def texture_loss(x, p=16):
_, h, w, c = x.get_shape().as_list()
x = normalize(x)
assert h % p == 0 and w % p == 0
logger.info(
'Create texture loss for layer {} with shape {}'.
format(x.name, x.get_shape()))
x = tf.space_to_batch_nd(
x, [p, p],
[[0, 0], [0, 0]]) # [b * ?, h/p, w/p, c]
x = tf.reshape(x, [p, p, -1, h // p, w // p, c
]) # [p, p, b, h/p, w/p, c]
x = tf.transpose(
x, [2, 3, 4, 0, 1, 5]) # [b * ?, p, p, c]
patches_a, _, patches_b = tf.split(
x, 3, axis=0
) # each is b,h/p,w/p,p,p,c; split to render, _image, style
patches_a = tf.reshape(
patches_a, [-1, p, p, c]) # [b * ?, p, p, c]
patches_b = tf.reshape(
patches_b, [-1, p, p, c]) # [b * ?, p, p, c]
return tf.losses.mean_squared_error(
gram_matrix(patches_a),
gram_matrix(patches_b),
reduction=tf.losses.Reduction.MEAN)
def __enter__(self):
if self.dilation_factor > 1:
self._tensor = tf.space_to_batch_nd(self._tensor,
self.block_shape,
self.zero_paddings,
name='dilated')
return self
def build_graph(parameters):
"""Build a space_to_batch graph given `parameters`."""
input_tensor = tf.placeholder(dtype=parameters["dtype"],
name="input",
shape=parameters["input_shape"])
input_tensors = [input_tensor]
# Get block_shape either as a const or as a placeholder (tensor).
if parameters["constant_block_shape"]:
block_shape = parameters["block_shape"]
else:
shape = [len(parameters["block_shape"])]
block_shape = tf.placeholder(dtype=tf.int32,
name="shape",
shape=shape)
input_tensors.append(block_shape)
# Get paddings either as a const or as a placeholder (tensor).
if parameters["constant_paddings"]:
paddings = parameters["paddings"]
else:
shape = [len(parameters["paddings"]), 2]
paddings = tf.placeholder(dtype=tf.int32,
name="paddings",
shape=shape)
input_tensors.append(paddings)
out = tf.space_to_batch_nd(input_tensor, block_shape, paddings)
return input_tensors, [out]
def tf_op(patch_size, x):
# [256,64,16,16] -> [256,16,16,64]
x = torch.transpose(x, 1, 3)
a, b, crop_size, c = x.size()
c = x.shape[3]
# x.numpy() <- pytorch_Tensor 轉 numpy
# tf.convert_to_tensor() <- numpy 轉 tf
tf_x = tf.convert_to_tensor(x.cpu().numpy())
#tf_x = normalize(tf_x)
assert crop_size % patch_size == 0 and crop_size % patch_size == 0
# [b * ?, h/p, w/p, c] [32,128,128,64]->[8192,8,8,64]
tf_x = tf.space_to_batch_nd(tf_x, [patch_size, patch_size],
[[0, 0], [0, 0]])
# [p, p, b, h/p, w/p, c] [8192,8,8,64]->[16,16,32,8,8,64]
tf_x = tf.reshape(tf_x, [
patch_size, patch_size, -1, crop_size // patch_size,
crop_size // patch_size, c
])
# [b * ?, p, p, c] [16,16,32,8,8,64]->[32,8,8,16,16,64]
tf_x = tf.transpose(tf_x, [2, 3, 4, 0, 1, 5])
patches_tf_x = tf.reshape(tf_x, [-1, patch_size, patch_size, c])
return patches_tf_x
def space_to_batch_execution():
# about batch
# https://stackoverflow.com/questions/41175401/what-is-a-batch-in-tensorflow
with tf.Graph().as_default(), tf.Session():
a = tf.constant([[[[1], [2]], [[3], [4]]]])
print(a.get_shape())
# from a.get_shape() possible to get data for such things as 4-D with shape [batch, height, width, depth].
print("##########")
# paddings in general change indexes by step equal padding/block_size
# add additional zeros
# block_size: Non-overlapping blocks of size block_size x block size in
# the height and width dimensions are rearranged into the batch dimension at each location.
# (so should save indexes of element from old to new?)
# use to understand how much parts will be created from initial data
stb = tf.space_to_batch(a, paddings=[[0, 0], [0, 0]], block_size=2)
print(stb.get_shape())
print(stb.eval())
print("##########")
# customize out put
# divides "spatial" dimensions [1, ..., M] of the input into a grid of blocks of shape block_shape
stbn = tf.space_to_batch_nd(a,
block_shape=[1, 2],
paddings=[[0, 0], [0, 0]])
print(stbn.get_shape())
print(stbn.eval())
def build_graph(parameters):
input_tensor = tf.placeholder(
dtype=parameters["dtype"],
name="input",
shape=parameters["input_shape"])
out = tf.space_to_batch_nd(input_tensor, parameters["block_shape"],
parameters["paddings"])
return [input_tensor], [out]
def _testStaticShape(self, input_shape, block_shape, paddings, error):
block_shape = np.array(block_shape)
paddings = np.array(paddings)
