def predict(image1):
model = VGG16()
image = load_img(image1, target_size=(224, 224))
# convert the image pixels to a numpy array
image = img_to_array(image)
# reshape data for the model
image = image.reshape((1, image.shape[0], image.shape[1], image.shape[2]))
# prepare the image for the VGG model
image = preprocess_input(image)
# predict the probability across all output classes
yhat = model.predict(image)
# convert the probabilities to class labels
label = decode_predictions(yhat)
# retrieve the most likely result, e.g. highest probability
label = label[0][0]
return label
def run(self, image):
"""Computes feature relevance maps for a single image.
Args:
image: array of shape (W, H, C)
Returns:
RGB or grayscale relevance map.
"""
f = K.function(inputs=self.model.input, outputs=self.relevance)
image = preprocess_input(image)
image = tf.expand_dims(image, axis=0)
relevance_scores = f(inputs=image)
relevance_scores = self.postprocess(relevance_scores)
return np.squeeze(relevance_scores)
def extract_features(filename):
# load the model
model = VGG16()
# re-structure the model
model = Model(inputs=model.inputs, outputs=model.layers[-2].output)
# load the photo
image = load_img(filename, target_size=(224, 224))
# convert the image pixels to a numpy array
image = img_to_array(image)
# reshape data for the model
image = image.reshape((1, image.shape[0], image.shape[1], image.shape[2]))
# prepare the image for the VGG model
image = preprocess_input(image)
# get features
feature = model.predict(image, verbose=0)
return feature
def preprocess_image(self, img_path):
if self.method == "v0":
FIXED_SIZE = (96, 96) # self-adjusted vgg16
#FIXED_SIZE = (224, 224) # vgg16-default
elif self.method == "v1":
FIXED_SIZE = (299, 299) # xception-default
elif self.method == "v2":
FIXED_SIZE = (224, 224) # resnet-default
cv_img = cv2.imread(img_path)
cv_img = cv2.resize(cv_img,
FIXED_SIZE,
interpolation=cv2.INTER_NEAREST)
cv_img = np.expand_dims(cv_img, axis=0)
cv_img = preprocess_input(cv_img)
return cv_img
def build_data(self):
print(self.n, " Image Loading start... ", self.img_dirpath)
for i, img_file in enumerate(self.img_dir):
img = image.load_img(self.img_dirpath + img_file,
target_size=SIZE[::-1],
interpolation='bicubic')
img = image.img_to_array(img)
img = preprocess_input(img)
self.imgs[i] = img
if self.labels != None:
self.texts.append(self.labels[img_file][:MAX_LEN])
else:
#valid mode
self.texts.append(img_file)
print("Image Loading finish...")
def extract(self, img):
"""
Extract a deep feature from an input image
Args:
img: from PIL.Image.open(path) or tensorflow.keras.preprocessing.image.load_img(path)
Returns:
feature (np.ndarray): deep feature with the shape=(4096, )
"""
img = img.resize((224, 224)) # VGG must take a 224x224 img as an input
img = img.convert('RGB') # Make sure img is color
x = image.img_to_array(img) # To np.array. Height x Width x Channel. dtype=float32
x = np.expand_dims(x, axis=0) # (H, W, C)->(1, H, W, C), where the first elem is the number of img
x = preprocess_input(x) # Subtracting avg values for each pixel
feature = self.model.predict(x)[0] # (1, 4096) -> (4096, )
return feature / np.linalg.norm(feature) # Normalize
def get_pred_df(self):
"""
预测数据
"""
te_dt, _ = get_data(self.te_jpg)
te_dt = te_dt.astype('float32') / 255
if self.vgg16:
print('Start dealing with vgg16')
te_dt = preprocess_input(te_dt) # 预处理(减去均值)
te_dt = self.vgg16_model.predict(te_dt)
print('start predict')
pred_te = np.argmax(self.model.predict(te_dt), axis=1)
df = pd.DataFrame({'ID': self.te_id, 'Label': pred_te})
df.Label = df.Label.map({1: 'pos', 0: 'neg'})
return df
def get_image_description(image_path):
"""
uses VGG16 neural-network to get image description.
the description will be used to generate more suited comments.
