def test_preprocessing_legacy(self, augname):
image = tf.zeros((300, 300, 3), dtype=tf.float32)
try:
preprocessing.preprocess_image(image, 224, False, None, augname)
except tf.errors.InvalidArgumentError as e:
if 'ExtractJpegShape' not in str(e):
raise e
def pre_processing(image, label, attr, H=h, W=w, is_training=True):
preprocessing.preprocess_image(image,
H,
W,
is_training=is_training,
resize_side_min=H,
resize_side_max=W)
return image, label, attr
def record_parser(value, is_training):
keys_to_features = {
'image/encoded': tf.FixedLenFeature((), tf.string, default_value=''),
'image/format': tf.FixedLenFeature((), tf.string,
default_value='jpeg'),
'image/class/label': tf.FixedLenFeature((), tf.int64,
default_value=-1),
'image/class/text': tf.FixedLenFeature((), tf.string,
default_value=''),
'image/object/bbox/xmin': tf.FixedLenFeature((), tf.float32),
'image/object/bbox/ymin': tf.FixedLenFeature((), tf.float32),
'image/object/bbox/xmax': tf.FixedLenFeature((), tf.float32),
'image/object/bbox/ymax': tf.FixedLenFeature((), tf.float32),
'image/object/class/label': tf.FixedLenFeature((), tf.int64)
}
parsed = tf.parse_single_example(value, keys_to_features)
image = tf.image.decode_image(
tf.reshape(parsed['image/encoded'], shape=[]), _NUM_CHANNELS)
image = tf.image.convert_image_dtype(image, dtype=tf.float32)
image = preprocessing.preprocess_image(image=image,
output_height=_DEFAULT_IMAGE_SIZE,
output_width=_DEFAULT_IMAGE_SIZE,
is_training=is_training)
label = tf.cast(tf.reshape(parsed['image/class/label'], shape=[]),
dtype=tf.int32)
return image, tf.one_hot(label, _LABEL_CLASSED)
def _classify_image(self):
fname = "{}.jpeg".format(uuid.uuid4().hex)
image = preprocess_image(self._input)
image.save(fname)
image.close()
self._pred = predict(fname, self._img_model, self._img_labels)
os.remove(fname)
def telemetry(sid, data):
if data:
# The current steering angle of the car
steering_angle = data["steering_angle"]
# The current throttle of the car
throttle = data["throttle"]
# The current speed of the car
speed = data["speed"]
# The current image from the center camera of the car
imgString = data["image"]
image = Image.open(BytesIO(base64.b64decode(imgString)))
image_array = np.asarray(image)
image_array = preprocess_image(image_array)
steering_angle = float(
model.predict(image_array[None, :, :, :], batch_size=1))
# throttle = controller.update(float(speed))
throttle = .12
print(steering_angle, throttle)
send_control(steering_angle, throttle)
# save frame
if args.image_folder != '':
timestamp = datetime.utcnow().strftime('%Y_%m_%d_%H_%M_%S_%f')[:-3]
image_filename = os.path.join(args.image_folder, timestamp)
image.save('{}.jpg'.format(image_filename))
else:
# NOTE: DON'T EDIT THIS.
sio.emit('manual', data={}, skip_sid=True)
def predict(self, image_path='./dataset/test/text.jpg', text=""):
try:
model = self.build()
model.load_weights('./model/MemSem')
input_id, token_type_id, attention_mask = self.encode(
[preprocess_txt(text)])
image_data = preprocess_image(
keras_image.load_img(image_path,
target_size=(224, 224),
interpolation='bicubic'))
image_data = np.expand_dims(image_data, axis=0)
value = model.predict(
[input_id, token_type_id, attention_mask, image_data])
prediction = np.argmax(value)
if prediction == 2: # negative = [0,0,1]
print("Its a bad meme")
elif prediction == 1: # postive = [0,1,0]
print("Its not bad XD")
elif prediction == 0: # neutral = [1,0,0]
print("Its meaningless")
except Exception as e:
print(e)
def _preprocess_image(image_bytes):
"""Preprocess a single raw image."""