# Try with sizes known at graph construction time.
with self.assertRaises(error):
_ = tf.space_to_batch_nd(
np.zeros(input_shape, np.float32), block_shape, paddings)
def space_to_batch_nd(self, block_shape, paddings):
with tf.name_scope("crt_space_to_batch_nd"):
backing = [
tf.space_to_batch_nd(xi,
block_shape=block_shape,
paddings=paddings)
for xi in self.backing
]
return DenseTensor(backing)
def _testPad(self, inputs, block_shape, paddings, outputs):
block_shape = np.array(block_shape)
paddings = np.array(paddings).reshape((len(block_shape), 2))
for use_gpu in [False, True]:
with self.test_session(use_gpu=use_gpu):
# outputs = space_to_batch(inputs)
x_tf = tf.space_to_batch_nd(tf.to_float(inputs), block_shape, paddings)
self.assertAllEqual(x_tf.eval(), outputs)
# inputs = batch_to_space(outputs)
x_tf = tf.batch_to_space_nd(tf.to_float(outputs), block_shape, paddings)
self.assertAllEqual(x_tf.eval(), inputs)
def extract_patches(image,
patch_size,
padding="VALID",
rates=[1, 1, 1, 1],
strides=None,
ksizes=None):
"""
Function which splits image of shape [height, width, channels] into patches with more convenient ordering than the built in tensorflow function
tf.image.extract_image_patches (https://www.tensorflow.org/versions/r1.12/api_docs/python/tf/image/extract_image_patches)
Returns
-------
patches: image patches of shape [num_patches, patch_size, patch_size, channels]
"""
# Set strides and ksizes if not passed as arguments
if strides is None:
strides = [1, patch_size, patch_size, 1]
if ksizes is None:
ksizes = [1, patch_size, patch_size, 1]
height, width, channels = image.get_shape().as_list()
# Extract patches from the image using tensorflow function
patches = tf.image.extract_image_patches(tf.split(image, channels, axis=2),
ksizes, strides, rates, padding)
patches = tf.expand_dims(patches, 0)
#num_patches = [int(image.shape.as_list()[0] / patch_size), int(image.shape.as_list()[1] / patch_size)]
num_patches = [patches.shape.as_list()[2], patches.shape.as_list()[3]]
num_patches = tf.shape(patches)[2:4]
# Change grid layout of [1, channels, x, y, pixels] to [patches, channels, 1, 1, pixels]
patches = tf.space_to_batch_nd(
patches, tf.concat([tf.ones([1], dtype=tf.int32), num_patches], 0),
[[0, 0], [0, 0], [0, 0]])
# Squeeze [patches, channels, 1, 1, pixels] to [patches, channels, pixels]
patches = tf.squeeze(patches, axis=[2, 3])
# Change shape to channels last: [patches, channels, pixels] to [patches, pixels, channels]
patches = tf.transpose(patches, perm=[0, 2, 1])
# Reshape from [patches, pixels, channels] to [patches, rows, cols, channels]
patches = tf.reshape(
patches,
tf.stack(
[tf.reduce_prod(num_patches), patch_size, patch_size, channels]))
return patches
def _testDynamicShape(self, input_shape, block_shape, paddings):
block_shape = np.array(block_shape)
paddings = np.array(paddings)
# Try with sizes unknown at graph construction time.
input_placeholder = tf.placeholder(tf.float32)
block_shape_placeholder = tf.placeholder(tf.int32, shape=block_shape.shape)
paddings_placeholder = tf.placeholder(tf.int32)
t = tf.space_to_batch_nd(input_placeholder, block_shape_placeholder,
paddings_placeholder)
with self.assertRaises(ValueError):
_ = t.eval({input_placeholder: np.zeros(input_shape, np.float32),
block_shape_placeholder: block_shape,
paddings_placeholder: paddings})
def extract_patches(image, p, shape=None):
if shape:
bs, h, w, c = shape
else:
bs, h, w, c = image.shape
# Image to Patches Conversion
pad = [[0, 0], [0, 0]]
patches = tf.space_to_batch_nd(image, [p, p], pad)
patches = tf.split(patches, p * p, 0)
patches = tf.stack(patches, 3)
patches = tf.reshape(patches, [bs * (h // p) * (w // p), p, p, c])
return patches
def create_space_to_batch_net(self, in_shape, pads_value,
block_shape_value, out_shape, ir_version,
use_new_frontend):
"""
Tensorflow net IR net
Input->SpaceToBatch => Input->SpaceToBatch
"""
#
# Create Tensorflow model
#
import tensorflow as tf
tf.compat.v1.reset_default_graph()
# Create the graph and model
with tf.compat.v1.Session() as sess:
x = tf.compat.v1.placeholder(tf.float32, in_shape, 'Input')
pads = tf.constant(pads_value)
block_shape = tf.constant(block_shape_value)
tf.space_to_batch_nd(x, block_shape, pads, name='Operation')
tf.compat.v1.global_variables_initializer()
tf_net = sess.graph_def
#
# Create reference IR net
# Please, specify 'type': 'Input' for input node
# Moreover, do not forget to validate ALL layer attributes!!!
#
ref_net = None
return tf_net, ref_net
def get_img_patches(img, patch_size):
# getinitial data
p = patch_size #patch size
h = tf.shape(img)[1] #image size
c = tf.shape(img)[3] #image channels
# Image to Patches Conversion
pad = [[0, 0], [0, 0]]
patches = tf.space_to_batch_nd(img, [p, p], pad)
patches = tf.split(patches, p * p, 0)
patches = tf.stack(patches, 3)
patches = tf.reshape(patches, [(h / p)**2, p, p, c])
#ueError: Cannot reshape a tensor with 12582912 elements to shape [0,128,128,2048] (0 elements) for 'Reshape' (op: 'Reshape') with input shapes: [1,16,16,16384,3], [4] and with input tensors computed as partial shapes: input[1] = [0,128,128,2048].
