def main():
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
coord = tf.train.Coordinator()
with tf.name_scope("create_inputs"):
reader = ImageReader(
DATA_DIR,
DATA_LIST_PATH,
input_size,
args.random_scale,
args.random_mirror,
args.ignore_label,
IMG_MEAN,
coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
#with g.as_default():
net = ICNet_BN({'data': image_batch}, is_training=True, num_classes=args.num_classes, filter_scale=args.filter_scale)
sub4_out = net.layers['sub4_out']
sub24_out = net.layers['sub24_out']
sub124_out = net.layers['conv6_cls']
restore_var = tf.global_variables()
all_trainable = [v for v in tf.trainable_variables() if ('beta' not in v.name and 'gamma' not in v.name) or args.train_beta_gamma]
loss_sub4 = create_loss(sub4_out, label_batch, args.num_classes, args.ignore_label)
loss_sub24 = create_loss(sub24_out, label_batch, args.num_classes, args.ignore_label)
loss_sub124 = create_loss(sub124_out, label_batch, args.num_classes, args.ignore_label)
l2_losses = [args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables() if 'weights' in v.name]
reduced_loss = LAMBDA1 * loss_sub4 + LAMBDA2 * loss_sub24 + LAMBDA3 * loss_sub124 + tf.add_n(l2_losses)
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(base_lr, tf.pow((1 - step_ph / args.num_steps), args.power))
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
if args.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
grads = tf.gradients(reduced_loss, all_trainable)
train_op = opt_conv.apply_gradients(zip(grads, all_trainable))
def run():
recreate_directory_structure()
# Create queue coordinator.
coord = tf.train.Coordinator()
# Load reader.
with tf.name_scope("create_inputs"):
reader = ImageReader("./train.npy", True, coord)
image_batch, label_list_batch = reader.dequeue(FLAGS.batch_size)
global_step = tf.Variable(0,
dtype=tf.int32,
name='global_step',
trainable=False)
net = CatznDogs({'data': image_batch}, global_step)
net.train(image_batch, label_list_batch, coord)
def test_image_queue(h=321, w=321):
input_size = (h, w)
# Create queue coordinator
coord = tf.train.Coordinator()
# Load Image Reader
with tf.name_scope('create_inputs'):
reader = ImageReader(INDEX_FILE, DATA_DIRECTORY, MASK_DIRECTORY,
input_size, True, True, IGNORE_LABEL, IMG_MEAN,
coord)
image_batch, mask_batch = reader.dequeue(BATCH_SIZE)
with tf.Session() as sess:
sess.run(tf.global_variables_initializer())
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
for _ in range(10):
images, masks = sess.run([image_batch, mask_batch])
# img = sess.run(mask_batch)
print np.unique(masks)
def main():
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
#tf.set_random_seed(args.random_seed)
coord = tf.train.Coordinator()
with tf.Graph().as_default(), tf.device('/cpu:0'):
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.train.exponential_decay(base_lr,
step_ph,
20000,
0.5,
staircase=True)
tf.summary.scalar('lr', learning_rate)
opt = tf.train.MomentumOptimizer(learning_rate, 0.9)
#opt = tf.train.RMSPropOptimizer(learning_rate, 0.9, momentum=0.9, epsilon=1e-10)
#opt = tf.train.AdamOptimizer(learning_rate)
losses = []
train_op = []
total_batch_size = args.batch_size*args.gpu_nums
with tf.name_scope('DeepLabResNetModel') as scope:
with tf.name_scope("create_inputs"):
reader = ImageReader(
args.data_dir,
args.data_list,
input_size,
args.random_blur,
args.random_scale,
args.random_mirror,
args.random_rotate,
args.ignore_label,
IMG_MEAN,
coord)
image_batch, label_batch = reader.dequeue(total_batch_size)
images_splits = tf.split(axis=0, num_or_size_splits=args.gpu_nums, value=image_batch)
labels_splits = tf.split(axis=0, num_or_size_splits=args.gpu_nums, value=label_batch)
net = DeepLabResNetModel({'data': images_splits}, is_training=True, num_classes=args.num_classes)
raw_output_list = net.layers['fc_voc12']
num_valide_pixel = 0
for i in range(len(raw_output_list)):
with tf.device('/gpu:%d' % i):
raw_output_up = tf.image.resize_bilinear(raw_output_list[i], size=input_size, align_corners=True)
tf.summary.image('images_{}'.format(i), images_splits[i]+IMG_MEAN, max_outputs = 4)
tf.summary.image('labels_{}'.format(i), labels_splits[i], max_outputs = 4)
tf.summary.image('predict_{}'.format(i), tf.cast(tf.expand_dims(tf.argmax(raw_output_up, -1),3),tf.float32), max_outputs = 4)
all_trainable = [v for v in tf.trainable_variables()]
# Predictions: ignoring all predictions with labels greater or equal than n_classes
raw_prediction = tf.reshape(raw_output_up, [-1, args.num_classes])
label_proc = prepare_label(labels_splits[i], tf.stack(raw_output_up.get_shape()[1:3]), num_classes=args.num_classes, one_hot=False) # [batch_size, h, w]
raw_gt = tf.reshape(label_proc, [-1,])
#indices = tf.squeeze(tf.where(tf.less_equal(raw_gt, args.num_classes - 1)), 1)
indices = tf.where(tf.logical_and(tf.less(raw_gt, args.num_classes), tf.greater_equal(raw_gt, 0)))
gt = tf.cast(tf.gather(raw_gt, indices), tf.int32)
prediction = tf.gather(raw_prediction, indices)
mIoU, update_op = tf.contrib.metrics.streaming_mean_iou(tf.argmax(tf.nn.softmax(prediction), axis=-1), gt, num_classes=args.num_classes)
tf.summary.scalar('mean IoU_{}'.format(i), mIoU)
train_op.append(update_op)
# Pixel-wise softmax loss.
loss = tf.nn.sparse_softmax_cross_entropy_with_logits(logits=prediction, labels=gt)
num_valide_pixel += tf.shape(gt)[0]
losses.append(tf.reduce_sum(loss))
l2_losses = [args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables() if 'weights' in v.name]
reduced_loss = tf.truediv(tf.reduce_sum(losses), tf.cast(num_valide_pixel, tf.float32)) + tf.add_n(l2_losses)
tf.summary.scalar('average_loss', reduced_loss)
grads = tf.gradients(reduced_loss, all_trainable, colocate_gradients_with_ops=True)
variable_averages = tf.train.ExponentialMovingAverage(0.99, step_ph)
variables_to_average = (tf.trainable_variables() + tf.moving_average_variables())
variables_averages_op = variable_averages.apply(variables_to_average)
train_op = tf.group(opt.apply_gradients(zip(grads, all_trainable)), *train_op)
train_op = tf.group(train_op, variables_averages_op)
summary_op = tf.summary.merge_all()
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.allow_soft_placement=True
sess = tf.Session(config=config)
init = [tf.global_variables_initializer(),tf.local_variables_initializer()]
sess.run(init)
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=2)
#restore from resnet imagenet, bised and local_step is in moving_average
#restore_var = [v for v in tf.trainable_variables() if 'fc' not in v.name]+[v for v in tf.global_variables() if ('moving_mean' in v.name or 'moving_variance' in v.name) and ('biased' not in v.name and 'local_step' not in v.name)]
restore_var = [v for v in tf.trainable_variables() if 'fc' not in v.name]
ckpt = tf.train.get_checkpoint_state(args.restore_from)
if ckpt and ckpt.model_checkpoint_path:
loader = tf.train.Saver(var_list=restore_var)
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('No checkpoint file found.')
"""
#restore from snapshot
restore_var = tf.global_variables()
ckpt = tf.train.get_checkpoint_state(args.snapshot_dir)
if ckpt and ckpt.model_checkpoint_path:
loader = tf.train.Saver(var_list=restore_var, allow_empty=True)
load_step = int(os.path.basename(ckpt.model_checkpoint_path).split('-')[1])
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('No checkpoint file found.')
load_step = 0
"""
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
summary_writer = tf.summary.FileWriter(args.snapshot_dir, graph=sess.graph)
# Iterate over training steps.
for step in range(args.num_steps):
start_time = time.time()
feed_dict = {step_ph: step}
if step % args.save_pred_every == 0 and step != 0:
loss_value, _ = sess.run([reduced_loss, train_op], feed_dict=feed_dict)
save(saver, sess, args.snapshot_dir, step)
elif step%100 == 0:
summary_str, loss_value, _, IOU = sess.run([summary_op, reduced_loss, train_op, mIoU], feed_dict=feed_dict)
duration = time.time() - start_time
summary_writer.add_summary(summary_str, step)
print('step {:d} \t loss = {:.3f}, mean_IoU = {:.3f}, ({:.3f} sec/step)'.format(step, loss_value, IOU, duration))
else:
loss_value, _ = sess.run([reduced_loss, train_op], feed_dict=feed_dict)
coord.request_stop()
coord.join(threads)
def main():
"""Create the model and start the training."""
args = get_arguments()
print("SAVE TO " + args.snapshot_dir)
datalists_epoch = {
1: args.datalist_path_epoch1,
2: args.datalist_path_epoch2,
3: args.datalist_path_epoch3,
4: args.datalist_path_epoch4,
5: args.datalist_path_epoch5
}
if args.cross_val:
val_epoch = int(args.cross_val)
train_epochs = [1, 2, 3, 4, 5]
train_epochs.remove(val_epoch)
train_lists = [datalists_epoch[i] for i in train_epochs]
val_lists = datalists_epoch[val_epoch]
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
max_runtime = args.max_runtime
max_time_seconds = 3600 * max_runtime
epochs_until_val = 3
global dataset_class_weights
if args.weights_for_dataset is None:
dataset_class_weights = None
elif args.weights_for_dataset == 'de_top15':
dataset_class_weights = weights_detop15
elif args.weights_for_dataset == 'eu_top25':
dataset_class_weights = weights_eutop25
elif args.weights_for_dataset == 'world2k':
dataset_class_weights = weights_world2k
elif args.weights_for_dataset == 'kaggle_dstl':
dataset_class_weights = weights_kaggledstl
elif args.weights_for_dataset == 'vaihingen':
dataset_class_weights = weights_vaihingen
elif args.weights_for_dataset == 'de_top15_nores':
dataset_class_weights = weights_detop15_nores
elif args.weights_for_dataset == 'eu_top25_nores':
dataset_class_weights = weights_eutop25_nores
elif args.weights_for_dataset == 'world2k_nores':
dataset_class_weights = weights_world2k_nores
coord = tf.train.Coordinator()
if args.cross_val:
with tf.name_scope("create_inputs"):
reader = ImageReader(args.datadir, train_lists, input_size,
args.random_scale, args.random_mirror,
args.ignore_label, IMG_MEAN, coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
# for validation
reader_val = ImageReader(args.datadir, val_lists, input_size,
args.random_scale, args.random_mirror,
args.ignore_label, IMG_MEAN, coord)
image_batch_val, label_batch_val = reader_val.dequeue(
args.batch_size)
else:
with tf.name_scope("create_inputs"):
reader = ImageReader(args.datadir, args.datalist_path, input_size,
args.random_scale, args.random_mirror,
args.ignore_label, IMG_MEAN, coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
# for validation
reader_val = ImageReader(args.datadir, args.datalist_path_val,
input_size, args.random_scale,
args.random_mirror, args.ignore_label,
IMG_MEAN, coord)
image_batch_val, label_batch_val = reader_val.dequeue(
args.batch_size)
net = ICNet_BN({'data': image_batch},
is_training=True,
num_classes=args.num_classes,
filter_scale=args.filter_scale)
with tf.variable_scope("val"):
net_val = ICNet_BN({'data': image_batch_val},
is_training=True,
num_classes=args.num_classes,
filter_scale=args.filter_scale)
sub4_out = net.layers['sub4_out']
sub24_out = net.layers['sub24_out']
sub124_out = net.layers['conv6_cls']
# early stop variables
last_val_loss_tf = tf.Variable(10000.0, name="last_loss")
steps_total_tf = tf.Variable(0, name="steps_total")
val_increased_t_tf = tf.Variable(0, name="loss_increased_t")
if args.not_restore_last:
restore_var = [
v for v in tf.global_variables() if 'conv6_cls' not in v.name
and 'val' not in v.name and 'sub4_out' not in v.name
and 'sub24_out' not in v.name and 'sub124_out' not in v.name
]
else:
# to load last layer, the line 78 in network.py has to be removed too and ignore_missing set to False
# see https://github.com/hellochick/ICNet-tensorflow/issues/50 BCJuan
# don't restore val vars
restore_var = [
v for v in tf.trainable_variables() if 'val' not in v.name
] #tf.global_variables()
# don't train val variables
all_trainable = [
v for v in tf.trainable_variables()
if (('beta' not in v.name and 'gamma' not in v.name)
or args.train_beta_gamma) and 'val' not in v.name
]
# all_trainable = [v for v in tf.trainable_variables() if
# ('beta' not in v.name and 'gamma' not in v.name) or args.train_beta_gamma]
# print([v for v in tf.global_variables() if v.name in["last_val_loss","steps_total","val_increased_t"]])
# restore_var.extend([v for v in tf.global_variables() if v.name in["last_val_loss","steps_total","val_increased_t"]])
# assert not np.any(np.isnan(sub4_out))
loss_sub4 = create_loss(sub4_out, label_batch, args.num_classes,
args.ignore_label)
loss_sub24 = create_loss(sub24_out, label_batch, args.num_classes,
args.ignore_label)
loss_sub124 = create_loss(sub124_out, label_batch, args.num_classes,
args.ignore_label)
# l2_losses = [args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables() if 'weights' in v.name]
l2_losses = [
args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables()
if ('weights' in v.name and 'val' not in v.name)
]
reduced_loss = LAMBDA1 * loss_sub4 + LAMBDA2 * loss_sub24 + LAMBDA3 * loss_sub124 + tf.add_n(
l2_losses)
####################### Loss Calculation FOR VALIDATION
sub4_out_val = net_val.layers['sub4_out']
sub24_out_val = net_val.layers['sub24_out']
sub124_out_val = net_val.layers['conv6_cls']
loss_sub4_val = create_loss(sub4_out_val, label_batch_val,
args.num_classes, args.ignore_label)
loss_sub24_val = create_loss(sub24_out_val, label_batch_val,
args.num_classes, args.ignore_label)
loss_sub124_val = create_loss(sub124_out_val, label_batch_val,
args.num_classes, args.ignore_label)
l2_losses_val = [
args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables()
if ('weights' in v.name and 'val' in v.name)
]
reduced_loss_val = LAMBDA1 * loss_sub4_val + LAMBDA2 * loss_sub24_val + LAMBDA3 * loss_sub124_val + tf.add_n(
l2_losses_val)
####################### End Loss Calculation FOR VALIDATION
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(
base_lr, tf.pow((1 - step_ph / args.num_steps), args.power))
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
if args.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
grads = tf.gradients(reduced_loss, all_trainable)
train_op = opt_conv.apply_gradients(zip(grads, all_trainable))
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
# start time
glob_start_time = time.time()
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=10)
if '.npy' not in args.restore_from:
ckpt = tf.train.get_checkpoint_state(args.restore_from)
else:
ckpt = tf.train.get_checkpoint_state(args.snapshot_dir)
if ckpt and ckpt.model_checkpoint_path:
vars_to_restore = get_tensors_in_checkpoint_file(
file_name=ckpt.model_checkpoint_path)
# print(vars_to_restore)
# print([v.name for v in restore_var])
# thanks to https://stackoverflow.com/a/50216949/8862202
# v.name[:-2] to transform 'conv1_1_3x3_s2/weights:0' to 'conv1_1_3x3_s2/weights'
vars_to_restore = [
v for v in restore_var
if 'val' not in v.name and v.name[:-2] in vars_to_restore
]
# print(vars_to_restore)
#loader = tf.train.Saver(var_list=restore_var)
loader = tf.train.Saver(var_list=vars_to_restore)
load_step = int(
os.path.basename(ckpt.model_checkpoint_path).split('-')[1])
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('Restore from pre-trained model...')
