def vgg_face(weights_path=None):
img = Input(shape=(3, 224, 224))
pad1_1 = ZeroPadding2D(padding=(1, 1))(img)
conv1_1 = Convolution2D(64, 3, 3, activation='relu',
name='conv1_1')(pad1_1)
pad1_2 = ZeroPadding2D(padding=(1, 1))(conv1_1)
conv1_2 = Convolution2D(64, 3, 3, activation='relu',
name='conv1_2')(pad1_2)
pool1 = MaxPooling2D((2, 2), strides=(2, 2))(conv1_2)
pad2_1 = ZeroPadding2D((1, 1))(pool1)
conv2_1 = Convolution2D(128, 3, 3, activation='relu',
name='conv2_1')(pad2_1)
pad2_2 = ZeroPadding2D((1, 1))(conv2_1)
conv2_2 = Convolution2D(128, 3, 3, activation='relu',
name='conv2_2')(pad2_2)
pool2 = MaxPooling2D((2, 2), strides=(2, 2))(conv2_2)
pad3_1 = ZeroPadding2D((1, 1))(pool2)
conv3_1 = Convolution2D(256, 3, 3, activation='relu',
name='conv3_1')(pad3_1)
pad3_2 = ZeroPadding2D((1, 1))(conv3_1)
conv3_2 = Convolution2D(256, 3, 3, activation='relu',
name='conv3_2')(pad3_2)
pad3_3 = ZeroPadding2D((1, 1))(conv3_2)
conv3_3 = Convolution2D(256, 3, 3, activation='relu',
name='conv3_3')(pad3_3)
pool3 = MaxPooling2D((2, 2), strides=(2, 2))(conv3_3)
pad4_1 = ZeroPadding2D((1, 1))(pool3)
conv4_1 = Convolution2D(512, 3, 3, activation='relu',
name='conv4_1')(pad4_1)
pad4_2 = ZeroPadding2D((1, 1))(conv4_1)
conv4_2 = Convolution2D(512, 3, 3, activation='relu',
name='conv4_2')(pad4_2)
pad4_3 = ZeroPadding2D((1, 1))(conv4_2)
conv4_3 = Convolution2D(512, 3, 3, activation='relu',
name='conv4_3')(pad4_3)
pool4 = MaxPooling2D((2, 2), strides=(2, 2))(conv4_3)
pad5_1 = ZeroPadding2D((1, 1))(pool4)
conv5_1 = Convolution2D(512, 3, 3, activation='relu',
name='conv5_1')(pad5_1)
pad5_2 = ZeroPadding2D((1, 1))(conv5_1)
conv5_2 = Convolution2D(512, 3, 3, activation='relu',
name='conv5_2')(pad5_2)
pad5_3 = ZeroPadding2D((1, 1))(conv5_2)
conv5_3 = Convolution2D(512, 3, 3, activation='relu',
name='conv5_3')(pad5_3)
pool5 = MaxPooling2D((2, 2), strides=(2, 2))(conv5_3)
flat = Flatten()(pool5)
fc6 = Dense(4096, activation='relu', name='fc6')(flat)
fc6_drop = Dropout(0.5)(fc6)
fc7 = Dense(4096, activation='relu', name='fc7')(fc6_drop)
fc7_drop = Dropout(0.5)(fc7)
out = Dense(2622, activation='softmax', name='fc8')(fc7_drop)
model = Model(input=img, output=out)
if weights_path:
model.load_weights(weights_path)
return model
def cnn_model():
branch_0 = Sequential()
branch_1 = Sequential()
model0 = Sequential()
model = Sequential()
# ********************************************** 48*48
model0.add(
Convolution2D(32,
3,
3,
border_mode='same',
init='he_normal',
input_shape=(IMG_SIZE, IMG_SIZE, 3)))
model0.add(BatchNormalization(epsilon=1e-06, axis=3))
model0.add(Activation('relu'))
model0.add(Convolution2D(48, 7, 1, border_mode='same', init='he_normal'))
model0.add(BatchNormalization(epsilon=1e-06, axis=3))
model0.add(Activation('relu'))
model0.add(Convolution2D(48, 1, 7, border_mode='same', init='he_normal'))
model0.add(BatchNormalization(epsilon=1e-06, axis=3))
model0.add(Activation('relu'))
model0.add(MaxPooling2D(pool_size=(2, 2)))
model0.add(Dropout(0.2))
# ****************************************** 24*24
branch_0.add(model0)
branch_1.add(model0)
branch_0.add(Convolution2D(64, 3, 1, border_mode='same', init='he_normal'))
branch_0.add(BatchNormalization(epsilon=1e-06, axis=3))
branch_0.add(Activation('relu'))
branch_0.add(Convolution2D(64, 1, 3, border_mode='same', init='he_normal'))
branch_0.add(BatchNormalization(epsilon=1e-06, axis=3))
branch_0.add(Activation('relu'))
branch_1.add(Convolution2D(64, 1, 7, border_mode='same', init='he_normal'))
branch_1.add(BatchNormalization(epsilon=1e-06, axis=3))
branch_1.add(Activation('relu'))
branch_1.add(Convolution2D(64, 7, 1, border_mode='same', init='he_normal'))
branch_1.add(BatchNormalization(epsilon=1e-06, axis=3))
branch_1.add(Activation('relu'))
model.add(Merge([branch_0, branch_1], mode='concat', concat_axis=-1))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Dropout(0.2))
# ******************************************* 12*12
model.add(Convolution2D(128, 3, 3, border_mode='same', init='he_normal'))
model.add(BatchNormalization(epsilon=1e-06, axis=3))
model.add(Activation('relu'))
model.add(Convolution2D(256, 3, 3, border_mode='same',
init='he_normal')) # 之前是256个滤波器
model.add(BatchNormalization(epsilon=1e-06, axis=3))
model.add(Activation('relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Dropout(0.3))
# *************************************** 6*6
model.add(Flatten())
model.add(Dense(256, init='he_normal'))
model.add(BatchNormalization())
model.add(Activation('relu'))
model.add(Dropout(0.4))
model.add(Dense(NUM_CLASSES, activation='softmax', init='he_normal'))
return model
def conv_2d(kernels, kernel_size):
return Convolution2D(kernels,
kernel_size,
kernel_size,
init="he_uniform",
border_mode="same")
# img_types = ["flair", "FA", "anatomica"]
# exp1
img_types = ["FA", "anatomica"]
# prepare input for the
input_shape_2d = (inp_dim_2d, inp_dim_2d, len(img_types))
input_shape_3d = (inp_dim_3d, inp_dim_3d, inp_dim_3d, len(img_types))
## paralel NN, x
model_x = Sequential()
print("Input shape to the 2d networks:", input_shape_2d)
model_x.add(
Convolution2D(nb_filters,
kernel_size_2d[0],
kernel_size_2d[1],
border_mode='valid',
input_shape=input_shape_2d))
model_x.add(Activation('relu'))
print("Output shape of 1st convolution (2d):", model_x.output_shape)
model_x.add(
Convolution2D(nb_filters,
kernel_size_2d[0],
kernel_size_2d[1],
border_mode='valid',
input_shape=input_shape_2d))
model_x.add(Activation('relu'))
print("Output shape of 2nd convolution (2d):", model_x.output_shape)
model_x.add(Convolution2D(nb_filters, kernel_size_2d[0], kernel_size_2d[1]))
model_x.add(Activation('relu'))
print("Output shape of 3rd convolution (2d):", model_x.output_shape)
