def train(iterations=80000, summary_interval=100, batch=32):
tf.logging.set_verbosity(tf.logging.INFO)
placeholders = create_placeholders()
global_step, network_a, network_b = get_network(*placeholders[-4:], placeholders[5])
with Session(True, True, global_step) as sess:
with Driver() as driver:
try:
last_save = timer()
array = []
buffer = score_buffer()
step = 0
time = 1
for _ in range(iterations):
if len(array) < batch*10:
get_input(driver, sess.session, network_a, network_b, placeholders, buffer, array)
pre = timer()
_, aloss, step = sess.session.run([network_a.trainer, network_a.loss, global_step], feed_dict=get_batch_feed(array, placeholders, batch, batch//2))
_, bloss = sess.session.run([network_b.trainer, network_b.loss], feed_dict=get_batch_feed(array, placeholders, batch, batch//2))
time = 0.9*time + 0.11 *(timer()-pre)
if step%10 == 0:
print("Training step: %i, Loss A: %.3f, Loss B: %.3f (%.2f s) "%(step, aloss, bloss, time), end='\r')
if step%summary_interval == 0:
sess.save_summary(step, get_batch_feed(array, placeholders, batch, batch//2))
print()
if timer() - last_save > 1800:
sess.save_network()
last_save = timer()
except (KeyboardInterrupt, StopIteration):
print("\nStopping the training")
def test_fun(dataset, opts):
test_arg_list = []
for test_rot in [None]:
for test_flip in [None]:
test_arg_list.append((test_rot, test_flip))
for test_arg in test_arg_list:
#for test_arg in [(None, None)]:
opts.test_arg = test_arg
# dataset and iterator
dataset_val = dataset.get_dataset(opts)
iterator = dataset_val.make_one_shot_iterator()
volume, joint_coord, shape, data_num = iterator.get_next()
inputs = tf.placeholder(
tf.float32,
shape=[None, None, None, None, 1 + opts.temporal * opts.nJoint])
dn_p = 0
# network
outputs, _ = get_network(inputs, opts)
# save and load
saver = tf.train.Saver(var_list=tf.get_collection(
tf.GraphKeys.GLOBAL_VARIABLES, scope=opts.network))
start = time.time()
with tf.Session() as sess:
sess.run(tf.global_variables_initializer())
print('restore trained model')
saver.restore(
sess,
os.path.join(opts.output_path, opts.name,
'model%d.ckpt' % opts.epochs))
print('test start')
res = []
while True:
try:
v, joint, s, dn = sess.run(
[volume, joint_coord, shape, data_num])
if opts.temporal:
if np.squeeze(dn) != dn_p:
output_val = first_heatmap_p(joint, s, opts)
dn_p = np.squeeze(dn)
else:
output_val = get_heatmap_p(output_val, opts)
output_val = sess.run(outputs[-1],
feed_dict={
inputs:
np.concatenate(
[v, output_val], axis=-1)
})
else:
output_val = sess.run(outputs[-1],
feed_dict={inputs: v})
res.append(test_result(output_val, joint, s, dn, opts))
except tf.errors.OutOfRangeError:
break
save_test_result(res, opts)
reset_dict()
tf.reset_default_graph()
print("test end, elapsed time: ", time.time() - start)
def test_values(opts):
# Get data and network
dataset = data_util.datasets.get_dataset(opts)
network = model.get_network(opts, opts.arch)
# Sample and network output
# sample = dataset.load_batch('test', repeat=1)
# output_graph = network(sample)
# output_sim = get_test_output_sim(opts, output_graph)
# losses = get_tf_test_losses(opts, sample, output_sim)
# tf_evals = [ losses, output_sim, sample['true_match'] ]
sample, placeholders = dataset.get_placeholders()
output_graph = network(sample)
output_sim = get_test_output_sim(opts, output_graph)
tf_evals = [ output_sim, sample['true_match'] ]
# Tensorflow and logging operations
disp_string = \
'{idx:06d}: {{' \
'time: {time:.03e}, ' \