return patches
def test_conv_4():
image_input = ImageInput(seed=713,
batch_size=3,
image_h=4,
image_w=4,
image_c=5)
in_node = image_input.get_placeholder("image", data_type=tf.float32)
constr = NNImageOps(in_node)
constr.set_filter_size([7, 7, 16, 5])
constr.set_output_shape([3, 8, 8, 16])
constr.set_stride_size([1, 2, 2, 1])
in1 = constr.execute("conv2d_transpose") # size is (3, 8, 8, 16)
constr.set_image(in1)
constr.set_filter_size([2, 2, 32, 16])
constr.set_output_shape([3, 8, 8, 32])
constr.set_rate(2)
in02 = constr.execute("atrous_conv2d_transpose") # size is (3,8,8,32)
constr.set_image(in02)
constr.set_filter_size([2, 2, 32, 2])
constr.set_pointwise_filter([1, 1, 64, 8])
constr.set_stride_size([1, 1, 1, 1])
constr.set_rate([1, 2])
in2 = constr.execute("separable_conv2d") # (3, 8, 8, 8)
constr.set_image(in2)
constr.set_filter_size([2, 2, 8, 4])
constr.set_stride_size([1, 1, 1, 1])
constr.set_rate([3, 2])
in3 = constr.execute("depthwise_conv2d") # size (3,8,8,32)
in33 = tf.space_to_batch_nd(in3, [3, 3],
paddings=[[1, 0], [0, 1]]) # size (27,3,3,32)
constr.set_image(tf.reshape(in33, [27 * 2, 12, 12]))
constr.set_filter_size([2, 12, 2])
constr.set_stride_size(1)
in4 = constr.execute("conv1d") # size (54,12,2)
out_node = tf.identity(in4, name="output")
placeholders = [in_node]
predictions = [out_node]
tfp = TensorFlowPersistor(save_dir="conv_4")
predictions_after_freeze = tfp \
.set_placeholders(placeholders) \
.set_output_tensors(predictions) \
.set_test_data(image_input.get_test_data()) \
.build_save_frozen_graph()
print(predictions_after_freeze[0].shape)
if __name__ == "main":
test_conv_4()
def generate_patches(image, patch_h, patch_w):
'''Splits an image into patches of size patch_h x patch_w
Input: image of shape [image_h, image_w, image_ch]
Output: batch of patches shape [n, patch_h, patch_w, image_ch]
'''
pad = [[0, 0], [0, 0]]
image_ch = 3
p_area = patch_h * patch_w
patches = tf.space_to_batch_nd(image, [patch_h, patch_w], pad)
patches = tf.split(patches, p_area, 0)
patches = tf.stack(patches, 3)
patches = tf.reshape(patches, [-1, patch_h, patch_w, image_ch])
return patches
def _checkGrad(self, x, block_shape, paddings):
block_shape = np.array(block_shape)
paddings = np.array(paddings).reshape((len(block_shape), 2))
with self.test_session():
tf_x = tf.convert_to_tensor(x)
tf_y = tf.space_to_batch_nd(tf_x, block_shape, paddings)
epsilon = 1e-5
((x_jacob_t, x_jacob_n)) = tf.test.compute_gradient(
tf_x,
x.shape,
tf_y,
tf_y.get_shape().as_list(),
x_init_value=x,
delta=epsilon)
self.assertAllClose(x_jacob_t, x_jacob_n, rtol=1e-2, atol=epsilon)
def _generic_masked_test(t, block_shape, paddings):
with tf.Session() as sess:
out = tf.space_to_batch_nd(t,
block_shape=block_shape,
paddings=paddings)
actual = sess.run(out)
with tfe.protocol.Pond() as prot:
b = prot.mask(prot.define_private_variable(t))
out = prot.space_to_batch_nd(b,
block_shape=block_shape,
paddings=paddings)
with tfe.Session() as sess:
sess.run(tf.global_variables_initializer())
final = sess.run(out.reveal())
np.testing.assert_array_almost_equal(final, actual, decimal=3)
def texture_loss(x, p=16):
_, h, w, c = x.get_shape().as_list()
x = normalize(x)
assert h % p == 0 and w % p == 0
logger.info('Create texture loss for layer {} with shape {}'.format(x.name, x.get_shape()))
x = tf.space_to_batch_nd(x, [p, p], [[0, 0], [0, 0]]) # [b * ?, h/p, w/p, c]
x = tf.reshape(x, [p, p, -1, h // p, w // p, c]) # [p, p, b, h/p, w/p, c]
x = tf.transpose(x, [2, 3, 4, 0, 1, 5]) # [b * ?, p, p, c]
patches_a, patches_b = tf.split(x, 2, axis=0) # each is b,h/p,w/p,p,p,c
patches_a = tf.reshape(patches_a, [-1, p, p, c]) # [b * ?, p, p, c]
patches_b = tf.reshape(patches_b, [-1, p, p, c]) # [b * ?, p, p, c]
return tf.losses.mean_squared_error(
gram_matrix(patches_a),
gram_matrix(patches_b),
reduction=Reduction.MEAN
)
def forward(self):
pad = [[self.lay.pad, self.lay.pad]] * 2
#print([[0, 0]] + pad + [[0, 0]])
#temp = tf.pad(self.inp.out, [[0, 0]] + pad + [[0, 0]])
temp = tf.space_to_batch_nd(self.inp.out, [1, 1], pad, name=None)
if self.lay.groups == 1:
temp = tf.nn.conv2d(temp,
self.lay.w['kernel'],
padding='VALID',
name=self.scope,
strides=[1] + [self.lay.stride] * 2 + [1])
else:
temp = tf.nn.depthwise_conv2d(temp,
self.lay.w['kernel'],
padding='VALID',
strides=[1] + [self.lay.stride] * 2 +
[1])
if self.lay.batch_norm:
temp = self.batchnorm(self.lay, temp)
self.out = tf.nn.bias_add(temp, self.lay.w['biases'])
def texture_loss(x, p=16):
x = normalize(x)
_, h, w, c = x.get_shape().as_list()
assert h % p == 0 and w % p == 0
logger.info(
'Create texture loss for layer {} with shape {}'.
