def build_generator_32(noise=None, ngf=128):
# noise input
InputNoise = InputLayer(shape=(None, 100), input_var=noise)
#FC Layer
gnet0 = DenseLayer(InputNoise,
ngf * 4 * 4 * 4,
W=Normal(0.02),
nonlinearity=relu)
print("Gen fc1:", gnet0.output_shape)
#Reshape Layer
gnet1 = ReshapeLayer(gnet0, ([0], ngf * 4, 4, 4))
print("Gen rs1:", gnet1.output_shape)
# DeConv Layer
gnet2 = Deconv2DLayer(gnet1,
ngf * 2, (4, 4), (2, 2),
crop=1,
W=Normal(0.02),
nonlinearity=relu)
print("Gen deconv1:", gnet2.output_shape)
# DeConv Layer
gnet3 = Deconv2DLayer(gnet2,
ngf, (4, 4), (2, 2),
crop=1,
W=Normal(0.02),
nonlinearity=relu)
print("Gen deconv2:", gnet3.output_shape)
# DeConv Layer
gnet4 = Deconv2DLayer(gnet3,
3, (4, 4), (2, 2),
crop=1,
W=Normal(0.02),
nonlinearity=tanh)
print("Gen output:", gnet4.output_shape)
return gnet4
def build_decoder_28(self, in_layer):
lrelu = LeakyRectify(0.2)
# fully-connected layer
layer = batch_norm(DenseLayer(
in_layer, 1024, nonlinearity=lrelu)) # original with relu
# project and reshape
layer = batch_norm(DenseLayer(
layer, 256 * 7 * 7, nonlinearity=lrelu)) # original with relu
layer = ReshapeLayer(layer, ([0], 256, 7, 7))
# two fractional-stride convolutions
layer = batch_norm(
Deconv2DLayer(layer,
128,
5,
stride=2,
crop='same',
output_size=14,
nonlinearity=lrelu)) # original with relu
return Deconv2DLayer(layer,
self.channels,
5,
stride=2,
crop='same',
output_size=28,
nonlinearity=None)
def build_generator(input_var=None):
from lasagne.layers import InputLayer, ReshapeLayer, DenseLayer
try:
from lasagne.layers import TransposedConv2DLayer as Deconv2DLayer
except ImportError:
raise ImportError("Your Lasagne is too old. Try the bleeding-edge "
"version: http://lasagne.readthedocs.io/en/latest/"
"user/installation.html#bleeding-edge-version")
try:
from lasagne.layers.dnn import batch_norm_dnn as batch_norm
except ImportError:
from lasagne.layers import batch_norm
from lasagne.nonlinearities import sigmoid
# input: 100dim
layer = InputLayer(shape=(None, 100), input_var=input_var)
# fully-connected layer
layer = batch_norm(DenseLayer(layer, 1024))
# project and reshape
layer = batch_norm(DenseLayer(layer, 128*7*7))
layer = ReshapeLayer(layer, ([0], 128, 7, 7))
# two fractional-stride convolutions
layer = batch_norm(Deconv2DLayer(layer, 64, 5, stride=2, crop='same',
output_size=14))
layer = Deconv2DLayer(layer, 1, 5, stride=2, crop='same', output_size=28,
nonlinearity=sigmoid)
print ("Generator output:", layer.output_shape)
return layer
def build_generator(input_var=None, do_batch_norm=False, activation='sigmoid'):
from lasagne.layers import InputLayer, ReshapeLayer, DenseLayer
from lasagne.layers import TransposedConv2DLayer as Deconv2DLayer
# define non-linearity at last layer
if activation == 'sigmoid':
from lasagne.nonlinearities import sigmoid as activation_fn
elif activation == 'scaled_tanh':
from lasagne.nonlinearities import ScaledTanH
activation_fn = ScaledTanH(2 / 3., 1.7519)
elif activation == 'linear':
from lasagne.nonlinearities import linear as activation_fn
else:
raise Exception("{} non-linearity not supported".format(activation))
# input: 100dim
layer = InputLayer(shape=(None, 100), input_var=input_var)
# fully-connected layer
layer = BatchNorm(DenseLayer(layer, 1024), do_batch_norm)
# project and reshape
layer = BatchNorm(DenseLayer(layer, 128 * 7 * 7), do_batch_norm)
layer = ReshapeLayer(layer, ([0], 128, 7, 7))
# two fractional-stride convolutions
layer = BatchNorm(
Deconv2DLayer(layer, 64, 5, stride=2, crop='same', output_size=14),
do_batch_norm)
layer = Deconv2DLayer(layer,
1,
5,
stride=2,
crop='same',
output_size=28,
nonlinearity=activation_fn)
print("Generator output:", layer.output_shape)
return layer
def UNet_decoder_2(LR_conv1, LR_conv2, LR_conv3, LR_conv4, warp_conv1, warp_conv2, warp_conv3, warp_conv4, activation = SELU_activation, W_init = W_init_SELU):
# 80
warp_deconv4 = Deconv2DLayer(ConcatLayer([LR_conv4, warp_conv4]), num_filters=64, filter_size=4, stride=2, crop=1, W = W_init, b=Constant(0.), nonlinearity=activation)
# 160
warp_deconv3 = Deconv2DLayer(ConcatLayer([warp_deconv4, LR_conv3, warp_conv3]), num_filters=64, filter_size=4, stride=2, crop=1, W = W_init, b=Constant(0.), nonlinearity=activation)
# 320
warp_deconv2 = Deconv2DLayer(ConcatLayer([warp_deconv3, LR_conv2, warp_conv2]), num_filters=64, filter_size=4, stride=2, crop=1, W = W_init, b=Constant(0.), nonlinearity=activation)
# final
post_fusion1 = Conv2DLayer(ConcatLayer([warp_deconv2, LR_conv1, warp_conv1]), 64, 5, pad=2, W = W_init, b=Constant(0.), nonlinearity=activation)
post_fusion2 = Conv2DLayer(post_fusion1, 64, 5, pad=2, W = W_init, b=Constant(0.), nonlinearity=activation)
final = Conv2DLayer(post_fusion1, 3, 5, pad=2, W = W_init_linear, b=Constant(0.), nonlinearity=linear)
return final
def build_net(nz=10):
# nz = size of latent code
#N.B. using batch_norm applies bn before non-linearity!