net.load(args.restore_from, sess)
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
if args.reset_patience:
z = tf.assign(val_increased_t_tf, 0)
sess.run(z)
print(sess.run(last_val_loss_tf))
print(sess.run(steps_total_tf))
print(sess.run(val_increased_t_tf))
if not args.cross_val:
val_epoch_len = len(reader_val.image_list)
val_num_steps = val_epoch_len // args.batch_size
# Iterate over training steps.
last_val_loss = sess.run(last_val_loss_tf)
val_increased_t = sess.run(val_increased_t_tf)
best_model_step = 0
total_steps = sess.run(steps_total_tf)
for step in range(total_steps, args.num_steps + total_steps):
start_time = time.time()
feed_dict = {step_ph: step}
if step % args.save_pred_every == 0:
# validating
if args.validate:
print("validating: ")
print_assign_vars(sess)
print("Assigned vars for validation. ")
loss_sum = 0
for val_step in trange(val_num_steps,
desc='validation',
leave=True):
loss_value_v, loss1_v, loss2_v, loss3_v = sess.run(
[
reduced_loss_val, loss_sub4_val,
loss_sub24_val, loss_sub124_val
],
feed_dict=feed_dict)
loss_sum = loss_sum + loss_value_v
loss_avg = loss_sum / val_num_steps
if loss_avg > last_val_loss:
val_increased_t = val_increased_t + 1
if val_increased_t >= args.patience:
print(
"Terminated Training, Best Model (at step %d) saved 4 validations ago"
% best_model_step)
f = open("./FINISHED_ICNET", "w+")
f.close()
break
else:
val_increased_t = 0
best_model_step = step
print(
'VALIDATION COMPLETE step {:d}\tVal_Loss Increased {:d}/{:d} times\t total loss = {:.3f}'
' last loss = {:.3f}'.format(step, val_increased_t,
args.patience, loss_avg,
last_val_loss))
last_val_loss = loss_avg
steps_assign = tf.assign(steps_total_tf, step)
last_val_assign = tf.assign(last_val_loss_tf,
last_val_loss)
increased_assign = tf.assign(val_increased_t_tf,
val_increased_t)
print("loss avg " + str(loss_avg))
print(sess.run(steps_assign))
print(sess.run(last_val_assign))
print(sess.run(increased_assign))
# Saving
loss_value, loss1, loss2, loss3, _ = sess.run(
[
reduced_loss, loss_sub4, loss_sub24, loss_sub124,
train_op
],
feed_dict=feed_dict)
save(saver, sess, args.snapshot_dir, step)
# check if max run time is already over
elapsed = time.time() - glob_start_time
if (elapsed + 300) > max_time_seconds:
print("Training stopped: max run time elapsed")
os.remove("./RUNNING_ICNET")
break
else:
loss_value, loss1, loss2, loss3, _ = sess.run(
[
reduced_loss, loss_sub4, loss_sub24, loss_sub124,
train_op
],
feed_dict=feed_dict)
duration = time.time() - start_time
print(
'step {:d} \t total loss = {:.3f}, sub4 = {:.3f}, sub24 = {:.3f}, sub124 = {:.3f} ({:.3f} sec/step)'
.format(step, loss_value, loss1, loss2, loss3, duration))
train_duration = time.time() - glob_start_time
print('Total training time: ' + str(train_duration))
else:
# Training with cross validation
print("Training-Mode CROSS VALIDATION")
val_epoch_len = len(reader_val.image_list)
val_num_steps = val_epoch_len // args.batch_size
print("Val epoch length %d, Num steps %d" %
(val_epoch_len, val_num_steps))
last_val_loss = math.inf
val_not_imp_t = 0
# train
for step in range(1000000):
feed_dict = {step_ph: step}
train_start = time.time()
loss_value, loss1, loss2, loss3, _ = sess.run(
[reduced_loss, loss_sub4, loss_sub24, loss_sub124, train_op],
feed_dict=feed_dict)
duration_t = time.time() - train_start
if args.print_steps:
print(
'step {:d} \t total loss = {:.3f}, sub4 = {:.3f}, sub24 = {:.3f}, sub124 = {:.3f} ({:.3f} sec/step)'
.format(step, loss_value, loss1, loss2, loss3, duration_t))
if step % args.save_pred_every == 0:
# save and validate
# SAVE previously trained model
save(saver, sess, args.snapshot_dir, step)
# Validate
print("validating: ")
start_time = time.time()
print_assign_vars(sess)
print("Assigned vars for validation. ")
loss_sum = 0
for val_step in trange(val_num_steps,
desc='validation',
leave=True):
loss_value_v, loss1_v, loss2_v, loss3_v = sess.run(
[
reduced_loss_val, loss_sub4_val, loss_sub24_val,
loss_sub124_val
],
feed_dict=feed_dict)
loss_sum = loss_sum + loss_value_v
duration = time.time() - start_time
loss_avg = loss_sum / val_num_steps
print(
'VALIDATION COMPLETE step {:d} \t total loss = {:.3f} \t duration = {:.3f}'
.format(step, loss_avg, duration))
if loss_avg >= last_val_loss:
val_not_imp_t = val_not_imp_t + 1
if val_not_imp_t >= 4:
print(
"Terminated Training, Best Model saved 5 validations before"
)
f = open("./FINISHED_ICNET", "w+")
f.close()
break
else:
val_not_imp_t = 0
last_val_loss = loss_avg
# check if max run time is already over
elapsed = time.time() - glob_start_time
if (elapsed + 300) > max_time_seconds:
print("Training stopped: max run time elapsed")
os.remove("./RUNNING_ICNET")
break
coord.request_stop()
coord.join(threads)
def _tf_common_init(self):
gpu_count = len(self.device_ids)
src_size = self.config['input_size']
input_size_wh = (src_size['width'], src_size['height'])
init_lr = self.config['lr']
power = self.config['lr_decreasing']['power']
momentum = self.config['momentum']
weight_decay = self.config['weight_decay']
num_classes = len(self.out_classes)
train_beta_gamma = self.config['train_beta_gamma']
update_mean_var = self.config['update_mean_var']
with tf.device('/cpu:0'):
self.coord = tf.train.Coordinator()
splitted_images = {}
splitted_labels = {}
with tf.name_scope("create_inputs"):
for name, need_shuffle in [
('train', True),
('val', False),
]:
reader = ImageReader(
ia_descrs=self.samples_dct[name],
input_size_wh=input_size_wh,
random_scale=False,
random_mirror=False,
img_mean=IMG_MEAN,
coord=self.coord,
in_pr_meta=self.helper.in_project_meta,
class_to_idx=self.class_title_to_idx,
shuffle=need_shuffle
)
batch_sz = self.config['batch_size'][name]
img_batch, lbl_batch = reader.dequeue(batch_sz * gpu_count)
split_images = tf.split(img_batch, gpu_count, 0)
split_labels = tf.split(lbl_batch, gpu_count, 0)
splitted_images[name] = split_images
splitted_labels[name] = split_labels
global_step = tf.get_variable(
'global_step', [],
initializer=tf.constant_initializer(0), trainable=False, dtype=tf.int32)
self.tf_label = tf.placeholder(dtype=tf.int32) # , shape=[None])
self.tf_prediction = tf.placeholder(dtype=tf.int32) # , shape=[None])
self.tf_metric, self.tf_metric_update = tf.metrics.accuracy(
self.tf_label, self.tf_prediction, name="use_metric_acc"
)
running_vars = tf.get_collection(tf.GraphKeys.LOCAL_VARIABLES, scope="use_metric_acc")
self.running_vars_initializer = tf.variables_initializer(var_list=running_vars)
base_lr = tf.constant(init_lr)
self.step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(base_lr, tf.pow((1 - self.step_ph / self.total_train_iters), power))
opt_conv = tf.train.MomentumOptimizer(learning_rate, momentum)
opt_fc_w = tf.train.MomentumOptimizer(learning_rate * 10.0, momentum)
opt_fc_b = tf.train.MomentumOptimizer(learning_rate * 20.0, momentum)
all_grads_conv = []
all_grads_fc_w = []
all_grads_fc_b = []
losses = []
with tf.variable_scope(tf.get_variable_scope()):
for curr_dev_id in self.device_ids:
with tf.device('/gpu:{}'.format(curr_dev_id)):
with tf.name_scope('clone_{}'.format(curr_dev_id)) as scope:
spl_img = splitted_images['train'][curr_dev_id]
spl_lbl = splitted_labels['train'][curr_dev_id]
net = get_model(spl_img, num_classes)
prediction, gt, self.v1, self.v2 = forward(net, spl_lbl, num_classes)
# print('shapes', tf.shape(prediction), tf.shape(gt), tf.shape(split_labels[i]))
reduced_loss = get_loss(prediction, gt, weight_decay)
losses.append(reduced_loss)
tf.get_variable_scope().reuse_variables()
grads_conv, grads_fc_w, grads_fc_b = get_grads(reduced_loss, train_beta_gamma, update_mean_var)
all_grads_conv.append(grads_conv)
all_grads_fc_w.append(grads_fc_w)
all_grads_fc_b.append(grads_fc_b)
self.total_loss = tf.stack(values=losses)
self.total_loss = tf.reduce_mean(self.total_loss)
mean_grads_conv = average_gradients(all_grads_conv)
mean_grads_fc_w = average_gradients(all_grads_fc_w)
mean_grads_fc_b = average_gradients(all_grads_fc_b)
conv_trainable, fc_w_trainable, fc_b_trainable = get_trainable_vars(train_beta_gamma)
# Apply the gradients to adjust the shared variables.
apply_gradient_conv_op = opt_conv.apply_gradients(zip(mean_grads_conv, conv_trainable), global_step=global_step)
apply_gradient_fc_w_op = opt_fc_w.apply_gradients(zip(mean_grads_fc_w, fc_w_trainable), global_step=global_step)
apply_gradient_fc_b_op = opt_fc_b.apply_gradients(zip(mean_grads_fc_b, fc_b_trainable), global_step=global_step)
