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interactive_demo.py
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interactive_demo.py
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# Copyright 2019-2020 Stanislav Pidhorskyi
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
import torch.utils.data
from net import *
from model import Model
from launcher import run
from checkpointer import Checkpointer
from dlutils.pytorch import count_parameters
from defaults import get_cfg_defaults
import lreq
from PIL import Image
import bimpy
lreq.use_implicit_lreq.set(True)
indices = [0, 1, 2, 3, 4, 10, 11, 17, 19]
labels = ["gender",
"smile",
"attractive",
"wavy-hair",
"young",
"big lips",
"big nose",
"chubby",
"glasses",
]
def sample(cfg, logger):
torch.cuda.set_device(0)
model = Model(
startf=cfg.MODEL.START_CHANNEL_COUNT,
layer_count=cfg.MODEL.LAYER_COUNT,
maxf=cfg.MODEL.MAX_CHANNEL_COUNT,
latent_size=cfg.MODEL.LATENT_SPACE_SIZE,
truncation_psi=cfg.MODEL.TRUNCATIOM_PSI,
truncation_cutoff=cfg.MODEL.TRUNCATIOM_CUTOFF,
mapping_layers=cfg.MODEL.MAPPING_LAYERS,
channels=cfg.MODEL.CHANNELS,
generator=cfg.MODEL.GENERATOR,
encoder=cfg.MODEL.ENCODER)
model.cuda(0)
model.eval()
model.requires_grad_(False)
decoder = model.decoder
encoder = model.encoder
mapping_tl = model.mapping_d
mapping_fl = model.mapping_f
dlatent_avg = model.dlatent_avg
logger.info("Trainable parameters generator:")
count_parameters(decoder)
logger.info("Trainable parameters discriminator:")
count_parameters(encoder)
arguments = dict()
arguments["iteration"] = 0
model_dict = {
'discriminator_s': encoder,
'generator_s': decoder,
'mapping_tl_s': mapping_tl,
'mapping_fl_s': mapping_fl,
'dlatent_avg': dlatent_avg
}
checkpointer = Checkpointer(cfg,
model_dict,
{},
logger=logger,
save=False)
extra_checkpoint_data = checkpointer.load()
model.eval()
layer_count = cfg.MODEL.LAYER_COUNT
def encode(x):
Z, _ = model.encode(x, layer_count - 1, 1)
Z = Z.repeat(1, model.mapping_f.num_layers, 1)
return Z
def decode(x):
layer_idx = torch.arange(2 * layer_count)[np.newaxis, :, np.newaxis]
ones = torch.ones(layer_idx.shape, dtype=torch.float32)
coefs = torch.where(layer_idx < model.truncation_cutoff, ones, ones)
# x = torch.lerp(model.dlatent_avg.buff.data, x, coefs)
return model.decoder(x, layer_count - 1, 1, noise=True)
path = 'dataset_samples/faces/realign1024x1024'
paths = list(os.listdir(path))
paths.sort()
paths_backup = paths[:]
randomize = bimpy.Bool(True)
current_file = bimpy.String("")
ctx = bimpy.Context()
attribute_values = [bimpy.Float(0) for i in indices]
W = [torch.tensor(np.load("principal_directions/direction_%d.npy" % i), dtype=torch.float32) for i in indices]
rnd = np.random.RandomState(5)
def loadNext():
img = np.asarray(Image.open(path + '/' + paths[0]))
current_file.value = paths[0]
paths.pop(0)
if len(paths) == 0:
paths.extend(paths_backup)
if img.shape[2] == 4:
img = img[:, :, :3]
im = img.transpose((2, 0, 1))
x = torch.tensor(np.asarray(im, dtype=np.float32), device='cpu', requires_grad=True).cuda() / 127.5 - 1.