'l1: {l1:.03e}, ' \
'l2: {l2:.03e}, ' \
'ssame: {{ m: {ssame_m:.03e}, std: {ssame_std:.03e} }}, ' \
'sdiff: {{ m: {sdiff_m:.03e}, std: {sdiff_std:.03e} }}, ' \
'roc: {roc:.03e}, ' \
'p_r: {p_r:.03e}, ' \
'}}' # End of lines
# Build session
glob_str = os.path.join(opts.dataset_params.data_dir, 'np_test', '*npz')
npz_files = sorted(glob.glob(glob_str))
# vars_restore = [ v for v in tf.get_collection('weights') ] + \
# [ v for v in tf.get_collection('biases') ]
vars_restore = tf.get_collection(tf.GraphKeys.TRAINABLE_VARIABLES)
# print(vars_restore)
saver = tf.train.Saver(vars_restore)
with open(os.path.join(opts.save_dir, 'test_output.log'), 'a') as log_file:
with build_test_session(opts) as sess:
best_loss_ckpt = os.path.join(os.path.abspath(opts.save_dir), 'best-loss-model')
if os.path.exists(best_loss_ckpt + '.meta'):
saver.restore(sess, best_loss_ckpt)
else:
saver.restore(sess, tf.train.latest_checkpoint(opts.save_dir))
# for i in range(opts.dataset_params.sizes['test']):
for i, npz_file in enumerate(npz_files):
start_time = time.time()
with open(npz_file, 'rb') as f:
npz_ld = dict(np.load(f))
feed_dict = dataset.get_feed_dict(placeholders, npz_ld)
stime = time.time()
output_sim_, matches_ = sess.run(tf_evals, feed_dict=feed_dict)
etime = time.time()
values_ = {'idx' : i, 'time': etime - stime }
values_.update(get_np_losses(opts, output_sim_, matches_[0]))
dstr = disp_string.format(**values_)
end_time = time.time()
print(dstr + ' ({:.03f})'.format(end_time - start_time))
# print(dstr)
log_file.write(dstr)
log_file.write('\n')
def train(opts):
"""Train the network
Input: opts (options) - object with all relevant options stored
Output: None
Saves all output in opts.save_dir, given by the user. For how to modify the
training procedure, look at options.py
"""
# Get data and network
dataset = data_util.datasets.get_dataset(opts)
network = model.get_network(opts, opts.arch)
# Training
with tf.device('/cpu:0'):
if opts.load_data:
sample = dataset.load_batch('train')
else:
sample = dataset.gen_batch('train')
output = network(sample['Laplacian'], sample['InitEmbeddings'])
loss = get_loss(opts, sample, output, name='train')
train_op = get_train_op(opts, loss)
# Testing
test_data = get_test_dict(opts, dataset, network)
# Tensorflow and logging operations
step = 0
train_steps, train_time, test_freq_steps, test_freq = get_intervals(opts)
trainstr = "global step {}: loss = {} ({:.04} sec/step, time {:.04})"
tf.logging.set_verbosity(tf.logging.INFO)
# Build session
with build_session(opts) as sess:
# Train loop
for run in range(opts.num_runs):
stime = time.time()
ctime = stime
ttime = stime
# Main loop
while step != train_steps and ctime - stime <= train_time:
start_time = time.time()
_, loss_ = sess.run([ train_op, loss ])
ctime = time.time()
# Check for logging
if (step % opts.log_steps) == 0:
log(trainstr.format(step,
loss_,
ctime - start_time,
ctime - stime))
# Check if time to evaluate test
if ((test_freq_steps and step % test_freq_steps == 0) or \
(ctime - ttime > test_freq)):
raw_sess = sess.raw_session()
run_test(opts, raw_sess, test_data)
ttime = time.time()
step += 1
def test_fun(opts):
v = read_nifti('../rawdata/022618/022618_000.nii.gz')
joint_coord = sio.loadmat(
'../rawdata/022618/022618.mat')['joint_coord'].reshape(
(-1, 15, 3)).transpose((0, 2, 1))
lc, rc = 2, 3
x_l, y_l, z_l = joint_coord[0, 0, lc] - 1, joint_coord[
0, 1, lc] - 1, joint_coord[0, 2, lc] - 1
x_r, y_r, z_r = joint_coord[0, 0, rc] - 1, joint_coord[