image = preprocessing.preprocess_image(image_bytes=image_bytes,
is_training=False,
image_size=image_size,
resize_method=resize_method)
return image
def generate_samples():
X, y = [], []
with open('driving_log.csv') as csvfile:
# counter = 0
for center_image, _, _, steering_angle, _, _, speed in csv.reader(
csvfile):
# if counter >2000: break
# counter +=1
# if float(steering_angle)**2 > 0.02 or random.random() < .2:
X.append(preprocess_image(cv2.imread(center_image)))
y.append(float(steering_angle))
if float(steering_angle)**2 > .02:
X.append(preprocess_image(cv2.imread(center_image), True))
y.append(-float(steering_angle))
return np.asarray(X), np.asarray(y)
def _parse_function(filename):
image_string = tf.read_file(filename)
image_decoded = preprocessing.preprocess_image(image_string,
is_training,
image_size=image_size)
image = tf.cast(image_decoded, tf.float32)
return image
def show_img_mask(train_df, idx, PATH='../data/pku-autonomous-driving/'):
img0 = imread(PATH + 'train_images/' + train_df['ImageId'][idx] + '.jpg')
img = preprocess_image(img0)
mask, regr, mask_gaus = get_mask_and_regr(
img0, train_df['PredictionString'][idx])
print('img.shape', img.shape, 'std:', np.std(img))
print('mask.shape', mask.shape, 'std:', np.std(mask))
print('regr.shape', regr.shape, 'std:', np.std(regr))
plt.figure(figsize=(16, 16))
plt.title('Processed image')
plt.imshow(img)
plt.show()
plt.figure(figsize=(16, 16))
plt.title('Detection Mask')
plt.imshow(mask)
plt.show()
plt.figure(figsize=(16, 16))
plt.title('Detection Mask Gaussian')
plt.imshow(mask_gaus)
plt.show()
plt.figure(figsize=(16, 16))
plt.title('Yaw values')
plt.imshow(regr[:, :, -2])
plt.show()
def __getitem__(self, idx):
if torch.is_tensor(idx):
idx = idx.tolist()
# Get image name
idx, labels, _ = self.df.values[idx]
img_name = self.root_dir.format(idx)
# Augmentation
flip = False
if self.training:
flip = np.random.randint(10) == 1
# Read image
img0 = imread(img_name, True)
img = preprocess_image(img0,
img_w=self.img_w,
img_h=self.img_h,
flip=flip)
img = np.rollaxis(img, 2, 0)
# Get mask and regression maps
if self.training:
mask, regr, mask_gaus = get_mask_and_regr(img0,
labels,
img_w=self.img_w,
img_h=self.img_h,
flip=flip)
regr = np.rollaxis(regr, 2, 0)
dropmask = 0
else:
mask, regr, mask_gaus = 0, 0, 0
dropmask_name = self.root_dir_dropmasks.format(idx)
if os.path.isfile(dropmask_name):
dropmask = imread(dropmask_name, True)
dropmask = preprocess_image(dropmask, self.img_w, self.img_h)
else:
dropmask = np.zeros((self.img_h, self.img_w, 3))
img = torch.as_tensor(img, dtype=torch.float32)
mask = torch.as_tensor(mask, dtype=torch.float32)
mask_gaus = torch.as_tensor(mask_gaus, dtype=torch.float32)
regr = torch.as_tensor(regr, dtype=torch.float32)
dropmask = torch.as_tensor(dropmask, dtype=torch.float32)
return [img, mask, regr, mask_gaus, dropmask]
def image_preprocessing(self, image):
return preprocessing.preprocess_image(image,
image_size=self.image_size,
is_training=self.is_training,
image_dtype=self.image_dtype,
augname=self.augname,
ra_num_layers=self.ra_num_layers,
ra_magnitude=self.ra_magnitude)
def crop_preprocess_image(self, full_img, bbox):
bbox_array = bbox.split(" ")
links = int(bbox_array[0])
oben = int(bbox_array[1])
rechts = int(bbox_array[2])
unten = int(bbox_array[3])
crop_img = full_img[oben:unten, links:rechts]
data = preprocess_image(crop_img)
return data
def _preprocess_image(image, label):
image = preprocessing.preprocess_image(image,
output_size=self.output_size,
is_training=self.is_training,
resize_with_pad=self.resize_with_pad,
randaug_num_layers=self.randaug_num_layers,
randaug_magnitude=self.randaug_magnitude)
return image, label
def _parse_function(filename, label):
image_string = tf.read_file(filename)
image_decoded = preprocessing.preprocess_image(
image_bytes=image_string,
is_training=is_training,
use_bfloat16=False,
image_size=self.image_size)
image = tf.cast(image_decoded, tf.float32)
return image, label
def __init__(self, image_size=299, is_training=True, is_show=False):
self.sess = tf.Session()
with self.sess.as_default():
self.pl = tf.placeholder(dtype=tf.uint8)
self.result = preprocess_image(self.pl,
image_size,
image_size,
is_training=is_training)
# here result.dtype should be tf.float32
if is_show and self.result.dtype != tf.uint8:
self.result = tf.cast(self.result, dtype=tf.uint8)
async def image_to_text(data: Data) -> dict[str, str]:
"""Extract the text from an image, and preprocess it using the received points."""