:param image_path: media item to get description of
:return: image description (string)
"""
im_array = img_to_array(
load_img(image_path, color_mode="rgb", target_size=(224, 224)))
shape = (1, ) + im_array.shape
image_data = preprocess_input(im_array.reshape(shape))
prediction = VGG16().predict(image_data)
labels = decode_predictions(prediction)
labels = [(label[1], label[2]) for label in labels[0]]
print("description confident=", labels[0][1])
return (labels[0][0]).replace("_", " ")
def parse_function(example_proto):
feature = {
'image/height': tf.FixedLenFeature((), tf.int64, -1),
'image/width': tf.FixedLenFeature((), tf.int64, -1),
'image/filename': tf.FixedLenFeature((), tf.string, default_value=''),
'image/source_id': tf.FixedLenFeature((), tf.string, default_value=''),
'image/key/sha256': tf.FixedLenFeature((), tf.string,
default_value=''),
'image/encoded': tf.FixedLenFeature((), tf.string, default_value=''),
'image/format': tf.FixedLenFeature((), tf.string,
default_value='jpeg'),
'image/object/bbox/xmin': tf.VarLenFeature(dtype=tf.float32),
'image/object/bbox/xmax': tf.VarLenFeature(dtype=tf.float32),
'image/object/bbox/ymin': tf.VarLenFeature(dtype=tf.float32),
'image/object/bbox/ymax': tf.VarLenFeature(dtype=tf.float32),
'image/object/class/text': tf.VarLenFeature(tf.string),
'image/object/class/label': tf.VarLenFeature(tf.int64),
'image/object/difficult': tf.VarLenFeature(tf.int64),
}
parsed_features = tf.parse_single_example(example_proto, feature)
file = tf.string_join([dir_head, parsed_features["image/filename"]])
x = parsed_features['image/object/bbox/xmax'].values - parsed_features[
'image/object/bbox/xmin'].values
y = parsed_features['image/object/bbox/ymax'].values - parsed_features[
'image/object/bbox/ymin'].values
area = tf.math.multiply(x, y)
index = tf.math.argmax(area)
image_string = tf.read_file(file)
image = tf.image.decode_image(image_string, channels=3, dtype=tf.uint8)
image.set_shape([None, None, None])
fwidth = tf.to_float(parsed_features["image/width"])
fheight = tf.to_float(parsed_features["image/height"])
hgap = (500 - fwidth) / 2
vgap = (500 - fheight) / 2
nxmin = (parsed_features["image/object/bbox/xmin"].values[index] * fwidth +
hgap) / 500.0
nxmax = (parsed_features["image/object/bbox/xmax"].values[index] * fwidth +
hgap) / 500.0
nymin = (parsed_features["image/object/bbox/ymin"].values[index] * fheight
+ vgap) / 500.0
nymax = (parsed_features["image/object/bbox/ymax"].values[index] * fheight
+ vgap) / 500.0
image = tf.image.resize_image_with_crop_or_pad(image, 500, 500)
image = preprocess_input(image)
#label = tf.cast(parsed_features["image/object/class/label"], tf.float32)
#label = tf.cast(tf.reshape(parsed_features["image/object/class/label"], shape=[]), dtype=tf.int32)
return {'vgg16_input': image}, [nxmin, nxmax, nymin, nymax]
def main(argv):
image_path = '../ILSVRC2012_devkit_t12/image/'
model = VGG16(weights='imagenet', include_top=True)
#test_dog_picture()
result_file = open("val.txt", "r")
correct_num = 0
num_images = 1000
topk = 5
filename = tf.placeholder(tf.string, name="inputFile")
fileContent = tf.read_file(filename, name="loadFile")
image_file = tf.image.decode_jpeg(fileContent,
channels=3,
name="decodeJpeg")
resize_nearest_neighbor = tf.image.resize_images(
image_file,
size=[224, 224],
method=tf.image.ResizeMethod.NEAREST_NEIGHBOR)
sess = tf.Session()
suffix = '%(index)d/%(max)d [%(elapsed)d / %(eta)d / %(eta_td)s]'
bar = IncrementalBar('Processing', max=num_images, suffix=suffix)
rram_crossbar = Rram_weights(8, 300)
l_weights = model.get_weights()
iterate_list(l_weights, rram_crossbar)
model.set_weights(l_weights)
for i in range(1, num_images + 1):