0, 1, rc] - 1, joint_coord[0, 2, rc] - 1
xv, yv, zv = np.meshgrid(np.arange(v.shape[1]), np.arange(v.shape[0]),
np.arange(v.shape[2]))
val_mask_l = np.floor((xv - x_l)**2 + (yv - y_l)**2 +
(zv - z_l)**2) <= 3**2
val_mask_r = np.floor((xv - x_r)**2 + (yv - y_r)**2 +
(zv - z_r)**2) <= 3**2
inputs = tf.placeholder(tf.float32, shape=[None, None, None, None, 1])
outputs, _ = get_network(inputs, opts)
saver = tf.train.Saver(var_list=tf.get_collection(
tf.GraphKeys.GLOBAL_VARIABLES, scope=opts.network))
with tf.Session() as sess:
sess.run(tf.global_variables_initializer())
saver.restore(
sess,
os.path.join(opts.output_path, opts.name,
'model%d.ckpt' % opts.epochs))
for r in range(1, 50):
mask_l = np.floor((xv - x_l)**2 + (yv - y_l)**2 +
(zv - z_l)**2) <= r**2
mask_r = np.floor((xv - x_r)**2 + (yv - y_r)**2 +
(zv - z_r)**2) <= r**2
output_val = sess.run(outputs[-1],
feed_dict={
inputs:
np.expand_dims(
np.expand_dims(v * mask_r, 0), -1)
})
output_val = np.squeeze(output_val)
print(r, np.max(output_val[:, :, :, lc] * val_mask_r),
np.max(output_val[:, :, :, rc] * val_mask_r))
print(
np.sqrt(
sum((joint_coord[0, :, :] -
np.reshape(np.array([x_r + 1, y_r + 1, z_r + 1]), (3, 1)))**2,
0)))
def test_values(opts):
"""Run testing on the network
Input: opts (options) - object with all relevant options stored
Output: None
Saves all output in opts.save_dir, given by the user. It loads the saved
configuration from the options.yaml file in opts.save_dir, so only the
opts.save_dir needs to be specified. Will test and save out all test values
in the test set into test_output.log in opts.save_dir
"""
# Get data and network
dataset = data_util.datasets.get_dataset(opts)
network = model.get_network(opts, opts.arch)
# Sample
sample = dataset.get_placeholders()
print(sample)
output = network(sample['Laplacian'], sample['InitEmbeddings'])
losses = get_test_losses(opts, sample, output)
# Tensorflow and logging operations
disp_string = '{:06d} Errors: ' \
'L1: {:.03e}, L2: {:.03e}, BCE: {:.03e}, ' \
'Same sim: {:.03e} +/- {:.03e}, ' \
'Diff sim: {:.03e} +/- {:.03e}, ' \
'Time: {:.03e}, '
# Build session
glob_str = os.path.join(opts.dataset_params.data_dir, 'np_test', '*npz')
npz_files = sorted(glob.glob(glob_str))
vars_restore = [ v for v in tf.get_collection('weights') ] + \
[ v for v in tf.get_collection('biases') ]
print(vars_restore)
saver = tf.train.Saver(vars_restore)
with open(os.path.join(opts.save_dir, 'test_output.log'), 'a') as log_file:
with build_test_session(opts) as sess:
saver.restore(sess, tf.train.latest_checkpoint(opts.save_dir))
for i, npz_file in enumerate(npz_files):
sample_ = {
k: np.expand_dims(v, 0)
for k, v in np.load(npz_file).items()
}
start_time = time.time()
vals = sess.run(losses,
{sample[k]: sample_[k]
for k in sample.keys()})
end_time = time.time()
dstr = disp_string.format(i, *vals, end_time - start_time)
print(dstr)
log_file.write(dstr)
log_file.write('\n')
def load_model(name,epoch,shape,network_type,ctx):
data_sign = ['left','right','left_downsample','right_downsample','label','LinearRegression_label','gt']
net,args,aux = mx.model.load_checkpoint(name,epoch)
keys = net.list_arguments()
net = get_network(network_type)
executor = net.simple_bind(ctx=ctx,grad_req='add',left = shape,right= shape)
for key in executor.arg_dict:
if key in data_sign:
executor.arg_dict[key][:] = mx.nd.zeros((executor.arg_dict[key].shape),ctx)
else:
if key in args:
executor.arg_dict[key][:] = args[key]
else:
init(key,executor.arg_dict[key])