format(x.name, x.get_shape()))
x = tf.space_to_batch_nd(x, [p, p], [[0, 0], [0, 0]])
x = tf.reshape(x, [p, p, -1, h // p, w // p, c])
x = tf.transpose(x, [2, 3, 4, 0, 1, 5])
patches_a, patches_b = tf.split(
x, 2) # each is b,h/p,w/p,p,p,c
patches_a = tf.reshape(patches_a, [-1, p, p, c])
patches_b = tf.reshape(patches_b, [-1, p, p, c])
return tf.losses.mean_squared_error(
gram_matrix(patches_a),
gram_matrix(patches_b),
reduction=Reduction.SUM) * (1.0 / BATCH_SIZE)
def _texture_loss(self, features, patch_size=16):
'''
the front part of features : gt features
the latter part of features : pred features
I will do calculating gt and pred features at once!
'''
#features = self._normalize(features)
batch_size, h, w, c = features.get_shape().as_list()
features = tf.space_to_batch_nd(features, [patch_size, patch_size], [[0, 0], [0, 0]])
features = tf.reshape(features, [patch_size, patch_size, -1, h // patch_size, w // patch_size, c])
features = tf.transpose(features, [2, 3, 4, 0, 1, 5])
patches_gt, patches_pred = tf.split(features, 2, axis=0)
patches_gt = tf.reshape(patches_gt, [-1, patch_size, patch_size, c])
patches_pred = tf.reshape(patches_pred, [-1, patch_size, patch_size, c])
gram_matrix_gt = self._gram_matrix(patches_gt)
gram_matrix_pred = self._gram_matrix(patches_pred)
tl_features = tf.reduce_mean(tf.reduce_sum(tf.square(gram_matrix_gt - gram_matrix_pred), axis=-1))
return tl_features
def apply_dna_kernels_dilated(image, kernels, dilation_rate=(1, 1)):
dilation_rate = list(dilation_rate) if isinstance(dilation_rate, (tuple, list)) else [dilation_rate] * 2
batch_size, height, width, color_channels = image.get_shape().as_list()
batch_size, kernel_height, kernel_width, kernel_size, num_transformed_images = kernels.get_shape().as_list()
# Flatten the spatial dimensions.
kernels_reshaped = tf.reshape(kernels, [batch_size, kernel_height, kernel_width,
kernel_size[0] * kernel_size[1], num_transformed_images])
image_padded = pad2d(image, kernel_size, rate=dilation_rate, padding='SAME', mode='SYMMETRIC')
# for dilation = [2, 2], this is equivalent to this:
# small_images = [image[:, 0::2, 0::2, :], image[:, 0::2, 1::2, :], image[:, 1::2, 0::2, :], image[:, 1::2, 1::2, :]]
small_images = tf.space_to_batch_nd(image_padded, dilation_rate, paddings=[[0, 0]] * 2)
small_images = tf.reshape(small_images, [dilation_rate[0] * dilation_rate[1], batch_size,
image_padded.get_shape().as_list()[1] // dilation_rate[0],
image_padded.get_shape().as_list()[2] // dilation_rate[1],
color_channels])
small_images = tf.unstack(small_images, axis=0)
small_outputs = []
for small_image in small_images:
# Combine channel and batch dimensions into the first dimension.
image_transposed = tf.transpose(small_image, [3, 0, 1, 2])
image_reshaped = flatten(image_transposed, 0, 1)[..., None]
patches_reshaped = tf.extract_image_patches(image_reshaped, ksizes=[1] + kernel_size + [1],
strides=[1] * 4, rates=[1] * 4, padding='VALID')
# Separate channel and batch dimensions.
patches = tf.reshape(patches_reshaped, [color_channels, batch_size,
height // dilation_rate[0], width // dilation_rate[1],
kernel_size[0] * kernel_size[1]])
# Reduce along the spatial dimensions of the kernel.
outputs = tf.reduce_sum(patches[..., None] * kernels_reshaped[None, ...], axis=-2)
# Swap channel and transformation dimensions.
outputs = tf.transpose(outputs, [4, 1, 2, 3, 0])
outputs = tf.unstack(outputs, axis=0)
small_outputs.append(outputs)
small_outputs = list(zip(*small_outputs))
small_outputs = [tf.reshape(small_output, [dilation_rate[0] * dilation_rate[1] * batch_size,
height // dilation_rate[0], width // dilation_rate[1], color_channels])
for small_output in small_outputs]
outputs = [tf.batch_to_space_nd(small_output, dilation_rate, crops=[[0, 0]] * 2) for small_output in small_outputs]
return outputs
def testUnknown(self):
