def main():
"""Compute rank1 and rank5 accuracies
"""
# load the RGB means for the training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize the image preprocessors
simple_preprocessor = SimplePreprocessor(64, 64)
mean_preprocessor = MeanPreprocessor(means["R"], means["G"], means["B"])
image_to_array_preprocessor = ImageToArrayPreprocessor()
# initialize the testing dataset generator
test_gen = HDF5DatasetGenerator(
config.TEST_HDF5,
64,
preprocessors=[simple_preprocessor, mean_preprocessor, image_to_array_preprocessor],
classes=config.NUM_CLASSES,
)
# load the pre-trained network
print("[INFO] loading model...")
model = load_model(config.MODEL_PATH)
# make predictions on the testing data
print("[INFO] predicting on test data...")
predictions = model.predict_generator(test_gen.generator(), steps=test_gen.num_images // 64, max_queue_size=10)
# compute the rank-1 and rank-5 accuracies
(rank1, rank5) = rank5_accuracy(predictions, test_gen.database["labels"])
print("[INFO] rank-1: {:.2f}%".format(rank1 * 100))
print("[INFO] rank-5: {:.2f}%".format(rank5 * 100))
# close the database
test_gen.close()
def main():
"""Train ShallowNet on animals dataset.
"""
# construct the argument parser and parse the arguments
args = argparse.ArgumentParser()
args.add_argument("-d", "--dataset", required=True, help="path to input dataset")
args = vars(args.parse_args())
# grab the list of images that we'll be describing
print("[INFO] loading images...")
image_paths = list(paths.list_images(args["dataset"]))
# initialize the image preprocessors
simple_preprocessor = SimplePreprocessor(32, 32)
image_to_array_preprocessor = ImageToArrayPreprocessor()
# load the dataset from disk then scale the raw pixel intensities to the range [0, 1]
dataset_loader = SimpleDatasetLoader(preprocessors=[simple_preprocessor, image_to_array_preprocessor])
(data, labels) = dataset_loader.load(image_paths, verbose=500)
data = data.astype("float") / 255.0
# partition the data into training and testing splits using 75% of
# the data for training and the remaining 25% for testing
(train_x, test_x, train_y, test_y) = train_test_split(data, labels, test_size=0.25, random_state=42)
# convert the labels from integers to vectors
train_y = LabelBinarizer().fit_transform(train_y)
test_y = LabelBinarizer().fit_transform(test_y)
# initialize the optimizer and model
print("[INFO] compiling model...")
opt = SGD(lr=0.005)
model = ShallowNet.build(width=32, height=32, depth=3, classes=3)
model.compile(loss="categorical_crossentropy", optimizer=opt, metrics=["accuracy"])
# train the network
print("[INFO] training network...")
model_fit = model.fit(train_x, train_y, validation_data=(test_x, test_y), batch_size=32, epochs=100, verbose=1)
# evaluate the network
print("[INFO] evaluating network...")
predictions = model.predict(test_x, batch_size=32)
print(
classification_report(test_y.argmax(axis=1), predictions.argmax(axis=1), target_names=["cat", "dog", "panda"])
)
# plot the training loss and accuracy
plt.style.use("ggplot")
plt.figure()
plt.plot(np.arange(0, 100), model_fit.history["loss"], label="train_loss")
plt.plot(np.arange(0, 100), model_fit.history["val_loss"], label="val_loss")
plt.plot(np.arange(0, 100), model_fit.history["acc"], label="train_acc")
plt.plot(np.arange(0, 100), model_fit.history["val_acc"], label="val_acc")
plt.title("Training Loss and Accuracy")
plt.xlabel("Epoch #")
plt.ylabel("Loss/Accuracy")
plt.legend()
plt.show()
def main():
"""Train a k-NN classifier.
"""
# construct the argument parse and parse the arguments
args = argparse.ArgumentParser()
args.add_argument("-d",
"--dataset",
required=True,
help="path to input dataset")
args.add_argument("-k",
"--neighbors",
type=int,
default=1,
help="# of nearest neighbors for classification")
args.add_argument(
"-j",
"--jobs",
type=int,
default=-1,
help="# of jobs for k-NN distance (-1 uses all available cores)")
args = vars(args.parse_args())
# grab the list of images that we'll be describing
print("[INFO] loading images...")
image_paths = list(paths.list_images(args["dataset"]))
# initialize the image preprocessor, load the dataset from disk,
# and reshape the data matrix
preprocessor = SimplePreprocessor(32, 32)
loader = SimpleDatasetLoader(preprocessors=[preprocessor])
(data, labels) = loader.load(image_paths, verbose=500)
data = data.reshape((data.shape[0], 3072))
# show some information on memory consumption of the images
print("[INFO] features matrix: {:.1f}MB".format(data.nbytes /
(1024 * 1024.0)))
# encode the labels as integers
label_encoder = LabelEncoder()
labels = label_encoder.fit_transform(labels)
# partition the data into training and testing splits using 75% of
# the data for training and the remaining 25% for testing
(train_x, test_x, train_y, test_y) = train_test_split(data,
labels,
test_size=0.25,
random_state=42)
# train and evaluate a k-NN classifier on the raw pixel intensities
print("[INFO] evaluating k-NN classifier...")