np_image = decode_image(data.b64image)
if data.points:
points = [(pt.x, pt.y) for pt in data.points]
else:
points = None
preprocessed = preprocess_image(np_image, points)
text = text_from_image(preprocessed)
return {'result': text}
def _image_tta(image):
rescale = preprocessing.preprocess_image(
image,
output_size=self.output_size,
is_training=False,
resize_with_pad=self.resize_with_pad)
rescale_flip = tf.image.flip_left_right(rescale)
leftup = preprocessing.preprocess_image(
image,
output_size=self.output_size,
is_training=False,
resize_with_pad=self.resize_with_pad,
tta='leftup')
leftup_flip = tf.image.flip_left_right(leftup)
rightdown = preprocessing.preprocess_image(
image,
output_size=self.output_size,
is_training=False,
resize_with_pad=self.resize_with_pad,
tta='rightdown')
rightdown_flip = tf.image.flip_left_right(rightdown)
return (rescale, rescale_flip, leftup, leftup_flip, rightdown, \
rightdown_flip)
def preprocess(parsed):
"""Preprocess image for inference."""
features = {}
if FLAGS.data_type == 'tfrecord':
image = tf.image.decode_jpeg(parsed['image/encoded'], channels=3)
features['image'] = preprocessing.preprocess_image(
image,
is_training=False,
image_size=FLAGS.input_image_size,
use_bfloat16=FLAGS.use_bfloat16,
is_image_bytes=False,
)
return features
def _parse_single_example(example_proto):
features = tf.io.parse_single_example(example_proto,
self.feature_description)
image = tf.io.decode_jpeg(features['image/encoded'])
label = _parse_label(features)
instance_id = features['image/source_id']
latitude = features['image/latitude']
longitude = features['image/longitude']
date = features['image/date']
valid = features['image/valid']
if self.use_tta:
image = _image_tta(image)
else:
image = preprocessing.preprocess_image(
image,
output_size=self.output_size,
is_training=self.preprocess_for_train,
resize_with_pad=self.resize_with_pad,
randaug_num_layers=self.randaug_num_layers,
randaug_magnitude=self.randaug_magnitude)
coordinates = tf.stack([latitude, longitude], 0)
if self.is_training and FLAGS.use_coordinates_augment:
coordinates = _drop_coordinates(coordinates)
if self.provide_coord_date_encoded_input:
lat = _encode_feat(latitude, FLAGS.loc_encode)
lon = _encode_feat(longitude, FLAGS.loc_encode)
if FLAGS.use_date_feats:
date = date * 2.0 - 1.0
date = _encode_feat(date, FLAGS.date_encode)
coord_date_encoded = tf.concat([lon, lat, date], axis=0)
else:
coord_date_encoded = tf.concat([lon, lat], axis=0)
inputs = (image, coordinates, coord_date_encoded) \
if self.provide_coordinates_input \
else (image, coord_date_encoded)
else:
inputs = (image, coordinates) if self.provide_coordinates_input \
else image
if self.provide_validity_info_output:
outputs = (label, valid, instance_id) if self.provide_instance_id \
else (label, valid)
else:
outputs = (label,
instance_id) if self.provide_instance_id else label
return inputs, outputs
def read_and_decode(filename_queue):
reader = tf.TFRecordReader()
_, serialized_example = reader.read(filename_queue)
features = tf.parse_single_example(
serialized_example,
# Defaults are not specified since both keys are required.
features={
'image/encoded': tf.FixedLenFeature([], tf.string),
'image/class/label': tf.FixedLenFeature([], tf.int64),
})
image = preprocessing.preprocess_image(features['image/encoded'])
label = features['image/class/label']
return image, label
def canonize(img_file, depth_file, opts, params):
img = preprocess_image(img_file)
segmask = segmentation(depth_file, opts["segmentation"])
img, segmask = _canonize(img, segmask, opts)
# Determine if image is upside down.
diff = np.sum(np.abs(img - params["img_avg"]))
diff_upsidedown = np.sum(np.abs(img - params["img_avg_upsidedown"]))
upsidedown = diff > diff_upsidedown
if dataset.is_upside_down(img_file) != upsidedown:
print "Canonization failed!"