# Verify that input shape and paddings shape can be unknown.
_ = tf.space_to_batch_nd(
tf.placeholder(tf.float32),
tf.placeholder(tf.int32, shape=(2,)),
tf.placeholder(tf.int32))
# Only number of input dimensions is known.
t = tf.space_to_batch_nd(
tf.placeholder(tf.float32, shape=(None, None, None, None)),
tf.placeholder(tf.int32, shape=(2,)),
tf.placeholder(tf.int32))
self.assertEqual(4, t.get_shape().ndims)
# Dimensions are partially known.
t = tf.space_to_batch_nd(
tf.placeholder(tf.float32, shape=(None, None, None, 2)),
tf.placeholder(tf.int32, shape=(2,)),
tf.placeholder(tf.int32))
self.assertEqual([None, None, None, 2], t.get_shape().as_list())
# Dimensions are partially known.
t = tf.space_to_batch_nd(
tf.placeholder(tf.float32, shape=(3, None, None, 2)), [2, 3],
tf.placeholder(tf.int32))
self.assertEqual([3 * 2 * 3, None, None, 2], t.get_shape().as_list())
# Dimensions are partially known.
t = tf.space_to_batch_nd(
tf.placeholder(tf.float32, shape=(3, None, 2, 2)), [2, 3],
[[1, 1], [0, 1]])
self.assertEqual([3 * 2 * 3, None, 1, 2], t.get_shape().as_list())
# Dimensions are fully known.
t = tf.space_to_batch_nd(
tf.placeholder(tf.float32, shape=(3, 2, 3, 2)), [2, 3],
[[1, 1], [0, 0]])
self.assertEqual([3 * 2 * 3, 2, 1, 2], t.get_shape().as_list())
def __call__(self, inputs, seq_length, dilation_rate, scope=None):
'''
Create the variables and do the forward computation
Args:
inputs: the input to the layer as a 4D
[batch_size, max_length, feature_dim, in_channels] tensor
seq_length: the length of the input sequences
dilation_rate: the rate of dilation
scope: The variable scope sets the namespace under which
the variables created during this call will be stored.
Returns:
the outputs which is a [batch_size, max_length, feature_dim, out_channels]
'''
with tf.variable_scope(scope or type(self).__name__):
in_channels = int(inputs.get_shape()[3])
stddev = 1 / (self.fwidth * self.fheight * in_channels)**0.5
#the filter parameters
w = tf.get_variable(
'filter',
[self.fheight, self.fwidth, in_channels, self.out_channels],
initializer=tf.random_normal_initializer(stddev=stddev))
#the bias parameters
b = tf.get_variable(
'bias', [self.out_channels],
initializer=tf.random_normal_initializer(stddev=stddev))
if dilation_rate == 1:
#do a 2D convolution
out = tf.nn.conv2d(inputs, w, [1, 1, 1, 1], self.padding)
#add the bias
outputs = tf.nn.bias_add(out, b)
return outputs
#arrange the padding, see tensorflow github code in nn_ops.py
if self.padding == "SAME":
filter_shape = tf.Variable.get_shape(w)
filter_height, filter_width = int(filter_shape[0]), int(
filter_shape[1])
filter_height_up = filter_height + (filter_height -
1) * (dilation_rate - 1)
pad_height = filter_height_up - 1
pad_width = filter_width - 1
pad_top = pad_height // 2
pad_bottom = pad_height - pad_top
pad_left = pad_width // 2
pad_right = pad_width - pad_left
elif self.padding == "VALID":
pad_top = 0
pad_bottom = 0
pad_left = 0
pad_right = 0
else:
raise ValueError("Invalid padding")
input_shape = tf.shape(inputs)
in_height = input_shape[1] + pad_top + pad_bottom
in_width = input_shape[2] + pad_left + pad_right
# More padding so that rate divides the height of the input.
pad_bottom_extra = (dilation_rate -
in_height % dilation_rate) % dilation_rate
pad_right_extra = 0
# The paddings argument to space_to_batch includes both padding components.
space_to_batch_pad = [[pad_top, pad_bottom + pad_bottom_extra],
[pad_left, pad_right + pad_right_extra]]
outputs = tf.space_to_batch_nd(input=inputs,
paddings=space_to_batch_pad,
block_shape=[dilation_rate, 1])
#Do the convolution
outputs = tf.nn.conv2d(input=outputs,
filter=w,
strides=[1, 1, 1, 1],
padding="VALID",
name=scope)
