def globalpool_matlab_mri_vgg_3d(input_shape, num_classes):
# Build the network of vgg for 10 classes with massive dropout and weight decay as described in the paper.
# change padding from same to valid 18.9.8
# 9.20 divided kernel numbers with 8
model = Sequential()
weight_decay = 0.0001 #0.0005 # 0.0001
model.add(Conv3D(8, (3, 3, 3), padding='same',
input_shape=input_shape)) # 9.13 64 to 32 除以2
model.add(Activation('relu'))
model.add(BatchNormalization())
#model.add(Dropout(0.3))
model.add(Conv3D(8, (3, 3, 3), padding='same')) # 9.13 64 to 32
model.add(Activation('relu'))
model.add(BatchNormalization())
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
model.add(Conv3D(32, (3, 3, 3), padding='same')) # 9.13 128 to 64
model.add(Activation('relu'))
model.add(BatchNormalization())
#model.add(Dropout(0.4))
model.add(Conv3D(32, (3, 3, 3), padding='same')) # 9.13 128 to 64
model.add(Activation('relu'))
model.add(BatchNormalization())
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
model.add(Conv3D(64, (3, 3, 3), padding='same')) # 9.13 256 to 128
model.add(Activation('relu'))
model.add(BatchNormalization())
#model.add(Dropout(0.4))
model.add(Conv3D(64, (3, 3, 3), padding='same')) # 9.13 256 to 128
model.add(Activation('relu'))
model.add(BatchNormalization())
#model.add(Dropout(0.4))
model.add(Conv3D(128, (3, 3, 3), padding='same'))
model.add(Activation('relu'))
model.add(BatchNormalization())
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
model.add(Conv3D(128, (3, 3, 3),
padding='same')) # 9.13 512 to 256 same to valid
model.add(Activation('relu'))
model.add(BatchNormalization())
#model.add(Dropout(0.4))
#model.add(Conv3D(512, (3, 3, 3), padding='same', kernel_regularizer=regularizers.l2(weight_decay)))
model.add(Conv3D(256, (3, 3, 3), padding='same'))
model.add(Activation('relu'))
model.add(BatchNormalization())
#model.add(Dropout(0.4))
model.add(Conv3D(256, (3, 3, 3), padding='same')) # 512 to 256
model.add(Activation('relu'))
model.add(BatchNormalization())
# model.add(Dropout(0.2))
model.add(GlobalAveragePooling3D())
model.add(Dense(num_classes))
model.add(Activation('softmax'))
return model
def C3D(weights='sports1M'):
"""Instantiates a C3D Kerasl model
Keyword arguments:
weights -- weights to load into model. (default is sports1M)
Returns:
A Keras model.
"""
if weights not in {'sports1M', None}:
raise ValueError('weights should be either be sports1M or None')
if K.image_data_format() == 'channels_last':
shape = (16, 112, 112, 3)
else:
shape = (3, 16, 112, 112)
model = Sequential()
model.add(
Conv3D(64,
3,
activation='relu',
padding='same',
name='conv1',
input_shape=shape))
model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
padding='same',
name='pool1'))
model.add(Conv3D(128, 3, activation='relu', padding='same', name='conv2'))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding='valid',
name='pool2'))
model.add(Conv3D(256, 3, activation='relu', padding='same', name='conv3a'))
model.add(Conv3D(256, 3, activation='relu', padding='same', name='conv3b'))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding='valid',
name='pool3'))
model.add(Conv3D(512, 3, activation='relu', padding='same', name='conv4a'))
model.add(Conv3D(512, 3, activation='relu', padding='same', name='conv4b'))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding='valid',
name='pool4'))
model.add(Conv3D(512, 3, activation='relu', padding='same', name='conv5a'))
model.add(Conv3D(512, 3, activation='relu', padding='same', name='conv5b'))
model.add(ZeroPadding3D(padding=(0, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding='valid',
name='pool5'))
model.add(Flatten())
model.add(Dense(4096, activation='relu', name='fc6'))
model.add(Dropout(0.5))
model.add(Dense(4096, activation='relu', name='fc7'))
model.add(Dropout(0.5))
model.add(Dense(487, activation='softmax', name='fc8'))
if weights == 'sports1M':
model.load_weights(cfg.c3d_model_weights)
return model
def c3d_base(input_shape=(16, 112, 112, 3), weights=False, weights_file=None):
"""
Build base model for c3D using Seqential API.
This model builds a base c3D network. http://vlg.cs.dartmouth.edu/c3d/
"""
print(input_shape)
c3d_model = models.Sequential()
# 1st layer group
c3d_model.add(
Conv3D(64, (3, 3, 3),
activation='relu',
name='conv1',
input_shape=input_shape,
strides=(1, 1, 1),
padding="same"))
c3d_model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
padding='valid',
name='pool1'))
# 2nd layer group
c3d_model.add(
Conv3D(128, (3, 3, 3),
activation='relu',
padding='same',
name='conv2',
strides=(1, 1, 1)))
c3d_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding='valid',
name='pool2'))
# 3rd layer group
c3d_model.add(
Conv3D(256, (3, 3, 3),
activation='relu',
padding='same',
name='conv3a',
strides=(1, 1, 1)))
c3d_model.add(
Conv3D(256, (3, 3, 3),
activation='relu',
padding='same',
name='conv3b',
strides=(1, 1, 1)))
c3d_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding='valid',
name='pool3'))
# 4th layer group
c3d_model.add(
Conv3D(512, (3, 3, 3),
activation='relu',
padding='same',
name='conv4a',
strides=(1, 1, 1)))
c3d_model.add(
Conv3D(512, (3, 3, 3),
activation='relu',
padding='same',
name='conv4b',
strides=(1, 1, 1)))
c3d_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding='valid',
name='pool4'))
# 5th layer group
c3d_model.add(
Conv3D(512, (3, 3, 3),
activation='relu',
padding='same',
name='conv5a',
strides=(1, 1, 1)))
c3d_model.add(
Conv3D(512, (3, 3, 3),
activation='relu',
padding='same',
name='conv5b',
strides=(1, 1, 1)))
c3d_model.add(ZeroPadding3D(padding=(0, 1, 1)))
c3d_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding='valid',
name='pool5'))
c3d_model.add(layers.Flatten())
# FC layers group
c3d_model.add(layers.Dense(4096, activation='relu', name='fc6'))
c3d_model.add(layers.Dropout(.5))
c3d_model.add(layers.Dense(4096, activation='relu', name='fc7'))
c3d_model.add(layers.Dropout(.5))
c3d_model.add(layers.Dense(487, activation='softmax', name='fc8'))
if weights:
c3d_model.load_weights(weights_file)
# Create new model
# Get input
new_input = c3d_model.input
# Find the layer to connect
hidden_layer = c3d_model.layers[-2].output
# Connect a new layer on it
new_output = layers.Dense(3, activation='softmax',
name='fc9')(hidden_layer)
# Build a new model
c3d_model_2 = models.Model(new_input, new_output)
# Remove last layer and add our own
# Fix all layers but last 3
# for layer in c3d_model_2.layers[:17]:
# layer.trainable = False
if summary:
c3d_model_2.summary()
return c3d_model_2
def c3d(self):
"""
Build a 3D convolutional network, aka C3D.