# Group all updates to into a single train op.
self.train_op = tf.group(apply_gradient_conv_op, apply_gradient_fc_w_op,
apply_gradient_fc_b_op)
self.total_val_loss, self.v1_val, self.v2_val = get_val_loss(
splitted_images['val'], splitted_labels['val'],
num_classes, weight_decay, self.device_ids
)
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
config.allow_soft_placement = True
config.log_device_placement = False
self.sess = tf.Session(config=config)
init = tf.global_variables_initializer()
self.sess.run(init)
# Saver for storing checkpoints of the model.
self.saver = tf.train.Saver(var_list=tf.global_variables(), save_relative_paths=True)
def main():
# lr_decay = 0.5
# decay_every = 100
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
tf.set_random_seed(args.random_seed)
coord = tf.train.Coordinator()
with tf.name_scope("create_inputs"):
reader = ImageReader(
args.data_list,
input_size,
args.random_scale,
args.random_mirror,
args.ignore_label,
IMG_MEAN,
coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
# Set up tf session and initialize variables.
config = tf.ConfigProto()
# config.gpu_options.allow_growth = True
# config.allow_soft_placement = True
# config.intra_op_parallelism_threads = 1
sess = tf.Session(config = config)
net = unext(image_batch, is_train = True, reuse = False, n_out = NUM_CLASSES)
# Predictions: ignoring all predictions with labels greater or equal than n_classes
raw_output = net.outputs
raw_prediction = tf.reshape(raw_output, [-1, args.num_classes])
label_proc = prepare_label(label_batch, tf.stack(raw_output.get_shape()[1:3]), num_classes=args.num_classes, one_hot=False) # [batch_size, h, w]
raw_gt = tf.reshape(label_proc, [-1,])
indices = tf.squeeze(tf.where(tf.less_equal(raw_gt, args.num_classes - 1)), 1)
gt = tf.cast(tf.gather(raw_gt, indices), dtype = tf.int32)
prediction = tf.gather(raw_prediction, indices)
main_loss = tf.nn.sparse_softmax_cross_entropy_with_logits(logits = prediction, labels = gt)
t_vars = tf.trainable_variables()
l2_losses = [args.weight_decay * tf.nn.l2_loss(v) for v in t_vars if 'kernel' in v.name]
#reduced_loss = 0.5 * tf.reduce_mean(main_loss) + generalised_dice_loss(prediction, gt) + tf.add_n(l2_losses)
reduced_loss = tf.reduce_mean(main_loss) + tf.add_n(l2_losses)
# Processed predictions: for visualisation.
raw_output_up = tf.image.resize_bilinear(raw_output, tf.shape(image_batch)[1:3,])
raw_output_up = tf.argmax(raw_output_up, dimension = 3)
pred = tf.expand_dims(raw_output_up, dim = 3)
# Image summary.
images_summary = tf.py_func(inv_preprocess, [image_batch, args.save_num_images, IMG_MEAN], tf.uint8)
labels_summary = tf.py_func(decode_labels, [label_batch, args.save_num_images, args.num_classes], tf.uint8)
preds_summary = tf.py_func(decode_labels, [pred, args.save_num_images, args.num_classes], tf.uint8)
total_summary = tf.summary.image('images',
tf.concat(axis=2, values=[images_summary, labels_summary, preds_summary]),
max_outputs=args.save_num_images) # Concatenate row-wise.
loss_summary = tf.summary.scalar('TotalLoss', reduced_loss)
summary_writer = tf.summary.FileWriter(args.snapshot_dir,
graph=tf.get_default_graph())
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.train.exponential_decay(base_lr, step_ph, args.num_steps, args.power)
lr_summary = tf.summary.scalar('LearningRate', learning_rate)
#train_op = tf.train.MomentumOptimizer(learning_rate, args.momentum).minimize(reduced_loss, var_list = t_vars)
train_op = tf.train.AdamOptimizer(learning_rate).minimize(reduced_loss, var_list = t_vars)
init = tf.global_variables_initializer()
sess.run(init)
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list = tf.global_variables(), max_to_keep = 10)
ckpt = tf.train.get_checkpoint_state(SNAPSHOT_DIR)
if ckpt and ckpt.model_checkpoint_path:
#restore_vars = list([t for t in tf.global_variables() if not 'uconv1' in t.name])
loader = tf.train.Saver(var_list = tf.global_variables())
load_step = int(os.path.basename(ckpt.model_checkpoint_path).split('-')[1])
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('No checkpoint file found.')
load_step = 0
# Start queue threads.
threads = tf.train.start_queue_runners(coord = coord, sess = sess)
# Iterate over training steps.
save_summary_every = 10
for step in range(args.num_steps):
start_time = time.time()
feed_dict = {step_ph: step}
if not step % args.save_pred_every == 0:
loss_value, _, l_summary, lr_summ = sess.run([reduced_loss, train_op, loss_summary, lr_summary], feed_dict=feed_dict)
duration = time.time() - start_time
elif step % args.save_pred_every == 0:
loss_value, _, summary, l_summary, lr_summ = sess.run([reduced_loss, train_op, total_summary, loss_summary, lr_summary], feed_dict=feed_dict)
duration = time.time() - start_time
save(saver, sess, args.snapshot_dir, step)
summary_writer.add_summary(summary, step)
if step % save_summary_every == 0:
summary_writer.add_summary(l_summary, step)
summary_writer.add_summary(lr_summ, step)
print('step {:d} \t loss = {:.3f}, ({:.3f} sec/step)'.format(step, loss_value, duration))
coord.request_stop()
coord.join(threads)
def main():
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
coord = tf.train.Coordinator()
with tf.name_scope("create_inputs"):
reader = ImageReader(
args.data_list,
input_size,
args.random_scale,
args.random_mirror,
args.ignore_label,
IMG_MEAN,
coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
net = ICNet_BN({'data': image_batch}, is_training=True, num_classes=args.num_classes)
sub4_out = net.layers['sub4_out']
sub24_out = net.layers['sub24_out']
sub124_out = net.layers['conv6_cls']
fc_list = ['conv6_cls']
restore_var = tf.global_variables()
all_trainable = [v for v in tf.trainable_variables() if ('beta' not in v.name and 'gamma' not in v.name) or args.train_beta_gamma]
restore_var = [v for v in tf.global_variables() if not (len([f for f in fc_list if f in v.name])) or not args.not_restore_last]
for v in restore_var:
print(v.name)
loss_sub4 = create_loss(sub4_out, label_batch, args.num_classes, args.ignore_label, args.use_class_weights)
loss_sub24 = create_loss(sub24_out, label_batch, args.num_classes, args.ignore_label, args.use_class_weights)
loss_sub124 = create_loss(sub124_out, label_batch, args.num_classes, args.ignore_label, args.use_class_weights)
l2_losses = [args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables() if 'weights' in v.name]
loss = LAMBDA1 * loss_sub4 + LAMBDA2 * loss_sub24 + LAMBDA3 * loss_sub124
reduced_loss = loss + tf.add_n(l2_losses)
##############################
# visualization and summary
##############################
# Processed predictions: for visualisation.
# Sub 4
raw_output_up4 = tf.image.resize_bilinear(sub4_out, tf.shape(image_batch)[1:3,])
raw_output_up4 = tf.argmax(raw_output_up4, dimension = 3)
pred4 = tf.expand_dims(raw_output_up4, dim = 3)
# Sub 24
raw_output_up24 = tf.image.resize_bilinear(sub24_out, tf.shape(image_batch)[1:3,])
raw_output_up24 = tf.argmax(raw_output_up24, dimension=3)
pred24 = tf.expand_dims(raw_output_up24, dim=3)
# Sub 124
raw_output_up124 = tf.image.resize_bilinear(sub124_out, tf.shape(image_batch)[1:3,])
raw_output_up124 = tf.argmax(raw_output_up124, dimension=3)
pred124 = tf.expand_dims(raw_output_up124, dim=3)
images_summary = tf.py_func(inv_preprocess, [image_batch, SAVE_NUM_IMAGES, IMG_MEAN], tf.uint8)
labels_summary = tf.py_func(decode_labels, [label_batch,SAVE_NUM_IMAGES, args.num_classes], tf.uint8)
preds_summary4 = tf.py_func(decode_labels, [pred4, SAVE_NUM_IMAGES, args.num_classes], tf.uint8)
preds_summary24 = tf.py_func(decode_labels, [pred24, SAVE_NUM_IMAGES, args.num_classes], tf.uint8)
preds_summary124 = tf.py_func(decode_labels, [pred124, SAVE_NUM_IMAGES, args.num_classes], tf.uint8)
total_images_summary = tf.summary.image('images',
tf.concat(axis=2, values=[images_summary, labels_summary, preds_summary124]),
max_outputs=SAVE_NUM_IMAGES) # Concatenate row-wise.
total_summary = [total_images_summary]
loss_summary = tf.summary.scalar('Total_loss', reduced_loss)
total_summary.append(loss_summary)
summary_writer = tf.summary.FileWriter(args.snapshot_dir,
graph=tf.get_default_graph())
##############################
##############################
# Using Poly learning rate policy
if LR_SHEDULE == {}:
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(base_lr, tf.pow((1 - step_ph / args.num_steps), args.power))
else:
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.Variable(LR_SHEDULE.popitem()[1], tf.float32)
lr_summary = tf.summary.scalar('Learning_rate', learning_rate)
total_summary.append(lr_summary)
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
if args.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
grads = tf.gradients(reduced_loss, all_trainable)
train_op = opt_conv.apply_gradients(zip(grads, all_trainable))
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list = tf.global_variables(), max_to_keep = 10)
ckpt = tf.train.get_checkpoint_state(args.snapshot_dir)
if ckpt and ckpt.model_checkpoint_path:
loader = tf.train.Saver(var_list=restore_var)
load_step = int(os.path.basename(ckpt.model_checkpoint_path).split('-')[1])
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('Restore from pre-trained model...')
net.load(args.restore_from, sess, ignore_layers = fc_list)
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
summ_op = tf.summary.merge(total_summary)