# The crops argument to batch_to_space is just the extra padding component.
batch_to_space_crop = [[0, pad_bottom_extra], [0, pad_right_extra]]
outputs = tf.batch_to_space_nd(input=outputs,
crops=batch_to_space_crop,
block_shape=[dilation_rate, 1])
#Add the bias
outputs = tf.nn.bias_add(outputs, b)
return outputs
def _construct_space_to_batch_nd(input_shape):
a = tf.placeholder(tf.float32, shape=input_shape, name="input")
block_shape = tf.constant([2, 2], dtype=tf.int32)
paddings = tf.constant([[0, 0], [2, 0]], dtype=tf.int32)
x = tf.space_to_batch_nd(a, block_shape=block_shape, paddings=paddings)
return x, a
import tensorflow as tf in_ = tf.compat.v1.placeholder(tf.float32, shape=[1, 2, 2, 1], name="Hole") bs_ = tf.constant([2, 2], name="Hole") pd_ = tf.constant([[0, 0], [0, 0]], name="Hole") op_ = tf.space_to_batch_nd(in_, bs_, pd_)
def inception_resnet_v2_fcn8(inputs, num_classes=20, is_training=True,
dropout_keep_prob=0.8,
reuse=None,
scope='InceptionResnetV2'):
"""Creates the Inception Resnet V2 model.
Args:
inputs: a 4-D tensor of size [batch_size, height, width, 3].
num_classes: number of predicted classes.
is_training: whether is training or not.
dropout_keep_prob: float, the fraction to keep before final layer.
reuse: whether or not the network and its variables should be reused. To be
able to reuse 'scope' must be given.
scope: Optional variable_scope.
Returns:
logits: the logits outputs of the model.
(end_points: the set of end_points from the inception model.)
"""
# end_points = {}
with tf.variable_scope(scope, 'InceptionResnetV2', [inputs], reuse=reuse):
with slim.arg_scope([slim.batch_norm, slim.dropout],
is_training=is_training):
with slim.arg_scope([slim.conv2d, slim.max_pool2d, slim.avg_pool2d],
stride=1, padding='SAME'):
# 149 x 149 x 32
net = slim.conv2d(inputs, 32, 3, stride=2, padding='VALID',
scope='Conv2d_1a_3x3')
#end_points['Conv2d_1a_3x3'] = net
# 147 x 147 x 32
net = slim.conv2d(net, 32, 3, padding='VALID',
scope='Conv2d_2a_3x3')
#end_points['Conv2d_2a_3x3'] = net
# 147 x 147 x 64
net = slim.conv2d(net, 64, 3, scope='Conv2d_2b_3x3')
#end_points['Conv2d_2b_3x3'] = net
# 73 x 73 x 64
net = slim.max_pool2d(net, 3, stride=2, padding='VALID',
scope='MaxPool_3a_3x3')
#end_points['MaxPool_3a_3x3'] = net
# 73 x 73 x 80
net = slim.conv2d(net, 80, 1, padding='VALID',
scope='Conv2d_3b_1x1')
#end_points['Conv2d_3b_1x1'] = net
# 71 x 71 x 192
net = slim.conv2d(net, 192, 3, padding='VALID',
scope='Conv2d_4a_3x3')
#end_points['Conv2d_4a_3x3'] = net
# 35 x 35 x 192
net = slim.max_pool2d(net, 3, stride=2, padding='VALID',
scope='MaxPool_5a_3x3')
#end_points['MaxPool_5a_3x3'] = net
# 35 x 35 x 320
with tf.variable_scope('Mixed_5b'):
with tf.variable_scope('Branch_0'):
tower_conv = slim.conv2d(net, 96, 1, scope='Conv2d_1x1')
with tf.variable_scope('Branch_1'):
tower_conv1_0 = slim.conv2d(net, 48, 1, scope='Conv2d_0a_1x1')
tower_conv1_1 = slim.conv2d(tower_conv1_0, 64, 5,
scope='Conv2d_0b_5x5')
with tf.variable_scope('Branch_2'):
tower_conv2_0 = slim.conv2d(net, 64, 1, scope='Conv2d_0a_1x1')
tower_conv2_1 = slim.conv2d(tower_conv2_0, 96, 3,
scope='Conv2d_0b_3x3')
tower_conv2_2 = slim.conv2d(tower_conv2_1, 96, 3,
scope='Conv2d_0c_3x3')
with tf.variable_scope('Branch_3'):
tower_pool = slim.avg_pool2d(net, 3, stride=1, padding='SAME',
scope='AvgPool_0a_3x3')
tower_pool_1 = slim.conv2d(tower_pool, 64, 1,
scope='Conv2d_0b_1x1')
net = tf.concat(axis=3, values=[tower_conv, tower_conv1_1,
tower_conv2_2, tower_pool_1])
#end_points['Mixed_5b'] = net
net = slim.repeat(net, 10, block35, scale=0.17)
#_8stride_end = net
# use bilinear interpolation instead of off-centered zero padding
net = tf.image.resize_images(net,
[tf.shape(net)[1]+1,tf.shape(net)[2]+1],
method=tf.image.ResizeMethod.BILINEAR,
align_corners=True)
# 17 x 17 x 1024
with tf.variable_scope('Mixed_6a'):
with tf.variable_scope('Branch_0'):
tower_conv = slim.conv2d(net, 384, 3, stride=1, padding='VALID',