return net,executor
def learn(image,
variables,
example,
score,
iterations=10000,
summary_interval=100):
"""
Learn to drive from examples
"""
try:
global_step, network_a, network_b = get_network(
image, variables, example, score, True)
with Session(True, True, global_step) as sess:
last_save = timer()
step = 1
time = 1
while step < iterations:
pre = timer()
_, aloss, step = sess.session.run(
[network_a.trainer, network_a.loss, global_step])
_, bloss = sess.session.run(
[network_b.trainer, network_b.loss])
if step % summary_interval == 0:
sess.save_summary(step)
print()
time = 0.9 * time + 0.1 * (timer() - pre)
if step % 10 == 0:
print(
"Training step: %i, Loss A: %.3f, Loss B: %.3f (%.2f s) "
% (step, aloss, bloss, time),
end='\r')
if timer() - last_save > 1800:
sess.save_network()
last_save = timer()
aloss_tot = 0
bloss_tot = 0
for i in range(10):
aloss, bloss = sess.session.run(
[network_a.loss, network_b.loss])
aloss_tot += aloss
bloss_tot += bloss
print("\nFinal loss A: %.3f, Final loss B: %.3f" %
(aloss_tot / 10, bloss_tot / 10))
except (KeyboardInterrupt, StopIteration):
pass
finally:
print("\nStopping the training")
def train(opts):
# Get data and network
dataset = data_util.datasets.get_dataset(opts)
network = model.get_network(opts, opts.arch)
# Training
with tf.device('/cpu:0'):
if opts.load_data:
sample = dataset.load_batch('train')
else:
sample = dataset.gen_batch('train')
output = network(sample['Laplacian'], sample['InitEmbeddings'])
loss = get_loss(opts, sample, output, name='train')
train_op = get_train_op(opts, loss)
# Testing
test_data = get_test_dict(opts, dataset, network)
# Tensorflow and logging operations
step = 0
train_steps, train_time, test_freq_steps, test_freq = get_intervals(opts)
trainstr = "global step {}: loss = {} ({:.04} sec/step, time {:.04})"
tf.logging.set_verbosity(tf.logging.INFO)
# Build session
with build_session(opts) as sess:
# Train loop
for run in range(opts.num_runs):
stime = time.time()
ctime = stime
ttime = stime
while step != train_steps and ctime - stime <= train_time:
start_time = time.time()
_, loss_ = sess.run([ train_op, loss ])
ctime = time.time()
if (step % opts.log_steps) == 0:
log(trainstr.format(step,
loss_,
ctime - start_time,
ctime - stime))
if ((test_freq_steps and step % test_freq_steps == 0) or \
(ctime - ttime > test_freq)):
raw_sess = sess.raw_session()
run_test(opts, raw_sess, test_data)
ttime = time.time()
step += 1
def drive():
"""
Drive a car, alternating between the networks
"""
tf.logging.set_verbosity(tf.logging.INFO)
imgs = tf.placeholder(tf.float32, [None, IMAGE_WIDTH*IMAGE_HEIGHT*IMAGE_DEPTH])
vars = tf.placeholder(tf.float32, [None, VARIABLE_COUNT])
_, neta, netb = get_network(tf.reshape(imgs, [-1, IMAGE_WIDTH, IMAGE_HEIGHT, IMAGE_DEPTH]), vars, training=False)
with Session(False, False) as sess:
with Driver() as driver:
def inout(h, v):
print("Driving | h: %+.2f v: %+.2f"%(h,v), end='\r')
x, v, y, s = driver.drive(h, v)
return { imgs: [x], vars: [v] }
try:
h = 0
v = 1
while True:
h, v, _ = sess.session.run(neta.output, feed_dict=inout(h, v))[0]
h, v, _ = sess.session.run(netb.output, feed_dict=inout(h, v))[0]
except (KeyboardInterrupt, StopIteration):
pass
def train(self):
dataset = data_util.datasets.get_dataset(opts)
with tf.device('/cpu:0'):
sample = dataset.load_batch('train')
test_sample = dataset.load_batch('test')
# Build network
network = model.get_network(opts, self.arch)
# Get training output
out_graph = network(sample)
