def forward(self, inputs):
x = self.down_layer(inputs)
gap = porch.nn.functional.adaptive_avg_pool2d(x, 1)
gap_logit = self.gap_fc(gap.view(x.shape[0], -1))
gap_weight = porch.Tensor(list(self.gap_fc.parameters())[0]).permute(1,0)
gap = x * gap_weight.unsqueeze(2).unsqueeze(3)
gmp = porch.nn.functional.adaptive_max_pool2d(x, 1)
gmp_logit = self.gmp_fc(gmp.view(x.shape[0], -1))
gmp_weight = porch.Tensor(list(self.gmp_fc.parameters())[0]).permute(1,0)
gmp = x * gmp_weight.unsqueeze(2).unsqueeze(3)
cam_logit = porch.cat([gap_logit, gmp_logit], 1)
x = porch.cat([gap, gmp], 1)
x = self.relu(self.conv1x1(x))
x =porch.Tensor(x)
heatmap = porch.sum(x, dim=1, keepdim=True)
if self.light:
x_ = porch.nn.functional.adaptive_avg_pool2d(x, 1)
x_ = self.fc(x_.view(x_.shape[0], -1))
else:
x_ = self.fc(x.view(x.shape[0], -1))
gamma, beta = self.gamma(x_), self.beta(x_)
for i in range(self.n_res):
x = getattr(self, "ResNetAdaILNBlock_" + str(i + 1))(x, gamma, beta)
out = self.up_layer(x)
return out, cam_logit ,heatmap
def forward(self, input):
x = self.DownBlock(input)
gap = torch.nn.functional.adaptive_avg_pool2d(x, 1)
gap_logit = self.gap_fc(gap.view(x.shape[0], -1))
gap_weight = list(self.gap_fc.parameters())[0]
gap = x * gap_weight.unsqueeze(2).unsqueeze(3)
gmp = torch.nn.functional.adaptive_max_pool2d(x, 1)
gmp_logit = self.gmp_fc(gmp.view(x.shape[0], -1))
gmp_weight = list(self.gmp_fc.parameters())[0]
gmp = x * gmp_weight.unsqueeze(2).unsqueeze(3)
cam_logit = torch.cat([gap_logit, gmp_logit], 1)
x = torch.cat([gap, gmp], 1)
x = self.relu(self.conv1x1(x))
heatmap = torch.sum(x, dim=1, keepdim=True)
if self.light:
x_ = torch.nn.functional.adaptive_avg_pool2d(x, 1)
x_ = self.FC(x_.view(x_.shape[0], -1))
else:
x_ = self.FC(x.view(x.shape[0], -1))
gamma, beta = self.gamma(x_), self.beta(x_)
for i in range(self.n_blocks):
x = getattr(self, 'UpBlock1_' + str(i + 1))(x, gamma, beta)
out = self.UpBlock2(x)
return out, cam_logit, heatmap
def video_ref(nets, args, x_src, x_ref, y_ref, fname):
x_ref.stop_gradient = True
y_ref.stop_gradient = True
x_src.stop_gradient = True
video = []
s_ref = nets.style_encoder(x_ref, y_ref)
s_prev = None
for data_next in tqdm(zip(x_ref, y_ref, s_ref), 'video_ref', len(x_ref)):
x_next, y_next, s_next = [
porch.varbase_to_tensor(d).unsqueeze(0) for d in data_next
]
if s_prev is None:
x_prev, y_prev, s_prev = x_next, y_next, s_next
continue
if y_prev != y_next:
x_prev, y_prev, s_prev = x_next, y_next, s_next
continue
interpolated = interpolate(nets, args, x_src, s_prev, s_next)
entries = [x_prev, x_next]
slided = slide(entries) # (T, C, 256*2, 256)
frames = porch.cat([slided, interpolated],
dim=3).cpu() # (T, C, 256*2, 256*(batch+1))
video.append(frames)
x_prev, y_prev, s_prev = x_next, y_next, s_next
# append last frame 10 time
for _ in range(10):
video.append(frames[-1:])
video = tensor2ndarray255(porch.cat(video))
save_video(fname, video)
def accumulate_inception_activations(sample, net, num_inception_images=50000):
pool, logits, labels = [], [], []
while (torch.cat(logits, 0).shape[0] if len(logits) else 0) < num_inception_images:
with torch.no_grad():
images, labels_val = sample()
pool_val, logits_val = net(images.astype("float32"))
pool += [pool_val]
logits += [F.softmax(logits_val, 1)]
