def nasnet_retinanet(num_classes,
backbone='nasnet',
inputs=None,
modifier=None,
**kwargs):
k.clear_session()
# choose default input
if inputs is None:
if keras.backend.image_data_format() == 'channels_first':
inputs = keras.layers.Input(shape=(3, None, None))
else:
inputs = keras.layers.Input(shape=(None, None, 3))
# create the resnet backbone
if backbone == 'nasnet':
nasnet_model = NASNetLarge(weights=None,
include_top=False,
input_tensor=inputs)
else:
raise ValueError('Backbone (\'{}\') is invalid.'.format(backbone))
# invoke modifier if given
if modifier:
nasnet_model = modifier(nasnet_model)
concatenated_features = [
nasnet_model.get_layer('add_4').output,
nasnet_model.get_layer('activation_204').output, nasnet_model.output
]
# create the full model
return retinanet.retinanet(inputs=inputs,
num_classes=num_classes,
backbone_layers=concatenated_features,
**kwargs)
def evaluation(args):
path_img_val = '../datasets/ilsvrc2012/images/val/'
path_val_info = '../datasets/ilsvrc2012/images/val.txt'
if args.model == 'vgg16':
model = VGG16(weights='imagenet')
model.summary()
elif args.model == 'resnet152':
model = ResNet152(weights='imagenet')
model.summary()
elif args.model == 'resnet152v2':
model = ResNet152V2(weights='imagenet')
model.summary()
elif args.model == 'inceptionresnetv2':
model = InceptionResNetV2(weights='imagenet')
model.summary()
elif args.model == 'densenet201':
model = DenseNet201(weights='imagenet')
model.summary()
elif args.model == 'nasnetlarge':
model = NASNetLarge(weights='imagenet')
model.summary()
name, label = load_header_imagenet(load_file(path_val_info))
pred = list()
for i, n in enumerate(name):
x = preprocessing_imagenet(path_img_val + n, args)
pred.append(np.argmax(model.predict(x), axis=1)[0])
if i % 1000 == 0:
print(n)
correct = len([p for p, l in zip(pred, label) if p == l])
print('Accuracy of the IMAGENET dataset using model %s: %.4f' %
(args.model, correct / len(label)))
def predict(image):
model = NASNetLarge()
pred = model.predict(image)
decoded_predictions = decode_predictions(pred, top=10)
response = 'NASNetLarge predictions: ' + str(decoded_predictions[0][0:5])
print(response)
np.argmax(pred[0])
return response
def apply_Feature_Extractor_model(params):
"""
Apply a previously trained model.
:param params: Hyperparameters
:return:
"""
model = None
if params['MODEL_TYPE'] == 'InceptionV3':
model = InceptionV3(weights='imagenet', include_top=False)
elif params['MODEL_TYPE'] == 'NASNetLarge':
model = NASNetLarge(weights='imagenet', include_top=False)
elif params['MODEL_TYPE'] == 'ResNet152':
model = ResNet152V2(weights='imagenet', include_top=False)
print(model.summary())
base_path = params['DATA_ROOT_PATH']
for s in params['EXTRACT_ON_SETS']:
if params['SPLIT_OUTPUT']:
path_general = params['STORE_PATH'] + '/' + params.get(
'MODEL_TYPE', 'features') + '/' + s + '/'
if not os.path.isdir(
path_general): # create dir if it doesn't exist
os.makedirs(path_general)
list_filepath = base_path + '/' + params['IMG_FILES'][s]
image_list = file2list(list_filepath)
eta = -1
start_time = time.time()
n_images = len(image_list)
for n_sample, imname in list(enumerate(image_list)):
if params['MODEL_TYPE'] == 'InceptionV3':
features = inceptionV3(model, imname)
elif params['MODEL_TYPE'] == 'NASNetLarge':
features = nasNetLarge(model, imname)
elif params['MODEL_TYPE'] == 'ResNet152':
features = resNet152(model, imname)
# Keras puts the spatial dimensions at the start. We may want to put them at the end
if params.get('SPATIAL_LAST', True):
features = features.transpose(0, 3, 1, 2)
filepath = path_general + imname.split(
'/')[-1][:-4] + '.npy' if imname.split(
'/')[-1][-4:] == '.jpg' or imname.split('/')[-1][
-4:] == '.png' else path_general + imname.split(
'/')[-1] + '.npy'
numpy2file(filepath, features, permission='wb', split=False)
sys.stdout.write('\r')
sys.stdout.write("\t Processed %d/%d - ETA: %ds " %
(n_sample, n_images, int(eta)))
sys.stdout.flush()
eta = (n_images - n_sample) * (time.time() - start_time) / max(
n_sample, 1)
print("Features saved in", path_general)
def nasNetLarge(weights=None, include_top=False, input_shape=(224, 224, 3)):
nasNet = NASNetLarge(weights=weights,
include_top=include_top,
input_shape=input_shape)
if include_top:
WRN_WEIGHTS_PATH = "https://www.flyai.com/m/v0.8|NASNet-large.h5"
else:
WRN_WEIGHTS_PATH = "https://www.flyai.com/m/v0.8|NASNet-large-no-top.h5"
filename = WRN_WEIGHTS_PATH.split('|')[-1]
fpath = get_file(filename, WRN_WEIGHTS_PATH, cache_subdir=MODEL_PATH)
nasNet.load_weights(fpath)
print('NASNetLarge weights loaded!')