scope='Conv2d_1a_3x3')
with tf.variable_scope('Branch_1'):
tower_conv1_0 = slim.conv2d(net, 256, 1, scope='Conv2d_0a_1x1')
tower_conv1_1 = slim.conv2d(tower_conv1_0, 256, 3,
scope='Conv2d_0b_3x3')
tower_conv1_2 = slim.conv2d(tower_conv1_1, 384, 3,
stride=1, padding='VALID',
scope='Conv2d_1a_3x3')
with tf.variable_scope('Branch_2'):
tower_pool = slim.max_pool2d(net, 3, stride=1, padding='VALID',
scope='MaxPool_1a_3x3')
net = tf.concat(axis=3, values=[tower_conv, tower_conv1_2, tower_pool])
net = tf.space_to_batch_nd(input=net, block_shape=[2,2], paddings=[[0,0],[0,0]])
#end_points['Mixed_6a'] = net
net = slim.repeat(net, 15, block17, scale=0.10)
#_16stride_end = net
# Auxillary tower
# with tf.variable_scope('AuxLogits'):
# aux = slim.avg_pool2d(net, 5, stride=3, padding='VALID',
# scope='Conv2d_1a_3x3')
# aux = slim.conv2d(aux, 128, 1, scope='Conv2d_1b_1x1')
# aux = slim.conv2d(aux, 768, aux.get_shape()[1:3],
# padding='VALID', scope='Conv2d_2a_5x5')
# aux = slim.flatten(aux)
# aux = slim.fully_connected(aux, num_classes, activation_fn=None,
# scope='Logits')
# end_points['AuxLogits'] = aux
#--------------------------------------------------
# # use bilinear interpolation instead of off-centered zero padding
# net = tf.image.resize_images(net,
# [tf.shape(net)[1]+1,tf.shape(net)[2]+1],
# method=tf.image.ResizeMethod.BILINEAR,
# align_corners=True)
#
# net = tf.space_to_batch_nd(input=net, block_shape=[2,2], paddings=[[0,0],[0,0]])
#
# with tf.variable_scope('Mixed_7a'):
# with tf.variable_scope('Branch_0'):
# tower_conv = slim.conv2d(net, 256, 1, scope='Conv2d_0a_1x1')
# tower_conv_1 = slim.conv2d(tower_conv, 384, 3, stride=1,
# padding='VALID', scope='Conv2d_1a_3x3')
# with tf.variable_scope('Branch_1'):
# tower_conv1 = slim.conv2d(net, 256, 1, scope='Conv2d_0a_1x1')
# tower_conv1_1 = slim.conv2d(tower_conv1, 288, 3, stride=1,
# padding='VALID', scope='Conv2d_1a_3x3')
# with tf.variable_scope('Branch_2'):
# tower_conv2 = slim.conv2d(net, 256, 1, scope='Conv2d_0a_1x1')
# tower_conv2_1 = slim.conv2d(tower_conv2, 288, 3,
# scope='Conv2d_0b_3x3')
# tower_conv2_2 = slim.conv2d(tower_conv2_1, 320, 3, stride=1,
# padding='VALID', scope='Conv2d_1a_3x3')
# with tf.variable_scope('Branch_3'):
# tower_pool = slim.max_pool2d(net, 3, stride=1, padding='VALID',
# scope='MaxPool_1a_3x3')
# net = tf.concat(axis=3, values=[tower_conv_1, tower_conv1_1,
# tower_conv2_2, tower_pool])
#
# end_points['Mixed_7a'] = net
#
# net = slim.repeat(net, 9, block8, scale=0.20)
# net = block8(net, activation_fn=None)
#
# net = slim.conv2d(net, 1536, 1, scope='Conv2d_7b_1x1')
#
net = tf.batch_to_space_nd(input=net, block_shape=[2,2], crops=[[0,0],[0,0]])
#
# net = tf.batch_to_space_nd(input=net, block_shape=[2,2], crops=[[0,0],[0,0]])
#
_32stride_end = net
#
# end_points['Conv2d_7b_1x1'] = net
#--------------------------------------------------
# comment final classifier stage
# with tf.variable_scope('Logits'):
# end_points['PrePool'] = net
# net = slim.avg_pool2d(net, net.get_shape()[1:3], padding='VALID',
# scope='AvgPool_1a_8x8')
# net = slim.flatten(net)
#
# net = slim.dropout(net, dropout_keep_prob, is_training=is_training,
# scope='Dropout')
#
# end_points['PreLogitsFlatten'] = net
# logits = slim.fully_connected(net, num_classes, activation_fn=None,
# scope='Logits')
# end_points['Logits'] = logits
# end_points['Predictions'] = tf.nn.softmax(logits, name='Predictions')
with tf.variable_scope('output_generation'):
redim_s16_convlayer = slim.conv2d(_32stride_end, num_classes, 1,
scope='redim_Conv2d_1x1',
activation_fn=None)
ksize=8
stride=4
strides = [1, stride, stride, 1]
in_features = num_classes
f_shape = [ksize, ksize, in_features, in_features]
weights = get_deconv_filter(f_shape)
in_shape = tf.shape(redim_s16_convlayer)
h = ((in_shape[1] - 1) * stride) + 1
w = ((in_shape[2] - 1) * stride) + 1
new_shape = [in_shape[0], h, w, num_classes]
upsample_s8_deconvlayer = tf.nn.conv2d_transpose(redim_s16_convlayer,