model = KNeighborsClassifier(n_neighbors=args["neighbors"],
n_jobs=args["jobs"])
model.fit(train_x, train_y)
print(
classification_report(test_y,
model.predict(test_x),
target_names=label_encoder.classes_))
def training(aug, means_path, train_hdf5_path, val_hdf5_path, fig_path, json_path, label_encoder_path, best_weight_path, checkpoint_path, cross_val=None):
# load RGB means
means = json.loads(open(means_path).read())
# initialize image preprocessors
sp, mp, pp, iap = SimplePreprocessor(227, 227), MeanPreprocessor(means['R'], means['G'], means['B']), PatchPreprocessor(227, 227), ImageToArrayPreprocessor()
# initialize training and validation image generator
train_gen = HDF5DatasetGenerator(train_hdf5_path, config.BATCH_SIZE, preprocessors=[pp, mp, iap], aug=aug, classes=config.NUM_CLASSES)
val_gen = HDF5DatasetGenerator(val_hdf5_path, config.BATCH_SIZE, preprocessors=[sp, mp, iap], aug=aug, classes=config.NUM_CLASSES)
metrics = ['accuracy']
if config.DATASET_TYPE == 'age':
le = pickle.loads(open(label_encoder_path, 'rb').read())
agh = AgeGenderHelper(config, deploy)
one_off_mappings = agh.build_oneoff_mappings(le)
one_off = OneOffAccuracy(one_off_mappings)
metrics.append(one_off.one_off_accuracy)
# construct callbacks
callbacks = [TrainingMonitor(fig_path, json_path=json_path, start_at=args['start_epoch']), EpochCheckpoint(checkpoint_path, every=5, start_at=args['start_epoch']), ModelCheckpointsAdvanced(best_weight_path, json_path=json_path, start_at=args['start_epoch'])] #, LearningRateScheduler(decay)
if cross_val is None:
print('[INFO] compiling model...')
else:
print(f'[INFO] compiling model for cross validation {cross_val}...')
if args['start_epoch'] == 0:
if not os.path.exists(checkpoint_path):
os.makedirs(checkpoint_path)
model = AgeGenderNet.build(227, 227, 3, config.NUM_CLASSES, reg=5e-4)
model.compile(optimizer='adam', loss='categorical_crossentropy', metrics=metrics)
else:
model_path = os.path.sep.join([checkpoint_path, f"epoch_{args['start_epoch']}.hdf5"])
print(f"[INFO] loading {model_path}...")
if config.DATASET_TYPE == 'age':
model = load_model(model_path, custom_objects={'one_off_accuracy': one_off.one_off_accuracy})
elif config.DATASET_TYPE == 'gender':
model = load_model(model_path)
# update learning rate
print(f'[INFO] old learning rate: {K.get_value(model.optimizer.lr)}')
K.set_value(model.optimizer.lr, INIT_LR)
print(f'[INFO] new learning rate: {K.get_value(model.optimizer.lr)}')
# train the network
if cross_val is None:
print('[INFO] training the network...')
else:
print(f'[INFO] training the network for cross validation {cross_val}...')
model.fit_generator(train_gen.generator(), steps_per_epoch=train_gen.num_images//config.BATCH_SIZE, validation_data=val_gen.generator(), validation_steps=val_gen.num_images//config.BATCH_SIZE, epochs=MAX_EPOCH-args['start_epoch'], verbose=2, callbacks=callbacks)
# close dataset
train_gen.close()
val_gen.close()
def main():
"""Load pre-trained model from disk
"""
# construct the argument parse and parse the arguments
args = argparse.ArgumentParser()
args.add_argument("-d",
"--dataset",
required=True,
help="path to input dataset")
args.add_argument("-m",
"--model",
required=True,
help="path to pre-trained model")
args = vars(args.parse_args())
# initialize the class labels
class_labels = ["cat", "dog", "panda"]
# grab the list of images in the dataset then randomly sample indexes into the image paths list
print("[INFO] sampling images...")
image_paths = np.array(list(paths.list_images(args["dataset"])))
idxs = np.random.randint(0, len(image_paths), size=(10, ))
image_paths = image_paths[idxs]
# initialize the image preprocessors
simple_preprocessor = SimplePreprocessor(32, 32)
image_to_array_preprocessor = ImageToArrayPreprocessor()
# load the dataset from disk then scale the raw pixel intensities to the range [0, 1]
dataset_loader = SimpleDatasetLoader(
preprocessors=[simple_preprocessor, image_to_array_preprocessor])
(data, _) = dataset_loader.load(image_paths)
data = data.astype("float") / 255.0
# load the pre-trained network
print("[INFO] loading pre-trained network...")
model = load_model(args["model"])
# make predictions on the images
print("[INFO] predicting...")
preds = model.predict(data, batch_size=32).argmax(axis=1)
# loop over the sample images
for (i, image_path) in enumerate(image_paths):
# load the example image, draw the prediction, and display it to our screen
image = cv2.imread(image_path)
cv2.putText(image, "Label: {}".format(class_labels[preds[i]]),
(10, 30), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (0, 255, 0), 2)
cv2.imshow("Image", image)
cv2.waitKey(0)
def main():
"""Run various regularization techniques.
"""
# construct the argument parse and parse the arguments
args = argparse.ArgumentParser()
args.add_argument("-d",
"--dataset",
required=True,
help="path to input dataset")
args = vars(args.parse_args())
# grab the list of image paths
print("[INFO] loading images...")