return nasNet
def build(config):
image_width = config['image_processing']['image_width']
image_height = config['image_processing']['image_height']
image_channels = config['image_processing']['image_channels']
number_of_classes = config['dataset']['number_of_classes']
model_file = config['model'].get('model_file', None)
regularization = config['hyper_parameters'].get('activity_regularizer',
None)
weights = config['model'].get('weights', None)
print("weights:", weights)
if weights == 'imagenet':
base_model = NASNetLarge(input_shape=(image_width, image_height,
image_channels),
weights='imagenet',
include_top=False)
else:
base_model = NASNetLarge(input_shape=(image_width, image_height,
image_channels),
weights=None,
include_top=False)
x = base_model.output
x = GlobalAveragePooling2D()(x)
if regularization is not None:
regularization = getattr(
importlib.import_module(f'keras.regularizers'),
regularization['name'])
regularization = regularization(
**config['hyper_parameters']['activity_regularizer']['params'])
predictions = Dense(activity_regularizer=regularization,
units=number_of_classes,
activation='softmax',
name='predictions')(x)
model = Model(inputs=base_model.input, outputs=predictions)
if weights != 'imagenet' and weights is not None:
print(weights, weights is not 'imagenet')
model.load_weights(weights)
return model
def nasnet_scratch(model_type: Text, in_shape: Union[None, Tuple[int, int,
int]],
out_units: int):
'''NASNet Large (331x331 in default) or Mobile (224x224 in default)
:param model_type: "Large" or "Mobile"
:param in_shape: input shape in format (H, W, D), or None
:param out_units: no. of classes
'''
LARGE = 'LARGE'
MOBILE = 'MOBILE'
if model_type.upper() == LARGE:
model = NASNetLarge(input_shape=in_shape,
include_top=True,
weights=None,
input_tensor=None,
classes=out_units)
elif model_type.upper() == MOBILE:
model = NASNetMobile(input_shape=in_shape,
include_top=True,
weights=None,
input_tensor=None,
classes=out_units)
else:
raise RuntimeError(
'invalid model type argument, "{}". "Large" and "Mobile" are supported.'
.format(model_type))
return model
def build_nasnetlarge(n_classes):
# Clear memory for new model
K.clear_session()
# Put the Inception V3 (cut out the classifer part) and our custom classifier on top
base_model = NASNetLarge(weights='imagenet',
include_top=False,
input_tensor=Input(shape=(200, 200, 3)))
x = base_model.output
x = GlobalAveragePooling2D()(x)
x = Dense(4096)(x)
x = BatchNormalization()(x)
x = Activation('relu')(x)
x = Dropout(.5)(x)
predictions = Dense(n_classes,
init='glorot_uniform',
W_regularizer=l2(.001),
activation='softmax')(x)
model = Model(inputs=base_model.input, outputs=predictions)
# i.e. freeze all convolutional InceptionV3 layers
for layer in base_model.layers:
layer.trainable = False
# opt = Adam(lr=0.001, beta_1=0.9, beta_2=0.999, decay=1e-6)
opt = SGD(lr=0.01, momentum=0.1, decay=1e-6, nesterov=True)
model.compile(optimizer=opt,
loss='categorical_crossentropy',
metrics=['accuracy', 'top_k_categorical_accuracy'])
return model
class Model:
def __init__(self, debug=False):
self.debug = debug
if debug:
return
model_path = "{}/model/model.h5".format(os.getcwd())
if not os.path.isfile(model_path):
print("no model file")
exit(1)
print("loading model")
self.classifier = load_model(model_path)
self.nas = NASNetLarge(input_shape=None,
include_top=True,
weights='imagenet',
input_tensor=None,
pooling=None,
classes=1000)
self.nas.layers.pop()
self.nas.outputs = [self.nas.layers[-1].output]
self.nas.layers[-1].outbound_nodes = []
def predict(self, segment):
if self.debug:
return 1
features = self.nas.predict(np.array(segment))
result = self.classifier.predict(
np.array(features).reshape(1, FRAME_INTERVAL, 4032))
return np.argmax(result[0], axis=0)
def _define_model(self):
"""Defines the CNN used to transform the data
"""
if self._model_name == "xception":
model = Xception(include_top=False,
pooling="max",
input_shape=(self._height, self._width,
self._n_channel))
elif self._model_name == "densenet":