labels += [labels_val]
return torch.cat(pool, 0), torch.cat(logits, 0), torch.cat(labels, 0)
def video_latent(nets, args, x_src, y_list, z_list, psi, fname):
x_src.stop_gradient = True
latent_dim = z_list[0].size(1)
s_list = []
for i, y_trg in enumerate(y_list):
z_many = porch.randn(10000, latent_dim)
y_many = porch.LongTensor(10000).fill_(y_trg[0])
s_many = nets.mapping_network(z_many, y_many)
s_avg = porch.mean(s_many, dim=0, keepdim=True)
s_avg = s_avg.repeat(x_src.size(0), 1)
for z_trg in z_list:
s_trg = nets.mapping_network(z_trg, y_trg)
s_trg = porch.lerp(s_avg, s_trg, psi)
s_list.append(s_trg)
s_prev = None
video = []
# fetch reference images
for idx_ref, s_next in enumerate(tqdm(s_list, 'video_latent',
len(s_list))):
if s_prev is None:
s_prev = s_next
continue
if idx_ref % len(z_list) == 0:
s_prev = s_next
continue
frames = interpolate(nets, args, x_src, s_prev, s_next).cpu()
video.append(frames)
s_prev = s_next
for _ in range(10):
video.append(frames[-1:])
video = tensor2ndarray255(porch.cat(video))
save_video(fname, video)
def _rwr_trace_to_dgl_graph(g,
seed,
trace,
positional_embedding_size,
entire_graph=False):
subv = torch.unique(torch.cat(trace)).detach().cpu().numpy().tolist()
try:
subv.remove(seed)
except ValueError:
pass
subv = [seed] + subv
if entire_graph:
subg = g.subgraph(g.nodes())
else:
subg = g.subgraph(subv)
subg = _add_undirected_graph_positional_embedding(
subg, positional_embedding_size)
subg.ndata["seed"] = torch.zeros(subg.number_of_nodes(), dtype=torch.long)
if entire_graph:
subg.ndata["seed"][seed] = 1
else:
subg.ndata["seed"][0] = 1
return subg
def __init__(self,
height=64,
width=64,
with_r=False,
with_boundary=False):
super(AddCoordsTh, self).__init__()
self.with_r = with_r
self.with_boundary = with_boundary
device = torch.device(
'cuda' if torch.cuda.is_available() else 'cpu')
with torch.no_grad():
x_coords = torch.arange(height).unsqueeze(1).expand(
height, width).float()
y_coords = torch.arange(width).unsqueeze(0).expand(
height, width).float()
x_coords = (x_coords / (height - 1)) * 2 - 1
y_coords = (y_coords / (width - 1)) * 2 - 1
coords = torch.stack([x_coords, y_coords],
dim=0) # (2, height, width)
if self.with_r:
rr = torch.sqrt(
torch.pow(x_coords, 2) +
torch.pow(y_coords, 2)) # (height, width)
rr = (rr / torch.max(rr)).unsqueeze(0)
coords = torch.cat([coords, rr], dim=0)
self.coords = coords.unsqueeze(0).to(
device) # (1, 2 or 3, height, width)
self.x_coords = x_coords.to(device)
self.y_coords = y_coords.to(device)
def forward(self, z, y):
# If hierarchical, concatenate zs and ys
if self.hier:
zs = torch.split(z, self.z_chunk_size, 1)
z = zs[0]
ys = [torch.cat([y, item], 1) for item in zs[1:]]
else:
ys = [y] * len(self.blocks)
# First linear layer
h = torch.Tensor(self.linear(z))
# Reshape
h = h.view(h.size(0), -1, self.bottom_width, self.bottom_width)
# Loop over blocks
for index, blocklist in enumerate(self.blocks):
# Second inner loop in case block has multiple layers
for block in blocklist:
h = block(h, torch.Tensor(ys[index]))
# Apply batchnorm-relu-conv-tanh at output
return torch.tanh(self.output_layer(h))
def translate_using_latent(nets, args, x_src, y_trg_list, z_trg_list, psi,
filename):
n_images = 100
x_src.stop_gradient = True