https://arxiv.org/pdf/1412.0767.pdf
With thanks:
https://gist.github.com/albertomontesg/d8b21a179c1e6cca0480ebdf292c34d2
"""
model = Sequential()
# 1st layer group
model.add(
Conv3D(64,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv1',
subsample=(1, 1, 1),
input_shape=self.input_shape))
model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
border_mode='valid',
name='pool1'))
# 2nd layer group
model.add(
Conv3D(128,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv2',
subsample=(1, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool2'))
# 3rd layer group
model.add(
Conv3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3a',
subsample=(1, 1, 1)))
model.add(
Conv3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3b',
subsample=(1, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool3'))
# 4th layer group
model.add(
Conv3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4a',
subsample=(1, 1, 1)))
model.add(
Conv3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4b',
subsample=(1, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool4'))
# 5th layer group
model.add(
Conv3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5a',
subsample=(1, 1, 1)))
model.add(
Conv3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5b',
subsample=(1, 1, 1)))
model.add(ZeroPadding3D(padding=(0, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool5'))
model.add(Flatten())
# FC layers group
model.add(Dense(4096, activation='relu', name='fc6'))
model.add(Dropout(0.5))
model.add(Dense(4096, activation='relu', name='fc7'))
model.add(Dropout(0.5))
model.add(Dense(self.nb_classes, activation='softmax'))
return model
def getCoarse2FineModel(summary=True):
# defined input
videoclip_cropped = Input((c, t, h, w), name='input1')
videoclip_original = Input((c, t, h, w), name='input2')
last_frame_bigger = Input((c, h * upsample, w * upsample), name='input3')
# coarse saliency model
coarse_saliency_model = Sequential()
coarse_saliency_model.add(
Convolution3D(64,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv1',
subsample=(1, 1, 1),
input_shape=(c, t, h, w)))
coarse_saliency_model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
border_mode='valid',
name='pool1'))
coarse_saliency_model.add(
Convolution3D(128,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv2',
subsample=(1, 1, 1)))
coarse_saliency_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool2'))
coarse_saliency_model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3a',
subsample=(1, 1, 1)))
coarse_saliency_model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3b',
subsample=(1, 1, 1)))
coarse_saliency_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool3'))
coarse_saliency_model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4a',
subsample=(1, 1, 1)))
coarse_saliency_model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4b',
subsample=(1, 1, 1)))
coarse_saliency_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(4, 2, 2),
border_mode='valid',
name='pool4'))
coarse_saliency_model.add(Reshape((512, 7, 7)))
coarse_saliency_model.add(BatchNormalization())
coarse_saliency_model.add(
Convolution2D(256, 3, 3, init='glorot_uniform', border_mode='same'))
coarse_saliency_model.add(LeakyReLU(alpha=.001))
coarse_saliency_model.add(UpSampling2D(size=(2, 2)))
coarse_saliency_model.add(BatchNormalization())
coarse_saliency_model.add(
Convolution2D(128, 3, 3, init='glorot_uniform', border_mode='same'))
coarse_saliency_model.add(LeakyReLU(alpha=.001))
coarse_saliency_model.add(UpSampling2D(size=(2, 2)))
coarse_saliency_model.add(BatchNormalization())
coarse_saliency_model.add(
Convolution2D(64, 3, 3, init='glorot_uniform', border_mode='same'))
coarse_saliency_model.add(LeakyReLU(alpha=.001))
coarse_saliency_model.add(UpSampling2D(size=(2, 2)))
coarse_saliency_model.add(BatchNormalization())
coarse_saliency_model.add(
Convolution2D(32, 3, 3, init='glorot_uniform', border_mode='same'))
coarse_saliency_model.add(LeakyReLU(alpha=.001))
coarse_saliency_model.add(UpSampling2D(size=(2, 2)))
coarse_saliency_model.add(BatchNormalization())
coarse_saliency_model.add(
Convolution2D(16, 3, 3, init='glorot_uniform', border_mode='same'))
coarse_saliency_model.add(LeakyReLU(alpha=.001))
coarse_saliency_model.add(BatchNormalization())
coarse_saliency_model.add(
Convolution2D(1, 3, 3, init='glorot_uniform', border_mode='same'))
coarse_saliency_model.add(LeakyReLU(alpha=.001))
# loss on cropped image
coarse_saliency_cropped = coarse_saliency_model(videoclip_cropped)
cropped_output = Flatten(name='cropped_output')(coarse_saliency_cropped)
# coarse-to-fine saliency model and loss
coarse_saliency_original = coarse_saliency_model(videoclip_original)
x = UpSampling2D((upsample, upsample), name='coarse_saliency_upsampled')(
coarse_saliency_original) # 112 x 4 = 448
x = merge([x, last_frame_bigger], mode='concat',
concat_axis=1) # merge the last RGB frame
x = Convolution2D(32, 3, 3, border_mode='same', init='he_normal')(x)
x = Convolution2D(64, 3, 3, border_mode='same', init='he_normal')(x)
x = LeakyReLU(alpha=.001)(x)
x = Convolution2D(32, 3, 3, border_mode='same', init='he_normal')(x)
x = LeakyReLU(alpha=.001)(x)
x = Convolution2D(32, 3, 3, border_mode='same', init='he_normal')(x)
x = LeakyReLU(alpha=.001)(x)
x = Convolution2D(16, 3, 3, border_mode='same', init='he_normal')(x)
x = LeakyReLU(alpha=.001)(x)
x = Convolution2D(4, 3, 3, border_mode='same', init='he_normal')(x)
x = LeakyReLU(alpha=.001)(x)
fine_saliency_model = Convolution2D(1,
3,
3,
border_mode='same',
activation='relu')(x)
# loss on full image
full_fine_output = Flatten(name='full_fine_output')(fine_saliency_model)
final_model = Model(
input=[videoclip_cropped, videoclip_original, last_frame_bigger],
output=[cropped_output, full_fine_output])
if summary:
print final_model.summary()
return final_model
def alexnet_jn():
inputs = Input(shape=(121, 145, 121, 1), name='input1')
# 121x145x121
conv1 = Conv3D(48,
7,
strides=1,
activation='relu',
padding='same',
kernel_initializer='he_normal',
name='conv1')(inputs)
pool1 = MaxPooling3D(pool_size=2, padding='same', name='pool1')(conv1)
bn1 = BatchNormalization(axis=1, name='batch_normalization_1')(pool1)
print("conv1 shape:", conv1.shape)
print("pool1 shape:", pool1.shape)
# conv1 shape: (?, 121, 145, 121, 48)
# pool1 shape: (?, 61, 73, 61, 48)
conv2 = Conv3D(128,
5,
strides=1,
activation='relu',
padding='same',
kernel_initializer='he_normal',
name='conv2')(bn1)
pool2 = MaxPooling3D(pool_size=2, padding='same', name='pool2')(conv2)
bn2 = BatchNormalization(axis=1, name='batch_normalization_2')(pool2)
print("conv2 shape:", conv2.shape)
print("pool2 shape:", pool2.shape)
# conv2 shape: (?, 61, 73, 61, 128)
# pool2 shape: (?, 31, 37, 31, 128)
conv3 = Conv3D(192,
3,
strides=1,
activation='relu',
padding='same',
kernel_initializer='he_normal',
name='conv3')(bn2)
bn3 = BatchNormalization(axis=1, name='batch_normalization_3')(conv3)
print("conv3 shape:", conv3.shape)
# conv3 shape: (?, 31, 37, 31, 192)
conv4 = Conv3D(192,
3,
strides=1,
activation='relu',
padding='same',
kernel_initializer='he_normal',
name='conv4')(bn3)
bn4 = BatchNormalization(axis=1, name='batch_normalization_4')(conv4)
print("conv4 shape:", conv4.shape)
# conv3 shape: (?, 31, 37, 31, 192)
conv5 = Conv3D(128,
3,
strides=1,
activation='relu',
padding='same',
kernel_initializer='he_normal',
name='conv5')(bn4)
pool3 = MaxPooling3D(pool_size=3, padding='same', name='pool3')(conv5)