F = 32
enc = InputLayer(shape=(None, 1, 28, 28))
enc = Conv2DLayer(incoming=enc,
num_filters=F * 2,
filter_size=5,
stride=2,
nonlinearity=lrelu(0.2),
pad=2)
enc = Conv2DLayer(incoming=enc,
num_filters=F * 4,
filter_size=5,
stride=2,
nonlinearity=lrelu(0.2),
pad=2)
enc = Conv2DLayer(incoming=enc,
num_filters=F * 4,
filter_size=5,
stride=1,
nonlinearity=lrelu(0.2),
pad=2)
enc = reshape(incoming=enc, shape=(-1, F * 4 * 7 * 7))
enc = DenseLayer(incoming=enc, num_units=nz, nonlinearity=sigmoid)
#Generator networks
dec = InputLayer(shape=(None, nz))
dec = DenseLayer(incoming=dec, num_units=F * 4 * 7 * 7)
dec = reshape(incoming=dec, shape=(-1, F * 4, 7, 7))
dec = Deconv2DLayer(incoming=dec,
num_filters=F * 4,
filter_size=4,
stride=2,
nonlinearity=relu,
crop=1)
dec = Deconv2DLayer(incoming=dec,
num_filters=F * 4,
filter_size=4,
stride=2,
nonlinearity=relu,
crop=1)
dec = Deconv2DLayer(incoming=dec,
num_filters=1,
filter_size=3,
stride=1,
nonlinearity=sigmoid,
crop=1)
return enc, dec
def leaky_deconv(input_layer, **kwargs):
return Deconv2DLayer(input_layer,
nonlinearity=leaky_rectify,
filter_size=4,
stride=2,
crop=1,
b=None,
flip_filters=True,
**kwargs)
def upsample(input_layer, **kwargs):
return Deconv2DLayer(input_layer,
num_filters=2,
filter_size=4,
stride=2,
crop=1,
b=None,
nonlinearity=linear,
flip_filters=True,
**kwargs)
def create_model(incoming, options):
input_p = 0.2
hidden_p = 0.5
conv_num_filters1 = int(100 / (1.0 - input_p))
conv_num_filters2 = int(150 / (1.0 - hidden_p))
conv_num_filters3 = int(200 / (1.0 - hidden_p))
filter_size1 = 5
filter_size2 = 5
filter_size3 = 3
pool_size = 2
encode_size = int(options['BOTTLENECK'] / 0.5)
dense_mid_size = int(options['DENSE'] / 0.5)
pad_in = 'valid'
pad_out = 'full'
scaled_tanh = create_scaled_tanh()
dropout0 = DropoutLayer(incoming, p=0.2, name='dropout0')
conv2d1 = Conv2DLayer(dropout0, num_filters=conv_num_filters1, filter_size=filter_size1, pad=pad_in, name='conv2d1', nonlinearity=scaled_tanh)
maxpool2d2 = MaxPool2DLayer(conv2d1, pool_size=pool_size, name='maxpool2d2')
dropout1 = DropoutLayer(maxpool2d2, name='dropout1')
conv2d3 = Conv2DLayer(dropout1, num_filters=conv_num_filters2, filter_size=filter_size2, pad=pad_in, name='conv2d3', nonlinearity=scaled_tanh)
maxpool2d4 = MaxPool2DLayer(conv2d3, pool_size=pool_size, name='maxpool2d4', pad=(1,0))
dropout2 = DropoutLayer(maxpool2d4, name='dropout2')
conv2d5 = Conv2DLayer(dropout2, num_filters=conv_num_filters3, filter_size=filter_size3, pad=pad_in, name='conv2d5', nonlinearity=scaled_tanh)
reshape6 = ReshapeLayer(conv2d5, shape=([0], -1), name='reshape6') # 3000
reshape6_output = reshape6.output_shape[1]
dropout3 = DropoutLayer(reshape6, name='dropout3')
dense7 = DenseLayer(dropout3, num_units=dense_mid_size, name='dense7', nonlinearity=scaled_tanh)
dropout4 = DropoutLayer(dense7, name='dropout4')
bottleneck = DenseLayer(dropout4, num_units=encode_size, name='bottleneck', nonlinearity=linear)
# print_network(bottleneck)
dense8 = DenseLayer(bottleneck, num_units=dense_mid_size, W=bottleneck.W.T, name='dense8', nonlinearity=linear)
dense9 = DenseLayer(dense8, num_units=reshape6_output, W=dense7.W.T, nonlinearity=scaled_tanh, name='dense9')
reshape10 = ReshapeLayer(dense9, shape=([0], conv_num_filters3, 3, 5), name='reshape10') # 32 x 4 x 7
deconv2d11 = Deconv2DLayer(reshape10, conv2d5.input_shape[1], conv2d5.filter_size, stride=conv2d5.stride,
W=conv2d5.W, flip_filters=not conv2d5.flip_filters, name='deconv2d11', nonlinearity=scaled_tanh)
upscale2d12 = Upscale2DLayer(deconv2d11, scale_factor=pool_size, name='upscale2d12')
deconv2d13 = Deconv2DLayer(upscale2d12, conv2d3.input_shape[1], conv2d3.filter_size, stride=conv2d3.stride,
W=conv2d3.W, flip_filters=not conv2d3.flip_filters, name='deconv2d13', nonlinearity=scaled_tanh)
upscale2d14 = Upscale2DLayer(deconv2d13, scale_factor=pool_size, name='upscale2d14')
deconv2d15 = Deconv2DLayer(upscale2d14, conv2d1.input_shape[1], conv2d1.filter_size, stride=conv2d1.stride,
crop=(1, 0), W=conv2d1.W, flip_filters=not conv2d1.flip_filters, name='deconv2d14', nonlinearity=scaled_tanh)
reshape16 = ReshapeLayer(deconv2d15, ([0], -1), name='reshape16')
return reshape16, bottleneck
def create_model(incoming, options):
conv_num_filters1 = 100
conv_num_filters2 = 150
conv_num_filters3 = 200
filter_size1 = 5
filter_size2 = 5
filter_size3 = 3
pool_size = 2
encode_size = options['BOTTLENECK']
dense_mid_size = options['DENSE']
pad_in = 'valid'
pad_out = 'full'
scaled_tanh = create_scaled_tanh()
conv2d1 = Conv2DLayer(incoming, num_filters=conv_num_filters1, filter_size=filter_size1, pad=pad_in, name='conv2d1', nonlinearity=scaled_tanh)
maxpool2d3 = MaxPool2DLayer(conv2d1, pool_size=pool_size, name='maxpool2d3')
bn2 = BatchNormLayer(maxpool2d3, name='batchnorm2')
conv2d4 = Conv2DLayer(bn2, num_filters=conv_num_filters2, filter_size=filter_size2, pad=pad_in, name='conv2d4', nonlinearity=scaled_tanh)
maxpool2d6 = MaxPool2DLayer(conv2d4, pool_size=pool_size, name='maxpool2d6', pad=(1,0))
bn3 = BatchNormLayer(maxpool2d6, name='batchnorm3')
conv2d7 = Conv2DLayer(bn3, num_filters=conv_num_filters3, filter_size=filter_size3, pad=pad_in, name='conv2d7', nonlinearity=scaled_tanh)
reshape9 = ReshapeLayer(conv2d7, shape=([0], -1), name='reshape9') # 3000
reshape9_output = reshape9.output_shape[1]
bn8 = BatchNormLayer(reshape9, name='batchnorm8')
dense10 = DenseLayer(bn8, num_units=dense_mid_size, name='dense10', nonlinearity=scaled_tanh)
bn11 = BatchNormLayer(dense10, name='batchnorm11')
bottleneck = DenseLayer(bn11, num_units=encode_size, name='bottleneck', nonlinearity=linear)
# print_network(bottleneck)
dense12 = DenseLayer(bottleneck, num_units=dense_mid_size, W=bottleneck.W.T, name='dense12', nonlinearity=linear)