def model(summary=True):
input_img = Input((64, 64, 3))
normalized_input = Lambda(lambda z: z / 255. - .5)(input_img)
conv = Convolution2D(8,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(normalized_input)
conv1 = Convolution2D(8,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(normalized_input)
conv2 = Convolution2D(8,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(conv1)
merge1 = merge([conv, conv2], mode='concat', concat_axis=3)
maxpool = MaxPooling2D((2, 2))(merge1)
dropout = Dropout(0.5)(maxpool)
conv = Convolution2D(16,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(dropout)
conv1 = Convolution2D(16,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(dropout)
conv2 = Convolution2D(16,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(conv1)
merge1 = merge([conv, conv2], mode='concat', concat_axis=3)
maxpool = MaxPooling2D((2, 2))(merge1)
dropout = Dropout(0.5)(maxpool)
conv = Convolution2D(32,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(dropout)
conv1 = Convolution2D(32,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(dropout)
conv2 = Convolution2D(32,
3,
3,
activation='relu',
init='glorot_uniform',
border_mode='same')(conv1)
merge1 = merge([conv, conv2], mode='concat', concat_axis=3)
maxpool = MaxPooling2D((2, 2))(merge1)
dropout = Dropout(0.5)(maxpool)
flatten = Flatten()(dropout)
dense = Dense(64,
activation='relu',
init='glorot_uniform',
W_regularizer=l2(0.01))(flatten)
dropout = Dropout(0.5)(dense)
out = Dense(1)(dropout)
#out = Dense(1)(flatten)
model = Model(input=input_img, output=out)
if summary:
model.summary()
return model
x, y = createFaceData.gen_data_for_classification(samp_f)
x_train, x_test, y_train, y_test = cross_validation.train_test_split(
x, y, test_size=.25)
inp_shape = x_train.shape[1:]
mini_batch = 1
no_epoch = 5
kern_size = 3
nb_filter = [6, 12]
model = Sequential()
# 6 filters
model.add(
Convolution2D(nb_filter[0], kern_size, kern_size, input_shape=inp_shape))
model.add(Activation('relu'))
model.add(MaxPooling2D(pool_size=(2, 2))) # downsample
model.add(Dropout(.25))
# 12 filters
model.add(Convolution2D(nb_filter[1], kern_size, kern_size))
model.add(Activation('relu'))
model.add(MaxPooling2D(pool_size=(2, 2))) # downsample
model.add(Dropout(.25))
# now flatten
model.add(Flatten())
model.add(Dense(100))
model.add(Activation('relu'))
model.add(Dropout(.25))
model.add(Dense(10))
def create_model(nb_classes, input_shape):
"""Create a VGG-16 like model."""
model = Sequential()
print("input_shape: %s" % str(input_shape))
# input_shape = (None, None, 3) # for fcn
model.add(
Convolution2D(32, (3, 3),
padding='same',
input_shape=input_shape,
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001)))
model.add(BatchNormalization())
model.add(Activation('relu'))
model.add(
Convolution2D(32, (3, 3),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001)))
model.add(BatchNormalization())
model.add(Activation('relu'))
model.add(
Convolution2D(32, (2, 2),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001),
strides=2))
model.add(
Convolution2D(64, (3, 3),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001)))
model.add(BatchNormalization())
model.add(Activation('relu'))
model.add(
Convolution2D(64, (3, 3),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001)))
model.add(BatchNormalization())
model.add(Activation('relu'))
model.add(
Convolution2D(64, (2, 2),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001),
strides=2))
model.add(
Convolution2D(64, (3, 3),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001)))
model.add(BatchNormalization())
model.add(Activation('relu'))
model.add(
Convolution2D(64, (2, 2),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001),
strides=2))
model.add(Convolution2D(512, (4, 4), padding='valid'))
model.add(BatchNormalization())
model.add(Activation('relu'))
model.add(Dropout(0.5))
model.add(
Convolution2D(512, (1, 1),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001)))
model.add(BatchNormalization())
model.add(Activation('relu'))
model.add(Dropout(0.5))
model.add(
Convolution2D(nb_classes, (1, 1),
padding='same',
kernel_initializer='he_uniform',
kernel_regularizer=l2(0.0001)))
model.add(BatchNormalization())
model.add(Activation('softmax'))
model.add(Flatten()) # Remove for FCN
return model
def create_model_descriptor():
""" Create model descriptor of VGG-Face classificator """
model = Sequential()
model.add(ZeroPadding2D((1, 1), input_shape=(224, 224, 3)))
model.add(Convolution2D(64, (3, 3), activation='relu'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(64, (3, 3), activation='relu'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(128, (3, 3), activation='relu'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(128, (3, 3), activation='relu'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(256, (3, 3), activation='relu'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(256, (3, 3), activation='relu'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(256, (3, 3), activation='relu'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, (3, 3), activation='relu'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, (3, 3), activation='relu'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, (3, 3), activation='relu'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, (3, 3), activation='relu'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, (3, 3), activation='relu'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, (3, 3), activation='relu'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(Convolution2D(4096, (7, 7), activation='relu'))
model.add(Dropout(0.5))
model.add(Convolution2D(4096, (1, 1), activation='relu'))