bn5 = BatchNormalization(axis=1, name='batch_normalization_5')(pool3)
print("conv5 shape:", conv5.shape)
print("pool3 shape:", pool3.shape)
# conv5 shape: (?, 31, 37, 31, 128)
# pool3 shape: (?, 11, 13, 11, 128)
flatten1 = Flatten()(bn5)
fc1 = Dense(500, activation='relu', name='fc1')(flatten1)
# fc1_drop = Dropout(rate=0.25)(fc1)
fc1_drop = Dropout(rate=0.25)(fc1)
fc2 = Dense(250, activation='relu', name='fc2')(fc1_drop)
# fc2_drop = Dropout(rate=0.25)(fc2)
fc2_drop = Dropout(rate=0.25)(fc2)
fc3 = Dense(2, name='fc3')(fc2_drop)
output = Activation(activation='softmax')(fc3)
model = Model(input=inputs, output=output)
# model.compile(optimizer=SGD(lr=1e-5), loss='categorical_crossentropy', metrics=['acc'])
model.compile(optimizer=SGD(lr=1e-6),
loss='categorical_crossentropy',
metrics=['acc'])
return model
x_test /= 255
# creating the model
model = Sequential() # model made up of a linear stack of layers
# creating 3D convolution layer, with 32 filters, and a 9 x 11 x 11 filter size (time x height x width)
# filters move across video travelling 1 pixel in each dimension each time they are applied
model.add(
Convolution3D(32, (9, 11, 11),
padding='same',
input_shape=(20, 54, 54, 1),
strides=(1, 1, 1)))
model.add(Activation('relu')) # performs rectified linear activation
model.add(Convolution3D(32, (7, 9, 9)))
model.add(Activation('relu'))
model.add(MaxPooling3D(pool_size=(1, 2, 2))) # halves the height and width
model.add(Convolution3D(32, (6, 9, 9)))
model.add(Activation('relu'))
model.add(Flatten())
model.add(Dense(512)) # fully connected layer with 512 neurons
model.add(Activation('relu'))
model.add(
Dropout(0.5)
) # ignores ~ half of the neurons, selected randomly: prevents overfitting
model.add(Dense(
3)) # fully connected layer with 3 neurons corresponding to each word
model.add(Activation('softmax'))
# creating callbacks
tbCallBack = keras.callbacks.TensorBoard(log_dir='./log',
histogram_freq=1,
def conv_pool(x,kernel_size):
x = Convolution3D(32, (kernel_size,kernel_size,kernel_size), activation='relu', padding='same', data_format='channels_first')(x)
x = MaxPooling3D((3,3,3),data_format='channels_first')(x)
return x
def get_model(summary=False, backend='tf'):
""" Return the Keras model of the network
"""
model = Sequential()
if backend == 'tf':
input_shape = (16, 112, 112, 3) # l, h, w, c
else:
input_shape = (3, 16, 112, 112) # c, l, h, w
model.add(
Convolution3D(64,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv1',
input_shape=input_shape))
model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
border_mode='valid',
name='pool1'))
# 2nd layer group
model.add(
Convolution3D(128,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv2'))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool2'))
# 3rd layer group
model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3a'))
model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3b'))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool3'))
# 4th layer group
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4a'))
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4b'))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool4'))
# 5th layer group
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5a'))
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5b'))
model.add(ZeroPadding3D(padding=((0, 0), (0, 1), (0, 1)), name='zeropad5'))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool5'))
model.add(Flatten())
# FC layers group
model.add(Dense(4096, activation='relu', name='fc6'))
model.add(Dropout(.5))
model.add(Dense(4096, activation='relu', name='fc7'))
model.add(Dropout(.5))
model.add(Dense(487, activation='softmax', name='fc8'))
# model.add(Dense(101, activation='softmax', name='fc9'))
if summary:
print(model.summary())
return model
def get_model(summary=False):
#model = Sequential()
main_input = Input(shape=(48, 48, 48, 1), name='main_input')
bn0 = BatchNormalization(name='bn0')(main_input)
conv1_1 = Conv3D(filters=16,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv1_1',
kernel_initializer='he_normal')(bn0)
bn1_1 = BatchNormalization(scale=True, name='bn1_1')(conv1_1)
relu1_1 = LeakyReLU(alpha=0.01, name='relu1_1')(bn1_1)
# 1st layer group
conv1_2 = Conv3D(filters=32,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv1_2',
kernel_initializer='he_normal')(relu1_1)
bn1_2 = BatchNormalization(scale=True, name='bn1_2')(conv1_2)
relu1_2 = LeakyReLU(alpha=0.01, name='relu1_2')(bn1_2)
dropout1_1 = Dropout(.5, name='dropout1_1')(relu1_2)
conv1_3 = Conv3D(filters=32,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv1_3',
kernel_initializer='he_normal')(dropout1_1)
conv1_4 = Conv3D(filters=32,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv1_4',
kernel_initializer='he_normal')(relu1_1)
eltwise1 = add([conv1_3, conv1_4])
bn1_3 = BatchNormalization(scale=True, name='bn1_3')(eltwise1)
relu1_3 = LeakyReLU(alpha=0.01, name='relu1_3')(bn1_3)
conv1_5 = Conv3D(filters=32,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv1_5',
kernel_initializer='he_normal')(relu1_3)
bn1_4 = BatchNormalization(scale=True, name='bn1_4')(conv1_5)
relu1_4 = LeakyReLU(alpha=0.01, name='relu1_4')(bn1_4)
conv1_6 = Conv3D(filters=32,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv1_6',
kernel_initializer='he_normal')(relu1_4)
eltwise2 = add([conv1_6, eltwise1])
#bn3 = BatchNormalization(scale=True,name='bn3')(eltwise1)
#relu3 = LeakyReLU(alpha=0.01, name='relu3')(bn3)
# 2nd layer group
bn2_1 = BatchNormalization(scale=True, name='bn2_1')(eltwise2)
relu2_1 = LeakyReLU(alpha=0.01, name='relu2_1')(bn2_1)
conv2_2 = Conv3D(filters=64,
kernel_size=(3, 3, 3),
strides=(2, 2, 2),
padding='same',
name='conv2_2',
kernel_initializer='he_normal')(relu2_1)
bn2_2 = BatchNormalization(scale=True, name='bn2_2')(conv2_2)
relu2_2 = LeakyReLU(alpha=0.01, name='relu2_2')(bn2_2)
dropout2_1 = Dropout(.2, name='dropout2_1')(relu2_2)
conv2_3 = Conv3D(filters=64,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv2_3',
kernel_initializer='he_normal')(dropout2_1)
conv2_4 = Conv3D(filters=64,
kernel_size=(3, 3, 3),
strides=(2, 2, 2),
padding='same',
name='conv2_4',
kernel_initializer='he_normal')(relu2_1)
eltwise3 = add([conv2_3, conv2_4])
bn2_3 = BatchNormalization(scale=True, name='bn2_3')(eltwise3)
relu2_3 = LeakyReLU(alpha=0.01, name='relu2_3')(bn2_3)
conv2_5 = Conv3D(filters=64,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv2_5',
kernel_initializer='he_normal')(relu2_3)
bn2_4 = BatchNormalization(scale=True, name='bn2_4')(conv2_5)
relu2_4 = LeakyReLU(alpha=0.01, name='relu2_4')(bn2_4)
conv2_6 = Conv3D(filters=64,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv2_6',
kernel_initializer='he_normal')(relu2_4)
eltwise4 = add([conv2_6, eltwise3])
# 3rd layer group
bn3_1 = BatchNormalization(scale=True, name='bn3_1')(eltwise4)
relu3_1 = LeakyReLU(alpha=0.01, name='relu3_1')(bn3_1)
conv3_2 = Conv3D(filters=128,
kernel_size=(3, 3, 3),
strides=(2, 2, 2),
padding='same',
name='conv3_2',
kernel_initializer='he_normal')(relu3_1)
bn3_2 = BatchNormalization(scale=True, name='bn3_2')(conv3_2)
relu3_2 = LeakyReLU(alpha=0.01, name='relu3_2')(bn3_2)
dropout3_1 = Dropout(.2, name='dropout3_1')(relu3_2)
conv3_3 = Conv3D(filters=128,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv3_3',
kernel_initializer='he_normal')(dropout3_1)
conv3_4 = Conv3D(filters=128,
kernel_size=(3, 3, 3),
strides=(2, 2, 2),
padding='same',
name='conv3_4',