# Iterate over training steps.
for step in range(args.num_steps):
start_time = time.time()
if LR_SHEDULE != {}:
if step == LR_SHEDULE.keys()[0]:
tf.assign(learning_rate, LR_SHEDULE.popitem()[0])
feed_dict = {step_ph: step}
if step % args.save_pred_every == 0:
loss_value, loss1, loss2, loss3, _, summary =\
sess.run([reduced_loss, loss_sub4, loss_sub24, loss_sub124, train_op, summ_op], feed_dict = feed_dict)
save(saver, sess, args.snapshot_dir, step)
summary_writer.add_summary(summary, step)
else:
loss_value, loss1, loss2, loss3, _ = sess.run([reduced_loss, loss_sub4, loss_sub24, loss_sub124, train_op], feed_dict=feed_dict)
duration = time.time() - start_time
#print('shape', sess.run(tf.shape(sub124_out)))
#quit()
print('step {:d} \t total loss = {:.3f}, sub4 = {:.3f}, sub24 = {:.3f}, sub124 = {:.3f} ({:.3f} sec/step)'.format(step, loss_value, loss1, loss2, loss3, duration))
coord.request_stop()
coord.join(threads)
def main():
# Create model and start training
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
tf.set_random_seed(args.random_seed)
# Create queue coordinator
coord = tf.train.Coordinator()
# Load Image Reader
with tf.name_scope('create_inputs'):
reader = ImageReader(
args.index_loc,
args.data_dir,
args.mask_dir,
input_size,
args.random_scale,
args.random_mirror,
args.ignore_label,
IMG_MEAN,
coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
mode = tf.contrib.learn.ModeKeys.TRAIN
net = DeepLabResNetModel(image_batch, mode, args.num_classes, args.atrous_blocks)
raw_output = net.output
# Trainable Variables
restore_vars = [v for v in tf.global_variables() if 'fc' not in v.name or not args.not_restore_last]
all_trainable = [v for v in tf.trainable_variables() if 'beta' not in v.name and 'gamma' not in v.name]
fc_trainable = [v for v in all_trainable if 'fc' in v.name]
conv_trainable = [v for v in all_trainable if 'fc' not in v.name]
fc_w_trainable = [v for v in fc_trainable if 'weights' in v.name]
fc_b_trainable = [v for v in fc_trainable if 'biases' in v.name]
# Predictions: ignoring all predictions with labels greater or equal than n_classes
raw_prediction = tf.reshape(raw_output, [-1, args.num_classes])
label_proc = prepare_labels(label_batch, tf.stack(raw_output.get_shape()[1:3]), num_classes=args.num_classes, one_hot=False)
raw_gt = tf.reshape(label_proc, [-1,])
indices = tf.squeeze(tf.where(tf.less_equal(raw_gt, args.num_classes - 1)), 1)
gt = tf.cast(tf.gather(raw_gt, indices), tf.int32)
prediction = tf.gather(raw_prediction, indices)
# Pixel-wise Softmax Loss
loss = tf.nn.sparse_softmax_cross_entropy_with_logits(logits=prediction, labels=gt)
l2_losses = [args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables() if 'weights' in v.name]
reduced_loss = tf.reduce_mean(loss) + tf.add_n(l2_losses)
variable_summaries(reduced_loss, name='loss')
# Processed predictions: for visualization
raw_output_up = tf.image.resize_bilinear(raw_output, tf.shape(image_batch)[1:3,])
raw_output_up = tf.argmax(raw_output_up, dimension=3)
pred = tf.expand_dims(raw_output_up, dim=3)
# Define loss and optimization parameters
base_lr = tf.constant(args.learning_rate, tf.float64)
global_step = tf.Variable(0, trainable=False, name='global_step')
increment_step = tf.assign(global_step, global_step + 1)
learning_rate = tf.scalar_mul(base_lr, tf.pow((1 - global_step / args.num_steps), args.power))
learning_rate = tf.maximum(learning_rate, 8e-7)
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
opt_fc_w = tf.train.MomentumOptimizer(learning_rate * 5.0, args.momentum)
opt_fc_b = tf.train.MomentumOptimizer(learning_rate * 10.0, args.momentum)
grads = tf.gradients(reduced_loss, conv_trainable + fc_w_trainable + fc_b_trainable)
grads_conv = grads[:len(conv_trainable)]
grads_fc_w = grads[len(conv_trainable) : (len(conv_trainable) + len(fc_w_trainable))]
grads_fc_b = grads[(len(conv_trainable) + len(fc_w_trainable)):]
train_op_conv = opt_conv.apply_gradients(zip(grads_conv, conv_trainable))
train_op_fc_w = opt_fc_w.apply_gradients(zip(grads_fc_w, fc_w_trainable))
train_op_fc_b = opt_fc_b.apply_gradients(zip(grads_fc_b, fc_b_trainable))
train_op = tf.group(increment_step, train_op_conv, train_op_fc_w, train_op_fc_b)
# initial_learning_rate = 1e-2
# learning_rate = tf.train.exponential_decay(initial_learning_rate, global_step, 300, 0.96)
# adam = tf.train.AdamOptimizer(learning_rate).minimize(reduced_loss, global_step=global_step)
# Image Summary
model_dir = args.snapshot_dir + args.model_name
images_summary = tf.py_func(inv_preprocess, [image_batch, args.save_num_images, IMG_MEAN], tf.uint8)
preds_summary = tf.py_func(decode_labels, [pred, args.save_num_images, args.num_classes], tf.uint8)
labels_summary = tf.py_func(decode_labels, [label_batch, args.save_num_images, args.num_classes], tf.uint8)
image_summaries = [images_summary, preds_summary, labels_summary]
image_summary = tf.summary.image('images',
tf.concat(axis=2, values=image_summaries),
max_outputs=args.save_num_images)
# Variable Summary
variable_summaries(fc_w_trainable, 'fc_w')
variable_summaries(fc_b_trainable, 'fc_b')
variable_summaries(learning_rate, 'learning_rate')
# variable_summaries(net.weights, 'aconv_w')
# variable_summaries(net.biases, 'aconv_b')
total_summary = tf.summary.merge_all()
summary_writer = tf.summary.FileWriter(model_dir, graph=tf.get_default_graph())
# Set up session
with tf.Session() as sess:
tf.global_variables_initializer().run()
saver = tf.train.Saver(max_to_keep=3)
if args.snapshot_dir is not None and args.model_name is not None and os.path.exists(model_dir):
loader = tf.train.Saver()
load_model(loader, sess, model_dir)
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# train_op = adam
for step in range(args.num_steps):
start_time = time.time()
if step % args.save_pred_every == 0:
feed = [reduced_loss, image_batch, label_batch, pred, total_summary, global_step, train_op]
loss_value, images, labels, preds, summary, total_steps, _ = sess.run(feed)
summary_writer.add_summary(summary, total_steps)
save_model(saver, sess, model_dir, global_step)
else:
feed = [reduced_loss, global_step, train_op]
loss_value, total_steps, _ = sess.run(feed)
duration = time.time() - start_time
results = 'global step: {:d}, step: {:d} \t loss = {:.3f}, ({:.3f} secs)'\
.format(total_steps, step, loss_value, duration)
if step % WRITE_EVERY == 0:
with open(WRITE_FILE, 'a') as f:
f.write(results + '\n')
print(results)
coord.request_stop()
coord.join(threads)
def evaluate_checkpoint(model_path, args):
coord = tf.train.Coordinator()
tf.reset_default_graph()
reader = ImageReader(
args.data_list,
INPUT_SIZE,
random_scale = False,
random_mirror = False,
ignore_label = IGNORE_LABEL,
img_mean = IMG_MEAN,
coord = coord,
train = False)
image_batch, label_batch = reader.dequeue(batch_size)
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
# Start queue threads.
threads = tf.train.start_queue_runners(coord = coord, sess = sess)
# Create network.
net = ICNet_BN({'data': image_batch}, num_classes = num_classes)
# Which variables to load.
restore_var = tf.global_variables()
# Predictions.
raw_output = net.layers['conv6_cls']
raw_output_up = tf.image.resize_bilinear(raw_output, size = INPUT_SIZE, align_corners = True)
raw_output_up = tf.argmax(raw_output_up, dimension = 3)
pred = tf.expand_dims(raw_output_up, dim = 3)
# mIoU
pred_flatten = tf.reshape(pred, [-1,])
raw_gt = tf.reshape(label_batch, [-1,])
if args.ignore_zero:
indices = tf.squeeze(tf.where(
tf.logical_and(
tf.less_equal(raw_gt, num_classes - 1),
tf.greater(raw_gt, 0)
),),
1)
else:
indices = tf.squeeze(tf.where(tf.less_equal(raw_gt, num_classes - 1)), 1)
#indices = tf.squeeze(tf.where(tf.less_equal(raw_gt, num_classes - 1)), 1)
gt = tf.cast(tf.gather(raw_gt, indices), tf.int32)
pred = tf.gather(pred_flatten, indices)
metric, op = tf.contrib.metrics.streaming_mean_iou(pred, gt, num_classes = num_classes)
mIoU, update_op = metric, op
# Summaries
miou_op = tf.summary.scalar('mIOU', mIoU)
start = time.time()
logging.info('Starting evaluation at ' + time.strftime('%Y-%m-%d-%H:%M:%S',
time.gmtime()))
sess.run(tf.global_variables_initializer())
sess.run(tf.local_variables_initializer())
saver = tf.train.Saver(var_list = restore_var)
load(saver, sess, model_path)
for step in range(num_steps):
preds, _ = sess.run([pred, update_op])
if step % 500 == 0:
print('Finish {0}/{1}'.format(step + 1, num_steps))
iou, summ = sess.run([mIoU, miou_op])
sess.close()
coord.request_stop()
#coord.join(threads)
return summ, iou
def main():
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
if args.center_crop_size is None:
center_crop_size = None
else:
hc, wc = map(int, args.center_crop_size.split(','))
center_crop_size = (hc, wc)
with tf.name_scope("create_inputs"):
reader = ImageReader(
DATA_DIR,
DATA_LIST_PATH,
input_size,
center_crop_size,
args.random_scale,
args.random_mirror,
args.ignore_label,
IMG_MEAN)
image_batch, label_batch = reader.dequeue(args.batch_size)
net = ICNet_BN({'data': image_batch}, is_training=True, num_classes=args.num_classes, filter_scale=args.filter_scale)
sub4_recls, sub24_recls, sub124_recls = bn_common.extend_reclassifier(net)
restore_var = tf.global_variables()
all_trainable = [v for v in tf.trainable_variables() if ('beta' not in v.name and 'gamma' not in v.name) or args.train_beta_gamma]
loss_sub4 = create_loss(sub4_recls, label_batch, args)
loss_sub24 = create_loss(sub24_recls, label_batch, args)
loss_sub124 = create_loss(sub124_recls, label_batch, args)
l2_losses = [args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables()
if ('weights' in v.name) or ('kernel' in v.name)]
reduced_loss = LAMBDA1 * loss_sub4 + LAMBDA2 * loss_sub24 + LAMBDA3 * loss_sub124 + tf.add_n(l2_losses)
# print(tf.get_variable_scope().name)
# print(','.join([v.__op.original_name_scope for v in l2_losses]))
# print(','.join([v for v in tf.trainable_variables() if ('beta' in v.name or 'gamma' in v.name)]))
# tf.summary.FileWriter('./summary', tf.get_default_graph())
# exit(0)
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(base_lr, tf.pow((1 - step_ph / args.num_steps), args.power))
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
if args.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
grads = tf.gradients(reduced_loss, all_trainable)
train_op = opt_conv.apply_gradients(zip(grads, all_trainable))
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
sess.run(tf.global_variables_initializer())
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=99)
ckpt = tf.train.get_checkpoint_state(args.snapshot_dir)
if ckpt and ckpt.model_checkpoint_path:
loader = tf.train.Saver(var_list=restore_var)
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('Restore from pre-trained model...')
net.load(args.restore_from, sess)
# Start queue threads.
coord = tf.train.Coordinator()
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# Iterate over training steps.
for step in range(args.num_steps):
start_time = time.time()
feed_dict = {step_ph: step}
if step % args.save_pred_every == 0:
loss_value, loss1, loss2, loss3, _ = sess.run([reduced_loss, loss_sub4, loss_sub24, loss_sub124, train_op], feed_dict=feed_dict)
save(saver, sess, args.snapshot_dir, step)
else:
loss_value, loss1, loss2, loss3, _ = sess.run([reduced_loss, loss_sub4, loss_sub24, loss_sub124, train_op], feed_dict=feed_dict)
duration = time.time() - start_time
print('step {:d} \t total loss = {:.3f}, sub4 = {:.3f}, sub24 = {:.3f}, sub124 = {:.3f} ({:.3f} sec/step)'.format(step, loss_value, loss1, loss2, loss3, duration))
coord.request_stop()
coord.join(threads)
sess.close()
def run(self):
tf.set_random_seed(self.random_seed)
coord = tf.train.Coordinator()
# 读取数据
with tf.name_scope("create_inputs"):
reader = ImageReader(self.data_dir, self.data_train_list,
self.input_size, self.random_scale,
self.random_mirror, self.ignore_label,
self.img_mean, coord)
image_batch, label_batch = reader.dequeue(self.batch_size)
# 网络
net = PSPNet({'data': image_batch},
is_training=True,
num_classes=self.num_classes)
raw_output = net.layers['conv6']
# According from the prototxt in Caffe implement, learning rate must multiply by 10.0 in pyramid module
fc_list = [
'conv5_3_pool1_conv', 'conv5_3_pool2_conv', 'conv5_3_pool3_conv',
'conv5_3_pool6_conv', 'conv6', 'conv5_4'
]
# 所有的变量
restore_var = [v for v in tf.global_variables()]
# 所有可训练变量
all_trainable = [
v for v in tf.trainable_variables()
if ('beta' not in v.name and 'gamma' not in v.name)
or self.train_beta_gamma
]
# fc_list中的全连接层可训练变量和卷积可训练变量
fc_trainable = [
v for v in all_trainable if v.name.split('/')[0] in fc_list
]
conv_trainable = [
v for v in all_trainable if v.name.split('/')[0] not in fc_list
] # lr * 1.0
fc_w_trainable = [v for v in fc_trainable
if 'weights' in v.name] # lr * 10.0
fc_b_trainable = [v for v in fc_trainable
if 'biases' in v.name] # lr * 20.0
# 验证
assert (len(all_trainable) == len(fc_trainable) + len(conv_trainable))
assert (len(fc_trainable) == len(fc_w_trainable) + len(fc_b_trainable))
# Predictions: ignoring all predictions with labels greater or equal than n_classes
raw_prediction = tf.reshape(raw_output, [-1, self.num_classes])
label_process = prepare_label(label_batch,
tf.stack(raw_output.get_shape()[1:3]),
num_classes=self.num_classes,
one_hot=False) # [batch_size, h, w]
raw_gt = tf.reshape(label_process, [
-1,
])
indices = tf.squeeze(
tf.where(tf.less_equal(raw_gt, self.num_classes - 1)), 1)
gt = tf.cast(tf.gather(raw_gt, indices), tf.int32)
prediction = tf.gather(raw_prediction, indices)
# Pixel-wise softmax loss.
loss = tf.nn.sparse_softmax_cross_entropy_with_logits(
logits=prediction, labels=gt)
l2_losses = [
self.weight_decay * tf.nn.l2_loss(v)
for v in tf.trainable_variables() if 'weights' in v.name
]
reduced_loss = tf.reduce_mean(loss) + tf.add_n(l2_losses)
# Using Poly learning rate policy
base_lr = tf.constant(self.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(
base_lr, tf.pow((1 - step_ph / self.num_steps), self.power))
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
update_ops = None if not self.update_mean_var else tf.get_collection(
tf.GraphKeys.UPDATE_OPS)
# 对变量以不同的学习率优化：分别求梯度、应用梯度
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, self.momentum)
opt_fc_w = tf.train.MomentumOptimizer(learning_rate * 10.0,
self.momentum)
opt_fc_b = tf.train.MomentumOptimizer(learning_rate * 20.0,
self.momentum)
grads = tf.gradients(
reduced_loss, conv_trainable + fc_w_trainable + fc_b_trainable)
grads_conv = grads[:len(conv_trainable)]
grads_fc_w = grads[len(conv_trainable):(len(conv_trainable) +
len(fc_w_trainable))]
grads_fc_b = grads[(len(conv_trainable) + len(fc_w_trainable)):]
train_op_conv = opt_conv.apply_gradients(
zip(grads_conv, conv_trainable))
train_op_fc_w = opt_fc_w.apply_gradients(
zip(grads_fc_w, fc_w_trainable))
train_op_fc_b = opt_fc_b.apply_gradients(
zip(grads_fc_b, fc_b_trainable))
train_op = tf.group(train_op_conv, train_op_fc_w, train_op_fc_b)
pass
sess = tf.Session(config=self.config)
sess.run(tf.global_variables_initializer())
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=10)
# 加载模型
ckpt = tf.train.get_checkpoint_state(self.log_dir)
if ckpt and ckpt.model_checkpoint_path:
tf.train.Saver(var_list=restore_var).restore(
sess, ckpt.model_checkpoint_path)
Tools.print_info("Restored model parameters from {}".format(
ckpt.model_checkpoint_path))
else:
Tools.print_info('No checkpoint file found.')