N, C, H, W = x_src.shape
latent_dim = z_trg_list[0].shape[1]
x_concat = [x_src]
masks = nets.fan.get_heatmap(x_src) if args.w_hpf > 0 else None
for i, y_trg in enumerate(y_trg_list):
z_many = porch.randn(n_images, latent_dim)
# y_many = porch.LongTensor(10000).fill_(y_trg[0])
y_many = np.empty([n_images])
y_many.fill(y_trg[0].numpy()[0])
y_many = to_variable(y_many)
s_many = nets.mapping_network(z_many, y_many)
s_avg = porch.mean(s_many, dim=0, keepdim=True)
s_avg = s_avg.repeat(N, 1)
for z_trg in z_trg_list:
s_trg = nets.mapping_network(z_trg, y_trg)
s_trg = porch.lerp(s_avg, s_trg, psi)
x_fake = nets.generator(x_src, s_trg, masks=masks)
x_concat += [x_fake]
x_concat = porch.cat(x_concat, dim=0)
save_image(x_concat, N, filename)
def forward(self,
z,
gy,
x=None,
dy=None,
train_G=False,
return_G_z=False,
split_D=False):
# If training G, enable grad tape
if train_G:
self.G.train()
else:
self.G.eval()
# Get Generator output given noise
G_z = self.G(z, self.G.shared(gy))
# Cast as necessary
# Split_D means to run D once with real data and once with fake,
# rather than concatenating along the batch dimension.
if split_D:
D_fake = self.D(G_z, gy)
if x is not None:
D_real = self.D(x, dy)
return D_fake, D_real
else:
if return_G_z:
return D_fake, G_z
else:
return D_fake
# If real data is provided, concatenate it with the Generator's output
# along the batch dimension for improved efficiency.
else:
if x is not None and x.shape[-1] != G_z.shape[-1]:
x = F.interpolate(x, size=G_z.shape[-2:])
D_input = torch.cat([G_z, x], 0) if x is not None else G_z
D_class = torch.cat([gy, dy], 0) if dy is not None else gy
# Get Discriminator output
D_out = self.D(D_input, D_class)
if x is not None:
return torch.split(
D_out, [G_z.shape[0], x.shape[0]]) # D_fake, D_real
else:
if return_G_z:
return D_out, G_z
else:
return D_out
def forward(self, x, heatmap=None):
"""
x: (batch, c, x_dim, y_dim)
"""
coords = self.coords.repeat(x.size(0), 1, 1, 1)
if self.with_boundary and heatmap is not None:
boundary_channel = torch.clamp(heatmap[:, -1:, :, :], 0.0, 1.0)
zero_tensor = torch.zeros_like(self.x_coords)
xx_boundary_channel = torch.where(boundary_channel > 0.05, self.x_coords, zero_tensor).to(
zero_tensor.device)
yy_boundary_channel = torch.where(boundary_channel > 0.05, self.y_coords, zero_tensor).to(
zero_tensor.device)
coords = torch.cat([coords, xx_boundary_channel, yy_boundary_channel], dim=1)
x_and_coords = torch.cat([x, coords], dim=1)
return x_and_coords
def __iter__(self):
degrees = torch.cat([g.in_degrees().double() ** 0.75 for g in self.graphs])
prob = degrees / torch.sum(degrees)
samples = np.random.choice(
self.length, size=self.num_samples, replace=True, p=prob.numpy()
)
for idx in samples:
yield self.__getitem__(idx)
def interpolate(nets, args, x_src, s_prev, s_next):
''' returns T x C x H x W '''
B = x_src.shape[0]
frames = []
masks = nets.fan.get_heatmap(x_src) if args.w_hpf > 0 else None
alphas = get_alphas()
for alpha in alphas:
s_ref = porch.lerp(s_prev, s_next, alpha)
x_fake = nets.generator(x_src, s_ref, masks=masks)
entries = porch.cat([x_src, x_fake], dim=2)
frame = porchvision.utils.make_grid(entries,
nrow=B,
padding=0,
pad_value=-1).unsqueeze(0)
frames.append(frame)
frames = porch.cat(frames)
return frames