kernel_initializer='he_normal')(relu3_1)
eltwise5 = add([conv3_3, conv3_4])
bn3_3 = BatchNormalization(scale=True, name='bn3_3')(eltwise5)
relu3_3 = LeakyReLU(alpha=0.01, name='relu3_3')(bn3_3)
conv3_5 = Conv3D(filters=128,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv3_5',
kernel_initializer='he_normal')(relu3_3)
bn3_4 = BatchNormalization(scale=True, name='bn3_4')(conv3_5)
relu3_4 = LeakyReLU(alpha=0.01, name='relu3_4')(bn3_4)
conv3_6 = Conv3D(filters=128,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv3_6',
kernel_initializer='he_normal')(relu3_4)
eltwise6 = add([conv3_6, eltwise5])
# 4th layer group
bn4_1 = BatchNormalization(scale=True, name='bn4_1')(eltwise6)
relu4_1 = LeakyReLU(alpha=0.01, name='relu4_1')(bn4_1)
conv4_2 = Conv3D(filters=256,
kernel_size=(3, 3, 3),
strides=(2, 2, 2),
padding='same',
name='conv4_2',
kernel_initializer='he_normal')(relu4_1)
bn4_2 = BatchNormalization(scale=True, name='bn4_2')(conv4_2)
relu4_2 = LeakyReLU(alpha=0.01, name='relu4_2')(bn4_2)
dropout4_1 = Dropout(.2, name='dropout4_1')(relu4_2)
conv4_3 = Conv3D(filters=256,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv4_3',
kernel_initializer='he_normal')(dropout4_1)
conv4_4 = Conv3D(filters=256,
kernel_size=(3, 3, 3),
strides=(2, 2, 2),
padding='same',
name='conv4_4',
kernel_initializer='he_normal')(relu4_1)
eltwise7 = add([conv4_3, conv4_4])
bn4_3 = BatchNormalization(scale=True, name='bn4_3')(eltwise7)
relu4_3 = LeakyReLU(alpha=0.01, name='relu4_3')(bn4_3)
conv4_5 = Conv3D(filters=256,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv4_5',
kernel_initializer='he_normal')(relu4_3)
bn4_4 = BatchNormalization(scale=True, name='bn4_4')(conv4_5)
relu4_4 = LeakyReLU(alpha=0.01, name='relu4_4')(bn4_4)
conv4_6 = Conv3D(filters=256,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding='same',
name='conv4_6',
kernel_initializer='he_normal')(relu4_4)
eltwise8 = add([conv4_6, eltwise7])
# remaining parts
bn5_1 = BatchNormalization(scale=True, name='bn5_1')(eltwise8)
relu5_1 = LeakyReLU(alpha=0.01, name='relu5_1')(bn5_1)
pool1 = MaxPooling3D(pool_size=(3, 5, 5),
strides=None,
padding='valid',
data_format=None)(relu5_1)
flatten1 = Flatten()(pool1)
#fc1 = Dense(64,activation='softmax')(flatten1)
fc2 = Dense(2, activation='softmax')(flatten1)
model = Model(input=main_input, output=fc2)
if summary:
print(model.summary())
return model
#Model written in sequential manner
from keras.layers.core import Dense, Dropout, Activation, Flatten
from keras.layers.convolutional import Convolution3D, MaxPooling3D
from keras.models import Sequential
model = Sequential()
model.add(Convolution3D(32, (3,3,3), input_shape=(1,61,73,61),activation='relu', padding='same', data_format='channels_first'))
model.add(MaxPooling3D((3,3,3),data_format='channels_first'))
model.add(Convolution3D(32, (3,3,3), activation='relu', padding='same', data_format='channels_first'))
model.add(MaxPooling3D((3,3,3),data_format='channels_first'))
model.add(Flatten())
model.add(Dense(128, activation='relu'))
model.add(Dropout(0.5))
model.add(Dense(nb_classes, activation='sigmoid'))
# compile
model.compile(loss='binary_crossentropy', optimizer='adadelta', metrics=['accuracy'])
# summarize
print(model.summary())
#Model written with Input and Output
from keras.layers.core import Dense, Dropout, Activation, Flatten
from keras.layers import Input
from keras.layers.convolutional import Convolution3D, MaxPooling3D
from keras.models import Model
def conv_pool(x,kernel_size):
x = Convolution3D(32, (kernel_size,kernel_size,kernel_size), activation='relu', padding='same', data_format='channels_first')(x)
x = MaxPooling3D((3,3,3),data_format='channels_first')(x)
return x
def C3D_model(input_shape, num_classes, weights_path=None, summary=False, trainable=True, num_layers_remove=0):
"""
Return a Conv3D model with an option to load pretrained weights
"""
model = Sequential()
# 1st layer group
model.add(Conv3D(64, (3, 3, 3), activation="relu", name="conv1",
input_shape=input_shape, strides=(1, 1, 1), padding="same"))
model.add(MaxPooling3D(pool_size=(1, 2, 2), strides=(1, 2, 2), name="pool1", padding="valid"))
# 2nd layer group
model.add(Conv3D(128, (3, 3, 3), activation="relu",name="conv2",
strides=(1, 1, 1), padding="same"))
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2), name="pool2", padding="valid"))
# 3rd layer group
model.add(Conv3D(256, (3, 3, 3), activation="relu",name="conv3a",
strides=(1, 1, 1), padding="same"))
model.add(Conv3D(256, (3, 3, 3), activation="relu",name="conv3b",
strides=(1, 1, 1), padding="same"))
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2), name="pool3", padding="valid"))
# 4th layer group
model.add(Conv3D(512, (3, 3, 3), activation="relu",name="conv4a",
strides=(1, 1, 1), padding="same"))
model.add(Conv3D(512, (3, 3, 3), activation="relu",name="conv4b",
strides=(1, 1, 1), padding="same"))
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2), name="pool4", padding="valid"))
# 5th layer group
model.add(Conv3D(512, (3, 3, 3), activation="relu",name="conv5a",
strides=(1, 1, 1), padding="same"))
model.add(Conv3D(512, (3, 3, 3), activation="relu",name="conv5b",
strides=(1, 1, 1), padding="same"))
model.add(ZeroPadding3D(padding=(0, 1, 1)))
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2), name="pool5", padding="valid"))
model.add(Flatten())
# FC layers group
model.add(Dense(4096, activation='relu', name='fc6'))
model.add(Dropout(.5))
model.add(Dense(4096, activation='relu', name='fc7'))
model.add(Dropout(.5))
model.add(Dense(num_classes, activation='softmax', name='fc8'))
# Print model summary, by default False
if summary:
print('Original model summary:' )
print(model.summary())
# Path to the model file with pretrained weights, by default None
if weights_path:
print('Loading Model Weights from %s' % weights_path)
model.load_weights(weights_path)
# Pop layers from the top of the network
if num_layers_remove > 0:
print('Popping last %s layers' % num_layers_remove)
for idx in range(num_layers_remove):
model.pop()
if summary:
print('Summary after popping:')
print(model.summary())
# Set all the layers as trainable, by default True
for layer in model.layers:
layer.trainable = trainable
return model
# Load training images and labels that are stored in numpy array
"""
ntraining_set = numpy.load(
'numpy_training_datasets/late_microexpfusenetnoseimages.npy')
etraining_set = numpy.load(
'numpy_training_datasets/late_microexpfuseneteyeimages.npy')
eye_traininglabels = numpy.load(
'numpy_training_datasets/late_microexpfusenetnoselabels.npy')
nose_traininglabels = numpy.load(
'numpy_training_datasets/late_microexpfuseneteyelabels.npy')
# Late MicroExpFuseNet Model
eye_input = Input(shape=(1, 32, 32, 18))
eye_conv = Convolution3D(32, (3, 3, 15))(eye_input)
ract_1 = Activation('relu')(eye_conv)
maxpool_1 = MaxPooling3D(pool_size=(3, 3, 3))(ract_1)
ract_2 = Activation('relu')(maxpool_1)
dropout_1 = Dropout(0.5)(ract_2)
flatten_1 = Flatten()(dropout_1)
dense_1 = Dense(1024, )(flatten_1)
dropout_2 = Dropout(0.5)(dense_1)
dense_2 = Dense(128, )(dropout_2)
dropout_3 = Dropout(0.5)(dense_2)
nose_input = Input(shape=(1, 32, 32, 18))
nose_conv = Convolution3D(32, (3, 3, 15))(nose_input)
ract_3 = Activation('relu')(nose_conv)
maxpool_2 = MaxPooling3D(pool_size=(3, 3, 3))(ract_3)
ract_4 = Activation('relu')(maxpool_2)
dropout_6 = Dropout(0.5)(ract_4)
flatten_2 = Flatten()(dropout_6)
def c3d_model():
"""
Build a 3D convolutional network, aka C3D.