pass
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# Iterate over training steps.
for step in range(self.num_steps):
start_time = time.time()
if step % self.save_pred_freq == 0:
loss_value, _ = sess.run([reduced_loss, train_op],
feed_dict={step_ph: step})
saver.save(sess, self.checkpoint_path, global_step=step)
Tools.print_info('The checkpoint has been created.')
else:
loss_value, _ = sess.run([reduced_loss, train_op],
feed_dict={step_ph: step})
duration = time.time() - start_time
Tools.print_info(
'step {:d} \t loss = {:.3f}, ({:.3f} sec/step)'.format(
step, loss_value, duration))
coord.request_stop()
coord.join(threads)
pass
def main():
temp_flags = FLAGS.__flags.items()
temp_flags.sort()
for params, value in FLAGS.__flags.items():
print('{}: {}'.format(params, value))
input_size = (FLAGS.train_image_size, FLAGS.train_image_size)
tf.set_random_seed(1234)
coord = tf.train.Coordinator()
reader = ImageReader(FLAGS.data_dir, FLAGS.data_list, input_size,
FLAGS.random_scale, FLAGS.random_mirror,
FLAGS.ignore_label, IMG_MEAN, coord)
image_batch, label_batch = reader.dequeue(FLAGS.batch_size)
raw_output = MobileNet(image_batch,
isTraining=True,
updateBeta=FLAGS.update_beta)
psp_list = [
'conv_ds_15a', 'conv_ds_15b', 'conv_ds_15c', 'conv_ds_15d',
'conv_ds_16', 'conv_ds_17'
]
all_trainable = [v for v in tf.trainable_variables()]
if FLAGS.update_beta == False:
all_trainable = [v for v in all_trainable if 'beta' not in v.name]
psp_trainable = [
v for v in all_trainable if v.name.split('/')[1] in psp_list and (
'weights' in v.name or 'biases' in v.name)
]
conv_trainable = [v for v in all_trainable
if v not in psp_trainable] # lr * 1.0
psp_w_trainable = [v for v in psp_trainable
if 'weights' in v.name] # lr * 10.0
psp_b_trainable = [v for v in psp_trainable
if 'biases' in v.name] # lr * 20.0
assert (len(all_trainable) == len(psp_trainable) + len(conv_trainable))
assert (len(psp_trainable) == len(psp_w_trainable) + len(psp_b_trainable))
# Predictions: ignoring all predictions with labels greater or equal than n_classes
raw_prediction = tf.reshape(raw_output, [-1, FLAGS.num_classes])
label_proc = prepare_label(label_batch,
tf.stack(raw_output.get_shape()[1:3]),
num_classes=FLAGS.num_classes,
one_hot=False) # [batch_size, h, w]
raw_gt = tf.reshape(label_proc, [
-1,
])
indices = tf.squeeze(
tf.where(tf.less_equal(raw_gt, FLAGS.num_classes - 1)), 1)
gt = tf.cast(tf.gather(raw_gt, indices), tf.int32)
prediction = tf.gather(raw_prediction, indices)
# Pixel-wise softmax loss.
loss = tf.nn.sparse_softmax_cross_entropy_with_logits(logits=prediction,
labels=gt)
# Regularisation loss
l2_losses = [
FLAGS.weight_decay * tf.nn.l2_loss(v)
for v in tf.trainable_variables() if 'weights' in v.name
]
reduced_loss = tf.reduce_mean(loss) + tf.add_n(l2_losses)
#TODO auxilary loss
#Using Poly learning rate policy
current_epoch = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.train.polynomial_decay(
FLAGS.start_learning_rate,
current_epoch,
FLAGS.decay_steps,
end_learning_rate=FLAGS.end_learning_rate,
power=FLAGS.learning_rate_decay_power,
name="poly_learning_rate")
if FLAGS.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
if FLAGS.optimizer == 'momentum':
opt_conv = tf.train.MomentumOptimizer(learning_rate,
FLAGS.momentum)
opt_psp_w = tf.train.MomentumOptimizer(learning_rate * 10.0,
FLAGS.momentum)
opt_psp_b = tf.train.MomentumOptimizer(learning_rate * 20.0,
FLAGS.momentum)
elif FLAGS.optimizer == 'rmsprop':
opt_conv = tf.train.RMSPropOptimizer(
learning_rate,
decay=FLAGS.rmsprop_decay,
momentum=FLAGS.rmsprop_momentum,
epsilon=FLAGS.opt_epsilon)
opt_psp_w = tf.train.RMSPropOptimizer(
learning_rate * 10.0,
decay=FLAGS.rmsprop_decay,
momentum=FLAGS.rmsprop_momentum,
epsilon=FLAGS.opt_epsilon)
opt_psp_b = tf.train.RMSPropOptimizer(
learning_rate * 20.0,
decay=FLAGS.rmsprop_decay,
momentum=FLAGS.rmsprop_momentum,
epsilon=FLAGS.opt_epsilon)
grads = tf.gradients(
reduced_loss, conv_trainable + psp_w_trainable + psp_b_trainable)
grads_conv = grads[:len(conv_trainable)]
grads_psp_w = grads[len(conv_trainable):(len(conv_trainable) +
len(psp_w_trainable))]
grads_psp_b = grads[(len(conv_trainable) + len(psp_w_trainable)):]
train_op_conv = opt_conv.apply_gradients(
zip(grads_conv, conv_trainable))
train_op_psp_w = opt_psp_w.apply_gradients(
zip(grads_psp_w, psp_w_trainable))
train_op_psp_b = opt_psp_b.apply_gradients(
zip(grads_psp_b, psp_b_trainable))
train_op = tf.group(train_op_conv, train_op_psp_w, train_op_psp_b)
restore_var = tf.global_variables()
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=500)
load(sess, FLAGS.pretrained_checkpoint, restore_var)
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# Iterate over training steps.
for epoch in range(FLAGS.start_epoch,
FLAGS.start_epoch + FLAGS.num_epochs):
total_loss = 0.0
for step in range(1, FLAGS.num_steps + 1):
start_time = time.time()
feed_dict = {current_epoch: epoch}
loss_value, _ = sess.run([reduced_loss, train_op],
feed_dict=feed_dict)
duration = time.time() - start_time
print('step {:d} \t loss = {:.3f}, ({:.3f} sec/step)'.format(
step, loss_value, duration))
#TODO ignore NaN loss
total_loss += loss_value
save(saver, sess, FLAGS.log_dir, epoch)
total_loss /= FLAGS.num_steps
print('Epoch {:d} completed! Total Loss = {:.3f}'.format(
epoch, total_loss))
coord.request_stop()
coord.join(threads)
def main():
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
tf.set_random_seed(args.random_seed)
coord = tf.train.Coordinator()
with tf.name_scope("create_inputs"):
reader = ImageReader(args.data_list, input_size, args.random_scale,
args.random_mirror, args.ignore_label, IMG_MEAN,
coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
net = PSPNet50({'data': image_batch},
is_training=True,
num_classes=args.num_classes)
raw_output = net.layers['conv6']
# According from the prototxt in Caffe implement, learning rate must multiply by 10.0 in pyramid module
fc_list = [
'conv5_3_pool1_conv', 'conv5_3_pool2_conv', 'conv5_3_pool3_conv',
'conv5_3_pool6_conv', 'conv6', 'conv5_4'
]
restore_var = [
v for v in tf.global_variables()
if not (len([f for f in fc_list
if f in v.name])) or not args.not_restore_last
]
all_trainable = [
v for v in tf.trainable_variables()
if 'gamma' not in v.name and 'beta' not in v.name
]
fc_trainable = [
v for v in all_trainable if v.name.split('/')[0] in fc_list
]
conv_trainable = [
v for v in all_trainable if v.name.split('/')[0] not in fc_list
] # lr * 1.0
fc_w_trainable = [v for v in fc_trainable
if 'weights' in v.name] # lr * 10.0
fc_b_trainable = [v for v in fc_trainable
if 'biases' in v.name] # lr * 20.0
assert (len(all_trainable) == len(fc_trainable) + len(conv_trainable))
assert (len(fc_trainable) == len(fc_w_trainable) + len(fc_b_trainable))
# Predictions: ignoring all predictions with labels greater or equal than n_classes
raw_prediction = tf.reshape(raw_output, [-1, args.num_classes])
label_proc = prepare_label(label_batch,
tf.stack(raw_output.get_shape()[1:3]),
num_classes=args.num_classes,
one_hot=False) # [batch_size, h, w]
raw_gt = tf.reshape(label_proc, [
-1,
])
indices = tf.squeeze(tf.where(tf.less_equal(raw_gt, args.num_classes - 1)),
1)
gt = tf.cast(tf.gather(raw_gt, indices), tf.int32)
prediction = tf.gather(raw_prediction, indices)
# Pixel-wise softmax loss.
loss = tf.nn.sparse_softmax_cross_entropy_with_logits(logits=prediction,
labels=gt)
# Make mistakes for class N more important for network
if USE_CLASS_WEIGHTS:
if len(CLASS_WEIGHTS) != NUM_CLASSES:
print('Incorrect class weights, it will be not used')
else:
mask = tf.zeros_like(loss)
for i, w in enumerate(CLASS_WEIGHTS):
mask = mask + tf.cast(tf.equal(gt, i),
tf.float32) * tf.constant(w)
loss = loss * mask
l2_losses = [
args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables()
if 'weights' in v.name
]
reduced_loss = tf.reduce_mean(loss) + tf.add_n(l2_losses)
# Processed predictions: for visualisation.
raw_output_up = tf.image.resize_bilinear(raw_output,
tf.shape(image_batch)[1:3, ])
raw_output_up = tf.argmax(raw_output_up, dimension=3)
pred = tf.expand_dims(raw_output_up, dim=3)
# Image summary.
images_summary = tf.py_func(inv_preprocess,
[image_batch, args.save_num_images, IMG_MEAN],
tf.uint8)
labels_summary = tf.py_func(
decode_labels, [label_batch, args.save_num_images, args.num_classes],
tf.uint8)
preds_summary = tf.py_func(decode_labels,
[pred, args.save_num_images, args.num_classes],
tf.uint8)
total_summary = tf.summary.image(
'images',
tf.concat(axis=2,
values=[images_summary, labels_summary, preds_summary]),
max_outputs=args.save_num_images) # Concatenate row-wise.
summary_writer = tf.summary.FileWriter(args.snapshot_dir,
graph=tf.get_default_graph())
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(
base_lr, tf.pow((1 - step_ph / args.num_steps), args.power))
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
if args.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
opt_fc_w = tf.train.MomentumOptimizer(learning_rate * 10.0,
args.momentum)
opt_fc_b = tf.train.MomentumOptimizer(learning_rate * 20.0,
args.momentum)
grads = tf.gradients(reduced_loss,
conv_trainable + fc_w_trainable + fc_b_trainable)
grads_conv = grads[:len(conv_trainable)]
grads_fc_w = grads[len(conv_trainable):(len(conv_trainable) +
len(fc_w_trainable))]
grads_fc_b = grads[(len(conv_trainable) + len(fc_w_trainable)):]
train_op_conv = opt_conv.apply_gradients(
zip(grads_conv, conv_trainable))
train_op_fc_w = opt_fc_w.apply_gradients(
zip(grads_fc_w, fc_w_trainable))
train_op_fc_b = opt_fc_b.apply_gradients(
zip(grads_fc_b, fc_b_trainable))
train_op = tf.group(train_op_conv, train_op_fc_w, train_op_fc_b)
# Set up tf session and initialize variables.
config = tf.ConfigProto()
# config.gpu_options.allow_growth = True
# config.allow_soft_placement = True
# config.intra_op_parallelism_threads = 1
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=10)
ckpt = tf.train.get_checkpoint_state(SNAPSHOT_DIR)
if ckpt and ckpt.model_checkpoint_path:
loader = tf.train.Saver(var_list=restore_var)
load_step = int(
os.path.basename(ckpt.model_checkpoint_path).split('-')[1])
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('No checkpoint file found.')