img_file = "{}{}{:0>8d}{}".format(image_path, "ILSVRC2012_val_", i,
".JPEG")
feed_dict = {filename: img_file}
with sess.as_default():
x = resize_nearest_neighbor.eval(feed_dict)
x = np.expand_dims(x, axis=0)
x = preprocess_input(x)
features = model.predict(x)
#result = np.argmax(features)
result = np.argsort(features)[0][-topk:]
result_line = result_file.readline()
correct_result = int(result_line.split()[1])
#print(correct_result, result)
if (correct_result in result): correct_num += 1
#else: print(img_file)
bar.next()
bar.finish()
#resized_images.save("picture_resized.jpeg", "JPEG", optimize=True)
print("Accuracy: {0:.2f}%".format(float(correct_num) / num_images * 100))
def extract_features():
vgg_model = VGG16()
model = Sequential()
for layer in vgg_model.layers[:-1]: # this is where I changed your code
model.add(layer)
for layer in model.layers:
layer.trainable = False
#model.layers.pop()
model = Model(inputs=model.inputs, outputs=model.layers[-1].output)
image = load_img('test2.jpg', target_size=(224, 224))
image = img_to_array(image)
image = image.reshape((1, image.shape[0], image.shape[1], image.shape[2]))
image = preprocess_input(image)
feature = model.predict(image, verbose=0)
feature = np.reshape(feature, (1, 4096))
return feature
def predict(image1):
model = VGG16()
image = load_img(image1, target_size=(224, 224))
# pixels -> numpy array
image = img_to_array(image)
# reshape data
image = image.reshape((1, image.shape[0], image.shape[1], image.shape[2]))
# prepare for VGG model
image = preprocess_input(image)
# predict
yhat = model.predict(image)
# convert
label = decode_predictions(yhat)
# retrieve result (hotdog or not hotdog)
label = label[0][0]
return label
identify(label)
def make_prediction(image_ids, model, word_to_ind, ind_to_word):
"""
Function to make a caption prediction for a list of image ids
Parameters
----------
image_ids: list
list of path to images
model: Keras Model
trained model to make the caption prediction
word_to_ind: dict
mapping of word to index
ind_to_word: dict
mapping of index to word
Returns
-------
predictions: list
List of lists corresponding to captions for each image
"""
predictions = []
vgg_model = preprocess_images.load_prebuilt_model()
maxlen = model.input_shape[1][1]
for ii in image_ids:
prediction = []
print('Predicting image: ' + str(ii))
example = image.load_img(ii, target_size=(224, 224))
example_arr = image.img_to_array(example, dtype='float32')
example_arr = np.expand_dims(example_arr, axis=0)
example_arr = preprocess_input(example_arr)
example_features = vgg_model.predict(example_arr)
example_features = np.array(example_features).reshape(-1, 4096)
start_string = ['*start*']
start_ind = list(map(word_to_ind.get, start_string))
for i in range(maxlen):
start_seq = pad_sequences([start_ind], maxlen)
yhat = model.predict([example_features, start_seq])
yhat = np.argmax(yhat)
if ind_to_word[yhat] == '*end*':
break
prediction.append(ind_to_word[yhat])
start_ind.append(yhat)
predictions.append(prediction)
return predictions
def process_stimuli_dir(stimuli_dir):
image_files = []
for f in listdir(stimuli_dir):
if isdir("{}/{}".format(stimuli_dir, f)):
cat_images = []
for f2 in listdir("{}/{}".format(stimuli_dir, f)):
if isfile("{}/{}/{}".format(stimuli_dir, f, f2)):
img = image.load_img("{}/{}/{}".format(
stimuli_dir, f, f2),
target_size=(224, 224))
x = image.img_to_array(img)
x = np.expand_dims(x, axis=0)
x = preprocess_input(x)
cat_images.append(x[0])
image_files.append(cat_images)
return np.array(image_files)
def model_predict(img, model):
img = img.resize((224, 224))
# Preprocessing the image
x = image.img_to_array(img)