https://arxiv.org/pdf/1412.0767.pdf
With thanks:
https://gist.github.com/albertomontesg/d8b21a179c1e6cca0480ebdf292c34d2
"""
input_shape = (frame_sequences, frame_height, frame_widht, channel)
print("Input shape", input_shape)
model = Sequential()
# 1st layer group
model.add(
Convolution3D(filters=64,
kernel_size=(3, 3, 3),
input_shape=input_shape,
padding='same',
strides=(1, 1, 1),
activation='relu'))
model.add(MaxPooling3D(pool_size=(1, 2, 2), strides=(1, 2, 2)))
# 2nd layer group
model.add(
Convolution3D(filters=128,
kernel_size=(3, 3, 3),
padding='same',
strides=(1, 1, 1),
activation='relu'))
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
# 3rd layer group
model.add(
Convolution3D(filters=256,
kernel_size=(3, 3, 3),
padding='same',
strides=(1, 1, 1),
activation='relu'))
model.add(
Convolution3D(filters=256,
kernel_size=(3, 3, 3),
padding='same',
strides=(1, 1, 1),
activation='relu'))
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
# 4th layer group
model.add(
Convolution3D(filters=512,
kernel_size=(3, 3, 3),
padding='same',
strides=(1, 1, 1),
activation='relu'))
model.add(
Convolution3D(filters=512,
kernel_size=(3, 3, 3),
padding='same',
strides=(1, 1, 1),
activation='relu'))
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
# 5th layer group
model.add(
Convolution3D(filters=512,
kernel_size=(3, 3, 3),
padding='same',
strides=(1, 1, 1),
activation='relu'))
model.add(
Convolution3D(filters=512,
kernel_size=(3, 3, 3),
padding='same',
strides=(1, 1, 1),
activation='relu'))
model.add(ZeroPadding3D(padding=(0, 1, 1)))
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
model.add(Flatten())
# FC layers group
model.add(Dense(units=4096, activation='relu'))
model.add(Dropout(rate=0.5))
model.add(Dense(units=4096, activation='relu'))
model.add(Dropout(rate=0.5))
model.add(Dense(units=len(actions), activation='softmax'))
return model
def C3D_conv_features(summary=False):
""" Return the Keras model of the network until the fc6 layer where the
convolutional features can be extracted.
"""
from keras.layers.convolutional import Convolution3D, MaxPooling3D, ZeroPadding3D
from keras.layers.core import Dense, Dropout, Flatten
from keras.models import Sequential
model = Sequential()
# 1st layer group
model.add(
Convolution3D(64,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv1',
subsample=(1, 1, 1),
input_shape=(3, 16, 112, 112),
trainable=False))
model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
border_mode='valid',
name='pool1'))
# 2nd layer group
model.add(
Convolution3D(128,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv2',
subsample=(1, 1, 1),
trainable=False))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool2'))
# 3rd layer group
model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3a',
subsample=(1, 1, 1),
trainable=False))
model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3b',
subsample=(1, 1, 1),
trainable=False))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool3'))
# 4th layer group
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4a',
subsample=(1, 1, 1),
trainable=False))
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4b',
subsample=(1, 1, 1),
trainable=False))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool4'))
# 5th layer group
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5a',
subsample=(1, 1, 1),
trainable=False))
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5b',
subsample=(1, 1, 1),
trainable=False))
model.add(ZeroPadding3D(padding=(0, 1, 1), name='zeropadding'))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool5'))
model.add(Flatten(name='flatten'))
# FC layers group
model.add(Dense(4096, activation='relu', name='fc6', trainable=False))
model.add(Dropout(.5, name='do1'))
model.add(Dense(4096, activation='relu', name='fc7'))
model.add(Dropout(.5, name='do2'))
model.add(Dense(487, activation='softmax', name='fc8'))
# Load weights
model.load_weights('data/models/c3d-sports1M_weights.h5')
for _ in range(4):
model.pop_layer()
if summary:
print(model.summary())
return model
def get_int_model(model, layer, backend='tf'):
if backend == 'tf':
input_shape = (16, 112, 112, 3) # l, h, w, c
else:
input_shape = (3, 16, 112, 112) # c, l, h, w
int_model = Sequential()
int_model.add(
Convolution3D(64,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv1',
input_shape=input_shape,
weights=model.layers[0].get_weights()))
if layer == 'conv1':
return int_model
int_model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
border_mode='valid',
name='pool1'))
if layer == 'pool1':
return int_model
# 2nd layer group
int_model.add(
Convolution3D(128,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv2',
weights=model.layers[2].get_weights()))
if layer == 'conv2':
return int_model
int_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool2'))
if layer == 'pool2':
return int_model
# 3rd layer group
int_model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3a',
weights=model.layers[4].get_weights()))
if layer == 'conv3a':
return int_model
int_model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3b',
weights=model.layers[5].get_weights()))
if layer == 'conv3b':
return int_model
int_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool3'))
if layer == 'pool3':
return int_model
# 4th layer group
int_model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4a',
weights=model.layers[7].get_weights()))
if layer == 'conv4a':
return int_model
int_model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4b',
weights=model.layers[8].get_weights()))
if layer == 'conv4b':
return int_model
int_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool4'))
if layer == 'pool4':
return int_model
# 5th layer group
int_model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5a',
weights=model.layers[10].get_weights()))
if layer == 'conv5a':
return int_model
int_model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5b',
weights=model.layers[11].get_weights()))
if layer == 'conv5b':
return int_model
int_model.add(ZeroPadding3D(padding=(0, 1, 1), name='zeropad'))
int_model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool5'))
if layer == 'pool5':
return int_model
int_model.add(Flatten())
# FC layers group
int_model.add(
Dense(4096,
activation='relu',
name='fc6',
weights=model.layers[15].get_weights()))
if layer == 'fc6':
return int_model
int_model.add(Dropout(.5))
int_model.add(
Dense(4096,
activation='relu',
name='fc7',
weights=model.layers[17].get_weights()))
if layer == 'fc7':
return int_model
int_model.add(Dropout(.5))
int_model.add(
Dense(487,
activation='softmax',
name='fc8',
weights=model.layers[19].get_weights()))
if layer == 'fc8':
return int_model
return None
def get_model(self):
model = Sequential()
# 1st layer group
model.add(
Conv3D(64,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv1',
subsample=(1, 1, 1),
input_shape=self.input_shape))
model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
border_mode='valid',
name='pool1'))
# 2nd layer group
model.add(
Conv3D(128,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv2',
subsample=(1, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool2'))