load_step = 0
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# Iterate over training steps.
for step in range(args.num_steps):
start_time = time.time()
feed_dict = {step_ph: step}
if step % args.save_pred_every == 0:
loss_value, _, summary = sess.run(
[reduced_loss, train_op, total_summary], feed_dict=feed_dict)
summary_writer.add_summary(summary, step)
save(saver, sess, args.snapshot_dir, step)
else:
z, t, o, p, loss_value, _ = sess.run(
[raw_gt, raw_output, gt, prediction, reduced_loss, train_op],
feed_dict=feed_dict)
print(z.shape, t.shape, o.shape, p.shape)
duration = time.time() - start_time
print('step {:d} \t loss = {:.3f}, ({:.3f} sec/step)'.format(
step, loss_value, duration))
coord.request_stop()
coord.join(threads)
def evaluate_checkpoint(model_path, args):
coord = tf.train.Coordinator()
tf.reset_default_graph()
reader = ImageReader(
args.data_list,
INPUT_SIZE,
random_scale = False,
random_mirror = False,
ignore_label = IGNORE_LABEL,
img_mean = IMG_MEAN,
coord = coord,
train = False)
image_batch, label_batch = reader.dequeue(args.batch_size)
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
# Start queue threads.
threads = tf.train.start_queue_runners(coord = coord, sess = sess)
# Create network.
#net = ICNet_BN({'data': image_batch}, is_training = False, num_classes = num_classes)
net = unext(image_batch, is_train = False, n_out = NUM_CLASSES)
# Predictions.
#raw_output = net.layers['conv6']
raw_output = net.outputs
raw_output_up = tf.image.resize_bilinear(raw_output, size = INPUT_SIZE, align_corners = True)
raw_output_up = tf.argmax(raw_output_up, dimension = 3)
pred = tf.expand_dims(raw_output_up, dim = 3)
# mIoU
pred_flatten = tf.reshape(pred, [-1,])
raw_gt = tf.reshape(label_batch, [-1,])
indices = tf.squeeze(tf.where(tf.not_equal(raw_gt, IGNORE_LABEL)), 1)
gt = tf.cast(tf.gather(raw_gt, indices), tf.int32)
pred = tf.gather(pred_flatten, indices)
iou_metric, iou_op = tf.metrics.mean_iou(pred, gt, num_classes = num_classes)
acc_metric, acc_op = tf.metrics.accuracy(pred, gt)
# Summaries
iou_summ_op = tf.summary.scalar('mIOU', iou_metric)
acc_summ_op = tf.summary.scalar('Accuracy', acc_metric)
start = time.time()
logging.info('Starting evaluation at ' + time.strftime('%Y-%m-%d-%H:%M:%S',
time.gmtime()))
sess.run(tf.global_variables_initializer())
sess.run(tf.local_variables_initializer())
saver = tf.train.Saver(var_list = tf.global_variables())
load(saver, sess, model_path)
for step in range(int(num_steps / batch_size)):
preds, _, _ = sess.run([raw_output_up, iou_op, acc_op])
if step % int(100 / batch_size) == 0:
print('Finish {0}/{1}'.format(step + 1, int(num_steps / batch_size)))
iou, iou_summ, acc, acc_summ = sess.run([iou_metric, iou_summ_op, acc_metric, acc_summ_op])
sess.close()
coord.request_stop()
#coord.join(threads)
return iou, iou_summ, acc, acc_summ
def main(argv=None):
input_size = (cfg.IMAGE_HEIGHT, cfg.IMAGE_WIDTH)
# Create queue coordinator.
coord = tf.train.Coordinator()
# Load reader.
# Train
print('Train ' + cfg.train_data_list)
with tf.name_scope("create_inputs"):
reader = ImageReader(cfg.train_data_dir, cfg.train_data_list,
input_size, cfg.random_scale, cfg.random_resize,
cfg.random_mirror, cfg.random_color,
cfg.random_crop_pad, cfg.ignore_label,
cfg.IMG_MEAN, coord)
image_batch, label_batch = reader.dequeue(cfg.batch_size)
# Define Network
pred_annotation, logits = inference_deeplabv3_plus_16(
image_batch, is_training=True) # Modified
logits_loss = cross_entropy_loss(logits,
label_batch) # loss1 for ECP dataset
# logits_loss = weighted_cross_entropy_loss(logits, label_batch) # loss2 for RueMonge dataset
# logits_loss = weighted_cross_entropy_loss_4class(logits, label_batch)
# # PSPNet
# pred_annotation, logits, logits_dsn = inference_pspnet(image_batch, is_training=True) # PSPNet
# # logits_loss = cross_entropy_loss(logits, label_batch) + \
# # cross_entropy_loss(logits_dsn, label_batch) # loss1 for ECP dataset
# logits_loss = weighted_cross_entropy_loss(logits, label_batch) + \
# weighted_cross_entropy_loss(logits_dsn, label_batch) # loss2 for RueMonge dataset
ce_loss = logits_loss # cross entropy loss
# Show acc for validation or train dataset
if cfg.is_time_acc or cfg.is_epoch_acc:
with tf.variable_scope('', reuse=True):
val_image_batch = tf.placeholder(
tf.float32,
shape=[1, IMAGE_HEIGHT, IMAGE_WIDTH, 3],
name="input_image")
f = open(cfg.val_data_list, 'r')
val_img_list = []
val_label_list = []
for line in f:
try:
image_name, label = line.strip("\n").split(' ')
except ValueError: # Adhoc for test.
image_name = label = line.strip("\n")
val_img_list.append(cfg.val_data_dir + image_name)
val_label_list.append(cfg.val_data_dir + label)
_, val_logits = inference_deeplabv3_plus_16_init(
val_image_batch, is_training=False) # Modified
# _, val_logits, _ = inference_pspnet(val_image_batch, is_training=False) # PSPNet
val_logits_softmax = tf.nn.softmax(val_logits)
tf.group()
l2_loss = [
weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables()
if 'weights' or 'w' in v.name or 'W' in v.name
] # encode: W, facade: weights
l2_losses = tf.add_n(l2_loss)
# Total loss
loss = ce_loss + l2_losses # + stru_loss
tf.summary.scalar("loss_ce", ce_loss)
tf.summary.scalar("l2_losses", l2_losses)
tf.summary.scalar("total_loss", loss)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
# Using Poly learning rate policy
base_lr = tf.constant(cfg.learning_rate)
learning_rate = tf.scalar_mul(base_lr,
tf.pow((1 - step_ph / global_step), power))
trainable_var = tf.trainable_variables()
# Optimizer
if cfg.optimizer == 'Adam':
optimizer = tf.train.AdamOptimizer(learning_rate)
print('Optimizer: Adam')
elif cfg.optimizer == 'Adam2':
optimizer = tf.train.AdamOptimizer(learning_rate,
beta1=0.9,
beta2=0.99)
elif cfg.optimizer == 'SGD':
optimizer = tf.train.GradientDescentOptimizer(learning_rate)
elif cfg.optimizer == 'Momentum':
optimizer = tf.train.MomentumOptimizer(learning_rate, momentum=0.9)
print('Optimizer: Momentum')
elif cfg.optimizer == 'RMSProp':
optimizer = tf.train.RMSPropOptimizer(learning_rate)
# grads = optimizer.compute_gradients(loss, var_list=trainable_var)
# train_op = optimizer.apply_gradients(grads)
## Optimizer definition - nothing different from any classical example
opt = optimizer
## Retrieve all trainable variables you defined in your graph
if cfg.freeze_bn:
tvs = [
v for v in tf.trainable_variables()
if 'beta' not in v.name and 'gamma' not in v.name
]
else:
tvs = [v for v in tf.trainable_variables()]
## Creation of a list of variables with the same shape as the trainable ones
# initialized with 0s
accum_vars = [
tf.Variable(tf.zeros_like(tv.initialized_value()), trainable=False)
for tv in tvs
]
zero_ops = [tv.assign(tf.zeros_like(tv)) for tv in accum_vars]
## Calls the compute_gradients function of the optimizer to obtain... the list of gradients
gvs = opt.compute_gradients(loss, tvs)
## Adds to each element from the list you initialized earlier with zeros its gradient (works because accum_vars and gvs are in the same order)
accum_ops = [accum_vars[i].assign_add(gv[0]) for i, gv in enumerate(gvs)]
## Define the training step (part with variable value update)
train_step = opt.apply_gradients([(accum_vars[i], gv[1])
for i, gv in enumerate(gvs)])
print("Setting up summary op...")
summary_op = tf.summary.merge_all()
# Set gpu usage
config = tf.ConfigProto(allow_soft_placement=True)
config.gpu_options.allow_growth = True
config.gpu_options.per_process_gpu_memory_fraction = 1.0
sess = tf.Session(config=config)
print("Setting up Saver...")
saver = tf.train.Saver(max_to_keep=cfg.model_save_num)
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# create two summary writers to show training loss and validation loss in the same graph
# need to create two folders 'train' and 'validation' inside FLAGS.logs_dir
if not os.path.exists(cfg.logs_dir):
os.makedirs(cfg.logs_dir)
train_writer = tf.summary.FileWriter(cfg.logs_dir + 'train', sess.graph)
test_writer = tf.summary.FileWriter(cfg.logs_dir + 'test')
if not os.path.exists(cfg.save_dir):
os.makedirs(cfg.save_dir)
count = 0
files = os.path.join(cfg.save_dir + 'model.ckpt-*.index')
sfile = glob.glob(files)
if len(sfile) > 0:
sess.run(tf.global_variables_initializer())
sfile = glob.glob(files)
steps = []
for s in sfile:
part = s.split('.')
step = int(part[1].split('-')[1])
steps.append(step)
count = max(steps)
model = cfg.save_dir + 'model.ckpt-' + str(count)
print('\nRestoring weights from: ' + model)
saver.restore(sess, model)
print('End Restore')
else:
# # restore from pre-train on imagenet
variables = tf.global_variables()
sess.run(tf.variables_initializer(variables, name='init'))
# # tensorflow 1
if os.path.exists(cfg.pre_trained_model) or os.path.exists(
cfg.pre_trained_model + '.index'):
var_keep_dic = get_variables_in_checkpoint_file(
cfg.pre_trained_model)
# Get the variables to restore, ignoring the variables to fix
variables_to_restore = get_variables_to_restore(
variables, var_keep_dic)
if len(variables_to_restore) > 0:
restorer = tf.train.Saver(variables_to_restore)
restorer.restore(sess, cfg.pre_trained_model)
print('Model pre-train loaded from ' + cfg.pre_trained_model)
else:
print('Model inited random.')
else:
print('Model inited random.')