model = DenseNet201(include_top=False,
pooling="max",
input_shape=(self._height, self._width,
self._n_channel))
elif self._model_name == "inception":
model = InceptionV3(include_top=False,
pooling="max",
input_shape=(self._height, self._width,
self._n_channel))
elif self._model_name == "nasnet":
model = NASNetLarge(include_top=False,
pooling="max",
input_shape=(self._height, self._width,
self._n_channel))
else:
model = InceptionResNetV2(include_top=False,
pooling="max",
input_shape=(self._height, self._width,
self._n_channel))
# Sometimes we only have one GPU so Keras will automatically detect
# this; otherwise we have to specify this setting
if self._ngpu <= 1:
return model
else:
return multi_gpu_model(model=model, gpus=self._ngpu)
def nasnetlarge_model(lr,
class_num,
img_rows=299,
img_cols=299,
frozen_layer_index=-1,
epoch=5,
opt='adam'):
nasnet_model = NASNetLarge(includ_top=False,
input_tensor=None,
input_shape=(img_rows, img_cols, 3),
weights='imagenet',
classes=class_num)
for layer in nasnet_model.layers[:frozen_layer_index]:
layer.trainable = False
x = nasnet_model.outputs
x = Dropout(0.7)(x)
x = Flatten()(x)
predictions = Dense(units=class_num, activation='softmax')(x)
if epoch >= 5:
if epoch % 5 == 0:
lr = lr * 0.1
else:
lr = lr
model = Model(inputs=nasnet_model.inputs, outputs=predictions)
optimizers = get_optimizer(lr, opt)
model.summary()
model.compile(optimizer=optimizers,
loss='categorical_crossentropy',
metrics=['accuracy'])
return model
def nasenet(image):
file_name = 'object'
image = load_img(file_name, target_size=(331, 331))
image = np.expand_dims(image, axis=0)
image = nas(image)
model = NASNetLarge()
predection = model.predict(image)
preddected = imagenet_utils.decode_predictions(predection)
preddected = preddected[0][0]
preddected = {
"model": 'nasenet',
"object_detected": preddected[1],
"accurecy": preddected[2] * 100
}
return preddected
def finetune_nasnet_large(weights=None, input_shape=None, num_classes=None):
base_weright = None
fine_weight = None
if weights:
if weights == 'imagenet':
base_weright = weights
else:
fine_weight = weights
basenet = NASNetLarge(weights=base_weright,
include_top=False,
input_shape=input_shape)
finetune_layer_after = "normal_concat_16" # 9%
trainable = False
for layer in basenet.layers:
if layer.name == finetune_layer_after:
trainable = True
layer.trainable = trainable
_input = basenet.input
x = basenet.output
x = layers.GlobalAveragePooling2D(name='final_gap')(x)
_output = layers.Dense(num_classes,
activation='softmax',
kernel_initializer='he_normal',
name='final_dense_mapping')(x)
model = Model(inputs=_input, outputs=_output)
if fine_weight:
model.load_weights(fine_weight)
return model
def nas_plus_conv(x_shape,y_shape):
nas = NASNetLarge(weights=None, include_top=False)
for layer in nas.layers:
layer.trainable = False
input_2 = Input(shape=x_shape, name='x_train')
# Use the generated model
output_resnet50_conv_2 = nas(input_2)
x2 = Conv2D(64, (3, 3), padding='same')(output_resnet50_conv_2)
x2 = BatchNormalization()(x2)
x2 = Activation('relu')(x2)
# x2= MaxPooling2D(pool_size=(2, 2))(x2)
x2 = Dropout(0.30)(x2)
x3 = Conv2D(128, (3, 3), padding='same')(x2)
x3 = BatchNormalization()(x3)
x3 = Activation('relu')(x3)
# x3 = MaxPooling2D(pool_size=(2, 2))(x3)
x3 = Dropout(0.30)(x3)
x4 = Conv2D(128, (3, 3), padding='same')(x3)
x4 = BatchNormalization()(x4)
x4 = Activation('relu')(x4)
# x4 = MaxPooling2D(pool_size=(2, 2))(x4)
x4 = Dropout(0.30)(x4)
x4 = Flatten(name='flatten_2')(x4)
x4 = Dense(256, activation='relu', name='fc2')(x4)
x4 = Dropout(0.30)(x4)
x4 = Dense(y_shape, activation='softmax', name='fc3')(x4)
model = Model(inputs=input_2, outputs=x4)
return model
def Build_Model_NasNet(px_train , pSessionParameters , pTrainingParameters ):
from keras.layers import Input
from keras.applications.nasnet import NASNetLarge, NASNetMobile
# Builds a new model
'''
Input parameters:
px_train: training data to be used to set the input shape of the model
pModelBuildParameters: Dict of Parameters to define how the model is built.