dense13 = DenseLayer(dense12, num_units=reshape9_output, W=dense10.W.T, nonlinearity=scaled_tanh, name='dense13')
reshape14 = ReshapeLayer(dense13, shape=([0], conv_num_filters3, 3, 5), name='reshape14') # 32 x 4 x 7
deconv2d19 = Deconv2DLayer(reshape14, conv2d7.input_shape[1], conv2d7.filter_size, stride=conv2d7.stride,
W=conv2d7.W, flip_filters=not conv2d7.flip_filters, name='deconv2d19', nonlinearity=scaled_tanh)
upscale2d16 = Upscale2DLayer(deconv2d19, scale_factor=pool_size, name='upscale2d16')
deconv2d17 = Deconv2DLayer(upscale2d16, conv2d4.input_shape[1], conv2d4.filter_size, stride=conv2d4.stride,
W=conv2d4.W, flip_filters=not conv2d4.flip_filters, name='deconv2d17', nonlinearity=scaled_tanh)
upscale2d18 = Upscale2DLayer(deconv2d17, scale_factor=pool_size, name='upscale2d18')
deconv2d19 = Deconv2DLayer(upscale2d18, conv2d1.input_shape[1], conv2d1.filter_size, stride=conv2d1.stride,
crop=(1, 0), W=conv2d1.W, flip_filters=not conv2d1.flip_filters, name='deconv2d14', nonlinearity=scaled_tanh)
reshape20 = ReshapeLayer(deconv2d19, ([0], -1), name='reshape20')
return reshape20, bottleneck
def upsample(input_layer, deconv = 'default', **kwargs):
stride = 2
if deconv == 'default':
return Deconv2DLayer(
input_layer, num_filters=2, filter_size=4, stride=2,
crop=1, W = W_init(gain=1.0), b=Constant(0.), nonlinearity=linear, flip_filters=False, **kwargs) # flip_filters=True(original) False(mine)
elif deconv == 'subpixel':
deconv_layer = Conv2DLayer(input_layer,
num_filters=2*stride*stride, filter_size=3,
pad = 1, nonlinearity = linear,
W = W_init(gain=1.0), b=Constant(0.), name = 'flow_subpixel_conv')
return SubpixelReshuffleLayer(deconv_layer, 2, stride, name = 'flow_subpixel_shuffle')
def leaky_deconv(input_layer, num_filters=64, activation = None, init = W_init_linear, deconv = 'default', **kwargs):
stride = 2
if deconv == 'default':
return Deconv2DLayer(
input_layer, num_filters = num_filters, nonlinearity = activation,
filter_size=4, stride=2, crop=1, W = init, b=Constant(0.), flip_filters=False, **kwargs) # flip_filters=True(original) False(mine)
elif deconv == 'subpixel':
deconv_layer = Conv2DLayer(input_layer,
num_filters=num_filters*stride*stride, filter_size=3,
pad = 1, nonlinearity = activation,
W = init, b=Constant(0.), name = 'subpixel_conv')
return SubpixelReshuffleLayer(deconv_layer, num_filters, stride, name = 'subpixel_shuffle')
def build_generator(inp):
net = InputLayer((None, 100), input_var=inp)
net = batch_norm(DenseLayer(net, 1024))
net = ReshapeLayer(DenseLayer(net, 4096), ([0], 1024, 2, 2))
print("Generator output:", net.output_shape)
# 2 * 2
net = batch_norm(Deconv2DLayer(net, 512, 4, stride=4))
print("Generator output:", net.output_shape)
# 8 * 8
net = batch_norm(Deconv2DLayer(net, 256, 4, stride=4))
print("Generator output:", net.output_shape)
# 32 * 32
net = batch_norm(Deconv2DLayer(net, 128, 4, stride=2, crop=1))
print("Generator output:", net.output_shape)
# 64 * 64
net = batch_norm(Deconv2DLayer(net, 64, 4, stride=2, crop=1))
print("Generator output:", net.output_shape)
# 128 * 128
net = Deconv2DLayer(net, 3, 4, stride=2, crop=1, nonlinearity=tanh)
print("Generator output:", net.output_shape)
# 3 * 256 * 256
return net
def build_decoder(hid_layer, nkwargs):
# the last shape before the fully connected layers
last_conv_shape = get_last_conv_shape(hid_layer)
#set kwargs
dc_kwargs = {k: nkwargs[k] for k in ['num_filters', 'W', 'nonlinearity']}
edc_kwargs = dict(num_filters=nkwargs['input_shape'][1],
W=nkwargs['W'],
nonlinearity=linear)
fc_kwargs = {k: nkwargs[k] for k in ['W', 'nonlinearity']}
fc_kwargs.update({'num_units': np.prod(last_conv_shape[1:])})
#make layers
net = DropoutLayer(hid_layer, p=nkwargs['p'])
net = DenseLayer(net, **fc_kwargs)
d1, d2, d3 = last_conv_shape[1:]
net = ReshapeLayer(net, shape=([0], d1, d2, d3))
net = Deconv2DLayer(net, filter_size=(2, 2), stride=(2, 2), **dc_kwargs)
net = Deconv2DLayer(net, filter_size=(2, 2), stride=(2, 2), **dc_kwargs)
net = Deconv2DLayer(net, filter_size=(2, 2), stride=(2, 2), **edc_kwargs)
return net
def UNet_decoder_3(LR_conv1, LR_conv2, LR_conv3, LR_conv4, warp_conv1, warp_conv2, warp_conv3, warp_conv4):
# 80
mask4 = Conv2DLayer(ConcatLayer([LR_conv4, warp_conv4]), 64, 5, pad=2, W = W_init_SELU, b=Constant(0.), nonlinearity=sigmoid)
warp_conv4_m = ElemwiseMergeLayer([warp_conv4, mask4], T.mul)
warp_deconv4 = Deconv2DLayer(ConcatLayer([LR_conv4, warp_conv4_m]), num_filters=64, filter_size=4, stride=2, crop=1, W = W_init_SELU, b=Constant(0.), nonlinearity=SELU_activation)
# 160
mask3 = Conv2DLayer(ConcatLayer([warp_deconv4, LR_conv3, warp_conv3]), 64, 5, pad=2, W = W_init_SELU, b=Constant(0.), nonlinearity=sigmoid)
warp_conv3_m = ElemwiseMergeLayer([warp_conv3, mask3], T.mul)
warp_deconv3 = Deconv2DLayer(ConcatLayer([warp_deconv4, LR_conv3, warp_conv3_m]), num_filters=64, filter_size=4, stride=2, crop=1, W = W_init_SELU, b=Constant(0.), nonlinearity=SELU_activation)
# 320
mask2 = Conv2DLayer(ConcatLayer([warp_deconv3, LR_conv2, warp_conv2]), 64, 5, pad=2, W = W_init_SELU, b=Constant(0.), nonlinearity=sigmoid)
warp_conv2_m = ElemwiseMergeLayer([warp_conv2, mask2], T.mul)
warp_deconv2 = Deconv2DLayer(ConcatLayer([warp_deconv3, LR_conv2, warp_conv2_m]), num_filters=64, filter_size=4, stride=2, crop=1, W = W_init_SELU, b=Constant(0.), nonlinearity=SELU_activation)
# final
mask1 = Conv2DLayer(ConcatLayer([warp_deconv2, LR_conv1, warp_conv1]), 64, 5, pad=2, W = W_init_SELU, b=Constant(0.), nonlinearity=sigmoid)
warp_conv1_m = ElemwiseMergeLayer([warp_conv1, mask1], T.mul)
post_fusion1 = Conv2DLayer(ConcatLayer([warp_deconv2, LR_conv1, warp_conv1_m]), 64, 5, pad=2, W = W_init_SELU, b=Constant(0.), nonlinearity=SELU_activation)