# RGB -> BGR
if 'res' in cfg.pre_trained_model:
conv1_rgb = tf.get_variable("conv1_rgb", [7, 7, 3, 64],
trainable=False)
restorer_fc = tf.train.Saver(
{'resnet_v1_50/conv1/weights': conv1_rgb})
restorer_fc.restore(sess, cfg.pre_trained_model)
sess.run(tf.assign(variables[0], tf.reverse(conv1_rgb, [2])))
print('ResNet Conv 1 RGB->BGR')
elif 'vgg' in cfg.pre_trained_model:
conv1_rgb = tf.get_variable("conv1_rgb", [3, 3, 3, 64],
trainable=False)
restorer_fc = tf.train.Saver(
{'vgg_16/conv1/conv1_1/weights': conv1_rgb})
restorer_fc.restore(sess, cfg.pre_trained_model)
sess.run(tf.assign(variables[0], tf.reverse(conv1_rgb, [2])))
print('Vgg Conv 1 RGB->BGR')
_mask = pred_annotation[0]
_img = image_batch[0]
_gt = label_batch[0]
if not os.path.exists(cfg.save_dir + 'temp_img'):
os.mkdir(cfg.save_dir + 'temp_img')
print('Start train ' + cfg.data_dir)
print('---------------Hyper Paras---------------')
print('-- batch_size: ', cfg.batch_size)
print('-- Gradient Accumulation: ', cfg.Gradient_Accumulation)
print('-- image height: ', cfg.IMAGE_HEIGHT)
print('-- image width: ', cfg.IMAGE_WIDTH)
print('-- learning rate: ', cfg.learning_rate)
print('-- GPU: ', cfg.use_gpu)
print('-- optimizer: ', cfg.optimizer)
print('-- class num: ', cfg.NUM_OF_CLASSESS)
print('-- total iter: ', cfg.total_iter)
print('-- Time acc: ', cfg.is_time_acc)
print('-- Acc interval: ', cfg.acc_interval)
print('-- Start Acc iter: ', cfg.start_show_iter)
print('-- Is save step: ', cfg.is_save_step)
print('-- Start save step: ', cfg.start_save_step)
print('-- save ecpoch: ', cfg.save_step_inter)
print('-- model save num: ', cfg.model_save_num)
print('-- summary interval: ', cfg.summary_interval)
print('-- weight decay: ', cfg.weight_decay)
print('-- Freeze BN: ', cfg.freeze_bn)
print('-- Decay rate: ', cfg.decay_rate)
print('-- minScale: ', cfg.minScale)
print('-- maxScale: ', cfg.maxScale)
print('-- random scale: ', cfg.random_scale)
print('-- random mirror: ', cfg.random_mirror)
print('-- random crop: ', cfg.random_crop_pad)
print('-- Validation on :' + str(cfg.val_data_list))
print('-- Pre-trained: ' + cfg.pre_trained_model)
print('----------------End---------------------')
fcfg = open(cfg.save_dir + 'cfg.txt', 'w')
fcfg.write('-- batch_size: ' + str(cfg.batch_size) + '\n')
fcfg.write('-- Gradient Accumulation: ' + str(cfg.Gradient_Accumulation) +
'\n')
fcfg.write('-- image height: ' + str(cfg.IMAGE_HEIGHT) + '\n')
fcfg.write('-- image width: ' + str(cfg.IMAGE_WIDTH) + '\n')
fcfg.write('-- learning rate: ' + str(cfg.learning_rate) + '\n')
fcfg.write('-- GPU: ' + str(cfg.use_gpu) + '\n')
fcfg.write('-- optimizer: ' + str(cfg.optimizer) + '\n')
fcfg.write('-- class num: ' + str(cfg.NUM_OF_CLASSESS) + '\n')
fcfg.write('-- total iter: ' + str(cfg.total_iter) + '\n')
fcfg.write('-- Time acc: ' + str(cfg.is_time_acc) + '\n')
fcfg.write('-- Acc interval: ' + str(cfg.acc_interval) + '\n')
fcfg.write('-- Start Acc iter: ' + str(cfg.start_show_iter) + '\n')
fcfg.write('-- Is save step: ' + str(cfg.is_save_step) + '\n')
fcfg.write('-- Start save step: ' + str(cfg.start_save_step) + '\n')
fcfg.write('-- save ecpoch: ' + str(cfg.save_step_inter) + '\n')
fcfg.write('-- model save num: ' + str(cfg.model_save_num) + '\n')
fcfg.write('-- summary interval: ' + str(cfg.summary_interval) + '\n')
fcfg.write('-- weight decay: ' + str(cfg.weight_decay) + '\n')
fcfg.write('-- Freeze BN: ' + str(cfg.freeze_bn) + '\n')
fcfg.write('-- Decay rate: ' + str(cfg.decay_rate) + '\n')
fcfg.write('-- minScale: ' + str(cfg.minScale) + '\n')
fcfg.write('-- maxScale: ' + str(cfg.maxScale) + '\n')
fcfg.write('-- random scale: ' + str(cfg.random_scale) + '\n')
fcfg.write('-- random mirror: ' + str(cfg.random_mirror) + '\n')
fcfg.write('-- random crop: ' + str(cfg.random_crop_pad) + '\n')
fcfg.write('-- Validation on :' + str(cfg.val_data_list) + '\n')
fcfg.write('-- Pre-trained: ' + cfg.pre_trained_model + '\n')
fcfg.close()
last_summary_time = time.time()
last_acc_time = time.time()
record = train_number / cfg.batch_size # iter number of each epoch
if cfg.is_save_step: # save with step
running_count = count
epo = int(count / record)
if cfg.is_save_epoch: # save with epoch
running_count = int(epo * record)
epo = count
best_acc = 0.5
best_step = 0
train_start_time = time.time()
start_step = running_count
lossTr_list = []
stepes = []
Acc_val_list = []
# Change the graph for read only
sess.graph.finalize()
while running_count < cfg.total_iter:
time_start = time.time()
itr = 0
while itr < int(record):
itr += 1
running_count += 1
# log last 10 model
if running_count > (cfg.total_iter -
10) and cfg.is_save_last10_model:
saver.save(sess, cfg.save_dir + 'model.ckpt',
int(running_count))
print('Model has been saved:' + str(running_count))
# more than total iter, stopping training
if running_count > cfg.total_iter:
break
feed_dict = {step_ph: (running_count)}
# save summary
now = time.time()
if now - last_summary_time > cfg.summary_interval:
summary_str = sess.run(summary_op,
feed_dict={step_ph: running_count})
train_writer.add_summary(summary_str, running_count)
last_summary_time = now
score_map, img, gt = sess.run([_mask, _img, _gt],
feed_dict=feed_dict)
img = np.array(img + cfg.IMG_MEAN, np.uint8)
score_map = score_map * 20
gt = gt * 20
save_temp = np.zeros(
(cfg.IMAGE_HEIGHT, cfg.IMAGE_WIDTH * 3, 3), np.uint8)
save_temp[0:cfg.IMAGE_HEIGHT, 0:cfg.IMAGE_WIDTH, :] = img
save_temp[0:cfg.IMAGE_HEIGHT,
cfg.IMAGE_WIDTH:cfg.IMAGE_WIDTH * 2, :] = gt
save_temp[0:cfg.IMAGE_HEIGHT, cfg.IMAGE_WIDTH *
2:cfg.IMAGE_WIDTH * 3, :] = score_map
cv2.imwrite(
cfg.save_dir + 'temp_img/' + str(now) + '_mask.jpg',
save_temp)
time_s = time.time()
# Run the zero_ops to initialize it
sess.run(zero_ops)
# Accumulate the gradients 'n_minibatches' times in accum_vars using accum_ops
for i in range(cfg.Gradient_Accumulation):
sess.run(accum_ops, feed_dict=feed_dict)
train_loss, ls_ce, ls_l2, lr = sess.run(
[loss, ce_loss, l2_losses, learning_rate], feed_dict=feed_dict)
if running_count > 50:
lossTr_list.append(ls_ce)
if start_step == 0:
start_step = 50
# Run the train_step ops to update the weights based on your accumulated gradients
sess.run(train_step, feed_dict=feed_dict)
time_e = time.time()
print(
"Epo: %d, Step: %d, Train_loss:%g, ce: %g, l2:%g, lr:%g, time:%g"
% (epo, running_count, train_loss, ls_ce, ls_l2, lr,
time_e - time_s))
# check accuracy per step of training data
if cfg.is_time_acc and running_count >= cfg.start_show_iter and \
running_count <= cfg.total_iter and (now-last_acc_time) > cfg.acc_interval:
# Test accuracy in val
hist = np.zeros((cfg.NUM_OF_CLASSESS, cfg.NUM_OF_CLASSESS))
for i, img_name in enumerate(val_img_list):
true_val = np.expand_dims(misc.imread(val_label_list[i]),
axis=2)
pred_val = evaluate_accuracy(val_logits_softmax, sess,
val_image_batch, img_name)
hist += fast_hist(true_val.flatten(), pred_val.flatten(),
cfg.NUM_OF_CLASSESS)
hist[0, :] = 0
# overall accuracy
over_acc = np.diag(hist).sum() / hist.sum()
print('>>> Step', running_count, 'overall accuracy', over_acc)
if over_acc > best_acc:
saver.save(sess, cfg.save_dir + 'best.ckpt')
best_acc = over_acc
best_step = running_count
fshow = open(
cfg.save_dir + 'acc: ' + str(best_acc) + ', step: ' +
str(best_step), 'w')
print('>>> best acc: ', best_acc, 'best step: ', best_step)
# per-class accuracy
acc = np.diag(hist) / hist.sum(0)
print('>>> Step', running_count, 'mean accuracy', acc)
last_acc_time = now
stepes.append(running_count)
Acc_val_list.append(over_acc)
# draw plots for visualization ----------------------------
# Plot the figures per 60s
import matplotlib.pyplot as plt
fig1, ax1 = plt.subplots(figsize=(11, 8))
ax1.plot(range(start_step, running_count), lossTr_list)
ax1.set_title("Average training loss vs steps")
ax1.set_xlabel("Steps")
ax1.set_ylabel("Current loss")
plt.savefig(cfg.save_dir + "loss_vs_steps.png")
plt.clf()
fig2, ax2 = plt.subplots(figsize=(11, 8))
ax2.plot(stepes, Acc_val_list, label="Val total acc.")
ax2.set_title(" Acc vs steps")
ax2.set_xlabel("Steps")
ax2.set_ylabel("Current Acc")
plt.legend(loc='lower right')
plt.savefig(cfg.save_dir + "acc_vs_steps.png")
plt.close('all')
# ----------------------------------------------------------
# Save step model
if cfg.is_save_step and (running_count % cfg.save_step_inter) == 0 \
and running_count >= cfg.start_save_step:
saver.save(sess, cfg.save_dir + 'model.ckpt',
int(running_count))
print('Model has been saved:' + str(running_count))
files = os.path.join(cfg.save_dir +
'model.ckpt-*.data-00000-of-00001')
sfile = glob.glob(files)
if len(sfile) > cfg.model_save_num:
steps = []
for s in sfile:
part = s.split('.')
re = int(part[1].split('-')[1])
steps.append(re)
re = min(steps)
model = cfg.save_dir + 'model.ckpt-' + str(re)
os.remove(model + '.data-00000-of-00001')
os.remove(model + '.index')
os.remove(model + '.meta')
print('Remove Model:' + model)
# Check accuracy per Epoch of training data
if cfg.is_epoch_acc and running_count >= cfg.start_show_iter \
and running_count <= cfg.total_iter:
# Test accuracy in val
hist = np.zeros((cfg.NUM_OF_CLASSESS, cfg.NUM_OF_CLASSESS))
for i, img_name in enumerate(val_img_list):
true_val = np.expand_dims(misc.imread(val_label_list[i]),
axis=2)
pred_val = evaluate_accuracy(val_logits_softmax, sess,
val_image_batch, img_name)
hist += fast_hist(pred_val.flatten(), true_val.flatten(),
cfg.NUM_OF_CLASSESS)
hist[:, 0] = 0
# overall accuracy
over_acc = np.diag(hist).sum() / hist.sum()
print('>>> Step', running_count, 'overall accuracy', over_acc)
if over_acc > best_acc:
saver.save(sess, cfg.save_dir + 'best.ckpt')
best_acc = over_acc
best_step = running_count
fshow = open(
cfg.save_dir + 'acc: ' + str(best_acc) + ', step: ' +
str(best_step), 'w')
print('>>> best acc: ', best_acc, 'best step: ', best_step)
# per-class accuracy
acc = np.diag(hist) / hist.sum(0)
print('>>> Step', running_count, 'mean accuracy', acc)
epo += 1
# Save epoch model
if cfg.is_save_epoch and (epo % cfg.save_epoch_inter
) == 0 and epo >= cfg.start_save_epoch:
saver.save(sess, cfg.save_dir + 'model.ckpt', epo)
print('Model has been saved:' + str(epo))
files = os.path.join(cfg.save_dir +
'model.ckpt-*.data-00000-of-00001')
sfile = glob.glob(files)
if len(sfile) > cfg.model_save_num:
steps = []
for s in sfile:
part = s.split('.')
re = int(part[1].split('-')[1])
steps.append(re)
re = min(steps)
model = cfg.save_dir + 'model.ckpt-' + str(re)
os.remove(model + '.data-00000-of-00001')
os.remove(model + '.index')
os.remove(model + '.meta')
print('Remove Model:' + model)
time_end = time.time()
print('Epo ' + str(epo) + ' use time: ' + str(time_end - time_start))
# saver.save(sess, cfg.save_dir + 'last.ckpt') # save last model
train_end_time = time.time()
print('Train total use: ' +
str((train_end_time - train_start_time) / 3600) + ' h')
coord.request_stop()
coord.join(threads)
def main():
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
coord = tf.train.Coordinator()
with tf.name_scope("create_inputs"):
reader = ImageReader(DATA_DIR, DATA_LIST_PATH, input_size,
args.random_scale, args.random_mirror,
args.ignore_label, IMG_MEAN, coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
net = ICNet_BN({'data': image_batch},
is_training=True,
num_classes=args.num_classes,
filter_scale=args.filter_scale)
sub4_out = net.layers['sub4_out']
sub24_out = net.layers['sub24_out']
sub124_out = net.layers['conv6_cls']
restore_var = tf.global_variables()
all_trainable = [
v for v in tf.trainable_variables()
if ('beta' not in v.name and 'gamma' not in v.name)
or args.train_beta_gamma
]
with tf.name_scope('loss'):
loss_sub4 = create_loss(sub4_out, label_batch, args.num_classes,
args.ignore_label)
loss_sub24 = create_loss(sub24_out, label_batch, args.num_classes,
args.ignore_label)
loss_sub124 = create_loss(sub124_out, label_batch, args.num_classes,
args.ignore_label)
l2_losses = [
args.weight_decay * tf.nn.l2_loss(v)
for v in tf.trainable_variables() if 'weights' in v.name
]
reduced_loss = LAMBDA1 * loss_sub4 + LAMBDA2 * loss_sub24 + LAMBDA3 * loss_sub124 + tf.add_n(
l2_losses)
tf.summary.scalar('sub4', loss_sub4)
tf.summary.scalar('sub24', loss_sub24)
tf.summary.scalar('sub124', loss_sub124)
tf.summary.scalar('total_loss', reduced_loss)
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(
base_lr, tf.pow((1 - step_ph / args.num_steps), args.power))
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
if args.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
grads = tf.gradients(reduced_loss, all_trainable)
train_op = opt_conv.apply_gradients(zip(grads, all_trainable))
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=20)
summ = tf.summary.merge_all()
tenboard_dir = tfboard_dir + str(LEARNING_RATE) + '_' + str(NUM_STEPS)
writer = tf.summary.FileWriter(tenboard_dir)
writer.add_graph(sess.graph)
ckpt = tf.train.get_checkpoint_state(args.snapshot_dir)
# net.load(args.restore_from, sess)
if ckpt and ckpt.model_checkpoint_path:
loader = tf.train.Saver(var_list=restore_var)
load_step = int(
os.path.basename(ckpt.model_checkpoint_path).split('-')[1])
load(loader, sess,
'./snapshots/3wDataSet/model.ckpt-' + str(START_STEP))
else:
print('Restore from pre-trained model...')