weights,
output_shape=tf.stack(new_shape),
strides=strides,
padding='SAME')
upsample_s8_final_resize = tf.image.resize_images(upsample_s8_deconvlayer,
[tf.shape(inputs)[1],tf.shape(inputs)[2]],
method=tf.image.ResizeMethod.BILINEAR,
align_corners=True)
logits = tf.reshape(tensor=upsample_s8_final_resize, shape=(-1, num_classes))
# prediction = upsample_s8_final_resize
# argmax_prediction = tf.argmax(prediction, dimension=3)
# end_points['Predictions'] = prediction
# end_points['Argmax_Predictions'] = argmax_prediction
return logits
def l2norm(x, name):
with tf.variable_scope(name):
layer = dnnLayer(name)
w = tf.Variable(layer.blobs[0].flatten(), dtype=dtype, name='mul')
return tf.nn.l2_normalize(x, 3, epsilon=1e-10) * w
### Graph definition ###########################################################
inp = tf.placeholder(dtype, [1, 300, 300, 3], 'data')
data_bn = batch_norm(inp, 'data_bn')
data_scale = scale(data_bn, 'data_scale')
# Instead of tf.pad we use tf.space_to_batch_nd layers which override convolution's padding strategy to explicit numbers
# data_scale = tf.pad(data_scale, [[0, 0], [3, 3], [3, 3], [0, 0]])
data_scale = tf.space_to_batch_nd(data_scale, [1, 1], [[3, 3], [3, 3]],
name='Pad')
conv1_h = conv(data_scale, stride=2, pad='VALID', name='conv1_h')
conv1_bn_h = batch_norm(conv1_h, 'conv1_bn_h')
conv1_scale_h = scale(conv1_bn_h, 'conv1_scale_h')
conv1_relu = tf.nn.relu(conv1_scale_h)
conv1_pool = tf.layers.max_pooling2d(conv1_relu,
pool_size=(3, 3),
strides=(2, 2),
padding='SAME',
name='conv1_pool')
layer_64_1_conv1_h = conv(conv1_pool, 'layer_64_1_conv1_h')
layer_64_1_bn2_h = batch_norm(layer_64_1_conv1_h, 'layer_64_1_bn2_h')
layer_64_1_scale2_h = scale(layer_64_1_bn2_h, 'layer_64_1_scale2_h')
layer_64_1_relu2 = tf.nn.relu(layer_64_1_scale2_h)
def space_to_batch_nd(self, block_shape, paddings):
backing = tf.space_to_batch_nd(self.value, block_shape, paddings)
return int32factory.tensor(backing)
return bn
def l2norm(x, name):
with tf.variable_scope(name):
layer = dnnLayer(name)
w = tf.Variable(layer.blobs[0].flatten(), dtype=dtype, name='mul')
return tf.nn.l2_normalize(x, 3, epsilon=1e-10) * w
### Graph definition ###########################################################
inp = tf.placeholder(dtype, [1, 300, 300, 3], 'data')
data_bn = batch_norm(inp, 'data_bn')
data_scale = scale(data_bn, 'data_scale')
# Instead of tf.pad we use tf.space_to_batch_nd layers which override convolution's padding strategy to explicit numbers
# data_scale = tf.pad(data_scale, [[0, 0], [3, 3], [3, 3], [0, 0]])
data_scale = tf.space_to_batch_nd(data_scale, [1, 1], [[3, 3], [3, 3]], name='Pad')
conv1_h = conv(data_scale, stride=2, pad='VALID', name='conv1_h')
conv1_bn_h = batch_norm(conv1_h, 'conv1_bn_h')
conv1_scale_h = scale(conv1_bn_h, 'conv1_scale_h')
conv1_relu = tf.nn.relu(conv1_scale_h)
conv1_pool = tf.layers.max_pooling2d(conv1_relu, pool_size=(3, 3), strides=(2, 2),
padding='SAME', name='conv1_pool')
layer_64_1_conv1_h = conv(conv1_pool, 'layer_64_1_conv1_h')
layer_64_1_bn2_h = batch_norm(layer_64_1_conv1_h, 'layer_64_1_bn2_h')
layer_64_1_scale2_h = scale(layer_64_1_bn2_h, 'layer_64_1_scale2_h')
layer_64_1_relu2 = tf.nn.relu(layer_64_1_scale2_h)
layer_64_1_conv2_h = conv(layer_64_1_relu2, 'layer_64_1_conv2_h')
layer_64_1_sum = layer_64_1_conv2_h + conv1_pool
def space_to_batch_nd(self, block_shape, paddings):
value = tf.space_to_batch_nd(self.value, block_shape, paddings)
return DenseTensor(value)
# -*- coding: utf-8 -*-
import tensorflow as tf
import numpy as np
np.random.seed(1)
b = np.linspace(1, 36, num=36).reshape((1, 6, 6, 1))
a = tf.constant(b, dtype=tf.int32)
c = tf.space_to_batch_nd(a, block_shape=[3, 3], paddings=[[0, 0], [0, 0]])
d = tf.batch_to_space_nd(c, block_shape=[3, 3], crops=[[0, 0], [0, 0]])
with tf.Session() as sess:
print(sess.run(a))
print(sess.run(c).shape)
print(sess.run(c))
print(sess.run(d).shape)
print(sess.run(d))