Return parameters: model
'''
BatchNormFlag = pSessionParameters['BatchNorm']
NoClasses = pSessionParameters['ModelBuildParameters']['NoClasses']
Activation = pSessionParameters['ModelBuildParameters']['Activation']
IncludeTopFlag = pSessionParameters['ModelBuildParameters']['IncludeTop']
Model = pSessionParameters['ModelBuildParameters']['Model']
if IncludeTopFlag:
if Model == 'NasNetLarge':
print('Building Model: NASNetLarge')
conv_base = NASNetLarge(input_shape=(px_train.shape[1:]), weights=None, include_top=True , classes = NoClasses, pooling='avg')
elif Model == 'NasNetMobile':
print('Building Model: NASNetMobile')
conv_base = NASNetMobile(input_shape=(px_train.shape[1:]), weights=None, include_top=True , classes = NoClasses, pooling='avg')
model = models.Sequential()
model.add(conv_base)
else:
if Model == 'NasNetLarge':
print('Building Model: NASNetLarge')
conv_base = NASNetLarge(input_shape=(px_train.shape[1:]), weights=None, include_top=True , classes = NoClasses, pooling='avg')
elif Model == 'NasNetMobile':
print('Building Model: NASNetMobile')
conv_base = NASNetMobile(input_shape=(px_train.shape[1:]), weights=None, include_top=True , classes = NoClasses, pooling='avg')
model = models.Sequential()
model.add(conv_base)
model = Build_Model_AddLayers(model , pSessionParameters )
model.add(layers.Dense(NoClasses, activation=Activation, name='dense_class'))
return model
def train(path,BATCH_SIZE,IMG_SIZE,n_classes,save_path):
datagenerator = helpers.generate_data(BATCH_SIZE,IMG_SIZE,preprocess_input,path)
base_model = NASNetLarge(input_shape=(IMG_SIZE, IMG_SIZE,3),
include_top=False,
weights='imagenet')
compiled_model = helpers.transfer_learning(base_model,n_classes)
helpers.fit_model(compiled_model,datagenerator,save_path)
def create_model_NASNetLarge(include_top=False):
'''
Load NASNetLarge network pretrained on imagenet
:param include_top: include classification layer?
