count = 0, 0
# -- reconstruction Dist. --
rec_ot_ave = rec_ot_losses / rec_ot_count
rec_ot_losses, rec_ot_count = 0, 0
# -- ave dynamic acc --
ave_dyn_acc = dynamics_acc / dynamics_count * 100.
dynamics_acc, dynamics_count = 0, 0
# -- write record --
if use_record:
info = {
'burst': burst_loss,
'ave': ave_loss,
'ot': rec_ot_ave,
'psnr': psnr,
'psnr_std': psnr_std
}
record_losses = record_losses.append(info, ignore_index=True)
# -- write to stdout --
write_info = (epoch, cfg.epochs, batch_idx, steps_per_epoch,
running_loss, psnr, psnr_std, psnr_denoised_ave,
psnr_denoised_std, psnr_aligned_ave,
psnr_aligned_std, psnr_misaligned_ave,
psnr_misaligned_std, bm3d_nb_ave, bm3d_nb_std,
rec_mse_ave, ave_dyn_acc) #rec_ot_ave)
#print("[%d/%d][%d/%d]: %2.3e [PSNR]: %2.2f +/- %2.2f [den]: %2.2f +/- %2.2f [al]: %2.2f +/- %2.2f [mis]: %2.2f +/- %2.2f [bm3d]: %2.2f +/- %2.2f [r-mse]: %.2e [r-ot]: %.2e" % write_info)
print(
"[%d/%d][%d/%d]: %2.3e [PSNR]: %2.2f +/- %2.2f [den]: %2.2f +/- %2.2f [al]: %2.2f +/- %2.2f [mis]: %2.2f +/- %2.2f [bm3d]: %2.2f +/- %2.2f [r-mse]: %.2e [dyn]: %.2e"
% write_info,
flush=True)
# -- write to summary writer --
if writer:
writer.add_scalar('train/running-loss', running_loss,
cfg.global_step)
writer.add_scalars('train/model-psnr', {
'ave': psnr,
'std': psnr_std
}, cfg.global_step)
writer.add_scalars('train/dn-frame-psnr', {
'ave': psnr_denoised_ave,
'std': psnr_denoised_std
}, cfg.global_step)
# -- reset loss --
running_loss = 0
# -- write examples --
if write_examples and (batch_idx % write_examples_iter) == 0 and (
batch_idx > 0 or cfg.global_step == 0):
write_input_output(cfg, model, stacked_burst, aligned, denoised,
all_filters, motion)
if use_timer: clock.toc()
if use_timer:
print("data_clock", data_clock.average_time)
print("clock", clock.average_time)
cfg.global_step += 1
# -- remove hooks --
for hook in align_hooks:
hook.remove()
total_loss /= len(train_loader)
return total_loss, record_losses