# 3rd layer group
model.add(
Conv3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3a',
subsample=(1, 1, 1)))
model.add(
Conv3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3b',
subsample=(1, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool3'))
# 4th layer group
model.add(
Conv3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4a',
subsample=(1, 1, 1)))
model.add(
Conv3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4b',
subsample=(1, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool4'))
# 5th layer group
model.add(
Conv3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5a',
subsample=(1, 1, 1)))
model.add(
Conv3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5b',
subsample=(1, 1, 1)))
model.add(ZeroPadding3D(padding=(0, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool5'))
model.add(Flatten())
# FC layers group
model.add(Dense(4096, activation='relu', name='fc6'))
model.add(Dropout(0.5))
model.add(Dense(4096, activation='relu', name='fc7'))
model.add(Dropout(0.5))
model.add(Dense(self.output_shape, activation='linear'))
return model
# level of convolution to perform at each layer (CONV x CONV)
#nb_conv = [5,5]
# Pre-processing
train_set = train_set.astype('float64')
train_set -= np.mean(train_set)
train_set /=np.max(train_set)
# In[15]:
# Define model
model = Sequential()
model.add(Convolution3D(8,nb_depth=2, nb_row=2, nb_col=2,border_mode='full',input_shape=(1,16,16,16),activation='relu'))
model.add(MaxPooling3D(pool_size=(2, 2, 2)))
model.add(Dropout(0.25))
model.add(Convolution3D(16,nb_depth=2, nb_row=2, nb_col=2,border_mode='full',activation='relu'))
model.add(MaxPooling3D(pool_size=(2, 2, 2)))
model.add(Dropout(0.25))
#model.add(Convolution3D(64,nb_depth=3, nb_row=3, nb_col=3,border_mode='full', activation='relu'))
#model.add(MaxPooling3D(pool_size=(2,2,2)))
#model.add(Dropout(0.5))
#model.add(Convolution3D(128,nb_depth=3, nb_row=3, nb_col=3,border_mode='full', activation='relu'))
#model.add(MaxPooling3D(pool_size=(2, 2, 2)))
#model.add(Dropout(0.5))
model.add(Flatten())
train_set /= np.max(train_set)
#train_set /= 255
#Model
model = Sequential()
model.add(
Convolution3D(filters[0],
kernel_dim1=conv[0],
kernel_dim2=conv[0],
kernel_dim3=conv[0],
input_shape=(1, img_rows, img_cols, patch_size),
activation='relu'))
model.add(MaxPooling3D(pool_size=(pool[0], pool[0], pool[0])))
model.add(Dropout(0.5))
model.add(Flatten())
model.add(Dense(128, init='normal', activation='relu'))
model.add(Dropout(0.5))
model.add(Dense(classes, init='normal'))
model.add(Activation('softmax'))
model.compile(loss='categorical_crossentropy',
optimizer='RMSprop',
def c3d_model(summary=False):
""" Return the Keras model of the network
"""
main_input = Input(shape=(32, 112, 112, 3), name="main_input")
# 1st layer group
x = Conv3D(
64,
kernel_size=(3, 3, 3),
activation="relu",
padding="same",
name="conv1",
strides=(1, 1, 1),
)(main_input)
x = MaxPooling3D(
pool_size=(1, 2, 2), strides=(1, 2, 2), padding="valid", name="pool1"
)(x)
# 2nd layer group
x = Conv3D(
128,
kernel_size=(3, 3, 3),
activation="relu",
padding="same",
name="conv2",
strides=(1, 1, 1),
)(x)
x = MaxPooling3D(
pool_size=(2, 2, 2), strides=(2, 2, 2), padding="valid", name="pool2"
)(x)
# 3rd layer group
x = Conv3D(
256,
kernel_size=(3, 3, 3),
activation="relu",
padding="same",
name="conv3a",
strides=(1, 1, 1),
)(x)
x = Conv3D(
256,
kernel_size=(3, 3, 3),
activation="relu",
padding="same",
name="conv3b",
strides=(1, 1, 1),
)(x)
x = MaxPooling3D(
pool_size=(2, 2, 2), strides=(2, 2, 2), padding="valid", name="pool3"
)(x)
# 4th layer group
x = Conv3D(
512,
kernel_size=(3, 3, 3),
activation="relu",
padding="same",
name="conv4a",
strides=(1, 1, 1),
)(x)
x = Conv3D(
512,
kernel_size=(3, 3, 3),
activation="relu",
padding="same",
name="conv4b",
strides=(1, 1, 1),
)(x)
x = MaxPooling3D(
pool_size=(2, 2, 2), strides=(2, 2, 2), padding="valid", name="pool4"
)(x)
# 5th layer group
x = Conv3D(
512,
kernel_size=(3, 3, 3),
activation="relu",
padding="same",
name="conv5a",
strides=(1, 1, 1),
)(x)
x = Conv3D(
512,
kernel_size=(3, 3, 3),
activation="relu",
padding="same",
name="conv5b",
strides=(1, 1, 1),
)(x)
x = ZeroPadding3D(padding=(0, 1, 1))(x)
x = MaxPooling3D(
pool_size=(2, 2, 2), strides=(2, 2, 2), padding="valid", name="pool5"
)(x)
x = Flatten()(x)
# FC layers group
x = Dense(2048, activation="relu", name="fc6")(x)
x = Dropout(0.5)(x)
x = Dense(2048, activation="relu", name="fc7")(x)
x = Dropout(0.5)(x)
predictions = Dense(2, activation="softmax", name="fc8")(x)
model = Model(inputs=main_input, outputs=predictions)
if summary:
print(model.summary())
return model
Y_train = np_utils.to_categorical(Y_train, nb_classes)
Y_test = np_utils.to_categorical(Y_test, nb_classes)
# number of convolutional filters to use at each layer
nb_filters = [16, 32]
# level of pooling to perform at each layer (POOL x POOL)
nb_pool = [3, 3]
# level of convolution to perform at each layer (CONV x CONV)
nb_conv = [7, 3]
model = Sequential()
model.add(Convolution3D(nb_filters[0],nb_depth=nb_conv[0], nb_row=nb_conv[0], nb_col=nb_conv[0], border_mode='full',
input_shape=(1, patch_size, patch_size, patch_size), activation='relu'))
model.add(MaxPooling3D(pool_size=(nb_pool[0], nb_pool[0], nb_pool[0])))
model.add(Dropout(0.5))
model.add(Convolution3D(nb_filters[1],nb_depth=nb_conv[1], nb_row=nb_conv[1], nb_col=nb_conv[1], border_mode='full',
activation='relu'))
model.add(MaxPooling3D(pool_size=(nb_pool[1], nb_pool[1], nb_pool[1])))
model.add(Flatten())
model.add(Dropout(0.5))
model.add(Dense(16, init='normal', activation='relu'))
model.add(Dense(nb_classes, init='normal'))
model.add(Activation('softmax'))
sgd = RMSprop(lr=0.01, decay=1e-6, momentum=0.9, nesterov=True)
model.compile(loss='categorical_crossentropy', optimizer=sgd)
model.fit(X_train, Y_train, batch_size=batch_size, nb_epoch=nb_epoch, show_accuracy=True, verbose=2,
validation_data=(X_test, Y_test))
def conv3d_model():
input_shape = (32, 112, 112, 3)
weight_decay = 0.005
nb_classes = 2
inputs = Input(input_shape)
x = Conv3D(
64,
(3, 3, 3),
strides=(1, 1, 1),
padding="same",
activation="relu",
kernel_regularizer=l2(weight_decay),
)(inputs)
x = MaxPooling3D((2, 2, 1), strides=(2, 2, 1), padding="same")(x)
x = Conv3D(
128,
(3, 3, 3),
strides=(1, 1, 1),
padding="same",
activation="relu",
kernel_regularizer=l2(weight_decay),
)(x)
x = MaxPooling3D((2, 2, 2), strides=(2, 2, 2), padding="same")(x)
x = Conv3D(
128,
(3, 3, 3),
strides=(1, 1, 1),
padding="same",
activation="relu",
kernel_regularizer=l2(weight_decay),
)(x)
x = MaxPooling3D((2, 2, 2), strides=(2, 2, 2), padding="same")(x)
x = Conv3D(
256,
(3, 3, 3),
strides=(1, 1, 1),
padding="same",
activation="relu",
kernel_regularizer=l2(weight_decay),
)(x)
x = MaxPooling3D((2, 2, 2), strides=(2, 2, 2), padding="same")(x)
x = Conv3D(
256,
(3, 3, 3),
strides=(1, 1, 1),
padding="same",
activation="relu",
kernel_regularizer=l2(weight_decay),
)(x)
x = MaxPooling3D((2, 2, 2), strides=(2, 2, 2), padding="same")(x)
x = Flatten()(x)
x = Dense(2048, activation="relu", kernel_regularizer=l2(weight_decay))(x)
x = Dropout(0.5)(x)
x = Dense(2048, activation="relu", kernel_regularizer=l2(weight_decay))(x)