output_sim = self.get_output_sim(out_graph)
loss = self.get_loss(sample, output_sim, test_mode=False, name='train')
train_op = self.get_train_op(loss)
# Get test output
self.build_test(test_sample, network)
# Start training
trainstr = "local step {}: loss = {} ({:.04} sec/step, time {:.04})"
step = 0
tf.logging.set_verbosity(tf.logging.INFO)
with self.build_session() as sess:
raw_sess = sess.raw_session()
stime = time.time()
ctime = stime
ttime = stime
# while step != train_steps and ctime - stime <= train_time:
while self.keep_training(step, ctime - stime):
step_time = time.time()
_, loss_ = sess.run([train_op, loss])
ctime = time.time()
if (step % opts.log_steps) == 0:
self.log(
trainstr.format(step, loss_, ctime - step_time,
ctime - stime))
if self.test_now(step, ctime - ttime):
self.run_test(raw_sess, step)
ttime = time.time()
step += 1
parser.add_argument('--lr',action='store',dest='lr',type=float)
parser.add_argument('--l',action='store',dest='low',type=int)
parser.add_argument('--h',action='store',dest='high',type=int)
cmd = parser.parse_args()
#cmd.con 不是指epoch，是指第几个轮，200个batch 为1轮 。 kitty dataset 跑一次epoch 需要3 小时
lr = cmd.lr
batch_size = 10000
s1 = (batch_size,3,13,13)
s2 = (batch_size,3,7,7)
ctx = mx.gpu(3)
data_sign = ['left','right','left_downsample','right_downsample','label','LinearRegression_label','gt']
if cmd.con == -1:
#重新训练
net = get_network('not fully')
executor = net.simple_bind(ctx=ctx,grad_req='add',left = s1,right= s1)
keys = net.list_arguments()
grads = dict(zip(net.list_arguments(),executor.grad_arrays))
args = dict(zip(keys,executor.arg_arrays))
auxs = dict(zip(keys,executor.arg_arrays))
args['gt'] = mx.nd.zeros((batch_size,),ctx)
logging.info("complete network architecture design")
else:
#继续之前的训练
net,executor = load_model('stereo',cmd.con,s1,'not fully',ctx)
keys = net.list_arguments()
grads = dict(zip(keys,executor.grad_arrays))
args = dict(zip(keys,executor.arg_arrays))
auxs = dict(zip(keys,executor.arg_arrays))
parser = argparse.ArgumentParser()
parser.add_argument('--continue',action='store',dest='con',type=int)
parser.add_argument('--lr',action='store',dest='lr',type=float)
cmd = parser.parse_args()
#cmd.con 不是指epoch，是指第几个轮，200个batch 为1轮 。 kitty dataset 跑一次epoch 需要3 小时
lr = cmd.lr
batch_size = 1235
s1 = (batch_size,3,13,13)
s2 = (batch_size,3,7,7)
ctx = mx.gpu(3)
data_sign = ['left','right','left_downsample','right_downsample','label','LinearRegression_label','gt']
if cmd.con == -1:
#重新训练
net = get_network('fully')
executor = net.simple_bind(ctx=ctx,grad_req='add',left = s1,right= s1)
keys = net.list_arguments()
grads = dict(zip(net.list_arguments(),executor.grad_arrays))
args = dict(zip(keys,executor.arg_arrays))
auxs = dict(zip(keys,executor.arg_arrays))
args['gt'] = mx.nd.zeros((batch_size,),ctx)
logging.info("complete network architecture design")
else:
#继续之前的训练
net,executor = load_model('stereo',cmd.con,s1,'fully',ctx)
keys = net.list_arguments()
grads = dict(zip(keys,executor.grad_arrays))
args = dict(zip(keys,executor.arg_arrays))
auxs = dict(zip(keys,executor.arg_arrays))
weights_name = args.net_type + str(
args.depth) + "-" + str(epoch).zfill(5) + ".pth"
torch.save(state, os.path.join(args.model_dir,
weights_name))
time_elapsed = time.time() - since
print("Training completed in {:.0f} min {:.0f} sec".format(
time_elapsed // 60, time_elapsed % 60))
print("Best validation Acc {:.2f}%".format(best_acc * 100))
if __name__ == '__main__':
print("--Phase 0: arguments settings...")