# x = np.true_divide(x, 255)
# x = np.expand_dims(x, axis=0)
# Be careful how your trained model deals with the input
# otherwise, it won't make correct prediction!
#x = preprocess_input(x, mode='tf')
x = preprocess_input(x)
x = x.reshape(1,224,224,3)
preds = model.predict(x)
return preds
def get_data(start=0, end=10):
# ***************************
# per file
# ***************************
feature_list = []
file_paths_in = []
file_names_in = []
file_classes = [] # the subdir name i.e. C7-Maine_coon
for subdir in SUBDIRS:
try:
file_names = os.listdir(f"{DATA_BASEPATH}/{subdir}")
for file_name in file_names[start:end]:
image_path = f"{DATA_BASEPATH}/{subdir}/{file_name}"
# **********
# corresponding lists for later prediction/evaluation (not necessary for train)
# **********
file_paths_in.append(image_path)
file_names_in.append(file_name)
file_classes.append(subdir)
# **********
# get array representation of image
# **********
img = image.load_img(
image_path, target_size=SHAPE[:2]
) # corresponds with input_shape of vgg16 model
img_data = image.img_to_array(img)
img_data = np.expand_dims(img_data, axis=0)
img_data = preprocess_input(img_data)
# **********
# get vgg16 features of image
# **********
features = model_vgg16.predict(img_data)
features = np.array(features)
feature_list.append(features.flatten())
except:
continue
feature_list = np.array(feature_list)
return feature_list, file_paths_in, file_names_in, file_classes
def prepare_image(self, aurl, mean, std):
img = np.array(
Image.open(cStringIO.StringIO(urllib.urlopen(aurl).read())))
# wsi_mean_std = self.find_mean_std(slide)
img_norm = self.reinhard(img, self.REFERENCE_MU_LAB,
self.REFERENCE_STD_LAB, mean, std)
img_norm = img_to_array(imresize(img_norm, self.IMAGE_SHAPE))
image_dim = np.expand_dims(img_norm, axis=0)
batch_angle = self.generator(image_dim, rotation=60)
batch_angle = batch_angle.reshape(2, self.IMAGE_WIDTH,
self.IMAGE_HEIGHT, 3)
batches = np.round(batch_angle).astype(np.uint8)
image = preprocess_input(batches)
return image
def __getitem__(self, idx):
batch_paths = self.paths[idx * BATCH_SIZE:(idx + 1) * BATCH_SIZE]
x1 = self.x1[idx * BATCH_SIZE:(idx + 1) * BATCH_SIZE]
x2 = self.x2[idx * BATCH_SIZE:(idx + 1) * BATCH_SIZE]
y1 = self.y1[idx * BATCH_SIZE:(idx + 1) * BATCH_SIZE]
y2 = self.y2[idx * BATCH_SIZE:(idx + 1) * BATCH_SIZE]
batch_masks = np.zeros((len(batch_paths), GRID_SIZE, GRID_SIZE))
batch_images = np.zeros((len(batch_paths), IMAGE_SIZE, IMAGE_SIZE, 3),
dtype=np.float32)
for i, f in enumerate(batch_paths):
img = Image.open(f)
img = img.resize((IMAGE_SIZE, IMAGE_SIZE))
img = img.convert('RGB')
batch_masks[i, y1[i]:y2[i], x1[i]:x2[i]] = 1
batch_images[i] = preprocess_input(np.array(img, dtype=np.float32))
img.close()
return batch_images, batch_masks[:, :, :, np.newaxis]
def predict_model(image, model):
# Pick a test image, run model, show image, and show predicted bounding box overlaid on the image
feat_scaled = preprocess_input(np.array(image, dtype=np.float32))
pred = model.predict(x=np.array([feat_scaled]))[0] # Predict the BBox
predClass = int(np.argmax(pred))
print(pred)
print(predClass)
x0 = int(pred[0])
y0 = int(pred[1])
x1 = int((pred[0] + pred[2]))
y1 = int((pred[1] + pred[3]))
print("predition Bounding Box co-ordinates are :", x0, y0, x1, y1)
cv2.rectangle(image, (x0, y0), (x1, y1), (0, 0, 255), 1) # Show the BBox
img = Image.fromarray(image.astype('uint8'))
file_object = io.BytesIO()
img.save(file_object, 'PNG')
file_object.seek(0)
return file_object
def preprocess_image_crop(image_path, img_size):
'''
Preprocess the image scaling it so that its smaller size is img_size.