model.add(Dropout(0.5))
model.add(Convolution2D(2622, (1, 1)))
model.add(Flatten())
model.add(Activation('softmax'))
model.load_weights('vgg_face_weights.h5')
# create VGG-Face descriptor without the last layer
vgg_descriptor = Model(inputs=model.layers[0].input,
outputs=model.layers[-2].output)
return vgg_descriptor
def model_architecture(img_rows,img_cols,img_channels,nb_classes):
#function defining the architecture of defined CNN
model = Sequential()
model.add(Convolution2D(32, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True, input_shape=(img_channels,img_rows, img_cols)))
model.add(Convolution2D(32, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(Convolution2D(32, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(MaxPooling2D(pool_size=(2, 2), strides = (2,2)))
model.add(Convolution2D(64, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(Convolution2D(64, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(Convolution2D(64, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(MaxPooling2D(pool_size=(2, 2), strides = (2,2)))
model.add(Convolution2D(96, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(Convolution2D(96, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(Convolution2D(96, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(MaxPooling2D(pool_size=(2, 2), strides = (2,2)))
model.add(Convolution2D(128, 3, 3, activation='relu', border_mode='same',init='orthogonal', bias = True))
Dropout((0.5))
model.add(Convolution2D(512, 1, 1, activation='relu', border_mode='same',init='orthogonal', bias = True))
Dropout((0.5))
model.add(Convolution2D(2, 1, 1, activation='relu', border_mode='same',init='orthogonal', bias = True))
model.add(GlobalAveragePooling2D(dim_ordering='default'))
#model.add(Convolution2D(10,1,1, border_mode='same',init='orthogonal', bias = True))
#model.add(Dense(nb_classes))
model.add(Activation('softmax'))
# model.summary()
return model
Y_train2 = Y_train[20000:60000]
Y_train3 = np.concatenate((Y_train[0:20000], Y_train[40000:60000]))
XTRAIN = (X_train1, X_train2, X_train3)
YTRAIN = (Y_train1, Y_train2, Y_train3)
learning_rate_reduction = ReduceLROnPlateau(monitor='val_acc',
patience=3,
verbose=1,
factor=0.5,
min_lr=0.000001)
model = Sequential()
model.add(
Convolution2D(64,
kernel_size=(3, 3),
activation='relu',
input_shape=(28, 28, 1)))
model.add(Convolution2D(64, (3, 3), activation='relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(BatchNormalization())
model.add(Convolution2D(128, (3, 3), activation='relu'))
model.add(Convolution2D(128, (3, 3), activation='relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(BatchNormalization())
#model.add(Convolution2D(256, (3, 3), activation='relu'))
#model.add(MaxPooling2D(pool_size=(2,2)))
#model.add(BatchNormalization())
#model.add(Dropout(0.2))
model.add(Flatten())
model.add(Dense(256, activation='relu'))
#model.add(BatchNormalization())
from keras.layers import Convolution2D
from keras.layers import MaxPooling2D
from keras.layers import Flatten
from keras.layers import Dense
from keras.preprocessing.image import ImageDataGenerator
# As initialize a sequential constructor
classifier = Sequential()
# now the model will take as input arrays of shape (*, 64)
# and output arrays of shape (*, 32)
# after the first layer, you don't need to specify
# the size of the input anymore:
# Initialize the first layer
classifier.add(
Convolution2D(32, (3, 3), input_shape=(64, 64, 3), activation="relu"))
# Feature mapping reduce the unnessary pixel and remain essential pixel only
classifier.add(MaxPooling2D(pool_size=(2, 2)))
# Initialize the Second Layer
classifier.add(Convolution2D(32, (3, 3), activation="relu"))
# Feature mapping second layer
classifier.add(MaxPooling2D(pool_size=(2, 2)))
# Convert multi-diamention array into single array
classifier.add(Flatten())
# Initialize the third layer
classifier.add(Dense(activation='relu', units=128))
x = x[:10960]
y = y[:len(x)]
x = x.reshape((1096, 10, 3, 64, 64))
y = y.reshape((1096, 10, 6))
y = y.mean(axis=1)
X_train, Y_train, X_test, Y_test = set_para.preprocessing(x=x,
y=y,
split=True,
to_categorical=False)
# this model will encode an image into a vector.
vision_model = Sequential()
vision_model.add(
Convolution2D(64,
3,
3,
activation='relu',
border_mode='same',
input_shape=(3, img_rows, img_cols)))
vision_model.add(Convolution2D(64, 3, 3, activation='relu'))
vision_model.add(MaxPooling2D((2, 2)))
vision_model.add(
Convolution2D(128, 3, 3, activation='relu', border_mode='same'))
vision_model.add(Convolution2D(128, 3, 3, activation='relu'))
vision_model.add(MaxPooling2D((2, 2)))
vision_model.add(
Convolution2D(256, 3, 3, activation='relu', border_mode='same'))
vision_model.add(Convolution2D(256, 3, 3, activation='relu'))
vision_model.add(Convolution2D(256, 3, 3, activation='relu'))
vision_model.add(MaxPooling2D((2, 2)))
vision_model.add(Flatten())
import numpy as np
from keras import backend as K
from keras.callbacks import ModelCheckpoint, CSVLogger
from keras.layers import MaxPooling2D, UpSampling2D, Convolution2D, Input, merge, concatenate
from keras.layers.normalization import BatchNormalization
from keras.models import Model
from skimage.io import imsave
from data import load_train_data, load_test_data
# def get_fractalunet(f=16):
inputs = Input((size, size, 3))
conv1 = Convolution2D(f, 3, 3, activation='relu', border_mode='same')(inputs)
conv1 = BatchNormalization()(conv1)
conv1 = Convolution2D(f, 3, 3, activation='relu', border_mode='same')(conv1)
down1 = MaxPooling2D(pool_size=(2, 2))(conv1)
conv2 = BatchNormalization()(down1)
conv2 = Convolution2D(2 * f, 3, 3, activation='relu', border_mode='same')(conv2)
conv2 = BatchNormalization()(conv2)