def _transform_input(self, x):
if self.transform_input:
x_ch0 = torch.unsqueeze(x[:, 0],
1) * (0.229 / 0.5) + (0.485 - 0.5) / 0.5
x_ch1 = torch.unsqueeze(x[:, 1],
1) * (0.224 / 0.5) + (0.456 - 0.5) / 0.5
x_ch2 = torch.unsqueeze(x[:, 2],
1) * (0.225 / 0.5) + (0.406 - 0.5) / 0.5
x = torch.cat((x_ch0, x_ch1, x_ch2), 1)
return x
def get_landmark(self, x):
x.stop_gradient = True
''' outputs landmarks of x.shape '''
heatmaps = self.get_heatmap(x, b_preprocess=False)
landmarks = []
for i in range(x.size(0)):
pred_landmarks = get_preds_fromhm(heatmaps[i].unsqueeze(0))
landmarks.append(pred_landmarks)
scale_factor = x.size(2) // heatmaps.size(2)
landmarks = torch.cat(landmarks) * scale_factor
return landmarks
def translate_using_reference(nets, args, x_src, x_ref, y_ref, filename):
x_ref.stop_gradient = True
y_ref.stop_gradient = True
x_src.stop_gradient = True
N, C, H, W = x_src.shape
wb = porch.ones(1, C, H, W)
x_src_with_wb = porch.cat([wb, x_src], dim=0)
masks = nets.fan.get_heatmap(x_src) if args.w_hpf > 0 else None
s_ref = nets.style_encoder(x_ref, y_ref)
s_ref_list = s_ref.unsqueeze(1).repeat(1, N, 1)
x_concat = [x_src_with_wb]
for i, s_ref in enumerate(s_ref_list):
x_fake = nets.generator(x_src, s_ref, masks=masks)
x_fake_with_ref = porch.cat([x_ref[i:i + 1], x_fake], dim=0)
x_concat += [x_fake_with_ref]
x_concat = porch.cat(x_concat, dim=0)
save_image(x_concat, N + 1, filename)
del x_concat
def forward(self, inputs):
x = self.model(inputs)
gap = porch.nn.functional.adaptive_avg_pool2d(x, 1)
gap_logit = self.gap_fc(gap.view(x.shape[0], -1))
gap_weight = list(self.gap_fc.parameters())[0]
gap = x * porch.Tensor(gap_weight).unsqueeze(0).unsqueeze(3)
gmp = porch.nn.functional.adaptive_max_pool2d(x, 1)
gmp_logit = self.gmp_fc(gmp.view(x.shape[0], -1))
gmp_weight = list(self.gmp_fc.parameters())[0]
gmp = x * porch.Tensor(gmp_weight).unsqueeze(0).unsqueeze(3)
cam_logit = porch.cat([gap_logit, gmp_logit], 1)
x = porch.cat([gap, gmp], 1)
x = self.leaky_relu(self.conv1x1(x))
heatmap = porch.sum(x, dim=1, keepdim=True)
x = self.pad(x)
out = self.conv(x)
return out, cam_logit,heatmap
def preprocess(x):
"""Preprocess 98-dimensional heatmaps."""
N, C, H, W = x.size()
x = truncate(x)
x = normalize(x)
sw = H // 256
operations = Munch(chin=OPPAIR(0, 3),
eyebrows=OPPAIR(-7 * sw, 2),
nostrils=OPPAIR(8 * sw, 4),
lipupper=OPPAIR(-8 * sw, 4),
liplower=OPPAIR(8 * sw, 4),
lipinner=OPPAIR(-2 * sw, 3))
for part, ops in operations.items():
start, end = index_map[part]
x[:, start:end] = resize(shift(x[:, start:end], ops.shift), ops.resize)
zero_out = porch.cat([
porch.arange(0, index_map.chin.start),
porch.arange(index_map.chin.end, 33),
porch.LongTensor([
index_map.eyebrowsedges.start, index_map.eyebrowsedges.end,
index_map.lipedges.start, index_map.lipedges.end
])
])
x[:, zero_out] = 0
start, end = index_map.nose
x[:, start + 1:end] = shift(x[:, start + 1:end], 4 * sw)
x[:, start:end] = resize(x[:, start:end], 1)
start, end = index_map.eyes
x[:, start:end] = resize(x[:, start:end], 1)
x[:, start:end] = resize(shift(x[:, start:end], -8), 3) + \
shift(x[:, start:end], -24)
# Second-level mask
x2 = deepcopy(x)
x2[:, index_map.chin.start:index_map.chin.end] = 0 # start:end was 0:33
x2[:, index_map.lipedges.start:index_map.lipinner.
