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import tensorflow as tf
import tensorlayer as tl
from tensorlayer.layers import Input, Dense, DeConv2d, Reshape, BatchNorm2d, Conv2d, Flatten
def get_generator(shape, gf_dim=64): # Dimension of gen filters in first conv layer. [64]
image_size = 64
s16 = image_size // 16
# w_init = tf.glorot_normal_initializer()
w_init = tf.random_normal_initializer(stddev=0.02)
gamma_init = tf.random_normal_initializer(1., 0.02)
ni = Input(shape)
nn = Dense(n_units=(gf_dim * 8 * s16 * s16), W_init=w_init, b_init=None)(ni)
nn = Reshape(shape=[-1, s16, s16, gf_dim*8])(nn)
nn = BatchNorm2d(decay=0.9, act=tf.nn.relu, gamma_init=gamma_init, name=None)(nn)
nn = DeConv2d(gf_dim * 4, (5, 5), (2, 2), W_init=w_init, b_init=None)(nn)
nn = BatchNorm2d( decay=0.9, act=tf.nn.relu, gamma_init=gamma_init)(nn)
nn = DeConv2d(gf_dim * 2, (5, 5), (2, 2), W_init=w_init, b_init=None)(nn)
nn = BatchNorm2d(decay=0.9, act=tf.nn.relu, gamma_init=gamma_init)(nn)
nn = DeConv2d(gf_dim, (5, 5), (2, 2), W_init=w_init, b_init=None)(nn)
nn = BatchNorm2d(decay=0.9, act=tf.nn.relu, gamma_init=gamma_init)(nn)
nn = DeConv2d(3, (5, 5), (2, 2), act=tf.nn.tanh, W_init=w_init)(nn)
return tl.models.Model(inputs=ni, outputs=nn, name='generator')
def get_discriminator(shape, df_dim=64): # Dimension of discrim filters in first conv layer. [64]
# w_init = tf.glorot_normal_initializer()
w_init = tf.random_normal_initializer(stddev=0.02)
gamma_init = tf.random_normal_initializer(1., 0.02)
lrelu = lambda x : tf.nn.leaky_relu(x, 0.2)
ni = Input(shape)
nn = Conv2d(df_dim, (5, 5), (2, 2), act=lrelu, W_init=w_init)(ni)
nn = Conv2d(df_dim*2, (5, 5), (2, 2), W_init=w_init, b_init=None)(nn)
nn = BatchNorm2d(decay=0.9, act=lrelu, gamma_init=gamma_init)(nn)
nn = Conv2d(df_dim*4, (5, 5), (2, 2), W_init=w_init, b_init=None)(nn)
nn = BatchNorm2d(decay=0.9, act=lrelu, gamma_init=gamma_init)(nn)
nn = Conv2d(df_dim*8, (5, 5), (2, 2), W_init=w_init, b_init=None)(nn)
nn = BatchNorm2d(decay=0.9, act=lrelu, gamma_init=gamma_init)(nn)
nn = Flatten()(nn)
nn = Dense(n_units=1, act=tf.identity, W_init=w_init)(nn)
return tl.models.Model(inputs=ni, outputs=nn, name='discriminator')
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