:return: NASNetLarge network
'''
my_model = NASNetLarge(weights='imagenet', include_top=include_top)
return my_model
def cnn_experiment(n):
x, y = load_images(grayScale=False)
# Try 3 layers with increasing size - 128, 256, 512
'''print("\n\nCNN with increasing layers and filter size:")
for layer in range(0, 3):
filter_size = 2** (layer + 7)
print("%s Layers, Filter size of %s" % (str(layer + 1), str(filter_size)))
model = getModel_Filters(n, layer + 1)
print(model.summary())
cnn(x, y, n, model)
print("\n\nCNN with increasing layers and contant filter size:")
#128 to 512
for pwr in range(7, 10):
size = 2 ** pwr
print("Filter size of %s" % str(size))
for layer in range(0, 3):
print("%s Layers" % str(layer + 1))
model = getModel_Layers(n, layer + 1, size)
cnn(x, y, n, model)
'''
'''
print("\n\nResNet:")
base_model = ResNet50(include_top=False,weights='imagenet',input_shape=(64,64,3))
print(base_model.summary())
out = base_model.output
out = Flatten()(out)
out = Dense(4096, activation='relu')(out)
out = Dense(4096, activation='relu')(out)
out = Dense(62, activation='softmax')(out)
model = Model(inputs=base_model.input, outputs=out)
cnn(x, y, n, model, pretrained=True)
'''
print("\n\nNASNet:")
base_model = NASNetLarge(include_top=False,
weights='imagenet',
input_shape=(n, n, 3))
print(base_model.summary())
out = base_model.output
out = Flatten()(out)
out = Dense(4096, activation='relu')(out)
out = Dense(4096, activation='relu')(out)
out = Dense(62, activation='softmax')(out)
model = Model(inputs=base_model.input, outputs=out)
cnn(x, y, n, model, pretrained=True)
def save_model12(new_model_path, conv_model_path):
model = NASNetLarge(
input_shape=(img_width, img_height, 3),
include_top=False,
weights=None
)
if pretrained:
model = NASNetLarge(
input_shape=(img_width, img_height, 3),
include_top=False,
weights='imagenet'
)
model.summary()
transfer_layer = model.get_layer('?')
conv_model = Model(inputs=model.input,
outputs=transfer_layer.output)
new_model = Sequential()
new_model.add(conv_model)
new_model.add(GlobalAveragePooling2D())
if num_fc_layers>=1:
new_model.add(Dense(num_fc_neurons, activation='relu'))
if num_fc_layers>=2:
new_model.add(Dropout(dropout))
new_model.add(Dense(num_fc_neurons, activation='relu'))
if num_fc_layers>=3:
new_model.add(Dropout(dropout))
new_model.add(Dense(num_fc_neurons, activation='relu'))
new_model.add(Dense(num_classes, activation='softmax'))
print(new_model.summary())
new_model.save(new_model_path)
conv_model.save(conv_model_path)
return
def __init__(self):
self.base_model = NASNetLarge(input_shape=(IMAGE_SIZE, IMAGE_SIZE, 3),
include_top=False,
weights=None,
pooling='avg')
x = Dropout(0.75)(self.base_model.output)
x = Dense(10, activation='softmax', name='toplayer')(x)
self.model = Model(self.base_model.input, x)
def createModelNasNet(size):
nas = NASNetLarge(weights='imagenet',
include_top=False,
pooling=None,
input_shape=size)
for layer in nas.layers:
layer.trainable = False
pool = AveragePooling2D(pool_size=(3, 3))(nas.output)
return Model(inputs=nas.input, outputs=pool)
def extract_features(directory, ids, model):
if int(model) == 1:
print("1")
# load ResNet50 model
model = ResNet50()
input_size = 224
else:
print("2")
# load NASNetLarge model
model = NASNetLarge(input_shape=(331, 331, 3),
include_top=True,
weights='imagenet',
input_tensor=None,
pooling=None)
input_size = 331
# pops the last layer to get the features
model.layers.pop()
model = Model(inputs=model.inputs, outputs=model.layers[-1].output)
# model.summary()
print(len(model.layers))
# model characteristics
plot_model(model, to_file='model.png')
imgs = load_list(ids)
print('Dataset: %d' % len(imgs))
N = len(imgs)
print(N)
results = []
i = 0
batch_size = 1 #this can be 8 for a GTX 1080 Ti and 32G of RAM
while i < N:
if i % 1024 == 0:
print('{} from {} images.'.format(i, N))
batch = imgs[i:i + batch_size]
i += batch_size
images = [
load_img(os.path.join(directory, img + ".jpg"),
target_size=(input_size, input_size)) for img in batch
]
images = [preprocess_input(img_to_array(img)) for img in images]
images = np.stack(images)
r = model.predict(images)
for ind in range(batch_size):
results.append(r[ind])
return results
def __init__(self, debug=False):
self.debug = debug
if debug:
return
model_path = "{}/model/model.h5".format(os.getcwd())