image_paths = list(paths.list_images(args["dataset"]))
# initialize the image preprocessor, load the dataset from disk,
# and reshape the data matrix
preprocessor = SimplePreprocessor(32, 32)
loader = SimpleDatasetLoader(preprocessors=[preprocessor])
(data, labels) = loader.load(image_paths, verbose=500)
data = data.reshape((data.shape[0], 3072))
# encode the labels as integers
label_encoder = LabelEncoder()
labels = label_encoder.fit_transform(labels)
# partition the data into training and testing splits using 75% of
# the data for training and the remaining 25% for testing
(train_x, test_x, train_y, test_y) = train_test_split(data,
labels,
test_size=0.25,
random_state=5)
# loop over our set of regularizers
for regularizer in (None, "l1", "l2"):
# train a SGD classifier using a softmax loss function and the
# specified regularization function for 10 epochs
print("[INFO] training model with `{}` penalty".format(regularizer))
model = SGDClassifier(loss="log",
penalty=regularizer,
max_iter=10,
learning_rate="constant",
tol=1e-3,
eta0=0.01,
random_state=42)
model.fit(train_x, train_y)
# evaluate the classifier
acc = model.score(test_x, test_y)
print("[INFO] `{}` penalty accuracy: {:.2f}%".format(
regularizer, acc * 100))
classNames = [pt.split(os.path.sep)[-2] for pt in imagePaths]
classNames = [str(x) for x in np.unique(classNames)]
print("[INFO] Names of classes {}...".format(classNames))
from pyimagesearch.preprocessing import ImageToArrayPreprocessor
from pyimagesearch.preprocessing import AspectAwarePreprocessor
from pyimagesearch.preprocessing import PatchPreprocessor
from pyimagesearch.preprocessing import SimplePreprocessor
from pyimagesearch.preprocessing import CropPreprocessor
from pyimagesearch.preprocessing import AddChannelPreprocessor
# initialize the image preprocessors
aap = AspectAwarePreprocessor(224, 224)
iap = ImageToArrayPreprocessor()
pp = PatchPreprocessor(224, 224)
sp = SimplePreprocessor(224, 224)
cp = CropPreprocessor(224, 224)
acp = AddChannelPreprocessor(10, 20)
from pyimagesearch.datasets import SimpleDatasetLoader
# load the image (data) and extract the class label assuming
# that our path has the following format:
# /path/to/dataset/{class}/{image}.jpg
# print("[INFO] loading {}".format(imagePaths))
# load the dataset from disk then scale the raw pixel intensities
# to the range [0, 1]
spreproc = "sp_aap_iap"
sdl = SimpleDatasetLoader(preprocessors=[sp, aap, iap])
(data, labels) = sdl.load(imagePaths, verbose=500)
data = data.astype("float") / 255.0
from keras.optimizers import Adam
import json
import os
import pdb
aug = ImageDataGenerator(rotation_range=20,
zoom_range=0.15,
width_shift_range=0.2,
height_shift_range=0.2,
shear_range=0.15,
horizontal_flip=True,
fill_mode="nearest")
means = json.loads(open(config.DATASET_MEAN).read())
sp = SimplePreprocessor(227, 227)
pp = PatchPreprocessor(227, 227)
mp = MeanPreprocessor(means['R'], means['G'], means['B'])
iap = ImageToArrayPreprocessor()
trainGen = HDF5DatasetGenerator(config.TRAIN_HDF5,
128,
aug=aug,
preprocessors=[pp, mp, iap],
classes=2)
valGen = HDF5DatasetGenerator(config.VAL_HDF5,
128,
preprocessors=[sp, mp, iap],
classes=2)
help='epoch to restart training at')
args = vars(ap.parse_args())
# construct training image generator for data augmentation
aug = ImageDataGenerator(rotation_range=18,
width_shift_range=0.2,
height_shift_range=0.2,
shear_range=0.15,
zoom_range=0.15,
horizontal_flip=True)
# load RGB means for training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize image preprocessors
sp, mp, iap = SimplePreprocessor(64, 64), MeanPreprocessor(
means['R'], means['G'], means['B']), ImageToArrayPreprocessor()
# initialize training and validation dataset generators
train_gen = HDF5DatasetGenerator(config.TRAIN_HDF5,
64,
preprocessors=[sp, mp, iap],
aug=aug,
classes=config.NUM_CLASSES)
val_gen = HDF5DatasetGenerator(config.VAL_HDF5,
64,
preprocessors=[sp, mp, iap],
aug=aug,
classes=config.NUM_CLASSES)
# if there is no specific model checkpoint supplied, initialize network and compile model
import load_cell
import RPi.GPIO as gpio
sw = 7
gpio.setwarnings(False)
gpio.setmode(gpio.BOARD)
gpio.setup(sw,gpio.IN)
# initialize the class labels
classLabels = ["beans","brinjal","chilli","tomato"]
#initialise the serial port
port = serial.Serial("/dev/ttyUSB1",baudrate=9600, timeout=1)
# initialize the image preprocessors
sp = SimplePreprocessor(100, 100)
iap = ImageToArrayPreprocessor()
# load the pre-trained network
print("[INFO] loading pre-trained network...")
port.write(bytes(("loading pre-trained network..."+"\r\n"),'UTF-8'))
model = load_model("veges.hdf5")
# loop over the sample images
while True:
inp = gpio.input(sw)
print("waiting for switch press")
if(inp ==1):
print("switch pressed")
cap = cv2.VideoCapture(0)
# dimensions to define the corners of the image based
from pyimagesearch.preprocessing import SimplePreprocessor
# # resize the image to a fixed size, ignoring the aspect ratio
from pyimagesearch.preprocessing import CropPreprocessor
# extract a random crop from the image with the target width
# and height
from pyimagesearch.preprocessing import AddChannelPreprocessor
# subtitutes G and B channel for medianblur and Canny edge map
from pyimagesearch.preprocessing import MeanPreprocessor
# subtract the means for each channel
# initialize the image preprocessors
aap = AspectAwarePreprocessor(224, 224)
iap = ImageToArrayPreprocessor()
pp = PatchPreprocessor(224, 224)
sp = SimplePreprocessor(224, 224)
cp = CropPreprocessor(224, 224)
acp = AddChannelPreprocessor(10, 20)
mp = MeanPreprocessor(1, 1, 1)
if args["model"] in ("inception", "xception"):
aap = AspectAwarePreprocessor(299, 299)
iap = ImageToArrayPreprocessor()
pp = PatchPreprocessor(299, 299)
sp = SimplePreprocessor(299, 299)
cp = CropPreprocessor(299, 299)
acp = AddChannelPreprocessor(10, 20)
from pyimagesearch.datasets import SimpleDatasetLoader
# load the image (data) and extract the class label assuming
import cv2
import json
from shutil import rmtree
from config import affectnet_config as config
from pyimagesearch.preprocessing import AspectAwarePreprocessor, ImageToArrayPreprocessor, SimplePreprocessor, MeanPreprocessor, CropPreprocessor
from keras.models import load_model