if x.shape[0] == 4:
x = x[:3]
needed_resolution = model.decoder.layer_to_resolution[-1]
while x.shape[2] > needed_resolution:
x = F.avg_pool2d(x, 2, 2)
if x.shape[2] != needed_resolution:
x = F.adaptive_avg_pool2d(x, (needed_resolution, needed_resolution))
img_src = ((x * 0.5 + 0.5) * 255).type(torch.long).clamp(0, 255).cpu().type(torch.uint8).transpose(0, 2).transpose(0, 1).numpy()
latents_original = encode(x[None, ...].cuda())
latents = latents_original[0, 0].clone()
latents -= model.dlatent_avg.buff.data[0]
for v, w in zip(attribute_values, W):
v.value = (latents * w).sum()
for v, w in zip(attribute_values, W):
latents = latents - v.value * w
return latents, latents_original, img_src
def loadRandom():
latents = rnd.randn(1, cfg.MODEL.LATENT_SPACE_SIZE)
lat = torch.tensor(latents).float().cuda()
dlat = mapping_fl(lat)
layer_idx = torch.arange(2 * layer_count)[np.newaxis, :, np.newaxis]
ones = torch.ones(layer_idx.shape, dtype=torch.float32)
coefs = torch.where(layer_idx < model.truncation_cutoff, ones, ones)
dlat = torch.lerp(model.dlatent_avg.buff.data, dlat, coefs)
x = decode(dlat)[0]
img_src = ((x * 0.5 + 0.5) * 255).type(torch.long).clamp(0, 255).cpu().type(torch.uint8).transpose(0, 2).transpose(0, 1).numpy()
latents_original = dlat
latents = latents_original[0, 0].clone()
latents -= model.dlatent_avg.buff.data[0]
for v, w in zip(attribute_values, W):
v.value = (latents * w).sum()
for v, w in zip(attribute_values, W):
latents = latents - v.value * w
return latents, latents_original, img_src
latents, latents_original, img_src = loadNext()
ctx.init(1800, 1600, "Styles")
def update_image(w, latents_original):
with torch.no_grad():
w = w + model.dlatent_avg.buff.data[0]
w = w[None, None, ...].repeat(1, model.mapping_f.num_layers, 1)
layer_idx = torch.arange(model.mapping_f.num_layers)[np.newaxis, :, np.newaxis]
cur_layers = (7 + 1) * 2
mixing_cutoff = cur_layers
styles = torch.where(layer_idx < mixing_cutoff, w, latents_original)
x_rec = decode(styles)
resultsample = ((x_rec * 0.5 + 0.5) * 255).type(torch.long).clamp(0, 255)
resultsample = resultsample.cpu()[0, :, :, :]
return resultsample.type(torch.uint8).transpose(0, 2).transpose(0, 1)
im_size = 2 ** (cfg.MODEL.LAYER_COUNT + 1)
im = update_image(latents, latents_original)
print(im.shape)
im = bimpy.Image(im)
display_original = True
seed = 0
while not ctx.should_close():
with ctx:
new_latents = latents + sum([v.value * w for v, w in zip(attribute_values, W)])
if display_original:
im = bimpy.Image(img_src)
else:
im = bimpy.Image(update_image(new_latents, latents_original))
bimpy.begin("Principal directions")
bimpy.columns(2)
bimpy.set_column_width(0, im_size + 20)
bimpy.image(im)
bimpy.next_column()
for v, label in zip(attribute_values, labels):
bimpy.slider_float(label, v, -40.0, 40.0)
bimpy.checkbox("Randomize noise", randomize)
if randomize.value:
seed += 1
torch.manual_seed(seed)
if bimpy.button('Next'):
latents, latents_original, img_src = loadNext()
display_original = True
if bimpy.button('Display Reconstruction'):
display_original = False
if bimpy.button('Generate random'):
latents, latents_original, img_src = loadRandom()
display_original = False
if bimpy.input_text("Current file", current_file, 64) and os.path.exists(path + '/' + current_file.value):
paths.insert(0, current_file.value)
latents, latents_original, img_src = loadNext()
bimpy.end()
if __name__ == "__main__":
gpu_count = 1
run(sample, get_cfg_defaults(), description='ALAE-interactive', default_config='configs/ffhq.yaml',
world_size=gpu_count, write_log=False)