post_fusion2 = Conv2DLayer(post_fusion1, 64, 5, pad=2, W = W_init_SELU, b=Constant(0.), nonlinearity=SELU_activation)
final = Conv2DLayer(post_fusion1, 3, 5, pad=2, W = W_init_linear, b=Constant(0.), nonlinearity=linear)
test = Conv2DLayer(final, 3, 5, pad=2, W = W_init_linear, b=Constant(0.), nonlinearity=linear)
return final
def build_generator_128(noise=None, ngf=128):
lrelu = LeakyRectify(0.2)
# noise input
InputNoise = InputLayer(shape=(None, 100), input_var=noise)
#FC Layer
gnet0 = DenseLayer(InputNoise,
ngf * 16 * 4 * 4,
W=Normal(0.02),
nonlinearity=lrelu)
print("Gen fc1:", gnet0.output_shape)
#Reshape Layer
gnet1 = ReshapeLayer(gnet0, ([0], ngf * 16, 4, 4))
print("Gen rs1:", gnet1.output_shape)
# DeConv Layer
gnet2 = Deconv2DLayer(gnet1,
ngf * 8, (4, 4), (2, 2),
crop=1,
W=Normal(0.02),
nonlinearity=lrelu)
print("Gen deconv1:", gnet2.output_shape)
# DeConv Layer
gnet3 = Deconv2DLayer(gnet2,
ngf * 8, (4, 4), (2, 2),
crop=1,
W=Normal(0.02),
nonlinearity=lrelu)
print("Gen deconv2:", gnet3.output_shape)
# DeConv Layer
gnet4 = Deconv2DLayer(gnet3,
ngf * 4, (4, 4), (2, 2),
crop=1,
W=Normal(0.02),
nonlinearity=lrelu)
print("Gen deconv3:", gnet4.output_shape)
# DeConv Layer
gnet5 = Deconv2DLayer(gnet4,
ngf * 4, (4, 4), (2, 2),
crop=1,
W=Normal(0.02),
nonlinearity=lrelu)
print("Gen deconv4:", gnet5.output_shape)
# DeConv Layer
gnet6 = Deconv2DLayer(gnet5,
ngf * 2, (4, 4), (2, 2),
crop=1,
W=Normal(0.02),
nonlinearity=lrelu)
print("Gen deconv5:", gnet6.output_shape)
# DeConv Layer
gnet7 = Deconv2DLayer(gnet6,
3, (3, 3), (1, 1),
crop='same',
W=Normal(0.02),
nonlinearity=tanh)
print("Gen output:", gnet7.output_shape)
return gnet7
def upsample_bn(input_layer, name = '', num_filters = None, filter_size= None, stride=None, crop=None,
activation = 'relu', use_bn = True, W_init = 1, deconv_mode = None, **kwargs):
if (deconv_mode == ''):
deconv = Deconv2DLayer(input_layer, name = name+'_linear',nonlinearity=linear, num_filters=num_filters, filter_size=filter_size, stride=stride,
crop=crop, W = W_init, b=Constant(0.), flip_filters=False, **kwargs)
elif (deconv_mode == 'Subpixel'):
deconv = lasagne.layers.Conv2DLayer(input_layer,name=name+'_linear',
num_filters=num_filters*stride*stride, filter_size=3,
pad = (filter_size-1)/2, nonlinearity = linear,
W = W_init,b=Constant(0.))
deconv = lasagne.layers.SubpixelReshuffleLayer(deconv,num_filters,stride,name = name+'_linear_shuffle')
if use_bn:
bn = BatchNormLayer(deconv, name = name+'_bn')
out = NonlinearityLayer(bn, name = name+'_activation', nonlinearity = activation)
else:
out = NonlinearityLayer(deconv, name = name+'_activation', nonlinearity = activation)
return out
def TransitionUp(skip_connection, block_to_upsample, n_filters_keep):
"""
Performs upsampling on block_to_upsample by a factor 2 and concatenates it with the skip_connection """
# Upsample
l = ConcatLayer(block_to_upsample)
l = Deconv2DLayer(l,
n_filters_keep,
filter_size=3,
stride=2,
crop='valid',
W=HeUniform(gain='relu'),
nonlinearity=linear)
# Concatenate with skip connection
l = ConcatLayer([l, skip_connection],
cropping=[None, None, 'center', 'center'])
return l
def synthesiser(input_var=None, configs=None):
network = lasagne.layers.InputLayer(shape=(None, configs['GIN']),
input_var=input_var)
print('L0:' + str(lasagne.layers.get_output_shape(network)))
network = batch_norm(DenseLayer(incoming=network, num_units=1024))
print('L1:' + str(lasagne.layers.get_output_shape(network)))
network = lasagne.layers.ReshapeLayer(network, (-1, 1024))
# Project, reshape
network = batch_norm(DenseLayer(
incoming=network,
num_units=128 * 7 * 7,
))
print('L2:' + str(lasagne.layers.get_output_shape(network)))
network = lasagne.layers.ReshapeLayer(network, (-1, 128, 7, 7))
# Two fractional-stride convolutions
network = batch_norm(
Deconv2DLayer(incoming=network,
num_filters=64,
filter_size=(5, 5),
stride=2,
crop='same',
output_size=14))
print('L3:' + str(lasagne.layers.get_output_shape(network)))
network = lasagne.layers.Deconv2DLayer(
incoming=network,
num_filters=1,
filter_size=(5, 5),
stride=2,
crop='same',
output_size=(28, 28),
nonlinearity=lasagne.nonlinearities.sigmoid)
print('L4:' + str(lasagne.layers.get_output_shape(network)))
network = lasagne.layers.ReshapeLayer(
network, (-1, 1, configs['img_rows'], configs['img_cols']))
print('L5:' + str(lasagne.layers.get_output_shape(network)))
return network
def construct_unet_recursive(channels=1, no_f_base=8, f_size=3, branches=[2,2,2,2],dropout=0.2,bs=None,
class_nums=2, pad="same",nonlinearity=lasagne.nonlinearities.rectify, input_dim=[512,512]):
net= InputLayer((bs, channels, input_dim[0], input_dim[1]))
# Moving downwards the U-shape:
horizontal_pass=[]
for i in xrange(len(branches)):
net = conv_pool_down(net,no_f_base*2**(i),f_size,conv_depth=branches[i],
pad=pad,nonlinearity=nonlinearity,dropout=dropout)
horizontal_pass.append(net)
net = Pool2DLayer(net,pool_size=2)
# Bottleneck
net = Conv2DLayer(net,no_f_base*2**len(branches),f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net = Conv2DLayer(net,no_f_base*2**len(branches),f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net = Deconv2DLayer(net, no_f_base*2**(len(branches)-1), 2, 2)
# Moving upwards the U-shape:
for i in xrange(len(branches)):
net = PadLayer(net,1)
net = ConcatLayer([net,horizontal_pass[-(i+1)]],cropping=(None,None,"center","center"))
if i==len(branches)-1:
net = conv_pool_up(net,no_f_base*2**(len(branches)-1-i),f_size,
pad=pad,nonlinearity=nonlinearity,conv_depth=branches[i],halt=True)
else:
net = conv_pool_up(net,no_f_base*2**(len(branches)-1-i),f_size,
pad=pad,nonlinearity=nonlinearity,conv_depth=branches[i],halt=False)