end] = 0 # start:end was 76:96
x2[:, index_map.eyebrows.start:index_map.eyebrows.
end] = 0 # start:end was 33:51
x = porch.sum(x, dim=1, keepdim=True) # (N, 1, H, W)
x2 = porch.sum(x2, dim=1, keepdim=True) # mask without faceline and mouth
x[x != x] = 0 # set nan to zero
x2[x != x] = 0 # set nan to zero
return x.clamp_(0, 1), x2.clamp_(0, 1)
def _forward(self, x):
branch1x1 = self.branch1x1(x)
branch3x3 = self.branch3x3_1(x)
branch3x3 = [
self.branch3x3_2a(branch3x3),
self.branch3x3_2b(branch3x3),
]
branch3x3 = torch.cat(branch3x3, 1)
branch3x3dbl = self.branch3x3dbl_1(x)
branch3x3dbl = self.branch3x3dbl_2(branch3x3dbl)
branch3x3dbl = [
self.branch3x3dbl_3a(branch3x3dbl),
self.branch3x3dbl_3b(branch3x3dbl),
]
branch3x3dbl = torch.cat(branch3x3dbl, 1)
branch_pool = F.avg_pool2d(x, kernel_size=3, stride=1, padding=1)
branch_pool = self.branch_pool(branch_pool)
outputs = [branch1x1, branch3x3, branch3x3dbl, branch_pool]
return outputs
def forward(self, z, y):
# If hierarchical, concatenate zs and ys
if self.hier:
z = torch.cat([y, z], 1)
y = z
# First linear layer
h = self.linear(z)
# Reshape
h = h.view(h.size(0), -1, self.bottom_width, self.bottom_width)
# Loop over blocks
for index, blocklist in enumerate(self.blocks):
# Second inner loop in case block has multiple layers
for block in blocklist:
h = block(h, y)
# Apply batchnorm-relu-conv-tanh at output
return torch.tanh(self.output_layer(h))
def translate_and_reconstruct(nets, args, x_src, y_src, x_ref, y_ref,
filename):
x_ref.stop_gradient = True
y_ref.stop_gradient = True
x_src.stop_gradient = True
y_src.stop_gradient = True
N, C, H, W = x_src.shape
s_ref = nets.style_encoder(x_ref, y_ref)
masks = nets.fan.get_heatmap(x_src) if args.w_hpf > 0 else None
x_fake = nets.generator(x_src, s_ref, masks=masks)
s_src = nets.style_encoder(x_src, y_src)
masks = nets.fan.get_heatmap(x_fake) if args.w_hpf > 0 else None
x_rec = nets.generator(x_fake, s_src, masks=masks)
x_concat = [x_src, x_ref, x_fake, x_rec]
x_concat = porch.cat(x_concat, dim=0)
save_image(x_concat, N, filename)
del x_concat
def calculate_fid_given_paths(paths, img_size=256, batch_size=50):
print('Calculating FID given paths %s and %s...' % (paths[0], paths[1]))
device = porch.device('cuda' if porch.cuda.is_available() else 'cpu')
inception = InceptionV3("./metrics/inception_v3_pretrained.pdparams")
inception.eval()
loaders = [get_eval_loader(path, img_size, batch_size) for path in paths]
mu, cov = [], []
for loader in loaders:
actvs = []
for x in tqdm(loader, total=len(loader)):
x = porch.varbase_to_tensor(x[0])
actv = inception(x)
actvs.append(actv)
actvs = porch.cat(actvs, dim=0).numpy()
mu.append(np.mean(actvs, axis=0))
cov.append(np.cov(actvs, rowvar=False))
fid_value = frechet_distance(mu[0], cov[0], mu[1], cov[1])
return fid_value.astype(float)
def shift(x, N):
"""Shift N pixels up or down."""
up = N >= 0
N = abs(N)
_, _, H, W = x.shape
if N == 0:
return x
if up:
head = torch.arange(H - N) + N
tail = torch.arange(N)
else:
head = torch.arange(N) + (H - N)
tail = torch.arange(H - N)
# permutation indices
perm = torch.cat([head, tail])
out = torch.stack([x[:, :, int(a)] for a in perm.numpy()], dim=2)
return out
def shift(x, N):
"""Shift N pixels up or down."""