# In[3]:
images = glob('/path/to/images/jpg/A/*/*.jpg')
print('Found {} images'.format(len(images)))
# In[4]:
means = json.loads(open(config.DATASET_MEAN).read())
sp = SimplePreprocessor(227, 227)
mp = MeanPreprocessor(means['R'], means['G'], means['B'])
cp = CropPreprocessor(227, 227)
iap = ImageToArrayPreprocessor()
#load the pretrained network
model = load_model(config.MODEL_PATH)
# In[5]:
predictions = []
for image in tqdm(images[:100]):
face = face_get(image)
crop = sp.preprocess(face)
crop = mp.preprocess(crop)
crop = np.expand_dims(crop, axis=0)
return age_preds, gender_preds
# initialize dlib's face detector (HOG-based), then create facial landmark predictor and face aligner
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor(deploy.DLIB_LANDMARK_PATH)
fa = FaceAligner(predictor)
# initialize list of image paths
image_paths = [args['image']]
# if input path is directory
if os.path.isdir(args['image']):
image_paths = sorted(list(paths.list_images(args['image'])))
# initialize image preprocessors
sp, cp, iap = SimplePreprocessor(256, 256, inter=cv2.INTER_CUBIC), CropPreprocessor(config.IMAGE_SIZE, config.IMAGE_SIZE, horiz=False), ImageToArrayPreprocessor()
# loop over image paths
for image_path in image_paths:
# load image fron disk, resize it and convert it to grayscale
print(f'[INFO] processing {image_path}')
image = cv2.imread(image_path)
image = imutils.resize(image, width=1024)
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
# detect faces in grayscale image
rects = detector(gray, 1)
# loop over face detections
for rect in rects:
# determine facial landmarks for face region, then align face
def main():
"""Train AlexNet on Dogs vs Cats
"""
# construct the training image generator for data augmentation
augmentation = ImageDataGenerator(
rotation_range=20,
zoom_range=0.15,
width_shift_range=0.2,
height_shift_range=0.2,
shear_range=0.15,
horizontal_flip=True,
fill_mode="nearest",
)
# load the RGB means for the training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize the image preprocessors
simple_preprocessor = SimplePreprocessor(227, 227)
patch_preprocessor = PatchPreprocessor(227, 227)
mean_preprocessor = MeanPreprocessor(means["R"], means["G"], means["B"])
image_to_array_preprocessor = ImageToArrayPreprocessor()
# initialize the training and validation dataset generators
train_gen = HDF5DatasetGenerator(
config.TRAIN_HDF5,
128,
augmentation=augmentation,
preprocessors=[patch_preprocessor, mean_preprocessor, image_to_array_preprocessor],
classes=2,
)
val_gen = HDF5DatasetGenerator(
config.VAL_HDF5,
128,
preprocessors=[simple_preprocessor, mean_preprocessor, image_to_array_preprocessor],
classes=2,
)
# initialize the optimizer
print("[INFO] compiling model...")
opt = Adam(lr=1e-3)
model = AlexNet.build(width=227, height=227, depth=3, classes=2, regularization=0.0002)
model.compile(loss="binary_crossentropy", optimizer=opt, metrics=["accuracy"])
# construct the set of callbacks
path = os.path.sep.join([config.OUTPUT_PATH, "{}.png".format(os.getpid())])
callbacks = [TrainingMonitor(path)]
# train the network
model.fit_generator(
train_gen.generator(),
steps_per_epoch=train_gen.num_images // 128,
validation_data=val_gen.generator(),
validation_steps=val_gen.num_images // 128,
epochs=75,
max_queue_size=10,
callbacks=callbacks,
verbose=1,
)
# save the model to file
print("[INFO] serializing model...")
model.save(config.MODEL_PATH, overwrite=True)
# close the HDF5 datasets
train_gen.close()
val_gen.close()
age_mean = json.loads(open(deploy.AGE_MEAN).read())
gender_mean = json.loads(open(deploy.GENDER_MEAN).read())
# load model from disk
age_path = deploy.AGE_NETWORK_PATH
gender_path = deploy.GENDER_NETWORK_PATH
gender_model = load_model(gender_path)
agh = AgeGenderHelper(config, deploy)
one_off_mappings = agh.build_oneoff_mappings(age_le)
one_off = OneOffAccuracy(one_off_mappings)
custom_objects = {'one_off_accuracy': one_off.one_off_accuracy}
age_model = load_model(age_path, custom_objects=custom_objects)
# initialize image preprocessors
sp = SimplePreprocessor(256, 256, inter=cv2.INTER_CUBIC)
age_mp = MeanPreprocessor(age_mean['R'], age_mean['G'], age_mean['B'])
gender_mp = MeanPreprocessor(gender_mean['R'], gender_mean['G'],
gender_mean['B'])
cp = CropPreprocessor(config.IMAGE_SIZE, config.IMAGE_SIZE)
iap = ImageToArrayPreprocessor()
# initialize dlib's face detector (HOG-based), then create facial landmark predictor and face aligner
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor(deploy.DLIB_LANDMARK_PATH)
fa = FaceAligner(predictor)
for image_path in np.array(image_paths)[rows]:
path = os.path.sep.join([config.BASE_PATH, '*', f'{image_path}'])
path = glob.glob(path)[0]
# load image fron disk, resize it and convert it to grayscale
ageModel = mx.model.FeedForward.load(agePath, deploy.AGE_EPOCH)
genderModel = mx.model.FeedForward.load(genderPath, deploy.GENDER_EPOCH)
# now that the networks are loaded, we need to compile them
print("[INFO] compiling models...")
ageModel = mx.model.FeedForward(ctx=[mx.gpu(0)],
symbol=ageModel.symbol,
arg_params=ageModel.arg_params,
aux_params=ageModel.aux_params)
genderModel = mx.model.FeedForward(ctx=[mx.gpu(0)],
symbol=genderModel.symbol,
arg_params=genderModel.arg_params,
aux_params=genderModel.aux_params)
# initialize the image pre-processors
sp = SimplePreprocessor(width=256, height=256, inter=cv2.INTER_CUBIC)
cp = CropPreprocessor(width=227, height=227, horiz=True)
ageMP = MeanPreprocessor(ageMeans["R"], ageMeans["G"], ageMeans["B"])
genderMP = MeanPreprocessor(genderMeans["R"], genderMeans["G"],
genderMeans["B"])
iap = ImageToArrayPreprocessor(dataFormat="channels_first")
# initialize dlib's face detector (HOG-based), then create the
# the facial landmark predictor and face aligner
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor(deploy.DLIB_LANDMARK_PATH)
fa = FaceAligner(predictor)
# if a video path was not supplied, grab the reference to the webcam
if not args.get("video", False):
camera = VideoStream(src=0, usePiCamera=False).start()
deploy.GENDER_PREFIX])
ageModel = mx.model.FeedForward.load(agePath, deploy.AGE_EPOCH)
genderModel = mx.model.FeedForward.load(genderPath,
deploy.GENDER_EPOCH)
# now that the networks are loaded, we need to compile them
print("[INFO] compiling models...")
