def process_segment(self, segment_id):
# TODO: add docstring
self._log.info(
'Generation of body-face images in segment {}'.format(segment_id))
# sanity check for input_dir, detection_dir
check_directory(self._input_dir, 'Input')
check_directory(self._detection_dir, 'Detection')
for faces in self._load_faces_from_segment(segment_id):
# get original image name
image_basename = faces[0].image_name
# deal with inner folders inside segments
image_path_in_unrolled = [self._input_dir, segment_id]
image_path_in_unrolled.extend(self.segment_input_extra)
image_path_in_unrolled.append(image_basename)
image_path_in = os.path.join(*image_path_in_unrolled)
image = self._load_input(image_path_in)
body_list, face_list = self._process_batch(image, faces)
# generate body and face output directories for a given segment
for im_type, images in (('body', body_list), ('face', face_list)):
segm_output_dir = os.path.join(self._output_dir, im_type,
segment_id)
create_directory(segm_output_dir, 'Segment')
self._store(images, segm_output_dir, image_basename)
def process_segment(self, segment_id):
# TODO: add docstring
self._log.info(
'Synchronizing groups for segment {}'.format(segment_id))
# check input directory
segm_input_dir = os.path.join(self._input_dir, segment_id)
check_directory(segm_input_dir, 'Input Segment')
# check groups directory
segm_groups_dir = os.path.join(self._groups_dir, segment_id)
check_directory(segm_groups_dir, 'Groups Segment')
# load groups and create mapping image_name -> group
groups_inverse_map = self._load_groups_inverse_map(segm_groups_dir)
for frame_path in self._segment_sequence(segm_input_dir):
image_name = os.path.basename(frame_path)
group_id = self._get_group(image_name, groups_inverse_map)
# create cluster directory if necessary (also create segment
# directory the first time)
cluster_output_dir = os.path.join(self._output_dir, segment_id,
group_id)
create_directory(cluster_output_dir, 'Cluster')
# copy frame from original directory to cluster directory
output_path = self._get_output_path(output_dir=cluster_output_dir,
image_name=image_name)
self._store(frame_path, output_path)
def init_callbacks(output_mode,
plot_stats=True,
save_model=False,
save_stats=False,
stop_early=False,
plot_step=1,
reduce_lr=False,
figsize=None):
callbacks = []
training_dir = os.path.join(egosocial.config.TMP_DIR, 'training')
create_directory(training_dir, 'Training')
if save_model:
checkpoint_path = os.path.join(
training_dir, 'weights.{epoch:02d}-{val_loss:.2f}.h5')
checkpointer = ModelCheckpoint(
filepath=checkpoint_path,
monitor='val_loss',
save_best_only=True,
period=5,
)
callbacks.append(checkpointer)
if save_stats:
metrics_path = os.path.join(training_dir, 'metrics.csv')
csv_logger = CSVLogger(metrics_path)
callbacks.append(csv_logger)
if reduce_lr:
lr_handler = ReduceLROnPlateau(monitor='val_loss',
factor=0.5,
patience=5,
min_lr=0.00001)
callbacks.append(lr_handler)
if plot_stats:
# more plots need more space
if not figsize:
if output_mode != 'both_splitted':
figsize = (25, 5)
else:
figsize = (25, 13)
# plot_metrics = PlotLearning(update_step=plot_step, figsize=figsize)
# callbacks.append(plot_metrics)
if stop_early:
stopper = EarlyStopping(monitor='val_loss',
min_delta=0,
patience=10,
mode='auto')
callbacks.append(stopper)
return callbacks
def process_segment(self, segment_id):
# TODO: add docstring
self._log.info(
'Synchronizing groups for segment {}'.format(segment_id))
# check input directory
segm_input_dir = os.path.join(self._input_dir, segment_id)
check_directory(segm_input_dir, 'Input Segment')
# create directory
segm_output_dir = os.path.join(self._output_dir, segment_id)
create_directory(segm_output_dir,
'Output Segment',
warn_if_exists=True)
face_clustering = self._get_face_clustering(segm_input_dir)
output_path = self._get_output_path(output_dir=segm_output_dir,
file_name=self._groups_file_name)
self._store(face_clustering, output_path)
def process_segment(self, segment_id):
# TODO: add docstring
self._log.info('Face detection for segment {}'.format(segment_id))
# sanity check for input_dir
check_directory(self._input_dir, 'Input')
# create directory
segm_output_dir = os.path.join(self._output_dir, segment_id)
create_directory(segm_output_dir,
'Output Segment',
warn_if_exists=True)
for image_path in self._get_images(segment_id):
detected_faces = self.process_image(image_path)
output_path = self._get_output_path(output_dir=segm_output_dir,
input_path=image_path,
ext='.json')
# save detection
self._store(detected_faces, output_path)
def process_segment(self, segment_id):
# TODO: add docstring
self._log.info('Create face pairs for segment {}'.format(segment_id))
# check input directory
segm_input_dir = os.path.join(self._input_dir, segment_id)
check_directory(segm_input_dir, 'Input Segment')
# create output directory
segm_output_dir = os.path.join(self._output_dir, segment_id)
create_directory(segm_output_dir,
'Output Segment',
warn_if_exists=True)
iface_pairs = self.get_face_pairs(segment_id)
# copy frame from original directory to cluster directory
output_path = self._get_output_path(output_dir=segm_output_dir,
file_name=self._pairs_file_name)
self._store(iface_pairs, output_path)
def process_segment(self, segment_id):
""" Group faces in social segments.