conv2 = Convolution2D(2 * f, 3, 3, activation='relu', border_mode='same')(conv2)
down2 = MaxPooling2D(pool_size=(2, 2))(conv2)
conv3 = BatchNormalization()(down2)
conv3 = Convolution2D(4 * f, 3, 3, activation='relu', border_mode='same')(conv3)
conv3 = BatchNormalization()(conv3)
(X_train, y_train), (X_test, y_test) = mnist.load_data()
X_train = X_train.reshape(-1, 1, 28, 28)
X_test = X_test.reshape(-1, 1, 28, 28)
y_train = np_utils.to_categorical(y_train, 10)
y_test = np_utils.to_categorical(y_test, 10)
#创建CNN
model = Sequential()
#第一层卷积
model.add(
Convolution2D(
nb_filter=32,
nb_row=5,
nb_col=5,
border_mode='same', #padding method
input_shape=(
1, #channels
28,
28), #height,weight
))
model.add(Activation('relu'))
#第一层pooling
model.add(
MaxPooling2D(
pool_size=(2, 2),
strides=(2, 2),
border_mode='same' #padding method
))
# 第二层卷积
model.add(Convolution2D(64, 5, 5, border_mode='same'))
model.add(Activation('relu'))
X_train /= 255
X_test /= 255
print('X_train shape:', X_train.shape)
print(X_train.shape[0], 'train samples')
print(X_test.shape[0], 'test samples')
# convert class vectors to binary class matrices
Y_train = np_utils.to_categorical(y_train, nb_classes)[1:2]
Y_test = np_utils.to_categorical(y_test, nb_classes)[1:2]
discriminator = Sequential()
discriminator.add(
Convolution2D(nb_filters,
kernel_size[0],
kernel_size[1],
border_mode='valid',
input_shape=input_shape))
discriminator.add(Activation('relu'))
discriminator.add(Convolution2D(nb_filters, kernel_size[0], kernel_size[1]))
discriminator.add(Activation('relu'))
discriminator.add(MaxPooling2D(pool_size=pool_size))
discriminator.add(Dropout(0.25))
discriminator.add(Flatten())
discriminator.add(Dense(64))
discriminator.add(Activation('relu'))
discriminator.add(Dropout(0.5))
discriminator.add(Dense(nb_classes))
discriminator.add(Activation('sigmoid'))
discriminator.compile(loss='categorical_crossentropy',
if not os.path.exists(out_dir): os.mkdir(out_dir)
print('INFO - %s' % ('building regression model.'))
units = 512
reg_input = Input(shape=(num_reg, ), dtype='float32', name='reg_input')
x = Dense(units, activation='relu')(reg_input)
x = Dense(units, activation='relu')(x)
reg_output = Dense(units, activation='relu')(x)
print('INFO - %s' % ('building sequence model.'))
filters = [256, 128]
kernel_width = [19, 11]
seq_input = Input(shape=(4, seq_length, 1), dtype='float32', name='seq_input')
x = Convolution2D(nb_filter=filters[0],
nb_row=4,
nb_col=kernel_width[0],
subsample=(1, 1),
border_mode='valid')(seq_input)
x = MaxPooling2D(pool_size=(1, 4))(x)
x = Activation('relu')(x)
x = Convolution2D(nb_filter=filters[1],
nb_row=1,
nb_col=kernel_width[1],
subsample=(1, 1),
border_mode='valid')(x)
x = MaxPooling2D(pool_size=(1, 4))(x)
x = Activation('relu')(x)
seq_output = Flatten()(x)
# env.seed(123)
env = PoorMansGymEnv()
nb_actions = env.action_space.n
# Next, we build our model. We use the same model that was described by Mnih et al. (2015).
input_shape = (WINDOW_LENGTH, ) + INPUT_SHAPE
model = Sequential()
if K.image_dim_ordering() == 'tf':
# (width, height, channels)
model.add(Permute((2, 3, 1), input_shape=input_shape))
elif K.image_dim_ordering() == 'th':
# (channels, width, height)
model.add(Permute((1, 2, 3), input_shape=input_shape))
else:
raise RuntimeError('Unknown image_dim_ordering.')
model.add(Convolution2D(16, 8, 8, subsample=(4, 4)))
model.add(Activation('relu'))
model.add(Convolution2D(32, 4, 4, subsample=(2, 2)))
model.add(Activation('relu'))
model.add(Convolution2D(32, 3, 3, subsample=(1, 1)))
model.add(Activation('relu'))
model.add(Flatten())
model.add(Dense(256))
model.add(Activation('relu'))
model.add(Dense(nb_actions))
model.add(Activation('linear'))
print(model.summary())
# Finally, we configure and compile our agent. You can use every built-in Keras optimizer and
# even the metrics!
memory = SequentialMemory(limit=1000, window_length=WINDOW_LENGTH)
def save_bottleneck_features():
model = Sequential()
model.add(ZeroPadding2D((1, 1), input_shape=(3, img_width, img_height)))
model.add(Convolution2D(64, 3, 3, activation='relu', name='conv1_1'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(64, 3, 3, activation='relu', name='conv1_2'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(128, 3, 3, activation='relu', name='conv2_1'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(128, 3, 3, activation='relu', name='conv2_2'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(256, 3, 3, activation='relu', name='conv3_1'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(256, 3, 3, activation='relu', name='conv3_2'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(256, 3, 3, activation='relu', name='conv3_3'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, 3, 3, activation='relu', name='conv4_1'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, 3, 3, activation='relu', name='conv4_2'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, 3, 3, activation='relu', name='conv4_3'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, 3, 3, activation='relu', name='conv5_1'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, 3, 3, activation='relu', name='conv5_2'))
model.add(ZeroPadding2D((1, 1)))
model.add(Convolution2D(512, 3, 3, activation='relu', name='conv5_3'))
model.add(MaxPooling2D((2, 2), strides=(2, 2)))
assert os.path.exists(weight_path), 'Model weights not found (see "weights_path" variable in script).'
f = h5py.File(weight_path)
for k in range(f.attrs['nb_layers']):
if k >= len(model.layers):
break
g = f['layer_{}'.format(k)]
weights = [g['param_{}'.format(p)] for p in range(g.attrs['nb_params'])]
model.layers[k].set_weights(weights)
f.close()
print('Model loaded.')