ageModel = mx.model.FeedForward(ctx=[mx.gpu(0)],
symbol=ageModel.symbol, arg_params=ageModel.arg_params,
aux_params=ageModel.aux_params)
genderModel = mx.model.FeedForward(ctx=[mx.gpu(0)],
symbol=genderModel.symbol, arg_params=genderModel.arg_params,
aux_params=genderModel.aux_params)
# initialize the image pre-processors
sp = SimplePreprocessor(width=227, height=227, inter=cv2.INTER_CUBIC)
ageMP = MeanPreprocessor(ageMeans["R"], ageMeans["G"],
ageMeans["B"])
genderMP = MeanPreprocessor(genderMeans["R"], genderMeans["G"],
genderMeans["B"])
iap = ImageToArrayPreprocessor()
# load a sample of testing images
rows = open(config.TEST_MX_LIST).read().strip().split("\n")
rows = np.random.choice(rows, size=args["sample_size"])
# loop over the rows
for row in rows:
# unpack the row
(_, gtLabel, imagePath) = row.strip().split("\t")
image = cv2.imread(imagePath)
from pyimagesearch.io import HDF5DatasetGenerator
from pyimagesearch.utils.ranked import rank5_accuracy
from keras.models import load_model
import progressbar
import numpy as np
import os
import json
# load model
model = load_model(config.MODEL_PATH)
# load means of R, G, B
means = json.loads(open(config.DATASET_MEAN).read())
# initialize preprocessors
sp, mp, cp, iap = SimplePreprocessor(227, 227), MeanPreprocessor(
means['R'], means['G'],
means['B']), CropPreprocessor(227, 227), ImageToArrayPreprocessor()
# initialize test generator for evaluting without cropping
test_gen = HDF5DatasetGenerator(config.TEST_HDF5,
preprocessors=[sp, mp, iap],
batch_size=128)
print('[INFO] evaluating model without cropping...')
preds = model.predict_generator(test_gen.generator(),
steps=test_gen.num_images // 128)
rank_1, _ = rank5_accuracy(preds, test_gen.db['labels'])
print(f'[INFO] rank-1: f{rank_1*100:.2f}')
# close test_gen
test_gen.close()
from sklearn.metrics import f1_score
# construct the training image generator for data augmentation
aug = ImageDataGenerator(rotation_range=10,
zoom_range=0.05,
width_shift_range=0.05,
height_shift_range=0.05,
shear_range=0.05,
horizontal_flip=True,
fill_mode="nearest")
# load the RGB means for the training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize the image preprocessors
sp = SimplePreprocessor(IMAGE_WIDTH, IMAGE_HEIGHT)
pp = PatchPreprocessor(IMAGE_WIDTH, IMAGE_HEIGHT)
mp = MeanPreprocessor(means["R"], means["G"], means["B"])
iap = ImageToArrayPreprocessor()
# initialize the training and validation dataset generators
if NUM_CLASSES:
trainGen = HDF5DatasetGenerator(TRAIN_HDF5,
config.BATCH_SIZE,
aug=aug,
preprocessors=[sp, mp, iap],
classes=NUM_CLASSES)
valGen = HDF5DatasetGenerator(config.TEST_HDF5,
config.BATCH_SIZE,
preprocessors=[sp, mp, iap],
classes=NUM_CLASSES)
def main():
"""Train ResNet
"""
# construct the argument parse and parse the arguments
args = argparse.ArgumentParser()
args.add_argument("-c",
"--checkpoints",
required=True,
help="path to output checkpoint directory")
args.add_argument("-m",
"--model",
type=str,
help="path to *specific* model checkpoint to load")
args.add_argument("-s",
"--start-epoch",
type=int,
default=0,
help="epoch to restart training at")
args = vars(args.parse_args())
# construct the training image generator for data augmentation
aug = ImageDataGenerator(
rotation_range=18,
zoom_range=0.15,
width_shift_range=0.2,
height_shift_range=0.2,
shear_range=0.15,
horizontal_flip=True,
fill_mode="nearest",
)
# load the RGB means for the training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize the image preprocessors
simple_preprocessor = SimplePreprocessor(64, 64)
mean_preprocessor = MeanPreprocessor(means["R"], means["G"], means["B"])
image_to_array_preprocessor = ImageToArrayPreprocessor()
# initialize the training and validation dataset generators
train_gen = HDF5DatasetGenerator(
config.TRAIN_HDF5,
64,
augmentation=aug,
preprocessors=[
simple_preprocessor, mean_preprocessor, image_to_array_preprocessor
],
classes=config.NUM_CLASSES,
)
val_gen = HDF5DatasetGenerator(
config.VAL_HDF5,
64,
preprocessors=[
simple_preprocessor, mean_preprocessor, image_to_array_preprocessor
],
classes=config.NUM_CLASSES,
)
# if there is no specific model checkpoint supplied, then initialize
# the network and compile the model
if args["model"] is None:
print("[INFO] compiling model...")
