def align_face(self, face, image_size=182, margin=44):
minsize = 50 # minimum size of face
threshold = [0.7, 0.6, 0.6] # three steps's threshold
factor = 0.709 # scale factor
try:
img = face
except (IOError, ValueError, IndexError) as e:
errorMessage = 'Unable to align image'
print(errorMessage)
else:
if img.ndim < 2:
print('Unable to align image')
if img.ndim == 2:
img = facenet.to_rgb(img)
img = img[:, :, 0:3]
bounding_boxes, _ = detect_face.detect_face(
img, minsize, self.model_align_pnet, self.model_align_rnet,
self.model_align_onet, threshold, factor)
nrof_faces = bounding_boxes.shape[0]
if nrof_faces > 0:
det = bounding_boxes[:, 0:4]
img_size = np.asarray(img.shape)[0:2]
if nrof_faces > 1:
bounding_box_size = (det[:, 2] - det[:, 0]) * (det[:, 3] -
det[:, 1])
img_center = img_size / 2
offsets = np.vstack([
(det[:, 0] + det[:, 2]) / 2 - img_center[1],
(det[:, 1] + det[:, 3]) / 2 - img_center[0]
])
offset_dist_squared = np.sum(np.power(offsets, 2.0), 0)
index = np.argmax(
bounding_box_size - offset_dist_squared *
2.0) # some extra weight on the centering
det = det[index, :]
det = np.squeeze(det)
bb = np.zeros(4, dtype=np.int32)
bb[0] = np.maximum(det[0] - margin / 2, 0)
bb[1] = np.maximum(det[1] - margin / 2, 0)
bb[2] = np.minimum(det[2] + margin / 2, img_size[1])
bb[3] = np.minimum(det[3] + margin / 2, img_size[0])
cropped = img[bb[1]:bb[3], bb[0]:bb[2], :]
scaled = misc.imresize(cropped, (image_size, image_size),
interp='bilinear')
return scaled, bb
else:
print('Unable to align image')
return None, None
def main(args):
sleep(random.random())
output_dir = os.path.expanduser(args.output_dir)
if not os.path.exists(output_dir):
os.makedirs(output_dir)
# Store some git revision info in a text file in the log directory
src_path, _ = os.path.split(os.path.realpath(__file__))
facenet.store_revision_info(src_path, output_dir, ' '.join(sys.argv))
dataset = facenet.get_dataset(args.input_dir)
print('Creating networks and loading parameters')
with tf.Graph().as_default():
gpu_options = tf.GPUOptions(
per_process_gpu_memory_fraction=args.gpu_memory_fraction)
sess = tf.Session(config=tf.ConfigProto(gpu_options=gpu_options,
log_device_placement=False))
with sess.as_default():
pnet, rnet, onet = align.detect_face.create_mtcnn(sess, None)
minsize = 20 # minimum size of face
threshold = [0.6, 0.7, 0.7] # three steps's threshold
factor = 0.709 # scale factor
# Add a random key to the filename to allow alignment using multiple processes
random_key = np.random.randint(0, high=99999)
bounding_boxes_filename = os.path.join(
output_dir, 'bounding_boxes_%05d.txt' % random_key)
with open(bounding_boxes_filename, "w") as text_file:
nrof_images_total = 0
nrof_successfully_aligned = 0
if args.random_order:
random.shuffle(dataset)
for cls in dataset:
output_class_dir = os.path.join(output_dir, cls.name)
if not os.path.exists(output_class_dir):
os.makedirs(output_class_dir)
if args.random_order:
random.shuffle(cls.image_paths)
for image_path in cls.image_paths:
nrof_images_total += 1
filename = os.path.splitext(os.path.split(image_path)[1])[0]
output_filename = os.path.join(output_class_dir,
filename + '.png')
print(image_path)
if not os.path.exists(output_filename):
try:
img = misc.imread(image_path)
except (IOError, ValueError, IndexError) as e:
errorMessage = '{}: {}'.format(image_path, e)
print(errorMessage)
else:
if img.ndim < 2:
print('Unable to align "%s"' % image_path)
text_file.write('%s\n' % (output_filename))
continue
if img.ndim == 2:
img = facenet.to_rgb(img)
img = img[:, :, 0:3]
bounding_boxes, _ = align.detect_face.detect_face(
img, minsize, pnet, rnet, onet, threshold, factor)
nrof_faces = bounding_boxes.shape[0]
if nrof_faces > 0:
det = bounding_boxes[:, 0:4]
det_arr = []
img_size = np.asarray(img.shape)[0:2]
if nrof_faces > 1:
if args.detect_multiple_faces:
for i in range(nrof_faces):
det_arr.append(np.squeeze(det[i]))
else:
bounding_box_size = (
det[:, 2] - det[:, 0]) * (det[:, 3] -
det[:, 1])
img_center = img_size / 2
offsets = np.vstack([
(det[:, 0] + det[:, 2]) / 2 -
img_center[1],
(det[:, 1] + det[:, 3]) / 2 -
img_center[0]
])
offset_dist_squared = np.sum(
np.power(offsets, 2.0), 0)
index = np.argmax(
bounding_box_size -
offset_dist_squared * 2.0
) # some extra weight on the centering
det_arr.append(det[index, :])
else:
det_arr.append(np.squeeze(det))
for i, det in enumerate(det_arr):
det = np.squeeze(det)
bb = np.zeros(4, dtype=np.int32)
bb[0] = np.maximum(det[0] - args.margin / 2, 0)
bb[1] = np.maximum(det[1] - args.margin / 2, 0)
bb[2] = np.minimum(det[2] + args.margin / 2,
img_size[1])