The larger size is then cropped in order to produce a square image.
'''
img = load_img(image_path)
scale = float(img_size) / min(img.size)
new_size = (int(np.ceil(scale * img.size[0])),
int(np.ceil(scale * img.size[1])))
# print('old size: %s,new size: %s' %(str(img.size), str(new_size)))
img = img.resize(new_size, resample=Image.BILINEAR)
img = img_to_array(img)
crop_h = img.shape[0] - img_size
crop_v = img.shape[1] - img_size
img = img[crop_h:img_size + crop_h, crop_v:img_size + crop_v, :]
img = np.expand_dims(img, axis=0)
img = vgg16.preprocess_input(img)
return img
def vgg16(im_dir):
base_model = VGG16(weights='imagenet')
model = Model(inputs=base_model.input,
outputs=(base_model.get_layer('block5_pool').output,
base_model.get_layer('block5_conv3').output,
base_model.layers[-1].output))
img = image.load_img(im_dir, target_size=(224, 224))
x = image.img_to_array(img)
x = np.expand_dims(x, axis=0)
x = preprocess_input(x)
# all_wg = base_model.layers[-1].get_weights()[0]
pool, relu, pred = model.predict(x)
pool_resized = tf.image.resize(pool, (14, 14))
features = tf.concat([relu, pool_resized], axis=0)
return features, pred
def crop_imgs_and_prepare(img, roilist, param):
""" Crop the image on the region of interest and preprocess the crops before the
CNN network. The function is used in get_proposals, during the refinement step.
Args:
img: image.
roilist: Regions of interest.
param: parameters of the model.
Returns: Ip: Preprocessed crops of the image
"""
Ip = []
if len(roilist.shape) == 1:
roilist = roilist.reshape(-1, 1)
for i in range(roilist.shape[1]):
roi = roilist[:, i]
img_cropped = img[int(roi[1]) : int(roi[3]) + 1, int(roi[0]) : int(roi[2]) + 1, :]
img_cropped = preprocess_input(img_cropped, mode = 'caffe')
Ip.append(cv2.resize(img_cropped, (param['height'], param['width']), interpolation = cv2.INTER_LINEAR))
return np.array(Ip)
def __getitem__(self, index):
'Generate one batch of data'
# selects indices of data for next batch (chooses an image using 'index' provided by shuffling the dataset at the end of each pass)
indexes = self.indexes[index * self.batch_size:(index + 1) *
self.batch_size]
images = [
cv2.cvtColor(
cv2.imread(os.path.join(TEST_PATH, self.images_paths[k])),
cv2.COLOR_BGR2RGB) for k in indexes
]
images = np.array(images)
images = images.astype(np.float32)
images = np.array([preprocess_input(img) for img in images])
labels = [self.labels[k] for k in indexes]
labels = to_categorical(labels, num_classes=NUM_CLASSES, dtype='int8')
return images, labels
def classify_image():
original = Image.open(image_data)
original = original.resize((224, 224), Image.ANTIALIAS)
numpy_image = img_to_array(original)
image_batch = np.expand_dims(numpy_image, axis=0)
processed_image = vgg16.preprocess_input(image_batch.copy())
predictions = vgg_model.predict(processed_image)
label = decode_predictions(predictions)
table = tk.Label(
frame, text="Top image class predictions and confidences\n").pack()
for i in range(0, len(label[0])):
result = tk.Label(frame,
text=str(label[0][i][1]).upper() + ': ' +
str(round(float(label[0][i][2]) * 100, 3)) +
'%').pack()
def load_data(dir_path, img_size=IMG_SIZE):
X = []
y = []
i = 0
for path in tqdm(sorted(os.listdir(dir_path))):
if not path.startswith('.'):
for file in os.listdir(dir_path + path):
if not file.startswith('.'):
img = cv2.imread(dir_path + path + '/' + file)
img = cv2.resize(img,
dsize=img_size,
interpolation=cv2.INTER_CUBIC)
X.append(preprocess_input(img))
y.append(i)
i += 1
X = np.array(X)
y = np.array(y)
print(f'{len(X)} images loaded from {dir_path} directory.')