x = Dropout(0.5)(x)
x = Dense(nb_classes, kernel_regularizer=l2(weight_decay))(x)
x = Activation("softmax")(x)
model = Model(inputs, x)
return model
filters_3D_1 = 0
kernel_1 = 0
kernel_2 = 0
#如果模型存在，加载已有模型
if (os.path.exists('model.h5')):
print('model is loading')
model = load_model('model.h5')
#否则使用代码里写的模型
else:
model = Sequential()
#第一层卷积层
model.add(Conv3D(filters_3D_1, (kernel_1, kernel_2)))
#第一层最大池化层
model.add(MaxPooling3D())
#第二层卷积层
model.add(Conv3D())
#第二层最大池化层
model.add(MaxPooling3D())
#第三层卷积层
model.add(Conv3D())
#第三层最大池化层
model.add(MaxPooling3D())
#第一层dropout层防止过拟合
model.add(Dropout())
#第一层LSTM层
model.add(LSTM())
#第二层LSTM层
model.add(LSTM())
#第二层dropout层防止过拟合
encoding='utf-8')
model = Sequential()
model.add(
Conv3D(filters=64,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding="same",
activation="relu",
data_format="channels_last",
input_shape=(16, 128, 128, 3)))
#model.add(BatchNormalization())
model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
padding="valid",
data_format=None))
model.add(
Conv3D(filters=128,
kernel_size=(3, 3, 3),
strides=(1, 1, 1),
padding="same",
activation="relu"))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
padding="valid",
data_format=None))
model.add(
from sklearn import preprocessing
model = Sequential()
#`channels_last` corresponds to inputs with shape `(batch, spatial_dim1, spatial_dim2, spatial_dim3, channels)`
strides = (1, 1, 1)
kernel_size = (3, 3, 3)
model.add(
Conv3D(32,
kernel_size,
strides=strides,
activation='relu',
padding='same',
input_shape=(32, 64, 96, 3)))
print(model.output_shape)
model.add(BatchNormalization())
model.add(MaxPooling3D(pool_size=(1, 2, 2)))
print(model.output_shape)
model.add(
Conv3D(64, kernel_size, strides=strides, activation='relu',
padding='same'))
print(model.output_shape)
model.add(BatchNormalization())
model.add(MaxPooling3D(pool_size=(1, 2, 2)))
print(model.output_shape)
model.add(
Conv3D(128,
kernel_size,
strides=strides,
activation='relu',
def unet_model():
inputs = Input(shape=(1, max_slices, img_size, img_size))
conv1 = Convolution3D(width,
3,
3,
3,
activation='relu',
border_mode='same')(inputs)
conv1 = BatchNormalization(axis=1)(conv1)
conv1 = Convolution3D(width * 2,
3,
3,
3,
activation='relu',
border_mode='same')(conv1)
conv1 = BatchNormalization(axis=1)(conv1)
pool1 = MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='same')(conv1)
conv2 = Convolution3D(width * 2,
3,
3,
3,
activation='relu',
border_mode='same')(pool1)
conv2 = BatchNormalization(axis=1)(conv2)
conv2 = Convolution3D(width * 4,
3,
3,
3,
activation='relu',
border_mode='same')(conv2)
conv2 = BatchNormalization(axis=1)(conv2)
pool2 = MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='same')(conv2)
conv3 = Convolution3D(width * 4,
3,
3,
3,
activation='relu',
border_mode='same')(pool2)
conv3 = BatchNormalization(axis=1)(conv3)
conv3 = Convolution3D(width * 8,
3,
3,
3,
activation='relu',
border_mode='same')(conv3)
conv3 = BatchNormalization(axis=1)(conv3)
pool3 = MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='same')(conv3)
conv4 = Convolution3D(width * 8,
3,
3,
3,
activation='relu',
border_mode='same')(pool3)
conv4 = BatchNormalization(axis=1)(conv4)
conv4 = Convolution3D(width * 8,
3,
3,
3,
activation='relu',
border_mode='same')(conv4)
conv4 = BatchNormalization(axis=1)(conv4)
conv4 = Convolution3D(width * 16,
3,
3,
3,
activation='relu',
border_mode='same')(conv4)
conv4 = BatchNormalization(axis=1)(conv4)
up5 = merge([UpSampling3D(size=(2, 2, 2))(conv4), conv3],
mode='concat',
concat_axis=1)
conv5 = SpatialDropout3D(0.2)(up5)
conv5 = Convolution3D(width * 8,
3,
3,
3,
activation='relu',
border_mode='same')(conv5)
#conv5 = BatchNormalization()(conv5)
conv5 = Convolution3D(width * 8,
3,
3,
3,
activation='relu',
border_mode='same')(conv5)
#conv5 = BatchNormalization()(conv5)
up6 = merge([UpSampling3D(size=(2, 2, 2))(conv5), conv2],
mode='concat',
concat_axis=1)
conv6 = SpatialDropout3D(0.2)(up6)
conv6 = Convolution3D(width * 4,
3,
3,
3,
activation='relu',
border_mode='same')(conv6)
#conv6 = BatchNormalization()(conv6)
conv6 = Convolution3D(width * 4,
3,
3,
3,
activation='relu',
border_mode='same')(conv6)
#conv6 = BatchNormalization()(conv6)
up7 = merge([UpSampling3D(size=(2, 2, 2))(conv6), conv1],
mode='concat',
concat_axis=1)
conv7 = SpatialDropout3D(0.2)(up7)
conv7 = Convolution3D(width * 2,
3,
3,
3,
activation='relu',
border_mode='same')(conv7)
#conv7 = BatchNormalization()(conv7)
conv7 = Convolution3D(width * 2,
3,
3,
3,
activation='relu',
border_mode='same')(conv7)
#conv7 = BatchNormalization()(conv7)
conv8 = Convolution3D(1, 1, 1, 1, activation='sigmoid')(conv7)
model = Model(input=inputs, output=conv8)
model.compile(optimizer=Adam(lr=1e-5),
loss=dice_coef_loss,
metrics=[dice_coef])
return model
def get_model(summary=False):
model = Sequential()
# Layer 01
model.add(
Convolution3D(64,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv1',
subsample=(1, 1, 1),
input_shape=(3, 16, 112, 112),
trainable=False))
model.add(
MaxPooling3D(pool_size=(1, 2, 2),
strides=(1, 2, 2),
border_mode='valid',
name='pool1'))
# layer02
model.add(
Convolution3D(128,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv2',
subsample=(1, 1, 1),
trainable=False))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool2'))
# 3rd layer group
model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3a',
subsample=(1, 1, 1),
trainable=False))
model.add(
Convolution3D(256,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv3b',
subsample=(1, 1, 1),
trainable=False))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool3'))
# 4th layer group
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4a',
subsample=(1, 1, 1),
trainable=False))
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv4b',
subsample=(1, 1, 1),
trainable=False))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool4'))
# 5th layer group
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5a',
subsample=(1, 1, 1),
trainable=False))
model.add(
Convolution3D(512,
3,
3,
3,
activation='relu',
border_mode='same',
name='conv5b',
subsample=(1, 1, 1),
trainable=False))
model.add(ZeroPadding3D(padding=(0, 1, 1)))
model.add(
MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2),
border_mode='valid',
name='pool5'))
model.add(Flatten())
model.add(Dense(4096, activation='relu', name='fc6'))
model.add(Dropout(0.5))
model.add(Dense(4096, activation='relu', name='fc7'))
model.add(Dropout(0.5))
model.add(Dense(487, activation='softmax', name='fc8'))
if summary:
print(model.summary())
return model
def build(input_shape, num_outputs, block_fn, repetitions, reg_factor):
"""Instantiate a vanilla ResNet3D keras model.
# Arguments
input_shape: Tuple of input shape in the format
(conv_dim1, conv_dim2, conv_dim3, channels) if dim_ordering='tf'
(filter, conv_dim1, conv_dim2, conv_dim3) if dim_ordering='th'
num_outputs: The number of outputs at the final softmax layer
block_fn: Unit block to use {'basic_block', 'bottlenack_block'}
repetitions: Repetitions of unit blocks
# Returns
model: a 3D ResNet model that takes a 5D tensor (volumetric images
in batch) as input and returns a 1D vector (prediction) as output.