# Class layer: Work around standard softmax bc. it doesn't work with tensor4/3.
# Hence, we reshape and feed it to an external Nonlinearity layer.
# net["class_ns"] is the output in image-related shape.
imageout = net = Conv2DLayer(net, class_nums, 1, nonlinearity=linear,W=lasagne.init.HeNormal(gain='relu'))
net = DimshuffleLayer(net, (1, 0, 2, 3))
net = ReshapeLayer(net, (class_nums, -1))
net = DimshuffleLayer(net, (1, 0))
# Flattened output to be able to feed it to lasagne.objectives.categorical_crossentropy.
net = NonlinearityLayer(net, nonlinearity=lasagne.nonlinearities.softmax)
return net,imageout
del net, imageout
def conv_pool_up(net, no_f_base,f_size,conv_depth,pad,nonlinearity,halt=False):
for i in xrange(conv_depth):
net = Conv2DLayer(net,no_f_base,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
if not halt:
net = Deconv2DLayer(net,no_f_base/2,2,2)
return net
def construct_unet(channels=1, no_f_base=8, f_size=3, dropout=False, bs=None, class_nums=2, pad="same",nonlinearity=lasagne.nonlinearities.rectify, input_dim=[512,512]):
net={}
net["input"]= InputLayer(shape=(bs, channels, input_dim[0], input_dim[1]))
# Moving downwards the U-shape. Simplified:
net["conv_down11"] = Conv2DLayer(net["input"],no_f_base,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_down12"] = Conv2DLayer(net["conv_down11"],no_f_base,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["pool1"] = Pool2DLayer(net["conv_down12"],pool_size=2)
net["conv_down21"] = Conv2DLayer(net["pool1"],no_f_base*2,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_down22"] = Conv2DLayer(net["conv_down21"],no_f_base*2,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["pool2"] = Pool2DLayer(net["conv_down22"],pool_size=2)
net["conv_down31"] = Conv2DLayer(net["pool2"],no_f_base*4,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_down32"] = Conv2DLayer(net["conv_down31"],no_f_base*4,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["pool3"] = Pool2DLayer(net["conv_down32"],pool_size=2)
net["conv_down41"] = Conv2DLayer(net["pool3"],no_f_base*8,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_down42"] = Conv2DLayer(net["conv_down41"],no_f_base*8,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
to_drop1 = net["pool4"] = Pool2DLayer(net["conv_down42"],pool_size=2)
if dropout:
to_drop1 = DropoutLayer(to_drop1, p=0.5)
#vvvv bottom vvvv
net["conv_bottom1"] = Conv2DLayer(to_drop1,no_f_base*16,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_bottom2"] = Conv2DLayer(net["conv_bottom1"],no_f_base*16,f_size,pad=pad,nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["deconv_bottom1"] = Deconv2DLayer(net["conv_bottom2"], no_f_base*8, 2, 2)
#^^^^ bottom ^^^^
# Moving upwards the U-shape. Simplified:
net["concat1"] = concat([net["deconv_bottom1"], net["conv_down42"]], cropping=(None, None, "center", "center"))
net["conv_up11"]= Conv2DLayer(net["concat1"], no_f_base*8, f_size, pad=pad, nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_up11"]= Conv2DLayer(net["conv_up11"], no_f_base*8, f_size, pad=pad, nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["deconv_up1"] = Deconv2DLayer(net["conv_up11"], no_f_base*4, 2, 2)
net["concat2"] = concat([net["deconv_up1"], net["conv_down32"]], cropping=(None, None, "center", "center"))
net["conv_up21"]= Conv2DLayer(net["concat2"], no_f_base*4, f_size, pad=pad, nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_up22"]= Conv2DLayer(net["conv_up21"], no_f_base*4, f_size, pad=pad, nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["deconv_up2"] = Deconv2DLayer(net["conv_up22"], no_f_base*2, 2, 2)
net["concat3"] = concat([net["deconv_up2"], net["conv_down22"]], cropping=(None, None, "center", "center"))
net["conv_up31"]= Conv2DLayer(net["concat3"], no_f_base*2, f_size, pad=pad, nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_up32"]= Conv2DLayer(net["conv_up31"], no_f_base*2, f_size, pad=pad, nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["deconv_up3"] = Deconv2DLayer(net["conv_up32"], no_f_base, 2, 2)
net["concat4"] = concat([net["deconv_up3"], net["conv_down12"]], cropping=(None, None, "center", "center"))
net["conv_up41"]= Conv2DLayer(net["concat4"], no_f_base, f_size, pad=pad, nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
net["conv_up42"]= Conv2DLayer(net["conv_up41"], no_f_base, f_size, pad=pad, nonlinearity=nonlinearity,W=lasagne.init.HeNormal(gain='relu'))
# Class layer: Work around standard softmax bc. it doesn't work with tensor4/3.
# Hence, we reshape and feed it to an external Nonlinearity layer.
# net["class_ns"] is the output in image-related shape.
net["out"] = Conv2DLayer(net["conv_up42"], class_nums, 1, nonlinearity=None,W=lasagne.init.HeNormal(gain='relu'))
net["layer_shuffle_dim"] = DimshuffleLayer(net["out"], (1, 0, 2, 3))
net["reshape_layer"] = ReshapeLayer(net["layer_shuffle_dim"], (class_nums, -1))
net["layer_shuffle_dim2"] = DimshuffleLayer(net["reshape_layer"], (1, 0))
# Flattened output to be able to feed it to lasagne.objectives.categorical_crossentropy.
net["out_optim"] = NonlinearityLayer(net["layer_shuffle_dim2"], nonlinearity=lasagne.nonlinearities.softmax)
return net
net = None
def tiramisu_transistion_up(net, f_size_base, stride):
net = Deconv2DLayer(net, net.output_shape[1], f_size_base, stride)
return net
def TransitionUp(skip_connection, block_to_upsample, n_filters_keep):
l = ConcatLayer(block_to_upsample)
l = Deconv2DLayer(l, n_filters_keep, filter_size=3, stride=2,
crop='valid', W=HeUniform(gain='relu'), nonlinearity=linear)
l = ConcatLayer([l, skip_connection], cropping=[None, None, 'center', 'center'])
return l
3,
nonlinearity=nonlinearity,
pad=pad,
W=HeNormal(gain="relu")))
net['encode_2'] = batch_norm(
ConvLayer(net['encode_1'],
base_n_filters * 16,
3,
nonlinearity=nonlinearity,
pad=pad,
W=HeNormal(gain="relu")))
net['upscale1'] = batch_norm(
Deconv2DLayer(net['encode_2'],
base_n_filters * 16,
2,
2,
crop="valid",
nonlinearity=nonlinearity,
W=HeNormal(gain="relu")))
net['concat1'] = ConcatLayer([net['upscale1'], net['contr_4_2']],
cropping=(None, None, "center", "center"))
net['expand_1_1'] = batch_norm(
ConvLayer(net['concat1'],
base_n_filters * 8,
3,
nonlinearity=nonlinearity,
pad=pad,
W=HeNormal(gain="relu")))
net['expand_1_2'] = batch_norm(
ConvLayer(net['expand_1_1'],
def build_generator(input_var, noise_size, cond_var=None, n_conds=0, arch=0,
with_BatchNorm=True, batch_size=None, n_steps=None):
from lasagne.layers import InputLayer, ReshapeLayer, DenseLayer, concat
from lasagne.layers import Upscale2DLayer, Conv2DLayer
from lasagne.layers import TransposedConv2DLayer as Deconv2DLayer