args = set_args()
args.use_gpu = torch.cuda.is_available()
print("--Phase 1: Data prepration")
data_loader, num_class = prepare_dataset(args)
args.num_class = num_class
print("--Phase 2: Model setup")
model_ft, file_name = get_network(args)
model_ft = reset_classifier(model_ft, args)
if args.use_gpu:
model_ft.cuda(args.device_id)
import torch.backends.cudnn as cudnn
cudnn.benchmark = True
print("--Phase 3: Training Model")
train_model(model_ft, data_loader, args)
for _ in range(1000):
img, tag = dataloader.next()
intermediate = infer(branchyNet, 'client', ep, pp, qb, img)
result = infer(branchyNet, 'server', ep, pp, qb, intermediate)
prob = torch.exp(result).detach().numpy().tolist()[0]
pred = (prob.index(max(prob)), max(prob))
def get_latency(branchyNet, img):
start_time = time.time()
infer_main_branch(branchyNet, img)
end_time = time.time()
return end_time - start_time
if __name__ == "__main__":
branchyNet = get_network()
load_model(branchyNet)
branchyNet.testing()
dataloader = get_test_data()
img, tag = dataloader.next()
print(img.size())
latency = 0
for _ in range(10):
img, tag = dataloader.next()
latency += get_latency(branchyNet, img)
print(latency / 10)
def train_fun(dataset, opts):
# dataset and iterator
dataset_train, dataset_val = dataset.get_dataset(opts)
iterator = tf.data.Iterator.from_structure(dataset_train.output_types,
dataset_train.output_shapes)
if opts.train_like_test:
volume, label = iterator.get_next()
inputs = tf.placeholder(
tf.float32,
shape=[None, None, None, None, 1 + opts.temporal * opts.nJoint])
labels = tf.placeholder(tf.float32,
shape=[None, None, None, None, opts.nJoint])
else:
inputs, labels = iterator.get_next()
# network
outputs, training = get_network(inputs, opts)
# loss
loss, mean_update_ops = mse_loss(outputs, labels, opts)
# summary
writer_train = tf.summary.FileWriter(
os.path.join(opts.output_path, opts.name, 'logs', 'train'),
tf.get_default_graph())
writer_val = tf.summary.FileWriter(
os.path.join(opts.output_path, opts.name, 'logs', 'val'))
summary_op = tf.summary.merge_all()
# varlist
name_list = [
ns[0] for ns in tf.train.list_variables(
os.path.join(opts.output_path, opts.use_pretrain,
'pretrainmodel.ckpt'))
] if opts.use_pretrain != '' else []
pretrain_list = [
v for v in tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES,
scope=opts.network)
if v.name[:-2] in name_list
]
newtrain_list = [
v for v in tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES,
scope=opts.network)
if v.name[:-2] not in name_list
]
print('pretrain var: %d, newtrain var: %d' %
(len(pretrain_list), len(newtrain_list)))
# optimizer
optimizer = Optimizer(opts, pretrain_list, newtrain_list,
dataset_train.length)
train_op = optimizer.get_train_op(loss)
my_update_op = tf.group(mean_update_ops)
# save and load
saver = tf.train.Saver(var_list=newtrain_list + pretrain_list)
if opts.use_pretrain != '':
saver_pretrain = tf.train.Saver(var_list=pretrain_list)
# main loop
with tf.Session(config=tf.ConfigProto(log_device_placement=False,
allow_soft_placement=True)) as sess:
sess.run(tf.global_variables_initializer())
if opts.use_pretrain != '':
saver_pretrain.restore(
sess,
os.path.join(opts.output_path, opts.use_pretrain + 'pretrain',
'pretrainmodel.ckpt'))
if opts.epoch_continue > 0:
saver.restore(
sess,
os.path.join(opts.output_path, opts.use_continue,
'model%d.ckpt' % opts.epoch_continue))
print('training loop start')
start_train = time.time()
for epoch in range(opts.epoch_continue + 1, opts.epochs + 1):
print('epoch: %d' % epoch)
start_ep = time.time()
# train
print('training')
sess.run(iterator.make_initializer(dataset_train))
sess.run(tf.local_variables_initializer())
while True:
try:
if opts.train_like_test:
v, l = sess.run([volume, label])
if random.random() < opts.train_like_test:
l_p = sess.run(outputs[-1],
feed_dict={
training: False,
inputs: v
})
v = np.concatenate([v[:, :, :, :, :1], l_p],
axis=-1)
summary_train, _ = sess.run([summary_op, train_op],
feed_dict={
training: True,
inputs: v,
labels: l
})
else:
summary_train, _ = sess.run([summary_op, train_op],
feed_dict={training: True})
except tf.errors.OutOfRangeError:
writer_train.add_summary(summary_train, epoch)
break
print('step: %d' % optimizer.get_global_step(sess))
# validation
print('validation')
sess.run(iterator.make_initializer(dataset_val))
sess.run(tf.local_variables_initializer())
while True:
try:
if opts.train_like_test:
v, l = sess.run([volume, label])
if random.random() < opts.train_like_test:
l_p = sess.run(outputs[-1],
feed_dict={
training: False,
inputs: v
})
v = np.concatenate([v[:, :, :, :, :1], l_p],
axis=-1)
summary_val, _ = sess.run([summary_op, my_update_op],
feed_dict={
training: False,
inputs: v,
labels: l
})
else:
summary_val, _ = sess.run([summary_op, my_update_op],
feed_dict={training: False})
except tf.errors.OutOfRangeError:
writer_val.add_summary(summary_val, epoch)
break
# save model
if epoch % opts.save_freq == 0 or epoch == opts.epochs:
print('save model')
saver.save(
sess,
os.path.join(opts.output_path, opts.name,
'model%d.ckpt' % epoch))
print("epoch end, elapsed time: %ds, total time: %ds" %
(time.time() - start_ep, time.time() - start_train))
print('training loop end')
writer_train.close()
writer_val.close()
opts.run = 'test'
def test_fun2(opts):
inputs = tf.placeholder(tf.float32, shape=[None, None, None, None, 1])
outputs, _ = get_network(inputs, opts)
saver = tf.train.Saver(var_list=tf.get_collection(
tf.GraphKeys.GLOBAL_VARIABLES, scope=opts.network))
with tf.Session() as sess:
sess.run(tf.global_variables_initializer())
saver.restore(
sess,
os.path.join(opts.output_path, opts.name,
'model%d.ckpt' % opts.epochs))
for folder in [
os.path.join('../newdata', f)
for f in sorted(os.listdir('../newdata'))
]:
folder_basename = os.path.basename(folder)
print(folder_basename)
predict_filename = os.path.join('../predict',
folder_basename + '.mat')
niinames = [
os.path.join(folder, f) for f in sorted(os.listdir(folder))
if f.endswith('.nii.gz')
]
joint_coord = np.zeros((len(niinames), 3, 15))
confidence = np.zeros((len(niinames), 15))
for nf, nii in enumerate(niinames):
v = read_nifti(nii)
pad_width = [(int((ceil(s / 8.0) * 8 - s) / 2),
int(ceil((ceil(s / 8.0) * 8 - s) / 2)))
for s in v.shape]
v = np.pad(v, pad_width, 'reflect')
v = np.expand_dims(np.expand_dims(v, 0), -1)
output_val = sess.run(outputs[-1], feed_dict={inputs: v})
output_val = np.squeeze(output_val)
sss = output_val.shape
volume = output_val[pad_width[0][0]:sss[0] - pad_width[0][1],
pad_width[1][0]:sss[1] - pad_width[1][1],
pad_width[2][0]:sss[2] - pad_width[2][1]]
volume[volume < 0] = 0
s = volume[:, :, :, 0].shape
for i in range(joint_coord.shape[-1]):
#print(i, np.max(volume[:,:,:,i]))
ind = np.unravel_index(np.argmax(volume[:, :, :, i]), s)
confidence[nf, i] = volume[ind[0], ind[1], ind[2], i]
weights = 0
x_p = y_p = z_p = 0
r = 2
for x in range(ind[1] - r, ind[1] + r + 1):
for y in range(ind[0] - r, ind[0] + r + 1):
for z in range(ind[2] - r, ind[2] + r + 1):
if 0 <= x < s[1] and 0 <= y < s[
0] and 0 <= z < s[2]:
weights += volume[y, x, z, i]
x_p += x * volume[y, x, z, i]
y_p += y * volume[y, x, z, i]
z_p += z * volume[y, x, z, i]
if weights == 0:
print('weight zero')
joint_coord[nf, :, i] = 0
else:
joint_coord[nf, 0, i] = x_p / weights + 1
joint_coord[nf, 1, i] = y_p / weights + 1
joint_coord[nf, 2, i] = z_p / weights + 1
sio.savemat(predict_filename, {
'joint_coord': joint_coord,
'confidence': confidence
})
print('finish')
image_dir=args.SETTING['image_dir'],
label_dir=args.SETTING['label_dir'],