return X, y
def generate_features_to_disk(folder_path):
#folder_path = '/home/josemiki/vision/cropssmt/crops/'
matrix_features_images = []
for infolder in sorted(glob.glob(os.path.join(folder_path, '*'))):
list_features_per_image = []
#list_name_image=[]
for infile in sorted(glob.glob(os.path.join(infolder, '*.png'))):
# list_name_image.append(infile)
img = image.load_img(infile, target_size=(224, 224))
img_data = image.img_to_array(img)
img_data = np.expand_dims(img_data, axis=0)
img_data = preprocess_input(img_data)
vgg16_feature = model.predict(img_data)
vgg16_feature_np = np.array(vgg16_feature)
list_features_per_image.append(vgg16_feature_np.flatten())
vgg16_feature_list_np = np.array(list_features_per_image)
with open(infolder + "/features.txt", "wb") as fp:
pickle.dump(list_features_per_image, fp)
def embed_image_vgg(img_path, model):
"""
Args:
- img_path: path to image
Return:
- (4096,) vector embedding of image
"""
img = image.load_img(img_path, target_size=(224, 224))
x = image.img_to_array(img)
x = np.expand_dims(x, axis=0)
x = preprocess_input(x)
features = model.predict(x)
fc2_features_extractor_model = Model(inputs=model.input, outputs=model.get_layer('fc2').output)
fc2_features = fc2_features_extractor_model.predict(x)
fc2_features = fc2_features.reshape((4096,))
return fc2_features
def imagenet_generator(dataset,
batch_size=32,
num_classes=1000,
is_training=False):
images = np.zeros((batch_size, 224, 224, 3))
labels = np.zeros((batch_size, num_classes))
while True:
count = 0
for sample in tfds.as_numpy(dataset):
image = sample["image"]
label = sample["label"]
images[count % batch_size] = preprocess_input(
np.expand_dims(cv.resize(image, (224, 224)), 0))
labels[count % batch_size] = np.expand_dims(
to_categorical(label, num_classes=num_classes), 0)
count += 1
if (count % batch_size == 0):
yield images, labels
def getNNEmbedding(imCollection, modelType='vgg16'):
from tensorflow.keras.preprocessing import image
from tensorflow.keras.applications.vgg16 import preprocess_input
print("Initiating model: "+modelType)
if modelType=='vgg16':
from tensorflow.keras.applications.vgg16 import VGG16
model = VGG16(weights='imagenet', include_top=False)
if modelType=='inceptionv3':
from tensorflow.keras.applications.inception_v3 import InceptionV3
model = InceptionV3(weights='imagenet', include_top=False)
if modelType=='efficientnet':
from tensorflow.keras.applications import EfficientNetB3
model = EfficientNetB3(weights='imagenet',include_top=False)
imlist = [im['arrays'] for im in imCollection]
predictions = []
for thisim in tqdm.tqdm(imlist):
x = np.expand_dims(transform.resize(thisim,(224,224)), axis=0)
x = preprocess_input(x)
predictions.append(model.predict(x).flatten())
return predictions
def predict():
if request.method == "POST":
data = request.files["file"]
data.save("img.jpg")
img = load_img('img.jpg',target_size=(128, 128))
x = img_to_array(img)
x = np.expand_dims(x, axis=0)
img_data = preprocess_input(x)
classes = model.predict(img_data)
A = np.squeeze(np.asarray(classes))
if(A==1):
return render_template('index.html',predicted_label="Xray contains Pneumonia")
else:
return render_template('index.html',predicted_label="Xray doesn't contains Pneumonia")
return render_template("index.html")