model = ResNet.build(64,
64,
3,
config.NUM_CLASSES, (3, 4, 6),
(64, 128, 256, 512),
reg=0.0005,
dataset="tiny_imagenet")
opt = SGD(lr=1e-1, momentum=0.9)
model.compile(loss="categorical_crossentropy",
optimizer=opt,
metrics=["accuracy"])
# otherwise, load the checkpoint from disk
else:
print("[INFO] loading {}...".format(args["model"]))
model = load_model(args["model"])
# update the learning rate
print("[INFO] old learning rate: {}".format(
K.get_value(model.optimizer.lr)))
K.set_value(model.optimizer.lr, 1e-5)
print("[INFO] new learning rate: {}".format(
K.get_value(model.optimizer.lr)))
# construct the set of callbacks
callbacks = [
EpochCheckpoint(args["checkpoints"],
every=5,
start_at=args["start_epoch"]),
TrainingMonitor(config.FIG_PATH,
json_path=config.JSON_PATH,
start_at=args["start_epoch"]),
]
# train the network
model.fit_generator(
train_gen.generator(),
steps_per_epoch=train_gen.num_images // 64,
validation_data=val_gen.generator(),
validation_steps=val_gen.num_images // 64,
epochs=50,
max_queue_size=10,
callbacks=callbacks,
verbose=1,
)
# close the databases
train_gen.close()
val_gen.close()
# load model from disk
custom_objects = None
age_path = deploy.AGE_NETWORK_PATH
gender_path = deploy.GENDER_NETWORK_PATH
gender_model = load_model(gender_path)
agh = AgeGenderHelper(config, deploy)
one_off_mappings = agh.build_oneoff_mappings(age_le)
one_off = OneOffAccuracy(one_off_mappings)
custom_objects = {'one_off_accuracy': one_off.one_off_accuracy}
age_model = load_model(age_path, custom_objects=custom_objects)
# initialize image preprocessors
sp = SimplePreprocessor(256, 256, inter=cv2.INTER_CUBIC)
age_mp = MeanPreprocessor(age_means['R'], age_means['G'], age_means['B'])
gender_mp = MeanPreprocessor(gender_means['R'], gender_means['G'],
gender_means['B'])
cp = CropPreprocessor(227, 227)
iap = ImageToArrayPreprocessor()
# initialize dlib's face detector (HOG-based), then create facial landmark predictor and face aligner
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor(deploy.DLIB_LANDMARK_PATH)
fa = FaceAligner(predictor)
# keep looping
while True:
# get the current frame
grabbed, frame = camera.read()
def main():
"""Evaluate AlexNet on Cats vs. Dogs
"""
# load the RGB means for the training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize the image preprocessors
simple_preprocessor = SimplePreprocessor(227, 227)
mean_preprocessor = MeanPreprocessor(means["R"], means["G"], means["B"])
crop_preprocessor = CropPreprocessor(227, 227)
image_to_array_preprocessor = ImageToArrayPreprocessor()
# load the pretrained network
print("[INFO] loading model...")
model = load_model(config.MODEL_PATH)
# initialize the testing dataset generator, then make predictions on the testing data
print("[INFO] predicting on test data (no crops)...")
test_gen = HDF5DatasetGenerator(config.TEST_HDF5,
64,
preprocessors=[
simple_preprocessor, mean_preprocessor,
image_to_array_preprocessor
],
classes=2)
predictions = model.predict_generator(test_gen.generator(),
steps=test_gen.num_images // 64,
max_queue_size=10)
# compute the rank-1 and rank-5 accuracies
(rank1, _) = rank5_accuracy(predictions, test_gen.database["labels"])
print("[INFO] rank-1: {:.2f}%".format(rank1 * 100))
test_gen.close()
# re-initialize the testing set generator, this time excluding the `SimplePreprocessor`
test_gen = HDF5DatasetGenerator(config.TEST_HDF5,
64,
preprocessors=[mean_preprocessor],
classes=2)
predictions = []
# initialize the progress bar
widgets = [
"Evaluating: ",
progressbar.Percentage(), " ",
progressbar.Bar(), " ",
progressbar.ETA()
]
progress_bar = progressbar.ProgressBar(maxval=test_gen.num_images // 64,
widgets=widgets).start()
# loop over a single pass of the test data
# passes=1 to indicate the testing data only needs to be looped over once
for (i, (images, _)) in enumerate(test_gen.generator(passes=1)):
# loop over each of the individual images
for image in images:
# apply the crop preprocessor to the image to generate 10
# separate crops, then convert them from images to arrays
crops = crop_preprocessor.preprocess(image)
crops = np.array(
[image_to_array_preprocessor.preprocess(c) for c in crops],
dtype="float32")
# make predictions on the crops and then average them
# together to obtain the final prediction
pred = model.predict(crops)
predictions.append(pred.mean(axis=0))
# update the progress bar
progress_bar.update(i)
# compute the rank-1 accuracy
progress_bar.finish()
print("[INFO] predicting on test data (with crops)...")
(rank1, _) = rank5_accuracy(predictions, test_gen.database["labels"])
print("[INFO] rank-1: {:.2f}%".format(rank1 * 100))
test_gen.close()
def main():
"""Train Resnet on TinyImageNet dataset
"""
# construct the argument parse and parse the arguments
args = argparse.ArgumentParser()
args.add_argument("-m",
"--model",
required=True,
help="path to output model")
args.add_argument("-o",
"--output",
required=True,
help="path to output directory (logs, plots, etc.)")
args = vars(args.parse_args())
# construct the training image generator for data augmentation
aug = ImageDataGenerator(
rotation_range=18,
zoom_range=0.15,
width_shift_range=0.2,
height_shift_range=0.2,
shear_range=0.15,
horizontal_flip=True,
fill_mode="nearest",
)
# load the RGB means for the training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize the image preprocessors
simple_preprocessor = SimplePreprocessor(64, 64)
mean_preprocessor = MeanPreprocessor(means["R"], means["G"], means["B"])
image_to_array_preprocessor = ImageToArrayPreprocessor()
# initialize the training and validation dataset generators
train_gen = HDF5DatasetGenerator(
config.TRAIN_HDF5,
64,
augmentation=aug,
preprocessors=[
simple_preprocessor, mean_preprocessor, image_to_array_preprocessor
],
classes=config.NUM_CLASSES,
)
val_gen = HDF5DatasetGenerator(
config.VAL_HDF5,
64,
preprocessors=[
simple_preprocessor, mean_preprocessor, image_to_array_preprocessor
],
classes=config.NUM_CLASSES,
)
# construct the set of callbacks
fig_path = os.path.sep.join([args["output"], "{}.png".format(os.getpid())])
json_path = os.path.sep.join(
[args["output"], "{}.json".format(os.getpid())])
callbacks = [
TrainingMonitor(fig_path, json_path=json_path),
LearningRateScheduler(poly_decay)
]
# initialize the optimizer and model (ResNet-56)
print("[INFO] compiling model...")