net.load(args.restore_from, sess)
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# Iterate over training steps.
for step in range(START_STEP, args.num_steps):
start_time = time.time()
feed_dict = {step_ph: step}
if step % args.save_pred_every == 0:
s, loss_value, loss1, loss2, loss3, _ = sess.run(
[
summ, reduced_loss, loss_sub4, loss_sub24, loss_sub124,
train_op
],
feed_dict=feed_dict)
save(saver, sess, args.snapshot_dir, step)
writer.add_summary(s, step)
else:
s, loss_value, loss1, loss2, loss3, _ = sess.run(
[
summ, reduced_loss, loss_sub4, loss_sub24, loss_sub124,
train_op
],
feed_dict=feed_dict)
writer.add_summary(s, step)
duration = time.time() - start_time
print(
'step {:d} \t total loss = {:.3f}, sub4 = {:.3f}, sub24 = {:.3f}, sub124 = {:.3f} ({:.3f} sec/step)'
.format(step, loss_value, loss1, loss2, loss3, duration))
coord.request_stop()
coord.join(threads)
def main():
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
coord = tf.train.Coordinator()
with tf.name_scope("create_inputs"):
reader = ImageReader(
' ',
args.data_list,
input_size,
args.random_scale,
args.random_mirror,
args.ignore_label,
IMG_MEAN,
coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
net = ICNet_BN({'data': image_batch}, is_training=True, num_classes=args.num_classes)
sub4_out = net.layers['sub4_out']
sub24_out = net.layers['sub24_out']
sub124_out = net.layers['conv6_cls']
restore_var = tf.global_variables()
all_trainable = [v for v in tf.trainable_variables() if ('beta' not in v.name and 'gamma' not in v.name) or args.train_beta_gamma]
loss_sub4 = create_loss(sub4_out, label_batch, args.num_classes, args.ignore_label)
loss_sub24 = create_loss(sub24_out, label_batch, args.num_classes, args.ignore_label)
loss_sub124 = create_loss(sub124_out, label_batch, args.num_classes, args.ignore_label)
l2_losses = [args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables() if 'weights' in v.name]
reduced_loss = LAMBDA1 * loss_sub4 + LAMBDA2 * loss_sub24 + LAMBDA3 * loss_sub124 + tf.add_n(l2_losses)
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(base_lr, tf.pow((1 - step_ph / args.num_steps), args.power))
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
if args.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
grads = tf.gradients(reduced_loss, all_trainable)
train_op = opt_conv.apply_gradients(zip(grads, all_trainable))
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=5)
ckpt = tf.train.get_checkpoint_state(args.snapshot_dir)
if ckpt and ckpt.model_checkpoint_path:
loader = tf.train.Saver(var_list=restore_var)
load_step = int(os.path.basename(ckpt.model_checkpoint_path).split('-')[1])
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('Restore from pre-trained model...')
net.load(args.restore_from, sess)
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# Iterate over training steps.
for step in range(args.num_steps):
start_time = time.time()
feed_dict = {step_ph: step}
if step % args.save_pred_every == 0:
loss_value, loss1, loss2, loss3, _ = sess.run([reduced_loss, loss_sub4, loss_sub24, loss_sub124, train_op], feed_dict=feed_dict)
save(saver, sess, args.snapshot_dir, step)
else:
loss_value, loss1, loss2, loss3, _ = sess.run([reduced_loss, loss_sub4, loss_sub24, loss_sub124, train_op], feed_dict=feed_dict)
duration = time.time() - start_time
print('step {:d} \t total loss = {:.3f}, sub4 = {:.3f}, sub24 = {:.3f}, sub124 = {:.3f} ({:.3f} sec/step)'.format(step, loss_value, loss1, loss2, loss3, duration))
coord.request_stop()
coord.join(threads)
def main():
"""Create the model and start the training."""
args = get_arguments()
h, w = map(int, args.input_size.split(','))
input_size = (h, w)
tf.set_random_seed(args.random_seed)
coord = tf.train.Coordinator()
with tf.name_scope("create_inputs"):
reader = ImageReader(args.data_dir, args.data_list, input_size,
args.random_scale, args.random_mirror,
args.ignore_label, IMG_MEAN, coord)
image_batch, label_batch = reader.dequeue(args.batch_size)
net = PSPNet101({'data': image_batch},
is_training=True,
num_classes=args.num_classes)
raw_output = net.layers['conv6']
# According from the prototxt in Caffe implement, learning rate must multiply by 10.0 in pyramid module
fc_list = [
'conv5_3_pool1_conv', 'conv5_3_pool2_conv', 'conv5_3_pool3_conv',
'conv5_3_pool6_conv', 'conv6', 'conv5_4'
]
restore_var = [v for v in tf.global_variables()]
all_trainable = [
v for v in tf.trainable_variables()
if ('beta' not in v.name and 'gamma' not in v.name)
or args.train_beta_gamma
]
fc_trainable = [
v for v in all_trainable if v.name.split('/')[0] in fc_list
]
conv_trainable = [
v for v in all_trainable if v.name.split('/')[0] not in fc_list
] # lr * 1.0
fc_w_trainable = [v for v in fc_trainable
if 'weights' in v.name] # lr * 10.0
fc_b_trainable = [v for v in fc_trainable
if 'biases' in v.name] # lr * 20.0
assert (len(all_trainable) == len(fc_trainable) + len(conv_trainable))
assert (len(fc_trainable) == len(fc_w_trainable) + len(fc_b_trainable))
# Predictions: ignoring all predictions with labels greater or equal than n_classes
raw_prediction = tf.reshape(raw_output, [-1, args.num_classes])
label_proc = prepare_label(label_batch,
tf.stack(raw_output.get_shape()[1:3]),
num_classes=args.num_classes,
one_hot=False) # [batch_size, h, w]
raw_gt = tf.reshape(label_proc, [
-1,
])
indices = tf.squeeze(tf.where(tf.less_equal(raw_gt, args.num_classes - 1)),
1)
gt = tf.cast(tf.gather(raw_gt, indices), tf.int32)
prediction = tf.gather(raw_prediction, indices)
# Pixel-wise softmax loss.
loss = tf.nn.sparse_softmax_cross_entropy_with_logits(logits=prediction,
labels=gt)
l2_losses = [
args.weight_decay * tf.nn.l2_loss(v) for v in tf.trainable_variables()
if 'weights' in v.name
]
reduced_loss = tf.reduce_mean(loss) + tf.add_n(l2_losses)
# Using Poly learning rate policy
base_lr = tf.constant(args.learning_rate)
step_ph = tf.placeholder(dtype=tf.float32, shape=())
learning_rate = tf.scalar_mul(
base_lr, tf.pow((1 - step_ph / args.num_steps), args.power))
# Gets moving_mean and moving_variance update operations from tf.GraphKeys.UPDATE_OPS
if args.update_mean_var == False:
update_ops = None
else:
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
with tf.control_dependencies(update_ops):
opt_conv = tf.train.MomentumOptimizer(learning_rate, args.momentum)
opt_fc_w = tf.train.MomentumOptimizer(learning_rate * 10.0,
args.momentum)
opt_fc_b = tf.train.MomentumOptimizer(learning_rate * 20.0,
args.momentum)
grads = tf.gradients(reduced_loss,
conv_trainable + fc_w_trainable + fc_b_trainable)
grads_conv = grads[:len(conv_trainable)]
grads_fc_w = grads[len(conv_trainable):(len(conv_trainable) +
len(fc_w_trainable))]
grads_fc_b = grads[(len(conv_trainable) + len(fc_w_trainable)):]
train_op_conv = opt_conv.apply_gradients(
zip(grads_conv, conv_trainable))
train_op_fc_w = opt_fc_w.apply_gradients(
zip(grads_fc_w, fc_w_trainable))
train_op_fc_b = opt_fc_b.apply_gradients(
zip(grads_fc_b, fc_b_trainable))
train_op = tf.group(train_op_conv, train_op_fc_w, train_op_fc_b)
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
sess = tf.Session(config=config)
init = tf.global_variables_initializer()
sess.run(init)
# Saver for storing checkpoints of the model.
saver = tf.train.Saver(var_list=tf.global_variables(), max_to_keep=10)
ckpt = tf.train.get_checkpoint_state(SNAPSHOT_DIR)
if ckpt and ckpt.model_checkpoint_path:
loader = tf.train.Saver(var_list=restore_var)
load_step = int(
os.path.basename(ckpt.model_checkpoint_path).split('-')[1])
load(loader, sess, ckpt.model_checkpoint_path)
else:
print('No checkpoint file found.')
load_step = 0
# Start queue threads.
threads = tf.train.start_queue_runners(coord=coord, sess=sess)
# Iterate over training steps.
for step in range(args.num_steps):
start_time = time.time()
feed_dict = {step_ph: step}
if step % args.save_pred_every == 0:
loss_value, _ = sess.run([reduced_loss, train_op],
feed_dict=feed_dict)
save(saver, sess, args.snapshot_dir, step)
else:
loss_value, _ = sess.run([reduced_loss, train_op],
feed_dict=feed_dict)
duration = time.time() - start_time
print('step {:d} \t loss = {:.3f}, ({:.3f} sec/step)'.format(
step, loss_value, duration))
coord.request_stop()
coord.join(threads)
class Evaluator():
def __init__(self):
self.stop = False
if not tf.gfile.Exists(FLAGS.test_load_queue_path):
self.settings = {
"best_acc": None,
"best_checkpoint": None,
"last_checkpoint": None,
"acc_increasing": None,
"last_accs": deque()
}
else:
self.settings = np.load(FLAGS.test_load_queue_path)[()]
self.setup()
def setup(self):
self.recreate_directory_structure()
self.coord = tf.train.Coordinator()
# Load reader.
with tf.name_scope("create_inputs"):
self.reader = ImageReader("./val.npy", True, self.coord)
self.image_batch, self.label_list_batch = self.reader.dequeue(
FLAGS.batch_size)
global_step = tf.Variable(0,
dtype=tf.int32,
name='global_step',
trainable=False)
self.net = CatznDogs({'data': self.image_batch}, global_step)
# Set up tf session and initialize variables.
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
self.sess = tf.Session(config=config)
# Start queue threads.
self.threads = tf.train.start_queue_runners(coord=self.coord,
sess=self.sess)
self.ckpt = tf.train.get_checkpoint_state(FLAGS.checkpoint_dir)
def run(self):
while not self.stop:
all_models_paths = self.ckpt.all_model_checkpoint_paths
index_current_model = list(all_models_paths).index(
self.ckpt.model_checkpoint_path)
if self.settings["last_checkpoint"]:
index_last_evaluated_model = list(all_models_paths).index(
self.settings["last_checkpoint"])
else:
index_last_evaluated_model = -1
if index_current_model != index_last_evaluated_model:
index_model_under_evaluation = index_last_evaluated_model + 1
self.settings["last_checkpoint"] = all_models_paths[
index_model_under_evaluation]
print("Evaluator started evaluating")
acc_pred = self.net.test(
self.image_batch,
self.label_list_batch,
self.coord,
self.sess,
self.reader.nb_samples,
checkpoint_iteration=index_model_under_evaluation)
self.settings["last_accs"].append(acc_pred)
if not self.settings[
"best_acc"] or acc_pred < self.settings["best_acc"]:
self.settings["best_acc"] = acc_pred
self.settings["best_checkpoint"] = self.settings[
"last_checkpoint"]
self.settings["acc_increasing"] = 0
else:
self.settings["acc_increasing"] += 1
if self.settings["acc_increasing"] >= 5:
self.stop = 1
np.save(FLAGS.test_load_queue_path, self.settings)
print("Best model is {} with best Acc {}".format(
self.settings["best_checkpoint"],
self.settings["best_acc"]))
else:
time.sleep(10)
self.coord.request_stop()
self.coord.join(self.threads)
print("Best model is {} with best Acc {}".format(
self.settings["best_checkpoint"], self.settings["best_acc"]))
def recreate_directory_structure(self):
if not tf.gfile.Exists(FLAGS.test_summaries_dir):
tf.gfile.MakeDirs(FLAGS.test_summaries_dir)
else:
tf.gfile.DeleteRecursively(FLAGS.test_summaries_dir)
tf.gfile.MakeDirs(FLAGS.test_summaries_dir)
