def __init__(self, depth=7, latent_size=512, use_eql=True):
"""
constructor for the Generator class
:param depth: required depth of the Network
:param latent_size: size of the latent manifold
:param use_eql: whether to use equalized learning rate
"""
super().__init__()
assert latent_size != 0 and ((latent_size & (latent_size - 1))
== 0), "latent size not a power of 2"
if depth >= 4:
assert latent_size >= np.power(
2, depth - 4), "latent size will diminish to zero"
# state of the generator:
self.use_eql = use_eql
self.depth = depth
self.latent_size = latent_size
self.fc = nn.Sequential(
nn.Linear(512, 512),
nn.BatchNorm1d(512),
nn.ReLU(),
)
# register the modules required for the GAN
self.initial_block = GenInitialBlock(self.latent_size,
use_eql=self.use_eql)
# create a module list of the other required general convolution blocks
self.layers = ModuleList([]) # initialize to empty list
# create the ToRGB layers for various outputs:
if self.use_eql:
self.toRGB = lambda in_channels: _equalized_conv2d(
in_channels, 3, (1, 1), bias=True)
else:
self.toRGB = lambda in_channels: Conv2d(
in_channels, 3, (1, 1), bias=True)
self.rgb_converters = ModuleList([self.toRGB(self.latent_size)])
# create the remaining layers
for i in range(self.depth - 1):
if i <= 2:
layer = GenGeneralConvBlock(self.latent_size,
self.latent_size,
use_eql=self.use_eql)
rgb = self.toRGB(self.latent_size)
else:
layer = GenGeneralConvBlock(
int(self.latent_size // np.power(2, i - 3)),
int(self.latent_size // np.power(2, i - 2)),
use_eql=self.use_eql)
rgb = self.toRGB(int(self.latent_size // np.power(2, i - 2)))
self.layers.append(layer)
self.rgb_converters.append(rgb)
# register the temporary upsampler
self.temporaryUpsampler = lambda x: interpolate(x, scale_factor=2)
def __init__(self, height=7, feature_size=512, use_eql=True):
"""
constructor for the class
:param height: total height of the discriminator (Must be equal to the Generator depth)
:param feature_size: size of the deepest features extracted (Must be equal to Generator latent_size)
:param use_eql: whether to use equalized learning rate
"""
super().__init__()
assert feature_size != 0 and ((feature_size & (feature_size - 1)) == 0), \
"latent size not a power of 2"
if height >= 4:
assert feature_size >= np.power(
2, height - 4), "feature size cannot be produced"
# create state of the object
self.use_eql = use_eql
self.height = height
self.feature_size = feature_size
self.final_block = DisFinalBlock(self.feature_size,
use_eql=self.use_eql)
# create a module list of the other required general convolution blocks
self.layers = ModuleList([]) # initialize to empty list
# create the fromRGB layers for various inputs:
if self.use_eql:
from pro_gan_pytorch.CustomLayers import _equalized_conv2d
self.fromRGB = lambda out_channels: _equalized_conv2d(
3, out_channels, (1, 1), bias=True)
else:
from torch.nn import Conv2d
self.fromRGB = lambda out_channels: Conv2d(
3, out_channels, (1, 1), bias=True)
self.rgb_to_features = ModuleList([self.fromRGB(self.feature_size)])
# create the remaining layers
for i in range(self.height - 1):
if i > 2:
layer = DisGeneralConvBlock(
int(self.feature_size // np.power(2, i - 2)),
int(self.feature_size // np.power(2, i - 3)),
use_eql=self.use_eql)
rgb = self.fromRGB(int(self.feature_size //
np.power(2, i - 2)))
else:
layer = DisGeneralConvBlock(self.feature_size,
self.feature_size,
use_eql=self.use_eql)
rgb = self.fromRGB(self.feature_size)
self.layers.append(layer)
self.rgb_to_features.append(rgb)
# register the temporary downSampler
self.temporaryDownsampler = AvgPool2d(2)
def from_rgb(out_channels):
return _equalized_conv2d(1, out_channels, (1, 1), bias=True)
def to_rgb(in_channels):
return _equalized_conv2d(in_channels, 1, (1, 1), bias=True)