"""
_handle_data_format()
if len(input_shape) != 4:
raise ValueError("Input shape should be a tuple "
"(conv_dim1, conv_dim2, conv_dim3, channels) "
"for tensorflow as backend or "
"(channels, conv_dim1, conv_dim2, conv_dim3) "
"for theano as backend")
block_fn = _get_block(block_fn)
input = Input(shape=input_shape)
# first conv
conv1 = _conv_bn_relu3D(filters=64,
kernel_size=(7, 7, 7),
strides=(2, 2, 2),
kernel_regularizer=l2(reg_factor))(input)
pool1 = MaxPooling3D(pool_size=(3, 3, 3),
strides=(2, 2, 2),
padding="same")(conv1)
# repeat blocks
block = pool1
filters = 64
for i, r in enumerate(repetitions):
block = _residual_block3d(block_fn,
filters=filters,
kernel_regularizer=l2(reg_factor),
repetitions=r,
is_first_layer=(i == 0))(block)
filters *= 2
# last activation
block_output = _bn_relu(block)
# average poll and classification
pool2 = AveragePooling3D(pool_size=(block._keras_shape[DEPTH_AXIS],
block._keras_shape[HEIGHT_AXIS],
block._keras_shape[WIDTH_AXIS]),
strides=(1, 1, 1))(block_output)
flatten1 = Flatten()(pool2)
if num_outputs > 1:
dense = Dense(units=num_outputs,
kernel_initializer="he_normal",
activation="softmax",
kernel_regularizer=l2(reg_factor))(flatten1)
else:
dense = Dense(units=num_outputs,
kernel_initializer="he_normal",
activation="sigmoid",
kernel_regularizer=l2(reg_factor))(flatten1)
model = Model(inputs=input, outputs=dense)
return model
def __create_dense_net(nb_layers,
growth_rate=12,
nb_filter=64,
bottleneck=True,
reduction=0.1,
dropout_rate=None,
subsample_initial_block=True):
inputs = Input(shape=(280, 280, 16, 1))
print("0 :inputs shape:", inputs.shape)
# 设定每个denseblock中convblock的数量:nb_layers = [3,3,3]
concat_axis = -1 # 设定concat的轴（即叠加的轴）
bn_axis = -1 # 设定BN的轴（即叠加的轴）
nb_dense_block = nb_layers.__len__(
) # nb_dense_block ：denseblock的数量，需要和nb_layers对应
final_nb_layer = nb_layers[-1]
compression = 1.0 - reduction # denseblock的通道衰减率，即实际输出通道数=原输出通道数x通道衰减率
# Initial convolution =======================================================================================
if subsample_initial_block:
initial_kernel = (7, 7, 7)
initial_strides = (2, 2, 1)
else:
initial_kernel = (3, 3, 3)
initial_strides = (1, 1, 1)
x = Conv3D(nb_filter,
initial_kernel,
kernel_initializer='he_normal',
padding='same',
strides=initial_strides,
use_bias=False)(inputs)
if subsample_initial_block:
x = BatchNormalization(axis=bn_axis, epsilon=1.1e-5)(x)
x = Activation('relu')(x)
x = MaxPooling3D((3, 3, 3), strides=(2, 2, 1), padding='same')(x)
print("0 :Initial conv shape:", x.shape)
# Initial convolution finished ================================================================================
# Add dense blocks start ==================================================================================
for block_idx in range(nb_dense_block - 1):
x, nb_filter = __dense_block(x,
nb_layers[block_idx],
nb_filter,
growth_rate,
concat_axis=concat_axis,
bn_axis=bn_axis,
bottleneck=bottleneck,
dropout_rate=dropout_rate,
grow_nb_filters=True)
print(block_idx + 1, ":dense_block shape:", x.shape)
x = __transition_block(x,
nb_filter,
compression=compression,
concat_axis=concat_axis,
bias_allow=False)
print(block_idx + 1, ":transition_block shape:", x.shape)
nb_filter = int(nb_filter * compression)
# Add dense blocks finish ==================================================================================
# The last dense_block does not have a transition_block
x, nb_filter = __dense_block(x,
final_nb_layer,
nb_filter,
growth_rate,
concat_axis=concat_axis,
bn_axis=bn_axis,
bottleneck=bottleneck,
dropout_rate=dropout_rate,
grow_nb_filters=True)
print(nb_dense_block, ":dense_block shape:", x.shape)
x = BatchNormalization(axis=bn_axis, epsilon=1.1e-5)(x)
x = Activation('relu')(x)
out = GlobalAveragePooling3D(data_format='channels_last')(x)
print("GApooling shape:", out.shape)
out_drop = Dropout(rate=0.3)(out)
out = Dense(1, name='fc1')(out_drop)
print("out shape:", out.shape)
output = Activation(activation='sigmoid')(out)
model = Model(input=inputs, output=output)
#mean_squared_logarithmic_error or binary_crossentropy
model.compile(optimizer=SGD(lr=1e-6, momentum=0.9),
loss=EuiLoss,
metrics=[y_t, y_pre, Acc])
return model
def c3d(input_shape, nb_classes):
"""
Build a 3D convolutional network, based loosely on C3D.
https://arxiv.org/pdf/1412.0767.pdf
"""
# 8.27加入一些正则项
# Model.
weight_decay = 0.0001 # 0.0005 # 0.0001 #0.001
model = Sequential()
# 10.2 divided fliters with two
model.add(
Conv3D(8, (3, 3, 3),
padding='same',
input_shape=input_shape,
activation='relu')
) # 9.20 change kernel number from 32 to 8 # 10.2 change same to valid; fliter size 8 to 4
#model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
model.add(Conv3D(
8, (3, 3, 3), padding='same',
activation='relu')) # 8.31加深层数 #9.20 change kernel number from 32 to 8
model.add(BatchNormalization()) # 10.2 remove
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
model.add(Conv3D(16, (3, 3, 3), padding='same', activation='relu'))
model.add(Conv3D(16, (3, 3, 3), padding='same', activation='relu'))
model.add(BatchNormalization()) # 10.2 remove
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
# 9.17 去掉卷积层的正则约束
model.add(Conv3D(32, (3, 3, 3), padding='same', activation='relu')
) # 8.31加深层数 #9.20 change kernel number from 64 to 16
model.add(Conv3D(32, (3, 3, 3), padding='same',
activation='relu')) # 8.29加入
model.add(BatchNormalization()) # 9.20加入，试图加快收敛
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
model.add(Conv3D(64, (3, 3, 3), padding='same', activation='relu'))
model.add(Conv3D(
64,
(3, 3, 3),
padding='same',
activation='relu',
)) # 128 to 32
model.add(BatchNormalization()) # 9.20加入，试图加快收敛 # 10.2 remove
model.add(MaxPooling3D(pool_size=(2, 2, 2), strides=(2, 2, 2)))
#model.add(Conv3D(256, (2, 2, 2), activation='relu',kernel_regularizer=regularizers.l2(weight_decay)))
# 9.18为以下四个卷积层加入正则化方法
model.add(
Conv3D(128, (3, 3, 3),
padding='same',
activation='relu',
kernel_regularizer=regularizers.l2(
weight_decay))) # 9.10 8.31修改为3，3，3卷积核
#model.add(Conv3D(128, (3, 3, 3), padding='same', activation='relu',kernel_regularizer=regularizers.l2(weight_decay))) # 256 to 64\
model.add(MaxPooling3D(pool_size=(2, 2, 2),
strides=(2, 2, 2))) # 9.10 加入最大池化和512个卷积核
#model.add(Conv3D(256, (3, 3, 3), padding='same', activation='relu',kernel_regularizer=regularizers.l2(weight_decay))) # 512 to 128
#model.add(Conv3D(256, (3, 3, 3), padding='same', activation='relu',kernel_regularizer=regularizers.l2(weight_decay))) # 512 to 128
model.add(BatchNormalization()) # 9.20加入，试图加快收敛
model.add(Flatten())
#model.add(GlobalAveragePooling3D())
#model.add(Dense(1024)) # add 10.17
model.add(Dropout(0.5))
#model.add(Dense(512, kernel_regularizer=regularizers.l2(weight_decay))) #1024
model.add(Dense(512))
#model.add(Dropout(0.5))
#model.add(Dense(nb_classes, activation='softmax',kernel_regularizer=regularizers.l2(0.0001)))
model.add(Dense(nb_classes, activation='softmax'))
return model