image_suffix=args.SETTING['image_suffix'],
label_suffix=args.SETTING['label_suffix'],
transform=False,
inference=False)
test_data = mx.gluon.data.DataLoader(sal_test,
batch_size=batch_size,
shuffle=False,
last_batch='keep',
num_workers=2)
if args.begin_epoch > 0:
net = get_network(args.NETWORK,
input_size=args.TRAIN['input_size'],
pretrained=False,
with_aspp=True)
net.collect_params().load(args.TRAIN['pretrained'],
allow_missing=False,
ignore_extra=False)
else:
# load network with pretrained vgg on bottom-up net
net = get_network(args.NETWORK,
input_size=args.TRAIN['input_size'],
pretrained=True,
with_aspp=True)
# init params of the rest layers
net.aspp.collect_params().initialize(init=mx.init.MSRAPrelu())
net.refinement1.collect_params().initialize(init=mx.init.MSRAPrelu())
net.refinement2.collect_params().initialize(init=mx.init.MSRAPrelu())
net.refinement3.collect_params().initialize(init=mx.init.MSRAPrelu())
label_dir=args.SETTING['label_dir'],
image_set_dir=args.SETTING['image_set_dir'],
image_suffix=args.SETTING['image_suffix'],
label_suffix=args.SETTING['label_suffix'],
transform=False,
inference=True)
test_loader = mx.gluon.data.DataLoader(test_dataset,
batch_size=batch_size,
shuffle=False,
last_batch='keep',
num_workers=1)
# load network architecture
net = get_network(args.NETWORK,
input_size=args.INFERENCE['input_size'],
pretrained=False,
with_aspp=True)
# load trained params
if args.test_type == 0:
trained_model = args.INFERENCE['region_model']
else:
trained_model = args.INFERENCE['contour_model']
net.collect_params().load(trained_model)
net.hybridize()
net.collect_params().reset_ctx(ctx)
predict(test_loader,
test_dataset.img_info,
net,
ctx,
result_path,
def pretrain(opts):
# dataset and iterator
dataset = Dataset(opts.rawdata_path)
dataset_train = dataset.get_dataset(opts)
iterator = tf.data.Iterator.from_structure(dataset_train.output_types,
dataset_train.output_shapes)
v_a, v_b, label = iterator.get_next()
# network
outputs, training = get_network(tf.concat((v_a, v_b), axis=0), opts)
# save and load
saver = tf.train.Saver(var_list=tf.get_collection(
tf.GraphKeys.GLOBAL_VARIABLES, scope=opts.network))
# loss
loss, accuracy = cross_entropy_loss(outputs, label, opts)
# summary
writer_train = tf.summary.FileWriter(
os.path.join(opts.output_path, opts.time, 'logs'),
tf.get_default_graph())
summary_op = tf.summary.merge_all()
# optimizer
global_step = tf.Variable(0, trainable=False)
lr = tf.train.exponential_decay(opts.lr,
global_step,
dataset_train.length * 67,
0.1,
staircase=True)
train_op = tf.train.AdamOptimizer(learning_rate=lr).minimize(
loss, global_step=global_step, colocate_gradients_with_ops=True)
update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS)
train_op = tf.group(update_ops + [train_op])
# main loop
with tf.Session(config=tf.ConfigProto(log_device_placement=False,
allow_soft_placement=True)) as sess:
sess.run(tf.global_variables_initializer())
print('training loop start')
start_train = time.clock()
for epoch in range(1, opts.epochs + 1):
print('epoch: %d' % epoch)
start_ep = time.clock()
# train
print('training')
sess.run(iterator.make_initializer(dataset_train))
while True:
try:
summary_train, _ = sess.run([summary_op, train_op],
feed_dict={training: True})
writer_train.add_summary(
summary_train, tf.train.global_step(sess, global_step))
except tf.errors.OutOfRangeError:
break
print('step: %d' % tf.train.global_step(sess, global_step))
# save model
if epoch % opts.save_freq == 0 or epoch == opts.epochs:
print('save model')
saver.save(
sess,
os.path.join(opts.output_path, opts.time,
'pretrainmodel.ckpt'))
print("epoch end, elapsed time: %ds, total time: %ds" %
(time.clock() - start_train, time.clock() - start_ep))
print('training loop end')
writer_train.close()