Args:
:param segment_id: segment id.
"""
self._log.info('Face clustering for segment {}'.format(segment_id))
# sanity check for input_dir
check_directory(self._input_dir, 'Input')
# create directory
segm_output_dir = os.path.join(self._output_dir, segment_id)
create_directory(segm_output_dir,
'Output Segment',
warn_if_exists=True)
# load detected faces and create face groups
ifaces = self._load_ifaces_from_segment(segment_id)
clusters = self._face_clustering(ifaces)
# save results
output_path = self._get_output_path(output_dir=segm_output_dir,
file_name=self._groups_file_name)
self._store(clusters, output_path)
def run(conf):
# # Loading precomputed features and labels
helper = SocialClassifierWithPreComputedFeatures(
conf.dataset_path,
conf.features_dir,
test_size=0.2,
k_fold_splits=3,
val_size=0.2, # relative to training size
seed=SHARED_SEED)
helper.load_data()
# # Prepare splits
train_val_splits = [(helper.get_split_idx('train', k_fold=k),
helper.get_split_idx('val', k_fold=k))
for k in range(helper.k_fold_splits)]
# # Parameters
n_components, Q = conf.pca_components, conf.Q
n_features = n_components * 9 + 6 + 2 + 1
max_timestep = helper.max_sequence_len()
helper._log.info(
'Number of pca components per attribute (for visual embeddings): {}'.
format(n_components))
helper._log.info('Q: {}'.format(Q))
helper._log.info('Length of the largest sequence: {}'.format(max_timestep))
helper._log.info('Total number of features: {}'.format(n_features))
#'both_splitted' # multi-loss domain-relation
#'domain' # domain only
#'relation' # relation only
output_mode = conf.output_mode
helper._log.info('Output mode: {}'.format(output_mode))
model_strategy = conf.model_strategy
helper._log.info('Model strategy: {}'.format(model_strategy))
# # Grid search CV
reduce_dim = Preprocessing(features_range=helper.features_range,
create_transformation_cbk=TransformationFactory(
n_components=n_components,
Q=Q,
seed=SHARED_SEED))
generator_builder = TimeSeriesDataGeneratorBuilder(
maxlen=max_timestep,
output_cbk=LabelExpander(mode=output_mode),
seed=SHARED_SEED,
)
if output_mode == 'domain':
single_output = 'domain'
else:
single_output = 'relation'
metric_suffix = 'fmeasure'
# used only if GridSearchCV scoring attribute is set to None
if output_mode in ('domain', 'relation'):
metric_score = metric_suffix
else:
metric_score = single_output + '_' + metric_suffix
clf = KerasGeneratorClassifier(
build_fn=build_model,
build_generator=generator_builder,
output_mode=output_mode,
metric_score=metric_score,
single_output=single_output,
balanced=True, # compute class_weights internally
max_seq_len=max_timestep,
feature_vector_size=n_features,
recurrent_type='LSTM',
hidden_fc=1,
mode=output_mode,
model_strategy=model_strategy,
metrics=[fmeasure],
verbose=1,
workers=2,
)
pipeline = Pipeline([('reduce_dim', reduce_dim), ('clf', clf)])
scoring = [
'accuracy', 'recall_weighted', 'precision_weighted', 'f1_weighted',
'recall_macro', 'precision_macro', 'f1_macro'
]
# multi-output modes
if output_mode == 'both_splitted':
dom_scoring = [
dom_accuracy, dom_recall_weighted, dom_precision_weighted,
dom_f1_weighted, dom_recall_macro, dom_precision_macro,
dom_f1_macro
]
scoring.extend(dom_scoring)
common_search_params = dict(
estimator=pipeline,
cv=train_val_splits,
scoring=scoring,
refit=False,
return_train_score=True,
iid=False,
verbose=4,
n_jobs=1,
)
param_grid = dict(
clf__drop_rate=conf.drop_rate,
clf__learning_rate=conf.lr,
clf__epochs=conf.epochs,
clf__units=conf.units,
clf__l2_reg=conf.l2_reg,
clf__batch_size=conf.batch_size,
clf__decay=conf.lr_decay,
)
do_search = 'grid'
search_cv = GridSearchCV(
param_grid=param_grid,
**common_search_params,
)
callbacks = []
if conf.schedule_lr:
learning_rate = conf.lr[0]
lr_scheduler = LearningRateScheduler(
StepDecay(initial_lr=learning_rate, drop_rate=0.5, epochs_drop=10))
callbacks.append(lr_scheduler)
X = helper.features
if output_mode == 'domain':
# domain specific-labels
y = relation_to_domain_vec(helper._labels)
else:
y = helper._labels
fit_params = dict(
clf__verbose=1,
clf__callbacks=callbacks,
)
search_result = search_cv.fit(X, y, **fit_params)
training_dir = os.path.join(egosocial.config.TMP_DIR, 'training')
create_directory(training_dir, 'Training')
date_str = datetime.datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S')
file_name = '{}_{}_results_{}_{}.pkl'.format(date_str, do_search,
output_mode, model_strategy)
results_path = os.path.join(training_dir, file_name)
with open(results_path, 'wb') as file:
pickle.dump(search_result.cv_results_,
file,
protocol=pickle.HIGHEST_PROTOCOL)