if upsidedown:
img = np.fliplr(np.flipud(img))
segmask = np.fliplr(np.flipud(segmask))
return img, segmask
def canonization_training(opts):
print "# Canonization training"
params = caching.nul_repr_dict()
# Generate average intensity image from a subset of the dataset.
img_avg = np.zeros(opts["img_shape"], dtype=int)
files = dataset.training_files(opts["num_train_images"])
for img_file, depth_file in print_progress(files):
img = preprocess_image(img_file)
segmask = segmentation(depth_file, opts["segmentation"])
img, segmask = _canonize(img, segmask, opts)
# Orient correctly if image is upside down
if dataset.is_upside_down(img_file):
img = np.fliplr(np.flipud(img))
img_avg += img
img_avg /= len(files)
params["img_avg"] = img_avg
params["img_avg_upsidedown"] = np.fliplr(np.flipud(img_avg))
return params
def pre_reconst(img, verbose=False, is_simple=False, threaded=True):
if verbose: print_msg("preprocessing..")
if is_simple:
layouts = [
Paragraph(img=simple_preproc(img),
rect=(0, 0, img.shape[0], img.shape[1]))
]
else:
layouts = preprocess_image(img)
if verbose: print_msg("detecting..")
graphs = detection.get_graphs(layouts, threaded=threaded)
if verbose: print_msg("recognizing..")
graphs = chrecog.predict.get_pred(graphs)
if verbose: print_msg("semantic..")
graphs = semantic.analyze(graphs)
return graphs
def decaptcha(filenames):
model = load_model('model.h5')
codes = []
numChars = np.zeros((len(filenames), ))
index = 0
for filename in filenames:
image = cv2.imread(filename)
letters = preprocessing.preprocess_image(image)
outputs = []
for letter in letters:
outputs.append(
one_hot_to_char(
model.predict(
letter.reshape(1, letter.shape[0], letter.shape[1],
1))))
codes.append(''.join(outputs))
numChars[index] = len(outputs)
index += 1
return (numChars, codes)
def main(args):
thetas = args.thetas
num_b_lines = args.num_b_lines
num_horizontal_lines = args.num_horizontal_lines
cap = cv2.VideoCapture('Cov-Atlas-Day+1.avi')
ret, frame = cap.read()
# # Our operations on the frame come here
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
gray = preprocess_image(gray)
regularized_image = fb_algorithm(gray, thetas=thetas)
fig = plt.figure()
ax1 = fig.add_subplot(1, 2, 1)
ax1.imshow(gray, cmap='gray')
a_line_points = get_horizontal_peaks(regularized_image,
num_peaks=num_horizontal_lines)
b_line_points = get_b_line_peaks(regularized_image, num_peaks=num_b_lines)
draw_lines(b_line_points, gray)
draw_lines(a_line_points, gray)
ax2 = fig.add_subplot(1, 2, 2)
ax2.imshow(regularized_image, cmap='gray')
plt.show()
def test_model(csv_file,
test_dir,
n_classes=5,
model="best_model.hdf5",
test_cache_file="x_test.npy",
cached_predictions="predictions.npy",
submission_file="submission.csv"):
data, N = read_csv(csv_file)
if not os.path.exists(test_cache_file):
x_test = np.empty((N, 224, 224, 3), dtype=np.uint8)
for i, image_id in tqdm(enumerate(data['id_code'])):
f_path = os.path.join(test_dir, image_id + ".png")
x_test[i, :, :, :] = preprocessing.preprocess_image(
f_path, grayscale=False, output_channels=3)
np.save(test_cache_file, x_test)
else:
x_test = np.load(test_cache_file)
if not os.path.exists(cached_predictions):
classifier = Classifier(labels=["0", "1", "2", "3", "4"])
classifier.load(model)
predictions = classifier.predict(x_test)
np.save(cached_predictions, predictions)
else:
predictions = np.load(cached_predictions)
y_test = predictions > 0.5
y_test = y_test.astype(int).sum(axis=1) - 1
submission_df = pd.read_csv(csv_file)
submission_df['diagnosis'] = y_test
submission_df.to_csv('submission.csv', index=False)
def parse_tf_example(example, is_training, image_size):
features = {
'image/label': tf.FixedLenFeature([], dtype=tf.int64),
'image/encoded': tf.FixedLenFeature([], dtype=tf.string)
}
parsed = tf.parse_single_example(serialized=example, features=features)
label = parsed['image/label']
encode_image = parsed['image/encoded']
# return image of [0,1),shape(?,?,3)
image = preprocessing.decode_image(encode_image)