from lasagne.nonlinearities import LeakyRectify, rectify
from lasagne.init import GlorotUniform, Normal, Orthogonal
# non_lin = LeakyRectify(0.01)
non_lin = rectify
# init = Orthogonal(np.sqrt(2/(1+0.01**2)))
init = Normal(0.02, 0.0)
# init = GlorotUniform()
layer = InputLayer(shape=(batch_size, noise_size), input_var=input_var)
if cond_var is not None:
layer = BatchNorm(DenseLayer(
layer, noise_size, nonlinearity=non_lin), with_BatchNorm)
layer = concat([
layer, InputLayer(shape=(batch_size, n_conds), input_var=cond_var)])
if arch == 'dcgan':
# DCGAN
layer = BatchNorm(DenseLayer(
layer, 1024*4*4, W=init, b=None, nonlinearity=non_lin))
layer = ReshapeLayer(layer, ([0], 1024, 4, 4))
layer = BatchNorm(Deconv2DLayer(
layer, 512, 5, stride=2, crop=(2, 2), W=init, b=None,
output_size=8, nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, 5, stride=2, crop=(2, 2), W=init, b=None,
output_size=16, nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 128, 5, stride=2, crop=(2, 2), W=init, b=None,
output_size=32, nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 64, 5, stride=2, crop=(2, 2), W=init, b=None,
output_size=64, nonlinearity=non_lin), with_BatchNorm)
layer = Deconv2DLayer(
layer, 1, 5, stride=2, crop=(2, 2), W=init, b=None,
output_size=128, nonlinearity=tanh_temperature)
elif arch == 'mnist':
# Jan Schluechter MNIST generator
# fully-connected layers
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
# project and reshape
layer = BatchNorm(DenseLayer(
layer, 1024*8*8, W=init, b=None), with_BatchNorm)
layer = ReshapeLayer(layer, ([0], 1024, 8, 8))
# fractional-stride convolutions
layer = BatchNorm(Deconv2DLayer(
layer, 512, 5, stride=2, crop='same', W=init, b=None,
output_size=16, nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, 5, stride=2, crop='same', W=init, b=None,
output_size=32, nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 128, 5, stride=2, crop='same', W=init, b=None,
output_size=64, nonlinearity=non_lin), with_BatchNorm)
layer = Deconv2DLayer(
layer, 1, 5, stride=2, crop='same', W=init, b=None,
output_size=128, nonlinearity=tanh_temperature)
elif 'cont-enc':
# build generator from concatenated prefix and noise features
layer = ReshapeLayer(layer, ([0], layer.output_shape[1], 1, 1))
layer = BatchNorm(Deconv2DLayer(
layer, 1024, 4, stride=1, crop=0, W=init), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 512, 4, stride=2, crop=1, W=init), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, 4, stride=2, crop=1, W=init), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 128, 4, stride=2, crop=1, W=init), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 128, 4, stride=2, crop=1, W=init), with_BatchNorm)
layer = Deconv2DLayer(
layer, 1, 4, stride=2, crop=1, W=init,
nonlinearity=tanh_temperature)
elif 'lsgan':
layer = batch_norm(DenseLayer(layer, 1024))
layer = batch_norm(DenseLayer(layer, 1024*8*8))
layer = ReshapeLayer(layer, ([0], 1024, 8, 8))
layer = batch_norm(Deconv2DLayer(
layer, 256, 5, stride=2, crop='same', output_size=16))
layer = batch_norm(Deconv2DLayer(
layer, 256, 5, stride=2, crop='same', output_size=32))
layer = batch_norm(Deconv2DLayer(
layer, 256, 5, stride=2, crop='same', output_size=64))
layer = Deconv2DLayer(
layer, 1, 5, stride=2, crop='same', output_size=128,
nonlinearity=tanh_temperature)
elif arch == 2:
# non-overlapping transposed convolutions
# fully-connected layers
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
# project and reshape
layer = BatchNorm(DenseLayer(layer, 256*36*36), with_BatchNorm)
layer = ReshapeLayer(layer, ([0], 256, 36, 36))
# two fractional-stride convolutions
layer = BatchNorm(Deconv2DLayer(
layer, 256, 4, stride=2, crop='full', b=None, nonlinearity=non_lin),
with_BatchNorm)
layer = Deconv2DLayer(
layer, 1, 8, stride=2, crop='full', b=None,
nonlinearity=tanh_temperature)
elif arch == 3:
# resize-convolution, more full layer weights less convolutions
# fully-connected layers
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
# project and reshape
layer = BatchNorm(DenseLayer(layer, 32*68*68), with_BatchNorm)
layer = ReshapeLayer(layer, ([0], 32, 68, 68))
# resize-convolutions
layer = BatchNorm(Conv2DLayer(
layer, 256, 3, stride=1, pad='valid'), with_BatchNorm)
layer = Upscale2DLayer(layer, (2, 2))
layer = Conv2DLayer(
layer, 1, 5, stride=1, pad='valid', nonlinearity=tanh_temperature)
elif arch == 4:
# resize-convolution, less full layer weights more convolutions
# fully-connected layers
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
# project and reshape
layer = BatchNorm(DenseLayer(layer, 128*18*18), with_BatchNorm)
layer = ReshapeLayer(layer, ([0], 128, 18, 18))
# resize-convolutions
layer = Upscale2DLayer(layer, (2, 2), mode='bilinear')
layer = BatchNorm(Conv2DLayer(
layer, 256, 3, stride=1, pad='valid', nonlinearity=non_lin),
with_BatchNorm)
layer = Upscale2DLayer(layer, (2, 2), mode='bilinear')
layer = BatchNorm(Conv2DLayer(
layer, 256, 3, stride=1, pad='valid', nonlinearity=non_lin),
with_BatchNorm)
layer = Upscale2DLayer(layer, (2, 2), mode='bilinear')
layer = Conv2DLayer(
layer, 1, 5, stride=1, pad='valid',
nonlinearity=tanh_temperature)
elif arch == 'crepe_up':
# CREPE transposed with upscaling
# fully-connected layers
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
# project and reshape
layer = BatchNorm(DenseLayer(layer, 2**15*1*3), with_BatchNorm)
layer = ReshapeLayer(layer, ([0], 2**15, 1, 3))
# temporal convolutions
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = Upscale2DLayer(layer, (1, 3), mode='repeat')
layer = BatchNorm(Deconv2DLayer(
layer, 512, (1, 9), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = Upscale2DLayer(layer, (1, 3), mode='repeat')
layer = Deconv2DLayer(
layer, 1, (128, 6), stride=1, crop=0, W=init, b=None,
nonlinearity=tanh_temperature)
elif arch == 'crepe_noup_a':
# CREPE transposed no upscaling
# fully-connected layer
layer = BatchNorm(DenseLayer(
layer, 1024, W=init, b=None), with_BatchNorm)
# project and reshape
layer = BatchNorm(DenseLayer(
layer, 1024*1*3, W=init, b=None), with_BatchNorm)
layer = ReshapeLayer(layer, ([0], 1024, 1, 3))
# temporal convolutions
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 512, (1, 7), stride=1, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = BatchNorm(Deconv2DLayer(
layer, 1024, (128, 7), stride=3, crop=0, W=init, b=None,
nonlinearity=non_lin), with_BatchNorm)
layer = Deconv2DLayer(
layer, 1, (1, 8), stride=1, crop=0, W=init, b=None,
nonlinearity=tanh_temperature)
elif arch == 'crepe_noup_b':
# CREPE transposed no upscaling
# fully-connected layer
layer = BatchNorm(DenseLayer(layer, 1024))