X, y = load2d()
X_train, X_val, y_train, y_val = train_test_split(X, y, test_size=0.2, random_state=42)
X_flipped, y_flipped = flip_image(X_train, y_train)
X_train = np.vstack((X_train, X_flipped))
y_train = np.vstack((y_train, y_flipped))
X_train = gray_to_rgb(X_train)
X_val = gray_to_rgb(X_val)
bottleneck_features_train = model.predict(X_train)
np.save(open('bottleneck_features_train.npy', 'w'), bottleneck_features_train)
np.save(open('label_train.npy', 'w'), y_train)
bottleneck_features_validation = model.predict(X_val)
np.save(open('bottleneck_features_validation.npy', 'w'), bottleneck_features_validation)
np.save(open('label_validation.npy', 'w'), y_val)
def VGG_16(weights_path=None, dim_ordering='th'):
model = Sequential()
model.add(
ZeroPadding2D((1, 1),
dim_ordering=dim_ordering,
input_shape=(3, 224, 224)))
model.add(
Convolution2D(64, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(64, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(MaxPooling2D((2, 2), strides=(2, 2), dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(128, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(128, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(MaxPooling2D((2, 2), strides=(2, 2), dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(256, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(256, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(256, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(MaxPooling2D((2, 2), strides=(2, 2), dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(512, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(512, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(512, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(MaxPooling2D((2, 2), strides=(2, 2), dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(512, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(512, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(ZeroPadding2D((1, 1), dim_ordering=dim_ordering))
model.add(
Convolution2D(512, 3, 3, activation='relu', dim_ordering=dim_ordering))
model.add(MaxPooling2D((2, 2), strides=(2, 2), dim_ordering=dim_ordering))
model.add(Flatten())
model.add(Dense(4096, activation='relu'))
model.add(Dropout(0.5))
model.add(Dense(4096, activation='relu'))
model.add(Dropout(0.5))
model.add(Dense(1000, activation='softmax'))
return model
# -*- coding: utf-8 -*-
# 作者: xcl
# 时间: 2019/7/31 18:52
from keras.layers import merge, Convolution2D, MaxPooling2D, Input
input_img = Input(shape=(3, 256, 256))
tower_1 = Convolution2D(64, 1, 1, border_mode='same',
activation='relu')(input_img)
tower_1 = Convolution2D(64, 3, 3, border_mode='same',
activation='relu')(tower_1)
tower_2 = Convolution2D(64, 1, 1, border_mode='same',
activation='relu')(input_img)
tower_2 = Convolution2D(64, 5, 5, border_mode='same',
activation='relu')(tower_2)
tower_3 = MaxPooling2D((3, 3), strides=(1, 1), border_mode='same')(input_img)
tower_3 = Convolution2D(64, 1, 1, border_mode='same',
activation='relu')(tower_3)
output = merge([tower_1, tower_2, tower_3], mode='concat', concat_axis=1)
from keras.layers import merge, Convolution2D, Input
# input tensor for a 3-channel 256x256 image
x = Input(shape=(3, 256, 256))
# 3x3 conv with 3 output channels(same as input channels)
y = Convolution2D(3, 3, 3, border_mode='same')(x)
# this returns x + y.
def VGGFace(include_top=False,
weights='vggface',
input_tensor=None,
input_shape=None,
pooling='max',
classes=2622,
WEIGHTS_FILE='None'):
"""Instantiates the VGGFace architecture.
Optionally loads weights pre-trained
on VGGFace dataset. Note that when using TensorFlow,
for best performance you should set
`image_data_format="channels_last"` in your Keras config
at ~/.keras/keras.json.
The model and the weights are compatible with both
TensorFlow and Theano. The data format
convention used by the model is the one
specified in your Keras config file.
# Arguments
include_top: whether to include the 3 fully-connected
layers at the top of the network.
weights: one of `None` (random initialization)
or "imagenet" (pre-training on ImageNet).
input_tensor: optional Keras tensor (i.e. output of `layers.Input()`)
to use as image input for the model.
input_shape: optional shape tuple, only to be specified
if `include_top` is False (otherwise the input shape
has to be `(224, 224, 3)` (with `channels_last` data format)
or `(3, 224, 244)` (with `channels_first` data format).
It should have exactly 3 inputs channels,
and width and height should be no smaller than 48.
E.g. `(200, 200, 3)` would be one valid value.
pooling: Optional pooling mode for feature extraction
when `include_top` is `False`.
- `None` means that the output of the model will be
the 4D tensor output of the
last convolutional layer.
- `avg` means that global average pooling
will be applied to the output of the
last convolutional layer, and thus
the output of the model will be a 2D tensor.
- `max` means that global max pooling will
be applied.
classes: optional number of classes to classify images
into, only to be specified if `include_top` is True, and
if no `weights` argument is specified.
# Returns
A Keras model instance.
# Raises
ValueError: in case of invalid argument for `weights`,
or invalid input shape.
"""
if weights not in {'vggface', None}:
raise ValueError('The `weights` argument should be either '
'`None` (random initialization) or `vggface` '
'(pre-training on VGGFace Dataset).')
if weights == 'vggface' and include_top and classes != 2622:
raise ValueError(
'If using `weights` as vggface original with `include_top`'
' as true, `classes` should be 2622')
# Determine proper input shape
input_shape = _obtain_input_shape(input_shape,
default_size=224,
min_size=48,
data_format=K.image_data_format(),
include_top=include_top)
if input_tensor is None:
img_input = Input(shape=input_shape)
else:
if not K.is_keras_tensor(input_tensor):
img_input = Input(tensor=input_tensor, shape=input_shape)
else:
img_input = input_tensor
# Block 1
x = Convolution2D(64, (3, 3),
activation='relu',
padding='same',
name='conv1_1')(img_input)
x = Convolution2D(64, (3, 3),
activation='relu',
padding='same',
name='conv1_2')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='pool1')(x)
# Block 2
x = Convolution2D(128, (3, 3),
activation='relu',
padding='same',
name='conv2_1')(x)
x = Convolution2D(128, (3, 3),
activation='relu',
padding='same',
name='conv2_2')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='pool2')(x)
# Block 3
x = Convolution2D(256, (3, 3),
activation='relu',
padding='same',
name='conv3_1')(x)
x = Convolution2D(256, (3, 3),
activation='relu',
padding='same',
name='conv3_2')(x)
x = Convolution2D(256, (3, 3),
activation='relu',
padding='same',
name='conv3_3')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='pool3')(x)
# Block 4
x = Convolution2D(512, (3, 3),
activation='relu',
padding='same',
name='conv4_1')(x)
x = Convolution2D(512, (3, 3),
activation='relu',
padding='same',
name='conv4_2')(x)
x = Convolution2D(512, (3, 3),
activation='relu',
padding='same',
name='conv4_3')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='pool4')(x)
# Block 5
x = Convolution2D(512, (3, 3),
activation='relu',
padding='same',
name='conv5_1')(x)
x = Convolution2D(512, (3, 3),
activation='relu',
padding='same',
name='conv5_2')(x)
x = Convolution2D(512, (3, 3),
activation='relu',
padding='same',
name='conv5_3')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='pool5')(x)
if include_top:
# Classification block
x = Flatten(name='flatten')(x)
x = Dense(4096, name='fc6')(x)
x = Activation('relu', name='fc6/relu')(x)
x = Dense(4096, name='fc7')(x)
x = Activation('relu', name='fc7/relu')(x)
x = Dense(2622, name='fc8')(x)
x = Activation('relu', name='fc8/softmax')(x)
else:
if pooling == 'avg':
x = GlobalAveragePooling2D()(x)
elif pooling == 'max':
x = GlobalMaxPooling2D()(x)