model = ResNet.build(64,
64,
3,
config.NUM_CLASSES, (3, 4, 6), (64, 128, 256, 512),
reg=0.0005,
dataset="tiny_imagenet")
opt = SGD(lr=INIT_LR, momentum=0.9)
model.compile(loss="categorical_crossentropy",
optimizer=opt,
metrics=["accuracy"])
# train the network
print("[INFO] training network...")
model.fit_generator(
train_gen.generator(),
steps_per_epoch=train_gen.num_images // 64,
validation_data=val_gen.generator(),
validation_steps=val_gen.num_images // 64,
epochs=NUM_EPOCHS,
max_queue_size=10,
callbacks=callbacks,
verbose=1,
)
# save the network to disk
print("[INFO] serializing network...")
model.save(args["model"])
# close the databases
train_gen.close()
val_gen.close()
from pyimagesearch.io import HDF5DatasetGenerator from pyimagesearch.preprocessing import SimplePreprocessor, MeanPreprocessor, PatchPreprocessor from config import plant_seedlings_config as config from pyimagesearch.nn.conv import AlexNet from keras.preprocessing.image import ImageDataGenerator import json import pickle mean = json.loads(open(config.DATASET_MEAN).read()) le = pickle.loads(open(config.LABEL_MAPPINGS, 'rb').read()) sp, mp, pp = SimplePreprocessor(224, 224), MeanPreprocessor(mean['R'], mean['G'], mean['B']), PatchPreprocessor(224, 224) aug = ImageDataGenerator(rotation_range=30, width_shift_range=0.1, height_shift_range=0.1, shear_range=0.15, zoom_range=0.1, horizontal_flip=True) train_gen = HDF5DatasetGenerator(config.TRAIN_HDF5, preprocessors=[pp, mp], aug=aug, batch_size=64, num_classes=len(le.classes_)) val_gen = HDF5DatasetGenerator(config.VAL_HDF5, preprocessors=[sp, mp], aug=aug, batch_size=64, num_classes=len(le.classes_)) model = AlexNet.build(224, 224, 3, len(le.classes_)) model.compile(optimizer='adam', loss='categorical_crossentropy', metrics=['accuracy']) model.fit(train_gen.generator(), steps_per_epoch=train_gen.num_images//64, epochs=100, verbose=2, )
import numpy as np
import matplotlib.pyplot as plt
from imutils import paths
# Construct argument parser and parse argument
ap = argparse.ArgumentParser()
ap.add_argument('-d', '--dataset', required=True, help='path to input dataset')
ap.add_argument('-m', '--model', required=True, help='path to output model')
args = vars(ap.parse_args())
# grab the images list
print('[INFO] loading images...')
image_paths = list(paths.list_images(args['dataset']))
# initialize preprocessors
sp, iap = SimplePreprocessor(32, 32), ImageToArrayPreprocessor()
# load dataset and scale raw image to range [0, 1]
sdl = SimpleDatasetLoader([sp, iap])
data, labels = sdl.load(image_paths, verbose=500)
data = data.astype('float') / 255
# partition data
trainX, testX, trainY, testY = train_test_split(data,
labels,
test_size=0.25,
random_state=42)
# Convert labels to vector
lb = LabelBinarizer()
trainY = lb.fit_transform(trainY)
class GenderRecognizer:
# load the label encoders and mean files
print("[INFO] loading label encoders and mean files...")
ageLE = pickle.loads(open(deploy.AGE_LABEL_ENCODER, "rb").read())
genderLE = pickle.loads(open(deploy.GENDER_LABEL_ENCODER, "rb").read())
ageMeans = json.loads(open(deploy.AGE_MEANS).read())
genderMeans = json.loads(open(deploy.GENDER_MEANS).read())
# load the models from disk
print("[INFO] loading models...")
agePath = os.path.sep.join([deploy.AGE_NETWORK_PATH, deploy.AGE_PREFIX])
genderPath = os.path.sep.join(
[deploy.GENDER_NETWORK_PATH, deploy.GENDER_PREFIX])
ageModel = mx.model.FeedForward.load(agePath, deploy.AGE_EPOCH)
genderModel = mx.model.FeedForward.load(genderPath, deploy.GENDER_EPOCH)
# now that the networks are loaded, we need to compile them
print("[INFO] compiling models...")