# project and reshape
layer = BatchNorm(DenseLayer(layer, 1024*1*3))
layer = ReshapeLayer(layer, ([0], 1024, 1, 3))
# temporal convolutions
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0,
nonlinearity=non_lin))
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, nonlinearity=non_lin))
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, nonlinearity=non_lin))
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=1, crop=0, nonlinearity=non_lin))
layer = BatchNorm(Deconv2DLayer(
layer, 256, (1, 3), stride=3, crop=0, nonlinearity=non_lin))
layer = Deconv2DLayer(
layer, 512, (1, 9), stride=1, crop=0, nonlinearity=non_lin)
layer = Deconv2DLayer(
layer, 1, (128, 8), stride=3, crop=0, nonlinearity=tanh_temperature)
else:
return None
print("Generator output:", layer.output_shape)
return layer
def build_model(nBaseFilters=64, fs1=3, fs2=3):
net = OrderedDict()
net['input'] = InputLayer((None, 1, 540, 960))
net['econv1_1'] = batch_norm(
ConvLayer(net['input'],
num_filters=nBaseFilters,
filter_size=fs1,
pad='same',
nonlinearity=ReLU))
net['econv1_2'] = batch_norm(
ConvLayer(net['econv1_1'],
num_filters=nBaseFilters,
filter_size=fs2,
pad='same',
nonlinearity=ReLU))
net['pool1'] = PoolLayer(net['econv1_2'],
pool_size=2,
stride=2,
ignore_border=False,
mode='max')
net['econv2_1'] = batch_norm(
ConvLayer(net['pool1'],
num_filters=nBaseFilters * 2,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['econv2_2'] = batch_norm(
ConvLayer(net['econv2_1'],
num_filters=nBaseFilters * 2,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['pool2'] = PoolLayer(net['econv2_2'],
pool_size=2,
stride=2,
ignore_border=False,
mode='max')
net['econv3_1'] = batch_norm(
ConvLayer(net['pool2'],
num_filters=nBaseFilters * 4,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['econv3_2'] = batch_norm(
ConvLayer(net['econv3_1'],
num_filters=nBaseFilters * 4,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['pool3'] = PoolLayer(net['econv3_2'],
pool_size=2,
stride=2,
ignore_border=False,
mode='max')
net['econv4_1'] = batch_norm(
ConvLayer(net['pool3'],
num_filters=nBaseFilters * 8,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['econv4_2'] = batch_norm(
ConvLayer(net['econv4_1'],
num_filters=nBaseFilters * 8,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['pool4'] = PoolLayer(net['econv4_2'],
pool_size=2,
stride=2,
ignore_border=False,
mode='max')
net['econv5_1'] = batch_norm(
ConvLayer(net['pool4'],
num_filters=nBaseFilters * 16,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['econv5_2'] = batch_norm(
ConvLayer(net['econv5_1'],
num_filters=nBaseFilters * 16,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['upconv1'] = batch_norm(
Deconv2DLayer(net['econv5_2'],
num_filters=nBaseFilters * 8,
filter_size=2,
stride=2,
crop="valid",
nonlinearity=ReLU))
net['concat1'] = ConcatLayer([net['upconv1'], net['econv4_2']],
cropping=(None, None, "center", "center"))
net['dconv1_1'] = batch_norm(
ConvLayer(net['concat1'],
num_filters=nBaseFilters * 8,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['dconv1_2'] = batch_norm(
ConvLayer(net['dconv1_1'],
num_filters=nBaseFilters * 8,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['upconv2'] = batch_norm(
Deconv2DLayer(net['dconv1_2'],
num_filters=nBaseFilters * 4,
filter_size=2,
stride=2,
crop="valid",
nonlinearity=ReLU))
net['concat2'] = ConcatLayer([net['upconv2'], net['econv3_2']],
cropping=(None, None, "center", "center"))
net['dconv2_1'] = batch_norm(
ConvLayer(net['concat2'],
num_filters=nBaseFilters * 4,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['dconv2_2'] = batch_norm(
ConvLayer(net['dconv2_1'],
num_filters=nBaseFilters * 4,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['upconv3'] = batch_norm(
Deconv2DLayer(net['dconv2_2'],
num_filters=nBaseFilters * 2,
filter_size=2,
stride=2,
crop="valid",
nonlinearity=ReLU))
net['concat3'] = ConcatLayer([net['upconv3'], net['econv2_2']],
cropping=(None, None, "center", "center"))
net['dconv3_1'] = batch_norm(
ConvLayer(net['concat3'],
num_filters=nBaseFilters * 2,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['dconv3_2'] = batch_norm(
ConvLayer(net['dconv3_1'],
num_filters=nBaseFilters * 2,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['upconv4'] = batch_norm(
Deconv2DLayer(net['dconv3_2'],
num_filters=nBaseFilters,
filter_size=2,
stride=2,
crop="valid",
nonlinearity=ReLU))
net['concat4'] = ConcatLayer([net['upconv4'], net['econv1_2']],
cropping=(None, None, "center", "center"))
net['dconv4_1'] = batch_norm(
ConvLayer(net['concat4'],
num_filters=nBaseFilters,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['dconv4_2'] = batch_norm(
ConvLayer(net['dconv4_1'],
num_filters=nBaseFilters,
filter_size=3,
pad='same',
nonlinearity=ReLU))
net['output_segmentation'] = ConvLayer(net['dconv4_2'],
num_filters=2,
filter_size=1,
nonlinearity=None)
net['dimshuffle'] = DimshuffleLayer(net['output_segmentation'],
(1, 0, 2, 3))
net['reshapeSeg'] = ReshapeLayer(net['dimshuffle'], (2, -1))
net['dimshuffle2'] = DimshuffleLayer(net['reshapeSeg'], (1, 0))
net['output_flattened'] = NonlinearityLayer(net['dimshuffle2'],
nonlinearity=softmax)
return net
def create_model(input_var, input_shape, options):
conv_num_filters1 = 100
conv_num_filters2 = 150
conv_num_filters3 = 200
filter_size1 = 5
filter_size2 = 5
filter_size3 = 3
pool_size = 2
encode_size = options['BOTTLENECK']
dense_mid_size = options['DENSE']
pad_in = 'valid'
pad_out = 'full'
scaled_tanh = create_scaled_tanh()
input = InputLayer(shape=input_shape, input_var=input_var, name='input')
conv2d1 = Conv2DLayer(input,
num_filters=conv_num_filters1,
filter_size=filter_size1,
pad=pad_in,
name='conv2d1',
nonlinearity=scaled_tanh)
maxpool2d2 = MaxPool2DLayer(conv2d1,
pool_size=pool_size,
name='maxpool2d2')
conv2d3 = Conv2DLayer(maxpool2d2,
num_filters=conv_num_filters2,
filter_size=filter_size2,
pad=pad_in,
name='conv2d3',
nonlinearity=scaled_tanh)
maxpool2d4 = MaxPool2DLayer(conv2d3,
pool_size=pool_size,
name='maxpool2d4',
pad=(1, 0))
conv2d5 = Conv2DLayer(maxpool2d4,
num_filters=conv_num_filters3,
filter_size=filter_size3,
pad=pad_in,
name='conv2d5',
nonlinearity=scaled_tanh)
reshape6 = ReshapeLayer(conv2d5, shape=([0], -1), name='reshape6') # 3000
reshape6_output = reshape6.output_shape[1]
dense7 = DenseLayer(reshape6,
num_units=dense_mid_size,
name='dense7',
nonlinearity=scaled_tanh)
bottleneck = DenseLayer(dense7,
num_units=encode_size,
name='bottleneck',
nonlinearity=linear)
# print_network(bottleneck)
dense8 = DenseLayer(bottleneck,
num_units=dense_mid_size,
W=bottleneck.W.T,