# Ensure that the model takes into account
# any potential predecessors of `input_tensor`.
if input_tensor is not None:
inputs = get_source_inputs(input_tensor)
else:
inputs = img_input
# Create model.
model = Model(inputs, x, name='VGGFace') # load weights
if weights == 'vggface':
weights_path = 'weights/' + WEIGHTS_FILE
model.load_weights(weights_path, by_name=True)
if K.backend() == 'theano':
layer_utils.convert_all_kernels_in_model(model)
if K.image_data_format() == 'channels_first':
if include_top:
maxpool = model.get_layer(name='pool5')
shape = maxpool.output_shape[1:]
dense = model.get_layer(name='fc6')
layer_utils.convert_dense_weights_data_format(
dense, shape, 'channels_first')
if K.backend() == 'tensorflow':
warnings.warn('You are using the TensorFlow backend, yet you '
'are using the Theano '
'image data format convention '
'(`image_data_format="channels_first"`). '
'For best performance, set '
'`image_data_format="channels_last"` in '
'your Keras config '
'at ~/.keras/keras.json.')
return model
img_rows, img_cols = 28, 28
nb_filters = 32
pool_size = (2, 2)
kernel_size = (3, 3)
input_shape = (28, 28, 1)
learning_rate = 0.02
decay_rate = 5e-5
momentum = 0.9
denoise = Sequential()
denoise.add(
Convolution2D(20, 3, 3, border_mode='valid', input_shape=input_shape))
denoise.add(BatchNormalization(mode=2))
denoise.add(Activation('relu'))
denoise.add(UpSampling2D(size=(2, 2)))
denoise.add(Convolution2D(20, 3, 3, init='glorot_uniform'))
denoise.add(BatchNormalization(mode=2))
denoise.add(Activation('relu'))
denoise.add(Convolution2D(20, 3, 3, init='glorot_uniform'))
denoise.add(BatchNormalization(mode=2))
denoise.add(Activation('relu'))
denoise.add(MaxPooling2D(pool_size=(3, 3)))
denoise.add(Convolution2D(4, 3, 3, init='glorot_uniform'))
denoise.add(BatchNormalization(mode=2))
denoise.add(Activation('relu'))
denoise.add(Reshape((28, 28, 1)))
sgd = SGD(lr=learning_rate,
model = Sequential()
model.add(Reshape((input_shape), input_shape=(WINDOW_LENGTH,) + input_shape))
if K.image_dim_ordering() == 'tf':
print('tensorflow ordering')
# (width, height, channels)
model.add(Permute((2, 3, 1), input_shape=input_shape))
permute_shape = (MAP_X, MAP_Y, num_zones)
elif K.image_dim_ordering() == 'th':
# (channels, width, height)
model.add(Permute((1, 2, 3), input_shape=input_shape))
permute_shape = (num_zones, MAP_X, MAP_Y)
else:
raise RuntimeError('Unknown image_dim_ordering.')
model.add(Convolution2D(32, (8, 8), strides=(2, 2), padding='same'))
model.add(Activation('relu'))
model.add(Convolution2D(64, (4, 4), strides=(2, 2), padding='same'))
model.add(Activation('relu'))
model.add(Convolution2D(64, (3, 3), strides=(1, 1), padding='valid'))
model.add(Activation('relu'))
model.add(Flatten())
model.add(Dense(512))
model.add(Activation('relu'))
model.add(Dense(nb_actions))
model.add(Activation('linear'))
print(model.summary())
# Finally, we configure and compile our agent. You can use every built-in Keras optimizer and
# even the metrics!
memory = SequentialMemory(limit=1000000, window_length=1)
Y = np.zeros((batch_size, 14951)) # one hot
Y[np.arange(batch_size), Y_list] = 1
return X, Y
# In[30]:
# model
model = Sequential()
model.add(
Convolution2D(filters=16,
kernel_size=(5, 5),
padding='same',
input_shape=(128, 128, 3),
activation='relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(
Convolution2D(filters=32,
kernel_size=(5, 5),
padding='same',
activation='relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(
Convolution2D(filters=64,
def vgg16(include_top=True,
weights='imagenet',
input_tensor=None,
input_shape=None,
classes=1000,
weight_decay=5e-4):
"""Instantiate the VGG16 architecture,
optionally loading weights pre-trained
on ImageNet. Note that when using TensorFlow,
for best performance you should set
`image_dim_ordering="tf"` in your Keras config
at ~/.keras/keras.json.
The model and the weights are compatible with both
TensorFlow and Theano. The dimension ordering
convention used by the model is the one
specified in your Keras config file.
# Arguments
include_top: whether to include the 3 fully-connected
layers at the top of the network.
weights: one of `None` (random initialization)
or "imagenet" (pre-training on ImageNet).
input_tensor: optional Keras tensor (i.e. output of `layers.Input()`)
to use as image input for the model.
input_shape: optional shape tuple, only to be specified
if `include_top` is False (otherwise the input shape
has to be `(224, 224, 3)` (with `tf` dim ordering)
or `(3, 224, 244)` (with `th` dim ordering).