bb[3] = np.minimum(det[3] + args.margin / 2,
img_size[0])
cropped = img[bb[1]:bb[3], bb[0]:bb[2], :]
scaled = misc.imresize(
cropped,
(args.image_size, args.image_size),
interp='bilinear')
nrof_successfully_aligned += 1
filename_base, file_extension = os.path.splitext(
output_filename)
if args.detect_multiple_faces:
output_filename_n = "{}_{}{}".format(
filename_base, i, file_extension)
else:
output_filename_n = "{}{}".format(
filename_base, file_extension)
misc.imsave(output_filename_n, scaled)
text_file.write('%s %d %d %d %d\n' %
(output_filename_n, bb[0],
bb[1], bb[2], bb[3]))
else:
print('Unable to align "%s"' % image_path)
text_file.write('%s\n' % (output_filename))
print('Total number of images: %d' % nrof_images_total)
print('Number of successfully aligned images: %d' %
nrof_successfully_aligned)
phase_train_placeholder = tf.get_default_graph().get_tensor_by_name(
"phase_train:0")
embedding_size = embeddings.get_shape()[1]
classifier_filename_exp = os.path.expanduser(classifier_filename)
with open(classifier_filename_exp, 'rb') as infile:
(model, class_names) = pickle.load(infile)
while True:
last_ret, frame = camera.read()
frame = cv2.resize(frame, (0, 0), fx=scale, fy=scale)
if img_size is None:
img_size = np.asarray(frame.shape)[0:2]
if frame.ndim == 2:
frame = facenet.to_rgb(frame)
frame = frame[:, :, 0:3]
bounding_boxes = detect_face_cnn.detect_face(frame)
if len(bounding_boxes) > 0:
for i in range(len(bounding_boxes)):
cropped = None
scaled = None
scaled_reshape = None
bb = [0, 0, 0, 0]
emb_array = np.zeros((1, embedding_size))
bb[0] = int(np.maximum(bounding_boxes[i][0], 0))
bb[1] = int(np.maximum(bounding_boxes[i][1], 0))
bb[2] = int(np.minimum(bounding_boxes[i][2], img_size[1]))
def main(args):
align = align_dlib.AlignDlib(os.path.expanduser(args.dlib_face_predictor))
landmarkIndices = align_dlib.AlignDlib.OUTER_EYES_AND_NOSE
output_dir = os.path.expanduser(args.output_dir)
if not os.path.exists(output_dir):
os.makedirs(output_dir)
# Store some git revision info in a text file in the log directory
src_path,_ = os.path.split(os.path.realpath(__file__))
facenet.store_revision_info(src_path, output_dir, ' '.join(sys.argv))
dataset = facenet.get_dataset(args.input_dir)
random.shuffle(dataset)
# Scale the image such that the face fills the frame when cropped to crop_size
scale = float(args.face_size) / args.image_size
nrof_images_total = 0
nrof_prealigned_images = 0
nrof_successfully_aligned = 0
for cls in dataset:
output_class_dir = os.path.join(output_dir, cls.name)
if not os.path.exists(output_class_dir):
os.makedirs(output_class_dir)
random.shuffle(cls.image_paths)
for image_path in cls.image_paths:
nrof_images_total += 1
filename = os.path.splitext(os.path.split(image_path)[1])[0]
output_filename = os.path.join(output_class_dir, filename+'.png')
if not os.path.exists(output_filename):
try:
img = misc.imread(image_path)
except (IOError, ValueError, IndexError) as e:
errorMessage = '{}: {}'.format(image_path, e)
print(errorMessage)
else:
if img.ndim == 2:
img = facenet.to_rgb(img)
if args.use_center_crop:
scaled = misc.imresize(img, args.prealigned_scale, interp='bilinear')
sz1 = scaled.shape[1]/2
sz2 = args.image_size/2
aligned = scaled[int(sz1-sz2):int(sz1+sz2),int(sz1-sz2):int(sz1+sz2),:]
else:
aligned = align.align(args.image_size, img, landmarkIndices=landmarkIndices,
skipMulti=False, scale=scale)
if aligned is not None:
print(image_path)
nrof_successfully_aligned += 1
misc.imsave(output_filename, aligned)
elif args.prealigned_dir:
# Face detection failed. Use center crop from pre-aligned dataset
class_name = os.path.split(output_class_dir)[1]
image_path_without_ext = os.path.join(os.path.expanduser(args.prealigned_dir),
class_name, filename)
# Find the extension of the image
exts = ('jpg', 'png')
for ext in exts:
temp_path = image_path_without_ext + '.' + ext
image_path = ''
if os.path.exists(temp_path):
image_path = temp_path
break
try:
img = misc.imread(image_path)
except (IOError, ValueError, IndexError) as e:
errorMessage = '{}: {}'.format(image_path, e)
print(errorMessage)
else:
scaled = misc.imresize(img, args.prealigned_scale, interp='bilinear')
sz1 = scaled.shape[1]/2
sz2 = args.image_size/2
cropped = scaled[(sz1-sz2):(sz1+sz2),(sz1-sz2):(sz1+sz2),:]
print(image_path)
nrof_prealigned_images += 1
misc.imsave(output_filename, cropped)
else:
print('Unable to align "%s"' % image_path)
print('Total number of images: %d' % nrof_images_total)
print('Number of successfully aligned images: %d' % nrof_successfully_aligned)
print('Number of pre-aligned images: %d' % nrof_prealigned_images)