ageModel = mx.model.FeedForward(ctx=[mx.gpu(0)],
symbol=ageModel.symbol,
arg_params=ageModel.arg_params,
aux_params=ageModel.aux_params)
genderModel = mx.model.FeedForward(ctx=[mx.gpu(0)],
symbol=genderModel.symbol,
arg_params=genderModel.arg_params,
aux_params=genderModel.aux_params)
# initialize the image pre-processors
sp = SimplePreprocessor(width=256, height=256, inter=cv2.INTER_CUBIC)
cp = CropPreprocessor(width=227, height=227, horiz=True)
ageMP = MeanPreprocessor(ageMeans["R"], ageMeans["G"], ageMeans["B"])
genderMP = MeanPreprocessor(genderMeans["R"], genderMeans["G"],
genderMeans["B"])
iap = ImageToArrayPreprocessor(dataFormat="channels_first")
def __init__(self):
# initialize dlib's face detector (HOG-based), then create the
# the facial landmark predictor and face aligner
self.detector = dlib.get_frontal_face_detector()
self.predictor = dlib.shape_predictor(deploy.DLIB_LANDMARK_PATH)
self.fa = FaceAligner(self.predictor)
def recognize(self, face):
# resize the face to a fixed size, then extract 10-crop
# patches from it
face = self.sp.preprocess(face)
patches = self.cp.preprocess(face)
# allocate memory for the age and gender patches
agePatches = np.zeros((patches.shape[0], 3, 227, 227), dtype="float")
genderPatches = np.zeros((patches.shape[0], 3, 227, 227),
dtype="float")
# loop over the patches
for j in np.arange(0, patches.shape[0]):
# perform mean subtraction on the patch
agePatch = self.ageMP.preprocess(patches[j])
genderPatch = self.genderMP.preprocess(patches[j])
agePatch = self.iap.preprocess(agePatch)
genderPatch = self.iap.preprocess(genderPatch)
# update the respective patches lists
agePatches[j] = agePatch
genderPatches[j] = genderPatch
# make predictions on age and gender based on the extracted
# patches
agePreds = self.ageModel.predict(agePatches)
genderPreds = self.genderModel.predict(genderPatches)
# compute the average for each class label based on the
# predictions for the patches
agePreds = agePreds.mean(axis=0)
genderPreds = genderPreds.mean(axis=0)
# visualize the age and gender predictions
age = GenderRecognizer.visAge(agePreds, self.ageLE)
gender = GenderRecognizer.visGender(genderPreds, self.genderLE)
image_to_show_path_GA = "images/{}/{}".format(gender, age)
return image_to_show_path_GA
@staticmethod
def visAge(agePreds, le):
# initialize the canvas and sort the predictions according
# to their probability
idxs = np.argsort(agePreds)[::-1]
# construct the text for the prediction
#ageLabel = le.inverse_transform(j) # Python 2.7
ageLabel = le.inverse_transform(idxs[0]).decode("utf-8")
ageLabel = ageLabel.replace("_", "-")
ageLabel = ageLabel.replace("-inf", "+")
age = "{}".format(ageLabel)
return age
@staticmethod
def visGender(genderPreds, le):
idxs = np.argsort(genderPreds)[::-1]
gender = le.inverse_transform(idxs[0])
gender = "Male" if gender == 0 else "Female"
text_gender = "{}".format(gender)
return text_gender
# rank_accuracy.py
import json
from keras.models import load_model
from config import tiny_imagenet_config as config
from pyimagesearch.io import HDF5DatasetGenerator
from pyimagesearch.utils.ranked import rank5_accuracy
from pyimagesearch.preprocessing import MeanPreprocessor
from pyimagesearch.preprocessing import SimplePreprocessor
from pyimagesearch.preprocessing import ImageToArrayPreprocessor
# load the RGB means for the training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize the image preprocessors
sp = SimplePreprocessor(64, 64)
mp = MeanPreprocessor(means["R"], means["G"], means["B"])
iap = ImageToArrayPreprocessor()
# initialize the testing dataset generator
testGen = HDF5DatasetGenerator(config.TEST_HDF5,
64,
preprocessors=[sp, mp, iap],
classes=config.NUM_CLASSES)
# load the pre-trained network
print("[INFO] loading model...")
model = load_model(config.MODEL_PATH)
# make predictions on testing data
print("[INFO] predicting on test data...")
rotation_range=30,
zoom_range=0.2,
width_shift_range=0.2,
height_shift_range=0.2,
shear_range=0.1,
horizontal_flip=True,
fill_mode="nearest")
aug2 = ImageDataGenerator(preprocessing_function=xception.preprocess_input)
# # open the HDF5 database for reading then determine the index of
# # the training and testing split, provided that this data was
# # already shuffled *prior* to writing it to disk
# db = h5py.File(config.TRAIN_HDF5, "r")
# print(db["label_names"], len(db["label_names"]))
sp = SimplePreprocessor(299, 299)
iap = ImageToArrayPreprocessor()
# initialize the training and validation dataset generators
trainGen = HDF5DatasetGenerator(config.TRAIN_HDF5,
32,
aug=aug,
preprocessors=[sp, iap],
classes=config.NUM_CLASSES,
set="train")
valGen = HDF5DatasetGenerator(config.TRAIN_HDF5,
32,
aug=aug2,
preprocessors=[sp, iap],
classes=config.NUM_CLASSES,
set="val")
from pyimagesearch.datasets import SimpleDatasetLoader
from imutils import paths
import argparse
# construct the argument parse and parse the arguments
ap = argparse.ArgumentParser()
ap.add_argument("-d", "--dataset", required=True, help="path to input dataset")
args = vars(ap.parse_args())
# grab the list of image paths
print("[INFO] loading images...")
imgPaths = list(paths.list_images(args["dataset"]))
# initialize the image preprocessor, load the dataset from disk,
# and reshape the data matrix
sp = SimplePreprocessor(32, 32)
sdl = SimpleDatasetLoader(preprocessors=[sp])
(data, labels) = sdl.load(imagePaths=imgPaths, verbose=500)
data = data.reshape((data.shape[0], 3072))
# encode the labels as integers
le = LabelEncoder()
labels = le.fit_transform(labels)
# partition the data into training and testing splits using 75%
# of the data for training and the remaining 25% for testing
(trainX, testX, trainY, testY) = train_test_split(data,
labels,
test_size=0.25,
random_state=5)
from config import tiny_imagenet_config as config
from pyimagesearch.preprocessing import ImageToArrayPreprocessor, MeanPreprocessor, SimplePreprocessor
from pyimagesearch.utils.ranked import rank5_accuracy
from pyimagesearch.io import HDF5DatasetGenerator
from keras.models import load_model
import json
# load RGB means for the training set
means = json.loads(open(config.DATASET_MEAN).read())
# initialize image preprocessors
sp, mp, iap = SimplePreprocessor(64, 64), MeanPreprocessor(means['R'], means['G'], means['G']), ImageToArrayPreprocessor()
# initialize testing dataset generator
test_gen = HDF5DatasetGenerator(config.TEST_HDF5, 64, preprocessors=[sp, mp, iap], classes=config.NUM_CLASSES)
# load pre-trained network
print('[INFO] loading network...')
model = load_model(config.MODEL_PATH)
print('[INFO] predicting on test data...')
preds = model.predict_generator(test_gen.generator(), steps=test_gen.num_images//64)
# compute rank-1 and rank-5 accuracies
rank_1, rank_5 = rank5_accuracy(preds, test_gen.db['labels'])
print(f'[INFO] rank-1: {rank_1*100:.2f}')
print(f'[INFO] rank-5: {rank_5*100:.2f}')
# close dataset
test_gen.close()