up = N >= 0
N = abs(N)
_, _, H, W = x.size()
head = porch.arange(N)
tail = porch.arange(H - N)
if up:
head = porch.arange(H - N) + N
tail = porch.arange(N)
else:
head = porch.arange(N) + (H - N)
tail = porch.arange(H - N)
# permutation indices
perm = porch.cat([head, tail]).to(x.device)
out = x[:, :, perm, :]
return out
def forward(self, x):
residual = x
out1 = self.bn1(x)
out1 = F.relu(out1, True)
out1 = self.conv1(out1)
out2 = self.bn2(out1)
out2 = F.relu(out2, True)
out2 = self.conv2(out2)
out3 = self.bn3(out2)
out3 = F.relu(out3, True)
out3 = self.conv3(out3)
out3 = torch.cat((out1, out2, out3), 1)
if self.downsample is not None:
residual = self.downsample(residual)
out3 += residual
return out3
def test_moco(train_loader, model, opt):
"""
one epoch training for moco
"""
model.eval()
emb_list = []
for idx, batch in enumerate(train_loader):
graph_q, graph_k = batch
bsz = graph_q.batch_size
graph_q.to(opt.device)
graph_k.to(opt.device)
with torch.no_grad():
feat_q = model(graph_q)
feat_k = model(graph_k)
assert feat_q.shape == (bsz, opt.hidden_size)
emb_list.append(((feat_q + feat_k) / 2).detach().cpu())
return torch.cat(emb_list)
def slide(entries, margin=32):
"""Returns a sliding reference window.
Args:
entries: a list containing two reference images, x_prev and x_next,
both of which has a shape (1, 3, 256, 256)
Returns:
canvas: output slide of shape (num_frames, 3, 256*2, 256+margin)
"""
_, C, H, W = entries[0].shape
alphas = get_alphas()
T = len(alphas) # number of frames
canvas = -porch.ones(T, C, H * 2, W + margin)
merged = porch.cat(entries, dim=2) # (1, 3, 512, 256)
for t, alpha in enumerate(alphas):
top = int(H * (1 - alpha)) # top, bottom for canvas
bottom = H * 2
m_top = 0 # top, bottom for merged
m_bottom = 2 * H - top
canvas[t, :, top:bottom, :W] = merged[:, :, m_top:m_bottom, :]
return canvas
def make_grid(tensor,
nrow=8,
padding=2,
normalize=False,
range=None,
scale_each=False,
pad_value=0):
"""Make a grid of images.
Args:
tensor (Tensor or list): 4D mini-batch Tensor of shape (B x C x H x W)
or a list of images all of the same size.
nrow (int, optional): Number of images displayed in each row of the grid.
The final grid size is ``(B / nrow, nrow)``. Default: ``8``.
padding (int, optional): amount of padding. Default: ``2``.
normalize (bool, optional): If True, shift the image to the range (0, 1),
by the min and max values specified by :attr:`range`. Default: ``False``.
range (tuple, optional): tuple (min, max) where min and max are numbers,
then these numbers are used to normalize the image. By default, min and max
are computed from the tensor.
scale_each (bool, optional): If ``True``, scale each image in the batch of
images separately rather than the (min, max) over all images. Default: ``False``.
pad_value (float, optional): Value for the padded pixels. Default: ``0``.