name='dense8',
nonlinearity=linear)
dense9 = DenseLayer(dense8,
num_units=reshape6_output,
W=dense7.W.T,
nonlinearity=scaled_tanh,
name='dense9')
reshape10 = ReshapeLayer(dense9,
shape=([0], conv_num_filters3, 3, 5),
name='reshape10') # 32 x 4 x 7
deconv2d11 = Deconv2DLayer(reshape10,
conv2d5.input_shape[1],
conv2d5.filter_size,
stride=conv2d5.stride,
W=conv2d5.W,
flip_filters=not conv2d5.flip_filters,
name='deconv2d11',
nonlinearity=scaled_tanh)
upscale2d12 = Upscale2DLayer(deconv2d11,
scale_factor=pool_size,
name='upscale2d12')
deconv2d13 = Deconv2DLayer(upscale2d12,
conv2d3.input_shape[1],
conv2d3.filter_size,
stride=conv2d3.stride,
W=conv2d3.W,
flip_filters=not conv2d3.flip_filters,
name='deconv2d13',
nonlinearity=scaled_tanh)
upscale2d14 = Upscale2DLayer(deconv2d13,
scale_factor=pool_size,
name='upscale2d14')
deconv2d15 = Deconv2DLayer(upscale2d14,
conv2d1.input_shape[1],
conv2d1.filter_size,
stride=conv2d1.stride,
crop=(1, 0),
W=conv2d1.W,
flip_filters=not conv2d1.flip_filters,
name='deconv2d14',
nonlinearity=scaled_tanh)
reshape16 = ReshapeLayer(deconv2d15, ([0], -1), name='reshape16')
print_network(reshape16)
return reshape16
stride=1,
pad=0,
flip_filters=False,
nonlinearity=rectify,
W=lasagne.init.Normal(0.01)) ###
l_fc7 = Conv2DLayer(l_fc6,
num_filters=4096,
filter_size=(1, 1),
stride=1,
pad=0,
flip_filters=False,
nonlinearity=rectify,
W=lasagne.init.Normal(0.01)) ###
l_fc6_deconv = Deconv2DLayer(l_fc7,
num_filters=512,
filter_size=(7, 7),
stride=1,
nonlinearity=rectify,
W=lasagne.init.Normal(0.01))
l_unpool5 = InverseLayer(l_fc6_deconv, l_pool5)
l_deconv5_1 = Deconv2DLayer(l_unpool5,
num_filters=512,
filter_size=(3, 3),
stride=1,
crop='same',
nonlinearity=rectify,
W=lasagne.init.Normal(0.01))
l_deconv5_2 = Deconv2DLayer(l_deconv5_1,
num_filters=512,
filter_size=(3, 3),
def build_UNet(n_input_channels=3,
BATCH_SIZE=None,
num_output_classes=2,
pad='same',
nonlinearity=elu,
input_dim=(128, 128),
base_n_filters=64,
do_dropout=False,
weights=None):
net = OrderedDict()
net['input'] = InputLayer(
(BATCH_SIZE, n_input_channels, input_dim[0], input_dim[1]))
net['contr_1_1'] = batch_norm(
ConvLayer(
net['input'],
num_filters=base_n_filters,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal(),
))
net['contr_1_2'] = batch_norm(
ConvLayer(net['contr_1_1'],
num_filters=base_n_filters,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['pool1'] = Pool2DLayer(net['contr_1_2'], pool_size=2)
net['contr_2_1'] = batch_norm(
ConvLayer(net['pool1'],
num_filters=base_n_filters * 2,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['contr_2_2'] = batch_norm(
ConvLayer(net['contr_2_1'],
num_filters=base_n_filters * 2,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['pool2'] = Pool2DLayer(net['contr_2_2'], pool_size=2)
net['contr_3_1'] = batch_norm(
ConvLayer(net['pool2'],
num_filters=base_n_filters * 4,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['contr_3_2'] = batch_norm(
ConvLayer(net['contr_3_1'],
num_filters=base_n_filters * 4,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['pool3'] = Pool2DLayer(net['contr_3_2'], pool_size=2)
net['contr_4_1'] = batch_norm(
ConvLayer(net['pool3'],
num_filters=base_n_filters * 8,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['contr_4_2'] = batch_norm(
ConvLayer(net['contr_4_1'],
num_filters=base_n_filters * 8,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
l = net['pool4'] = Pool2DLayer(net['contr_4_2'], pool_size=2)
if do_dropout:
l = DropoutLayer(l, p=0.4)
net['encode_1'] = batch_norm(
ConvLayer(l,
num_filters=base_n_filters * 16,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['encode_2'] = batch_norm(
ConvLayer(net['encode_1'],
num_filters=base_n_filters * 16,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['upscale1'] = batch_norm(
Deconv2DLayer(net['encode_2'],
num_filters=base_n_filters * 16,
filter_size=2,
stride=2,
crop="valid",
nonlinearity=nonlinearity,
W=GlorotNormal()))
net['concat1'] = ConcatLayer([net['upscale1'], net['contr_4_2']],
cropping=(None, None, "center", "center"))
net['expand_1_1'] = batch_norm(
ConvLayer(net['concat1'],
num_filters=base_n_filters * 8,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['expand_1_2'] = batch_norm(
ConvLayer(net['expand_1_1'],
num_filters=base_n_filters * 8,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['upscale2'] = batch_norm(
Deconv2DLayer(net['expand_1_2'],
num_filters=base_n_filters * 8,
filter_size=2,
stride=2,
crop="valid",
nonlinearity=nonlinearity,
W=GlorotNormal()))
net['concat2'] = ConcatLayer([net['upscale2'], net['contr_3_2']],
cropping=(None, None, "center", "center"))
net['expand_2_1'] = batch_norm(
ConvLayer(net['concat2'],
num_filters=base_n_filters * 4,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['expand_2_2'] = batch_norm(
ConvLayer(net['expand_2_1'],
num_filters=base_n_filters * 4,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['upscale3'] = batch_norm(
Deconv2DLayer(net['expand_2_2'],
num_filters=base_n_filters * 4,
filter_size=2,
stride=2,
crop="valid",
nonlinearity=nonlinearity,
W=GlorotNormal()))
net['concat3'] = ConcatLayer([net['upscale3'], net['contr_2_2']],
cropping=(None, None, "center", "center"))
net['expand_3_1'] = batch_norm(
ConvLayer(net['concat3'],
num_filters=base_n_filters * 2,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['expand_3_2'] = batch_norm(
ConvLayer(net['expand_3_1'],
num_filters=base_n_filters * 2,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['upscale4'] = batch_norm(
Deconv2DLayer(net['expand_3_2'],
num_filters=base_n_filters * 2,
filter_size=2,
stride=2,
crop="valid",
nonlinearity=nonlinearity,
W=GlorotNormal()))
net['concat4'] = ConcatLayer([net['upscale4'], net['contr_1_2']],
cropping=(None, None, "center", "center"))
net['expand_4_1'] = batch_norm(
ConvLayer(net['concat4'],
num_filters=base_n_filters,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['expand_4_2'] = batch_norm(
ConvLayer(net['expand_4_1'],
num_filters=base_n_filters,
filter_size=3,
nonlinearity=nonlinearity,
pad=pad,
W=GlorotNormal()))
net['output_segmentation'] = ConvLayer(net['expand_4_2'],
num_filters=num_output_classes,
filter_size=1,
nonlinearity=None)
net['dimshuffle'] = DimshuffleLayer(net['output_segmentation'],
(1, 0, 2, 3))
net['reshapeSeg'] = ReshapeLayer(net['dimshuffle'],
(num_output_classes, -1))
net['dimshuffle2'] = DimshuffleLayer(net['reshapeSeg'], (1, 0))
net['output_flattened'] = NonlinearityLayer(
net['dimshuffle2'], nonlinearity=lasagne.nonlinearities.softmax)
if weights is not None:
lasagne.layers.set_all_param_values(net['output_flattened'], weights)
return net