# return image of [-1,1),need 4-D of input,but shape(?,?,3) is also ok from my test.
image = preprocessing.preprocess_image(
image,
is_training=is_training,
height=image_size[0],
width=image_size[1],
min_scale=0.8,
max_scale=1,
p_scale_up=0.5,
aug_color=True,
)
return image, label
def train_model(
csv_file,
train_dir,
n_classes=5,
train_cache_file="x_train.npy",
epochs=20,
densenet_weights='/media/hdd/data/densenet/DenseNet-BC-121-32-no-top.h5'
):
data, N = read_csv(csv_file)
if not os.path.exists(train_cache_file):
x_train = np.empty((N, 224, 224, 3), dtype=np.uint8)
for i, (image_id, diagnosis) in tqdm(enumerate(
zip(data['id_code'], data['diagnosis'])),
total=len(data['id_code'])):
f_path = os.path.join(train_dir, diagnosis, image_id + ".png")
x_train[i, :, :, :] = preprocessing.preprocess_image(
f_path, grayscale=False, output_channels=3)
np.save(train_cache_file, x_train)
else:
x_train = np.load(train_cache_file)
y_train = np.zeros((N, n_classes))
for i, diagnosis in enumerate(data["diagnosis"]):
y_train[i, :] = get_multilabel(diagnosis, n_classes)
train_data = {"x": x_train, "y": y_train}
classifier = Classifier(labels=["0", "1", "2", "3", "4"])
classifier.build(densenet_weights=densenet_weights)
classifier.train(train_data, epochs=epochs)
if __name__ == '__main__':
model_name = 'efficientnet-b0'
labels_map_file = 'eval_data/labels_map.txt'
image_file = 'eval_data/panda.jpg'
training = False
blocks_args, global_params = eb.get_model_params(model_name, None)
model = keras_efficientnet(blocks_args, global_params, training)
model.load_weights(
'models/efficientnet_b0_weights_tf_dim_ordering_tf_kernels.h5')
MEAN_RGB = [0.485 * 255, 0.456 * 255, 0.406 * 255]
STDDEV_RGB = [0.229 * 255, 0.224 * 255, 0.225 * 255]
image_string = tf.read_file(image_file)
image_decoded = preprocessing.preprocess_image(image_string, training, 224)
image = tf.cast(image_decoded, tf.float32)
image -= tf.constant(MEAN_RGB, shape=[1, 1, 3], dtype=image.dtype)
image /= tf.constant(STDDEV_RGB, shape=[1, 1, 3], dtype=image.dtype)
y = model.predict(tf.expand_dims(image, 0), steps=1)[0]
label_map = json.loads(open(labels_map_file).read())
pred_idx = np.argsort(y)[::-1]
print(np.argmax(y))
print('truth: 388')
print(pred_idx[:5])
print([y[pid] for pid in pred_idx[:5]])
for i in range(5):
print(' -> top_{} ({:4.2f}%): {} '.format(
i + 1, y[pred_idx[i]] * 100, label_map[str(pred_idx[i])]))
from PIL import Image
except ImportError:
import Image
data = {"image": [], "filepath": [], "text": [], "label": []}
for dirname, _, filenames in os.walk('./dataset/'):
for filename in filenames:
try:
if dirname == './dataset/positive':
data['label'].append(int(1))
if dirname == './dataset/neutral':
data['label'].append(int(2))
if dirname == './dataset/negative':
data['label'].append(int(0))
data['image'].append(
preprocess_image(
os.path.join(dirname, filename)))
data['filepath'].append(
os.path.join(dirname, filename))
data['text'].append(
preprocess_txt(
pytesseract.image_to_string(
Image.open(
os.path.join(dirname, filename)))))
except Exception as e:
print(e)
continue
print('\r images: {} texts: {} labels : {}'.format(len(data['image']), len(data['text']), len(data['label'])), end='')
def _preprocess_image(image_bytes):
"""Preprocess a single raw image."""
image = preprocessing.preprocess_image(image_bytes=image_bytes,
is_training=False)
return image