It should have exactly 3 inputs channels,
and width and height should be no smaller than 48.
E.g. `(200, 200, 3)` would be one valid value.
classes: optional number of classes to classify images
into, only to be specified if `include_top` is True, and
if no `weights` argument is specified.
# Returns
A Keras model instance.
"""
if weights not in {'imagenet', None}:
raise ValueError('The `weights` argument should be either '
'`None` (random initialization) or `imagenet` '
'(pre-training on ImageNet).')
if weights == 'imagenet' and include_top and classes != 1000:
raise ValueError('If using `weights` as imagenet with `include_top`'
' as true, `classes` should be 1000')
# Determine proper input shape
input_shape = _obtain_input_shape(input_shape,
default_size=224,
min_size=48,
dim_ordering=K.image_dim_ordering(),
include_top=include_top)
if input_tensor is None:
img_input = Input(shape=input_shape)
else:
if not K.is_keras_tensor(input_tensor):
img_input = Input(tensor=input_tensor, shape=input_shape)
else:
img_input = input_tensor
# Block 1
x = Convolution2D(64,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block1_conv1')(img_input)
x = Convolution2D(64,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block1_conv2')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='block1_pool')(x)
# Block 2
x = Convolution2D(128,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block2_conv1')(x)
x = Convolution2D(128,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block2_conv2')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='block2_pool')(x)
# Block 3
x = Convolution2D(256,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block3_conv1')(x)
x = Convolution2D(256,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block3_conv2')(x)
x = Convolution2D(256,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block3_conv3')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='block3_pool')(x)
# Block 4
x = Convolution2D(512,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block4_conv1')(x)
x = Convolution2D(512,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block4_conv2')(x)
x = Convolution2D(512,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block4_conv3')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='block4_pool')(x)
# Block 5
x = Convolution2D(512,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block5_conv1')(x)
x = Convolution2D(512,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block5_conv2')(x)
x = Convolution2D(512,
3,
3,
activation='relu',
border_mode='same',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='block5_conv3')(x)
x = MaxPooling2D((2, 2), strides=(2, 2), name='block5_pool')(x)
if include_top:
# Classification block
x = Flatten(name='flatten')(x)
x = Dense(4096,
activation='relu',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='fc1')(x)
x = Dense(4096,
activation='relu',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='fc2')(x)
x = Dense(classes,
activation='softmax',
W_regularizer=l2(weight_decay),
b_regularizer=l2(weight_decay),
name='predictions')(x)
# Ensure that the model takes into account
# any potential predecessors of `input_tensor`.
if input_tensor is not None:
inputs = get_source_inputs(input_tensor)
else:
inputs = img_input
# Create model.
model = Model(inputs, x, name='vgg16')
# load weights
if weights == 'imagenet':
if K.image_dim_ordering() == 'th':
if include_top:
weights_path = get_file(
'vgg16_weights_th_dim_ordering_th_kernels.h5',
TH_WEIGHTS_PATH,
cache_subdir='models')
else:
weights_path = get_file(
'vgg16_weights_th_dim_ordering_th_kernels_notop.h5',
TH_WEIGHTS_PATH_NO_TOP,
cache_subdir='models')
model.load_weights(weights_path)
if K.backend() == 'tensorflow':
warnings.warn('You are using the TensorFlow backend, yet you '
'are using the Theano '
'image dimension ordering convention '
'(`image_dim_ordering="th"`). '
'For best performance, set '
'`image_dim_ordering="tf"` in '
'your Keras config '
'at ~/.keras/keras.json.')
convert_all_kernels_in_model(model)
else:
if include_top:
weights_path = get_file(
'vgg16_weights_tf_dim_ordering_tf_kernels.h5',
TF_WEIGHTS_PATH,
cache_subdir='models')
else:
weights_path = get_file(
'vgg16_weights_tf_dim_ordering_tf_kernels_notop.h5',
TF_WEIGHTS_PATH_NO_TOP,
cache_subdir='models')
model.load_weights(weights_path)
if K.backend() == 'theano':
convert_all_kernels_in_model(model)
return model
from keras.layers import Input, Dense, Convolution2D, MaxPooling2D, UpSampling2D, Dropout, Flatten
from keras.models import Model, Sequential
from keras.optimizers import SGD, Adadelta
# input: 100x100 images with 3 channels -> (100, 100, 3) tensors.
# this applies 32 convolution filters of size 3x3 each.
model = Sequential()
model.add(Convolution2D(32, 3, 3, activation='relu',
input_shape=(150, 150, 3)))
model.add(Convolution2D(64, 3, 3, activation='relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Dropout(0.25))
model.add(Flatten())
model.add(Dense(128, activation='relu'))
model.add(Dropout(0.5))
model.add(Dense(6, activation='softmax'))
model.compile(loss='categorical_crossentropy',
optimizer=Adadelta(),
metrics=['accuracy'])
model.save('ASLModel.h5')
def load_model(classes=10, img_rows=28, img_cols=28):
input_shape = SketchANetModel.load_inputshape(img_rows, img_cols)
model = Sequential()
# 1 Input: 225x225 Output: 71x71
model.add(
Convolution2D(input_shape=input_shape,
data_format='channels_last',
strides=(1, 1),
filters=64,
kernel_size=(2, 2),
padding="same",
activation="relu"))
# Inout 71x71 Output: 35x35
model.add(
MaxPooling2D(pool_size=(3, 3), strides=(2, 2), padding="same"))
# 2 Input: 35x35 Output: 31x31
model.add(
Convolution2D(kernel_size=(3, 3),
filters=128,
strides=(1, 1),
activation="relu",
padding="same"))
# Input: 31x31 Output: 15x15s
model.add(
MaxPooling2D(pool_size=(3, 3), strides=(2, 2), padding="same"))
# Input: 15x15 Output: 15x15
model.add(
Convolution2D(kernel_size=(3, 3),
filters=256,
strides=(1, 1),
activation="relu",
padding="valid"))
model.add(
Convolution2D(kernel_size=(3, 3),
filters=256,
strides=(1, 1),
activation="relu",
padding="valid"))
model.add(
Convolution2D(kernel_size=(3, 3),
filters=256,
strides=(1, 1),
activation="relu",
padding="valid"))
# Input: 15x15 Output: 7x7
model.add(
MaxPooling2D(pool_size=(3, 3), strides=(2, 2), padding="same"))
# Input: 7x7 Output: 1x1
model.add(
Convolution2D(kernel_size=(7, 7),
filters=512,
strides=(1, 1),
activation="relu",
padding="same"))
# Input: 1x1 Output: 1x1
model.add(Dropout(rate=0.5))
model.add(
Convolution2D(kernel_size=(1, 1),
filters=512,
strides=(1, 1),
activation="relu",
padding="same"))
model.add(Dropout(rate=0.5))
model.add(
Convolution2D(kernel_size=(1, 1),
filters=512,
strides=(1, 1),
activation="relu",
padding="same"))
model.add(Flatten())
model.add(Dense(units=classes, activation="softmax"))
model.compile(optimizer='Adam',
loss='categorical_crossentropy',
metrics=['accuracy'])
return model
def SqueezeNet(input_tensor=None,
input_shape=None,
weights='imagenet',
classes=1000):
if weights not in {'imagenet', None}:
raise ValueError('The `weights` argument should be either '
'`None` (random initialization) or `imagenet` '
'(pre-training on ImageNet).')