Example:
See this notebook `here <https://gist.github.com/anonymous/bf16430f7750c023141c562f3e9f2a91>`_
"""
tensor = torch.Tensor(tensor)
if not (torch.is_tensor(tensor) or
(isinstance(tensor, list)
and all(torch.is_tensor(t) for t in tensor))):
raise TypeError('tensor or list of tensors expected, got {}'.format(
type(tensor)))
# if list of tensors, convert to a 4D mini-batch Tensor
if isinstance(tensor, list):
tensor = torch.stack(tensor, dim=0)
if tensor.dim() == 2: # single image H x W
tensor = tensor.unsqueeze(0)
if tensor.dim() == 3: # single image
if tensor.size(0) == 1: # if single-channel, convert to 3-channel
tensor = torch.cat((tensor, tensor, tensor), 0)
tensor = tensor.unsqueeze(0)
if tensor.dim() == 4 and tensor.size(1) == 1: # single-channel images
tensor = torch.cat((tensor, tensor, tensor), 1)
if normalize is True:
tensor = tensor.clone() # avoid modifying tensor in-place
if range is not None:
assert isinstance(range, tuple), \
"range has to be a tuple (min, max) if specified. min and max are numbers"
def norm_ip(img, min, max):
img.clamp_(min=min, max=max)
img.add_(-min).div_(max - min + 1e-5)
def norm_range(t, range):
if range is not None:
norm_ip(t, range[0], range[1])
else:
norm_ip(t, float(t.min()), float(t.max()))
if scale_each is True:
for t in tensor: # loop over mini-batch dimension
norm_range(t, range)
else:
norm_range(tensor, range)
if tensor.size(0) == 1:
return tensor.squeeze(0)
# make the mini-batch of images into a grid
nmaps = tensor.size(0)
xmaps = min(nrow, nmaps)
ymaps = int(math.ceil(float(nmaps) / xmaps))
height, width = int(tensor.size(2) +
padding), int(tensor.size(3) + padding)
num_channels = tensor.size(1)
# grid = tensor.new_full((num_channels, height * ymaps + padding, width * xmaps + padding), pad_value)
grid = np.zeros((num_channels, height * ymaps + padding,
width * xmaps + padding)) + pad_value
k = 0
for y in irange(ymaps):
for x in irange(xmaps):
if k >= nmaps:
break
# sub_grid=grid[:, (y * height + padding):(y * height + padding+height - padding) ][:,:,(x * width + padding):(x * width + padding+width - padding)]
# torch.copy(tensor[k],sub_grid)
grid[:, (y * height + padding):(y * height + padding + height -
padding),
(x * width + padding):(x * width + padding + width -
padding)] = tensor[k].numpy()
# torch.copy(tensor[k],torch.narrow(torch.narrow(grid,1, y * height + padding, height - padding)\
# ,2, x * width + padding, width - padding) )
k = k + 1
return torch.Tensor(grid)
def shortcut(self, x):
if self.downsample:
x = self.downsample(x)
if self.learnable_sc:
x = torch.cat([x, self.conv_sc(x)], 1)
return x
def forward(self, g, return_all_outputs=False):
"""Predict molecule labels
Parameters
----------
g : DGLGraph
Input DGLGraph for molecule(s)
n_feat : tensor of dtype float32 and shape (B1, D1)
Node features. B1 for number of nodes and D1 for
the node feature size.
e_feat : tensor of dtype float32 and shape (B2, D2)
Edge features. B2 for number of edges and D2 for
the edge feature size.
Returns
-------
res : Predicted labels
"""
# nfreq = g.ndata["nfreq"]
if self.degree_input:
device = g.ndata["seed"].device
degrees = g.in_degrees()
if device != torch.device("cpu"):
degrees = degrees
n_feat = torch.cat(
(
g.ndata["pos_undirected"],
self.degree_embedding(torch.clamp(degrees,0,self.max_degree)),
g.ndata["seed"].unsqueeze(1).float(),
),
dim=-1,
)
else:
n_feat = torch.cat(
(
g.ndata["pos_undirected"],
# g.ndata["pos_directed"],
# self.node_freq_embedding(nfreq.clamp(0, self.max_node_freq)),
# self.degree_embedding(degrees.clamp(0, self.max_degree)),
g.ndata["seed"].unsqueeze(1).float(),
# nfreq.unsqueeze(1).float() / self.max_node_freq,
# degrees.unsqueeze(1).float() / self.max_degree,
),
dim=-1,
)
# efreq = g.edata["efreq"]
# e_feat = torch.cat(
# (
# self.edge_freq_embedding(efreq.clamp(0, self.max_edge_freq)),
# efreq.unsqueeze(1).float() / self.max_edge_freq,
# ),
# dim=-1,
# )
e_feat = None
if self.gnn_model == "gin":
x, all_outputs = self.gnn(g, n_feat, e_feat)
else:
x, all_outputs = self.gnn(g, n_feat, e_feat), None
x = self.set2set(g, x)
x = self.lin_readout(x)
if self.norm:
x = F.normalize(x, p=2, dim=-1, eps=1e-5)
if return_all_outputs:
return x, all_outputs
else:
return x