if not os.path.isfile(model_path):
print("no model file")
exit(1)
print("loading model")
self.classifier = load_model(model_path)
self.nas = NASNetLarge(input_shape=None,
include_top=True,
weights='imagenet',
input_tensor=None,
pooling=None,
classes=1000)
self.nas.layers.pop()
self.nas.outputs = [self.nas.layers[-1].output]
self.nas.layers[-1].outbound_nodes = []
def get_model_nasnet_large():
from keras.models import Model
from keras.applications.nasnet import NASNetLarge
from keras.layers.core import Dense
model = NASNetLarge(input_shape=(299, 299, 3), weights=None)
x = model.layers[-2].output
x = Dense(7178, activation='sigmoid', name='predictions')(x)
model = Model(inputs=model.input, outputs=x)
return model
def nas_2(x_shape,y_shape):
nas = NASNetLarge( weights=None,include_top=False, input_shape=x_shape, pooling='max',classes=y_shape)
for layer in nas.layers[:-4]:
# if layer.name in ['block5_conv1', 'block4_conv1']:
# layer.trainable = True
# else:
layer.trainable = False
model = Sequential()
model.add(nas)
model.add(Dense(y_shape))
model.add(Activation('softmax'))
return model
def get_model(model_name,
input_tensor=Input(shape=(96, 96, 3)),
num_class=2): ##Modified by Dooman
inputs = Input(input_shape)
if model_name == "Xception":
base_model = Xception(include_top=False, input_shape=input_shape)
elif model_name == "ResNet50":
base_model = ResNet50(include_top=False, input_shape=input_shape)
elif model_name == "ResNet101":
base_model = ResNet101(include_top=False, input_shape=input_shape)
elif model_name == "InceptionV3":
base_model = InceptionV3(include_top=False, input_shape=input_shape)
elif model_name == "InceptionResNetV2":
base_model = InceptionResNetV2(include_top=False,
input_shape=input_shape)
elif model_name == "DenseNet201":
base_model = DenseNet201(include_top=False, input_shape=input_shape)
elif model_name == "NASNetMobile":
base_model = NASNetMobile(
include_top=False, input_tensor=input_tensor) ##Modified by Dooman
elif model_name == "NASNetLarge":
base_model = NASNetLarge(include_top=False, input_tensor=input_tensor)
if model_name == "VGG16":
base_model = VGG16(input_shape=IMAGE_SIZE + [3],
weights='imagenet',
include_top=False)
for layer in base_model.layers:
layer.trainable = False
x = base_model(inputs)
output1 = GlobalMaxPooling2D()(x)
output2 = GlobalAveragePooling2D()(x)
output3 = Flatten()(x)
outputs = Concatenate(axis=-1)([output1, output2, output3])
outputs = Dropout(0.5)(outputs)
outputs = BatchNormalization()(outputs)
if num_class > 1:
outputs = Dense(num_class, activation="softmax")(outputs)
else:
outputs = Dense(1, activation="sigmoid")(outputs)
model = Model(inputs, outputs)
model.summary()
return model
def build_model_flat(input_image):
input_tensor = Input(shape=(input_image))
base_model = NASNetLarge(input_shape=input_image,
input_tensor=input_tensor,
include_top=False,
weights=None)
flat = Flatten()(base_model.output)
fc_1 = Dense(4096, activation='relu')(flat)
output = Dense(10 * 10, activation='sigmoid')(fc_1)
model = Model(inputs=input_tensor, outputs=output)
model.compile(optimizer='adam', loss=losses.binary_crossentropy)
return model
def model_load():
#重みvをimagenetとすると、学習済みパラメータを初期値としてResNet50を読み込む。
base_model = NASNetLarge(weights='imagenet',
include_top=False,
input_tensor=Input(shape=(img_size, img_size, 3)))
#base_model.summary()
x = base_model.output
#入力を平滑化
x = Flatten()(x)
#過学習防止
x = Dropout(.4)(x)
return (x, base_model)
def nasnet_large(input_image_size, number_of_output_categories):
base_model = NASNetLarge(include_top=False,
weights="imagenet",
input_shape=(input_image_size, input_image_size,
3))
base_model.trainable = False
model = Sequential()
model.add(base_model)
model.add(Flatten())
model.add(Dense(1024, activation='relu'))
model.add(Dropout(0.25))
model.add(Dense(1024, activation='relu'))
model.add(Dense(number_of_output_categories, activation='sigmoid'))
model.compile(loss='binary_crossentropy',
optimizer=Adam(),
metrics=['accuracy'])
return model
def NASNet(self):
base_model = NASNetLarge(include_top=False,
weights="imagenet",
input_shape=(self.height, self.width,
self.depth))
model = Sequential()
model.add(base_model)
model.add(GlobalAveragePooling2D())
model.add(Dense(512, activation='relu'))
model.add(Dense(self.classes, activation='softmax'))
return model