if weights == 'imagenet' and classes != 1000:
raise ValueError('If using `weights` as imagenet with `include_top`'
' as true, `classes` should be 1000')
# input_shape = _obtain_input_shape(input_shape,
# default_size=227,
# min_size=48,
# data_format=K.image_data_format(),
# include_top=True)
input_shape = _obtain_input_shape(input_shape,
default_size=227,
min_size=48,
data_format=K.image_data_format(),
require_flatten=True)
if input_tensor is None:
img_input = Input(shape=input_shape)
else:
if not K.is_keras_tensor(input_tensor):
img_input = Input(tensor=input_tensor, shape=input_shape)
else:
img_input = input_tensor
x = Convolution2D(64, (3, 3),
strides=(2, 2),
padding='valid',
name='conv1')(img_input)
x = Activation('relu', name='relu_conv1')(x)
x = MaxPooling2D(pool_size=(3, 3), strides=(2, 2), name='pool1')(x)
x = fire_module(x, fire_id=2, squeeze=16, expand=64)
x = fire_module(x, fire_id=3, squeeze=16, expand=64)
x = MaxPooling2D(pool_size=(3, 3), strides=(2, 2), name='pool3')(x)
x = fire_module(x, fire_id=4, squeeze=32, expand=128)
x = fire_module(x, fire_id=5, squeeze=32, expand=128)
x = MaxPooling2D(pool_size=(3, 3), strides=(2, 2), name='pool5')(x)
x = fire_module(x, fire_id=6, squeeze=48, expand=192)
x = fire_module(x, fire_id=7, squeeze=48, expand=192)
x = fire_module(x, fire_id=8, squeeze=64, expand=256)
x = fire_module(x, fire_id=9, squeeze=64, expand=256)
x = Dropout(0.5, name='drop9')(x)
x = Convolution2D(classes, (1, 1), padding='valid', name='conv10')(x)
x = Activation('relu', name='relu_conv10')(x)
x = GlobalAveragePooling2D()(x)
out = Activation('softmax', name='loss')(x)
# Ensure that the model takes into account
# any potential predecessors of `input_tensor`.
if input_tensor is not None:
inputs = get_source_inputs(input_tensor)
else:
inputs = img_input
model = Model(inputs, out, name='squeezenet')
# load weights
if weights == 'imagenet':
weights_path = get_file(
'squeezenet_weights_tf_dim_ordering_tf_kernels.h5',
WEIGHTS_PATH,
cache_subdir='models')
model.load_weights(weights_path)
if K.image_data_format() == 'channels_first':
if K.backend() == 'tensorflow':
warnings.warn('You are using the TensorFlow backend, yet you '
'are using the Theano '
'image data format convention '
'(`image_data_format="channels_first"`). '
'For best performance, set '
'`image_data_format="channels_last"` in '
'your Keras config '
'at ~/.keras/keras.json.')
return model
# Part 1 - Building the CNN
# Importing the Keras libraries and packages
from keras.models import Sequential
from keras.layers import Convolution2D
from keras.layers import MaxPooling2D
from keras.layers import Flatten
from keras.layers import Dense
# Initializing the CNN
classifier = Sequential()
# Step 1 - Convolution
classifier.add(
Convolution2D(filters=32,
kernel_size=3,
input_shape=(64, 64, 3),
activation='relu'))
# Step 2 - Pooling
classifier.add(MaxPooling2D(pool_size=(2, 2)))
# Adding a 2nd convolutional layer
classifier.add(
Convolution2D(filters=32,
kernel_size=3,
data_format="channels_last",
activation='relu'))
classifier.add(MaxPooling2D(pool_size=(2, 2)))
# Step 3 - Flattening
classifier.add(Flatten())
# dimensions of our images. img_width, img_height = 150, 150 # train_data_dir = 'data/train' # validation_data_dir = 'data/validation' test_data_dir = '/home/pablo/Documents/Git_repositories/data_examples/DogsVsCats/data/test_small' # nb_train_samples = 2000 # nb_validation_samples = 800 nb_predict_samples = len(os.listdir(os.path.join(test_data_dir, 'test'))) # nb_epoch = 50 # build the VGG16 network model = Sequential() model.add(ZeroPadding2D((1, 1), input_shape=(3, img_width, img_height))) model.add(Convolution2D(64, 3, 3, activation='relu', name='conv1_1')) model.add(ZeroPadding2D((1, 1))) model.add(Convolution2D(64, 3, 3, activation='relu', name='conv1_2')) model.add(MaxPooling2D((2, 2), strides=(2, 2))) model.add(ZeroPadding2D((1, 1))) model.add(Convolution2D(128, 3, 3, activation='relu', name='conv2_1')) model.add(ZeroPadding2D((1, 1))) model.add(Convolution2D(128, 3, 3, activation='relu', name='conv2_2')) model.add(MaxPooling2D((2, 2), strides=(2, 2))) model.add(ZeroPadding2D((1, 1))) model.add(Convolution2D(256, 3, 3, activation='relu', name='conv3_1')) model.add(ZeroPadding2D((1, 1))) model.add(Convolution2D(256, 3, 3, activation='relu', name='conv3_2')) model.add(ZeroPadding2D((1, 1)))
