def visual_results(self, dataset_type="TEST", images_index=3):
image_w = self.config["INPUT_WIDTH"]
image_h = self.config["INPUT_HEIGHT"]
image_c = self.config["INPUT_CHANNELS"]
with self.sess as sess:
# Restore saved session
saver = tf.train.Saver()
saver.restore(self.sess,
os.path.join(self.saved_dir, 'model.ckpt-19'))
_, _, prediction = cal_loss(logits=self.logits,
labels=self.labels_pl)
if (dataset_type == 'TRAIN'):
test_type_path = self.config["TRAIN_FILE"]
if type(images_index) == list:
indexes = images_index
else:
indexes = random.sample(range(367), images_index)
elif (dataset_type == 'VAL'):
test_type_path = self.config["VAL_FILE"]
if type(images_index) == list:
indexes = images_index
else:
indexes = random.sample(range(101), images_index)
elif (dataset_type == 'TEST'):
test_type_path = self.config["TEST_FILE"]
if type(images_index) == list:
indexes = images_index
else:
indexes = random.sample(range(233), images_index)
# Load images
image_filename, label_filename = get_filename_list(
test_type_path, self.config)
images, labels = get_all_test_data(image_filename, label_filename)
# Keep images subset of length images_index
images = [images[i] for i in indexes]
labels = [labels[i] for i in indexes]
pred_tot = []
for image_batch, label_batch in zip(images, labels):
image_batch = np.reshape(image_batch,
[1, image_h, image_w, image_c])
label_batch = np.reshape(label_batch, [1, image_h, image_w, 1])
fetches = [prediction]
feed_dict = {
self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.batch_size_pl: 1
}
pred = sess.run(fetches=fetches, feed_dict=feed_dict)
pred = np.reshape(pred, [image_h, image_w])
pred_tot.append(pred)
draw_plots(images, labels, pred_tot)
def train(self, max_steps=30000, batch_size=3):
image_filename, label_filename = get_filename_list(
self.train_file, self.config)
val_image_filename, val_label_filename = get_filename_list(
self.val_file, self.config)
with self.graph.as_default():
if self.images_tr is None:
self.images_tr, self.labels_tr = dataset_inputs(
image_filename, label_filename, batch_size, self.config)
self.images_val, self.labels_val = dataset_inputs(
val_image_filename, val_label_filename, batch_size,
self.config)
loss, accuracy, prediction = cal_loss(logits=self.logits,
labels=self.labels_pl)
# , number_class=self.num_classes)
train, global_step = train_op(total_loss=loss, opt=self.opt)
summary_op = tf.summary.merge_all()
with self.sess.as_default():
self.sess.run(tf.local_variables_initializer())
self.sess.run(tf.global_variables_initializer())
coord = tf.train.Coordinator()
threads = tf.train.start_queue_runners(coord=coord)
train_writer = tf.summary.FileWriter(self.tb_logs,
self.sess.graph)
self.saver = tf.train.Saver()
for step in range(max_steps):
image_batch, label_batch = self.sess.run(
[self.images_tr, self.labels_tr])
feed_dict = {
self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.batch_size_pl: batch_size
}
_, _loss, _accuracy, summary = self.sess.run(
[train, loss, accuracy, summary_op],
feed_dict=feed_dict)
self.train_loss.append(_loss)
self.train_accuracy.append(_accuracy)
print(
"Iteration {}: Train Loss{:6.3f}, Train Accu {:6.3f}".
format(step, self.train_loss[-1],
self.train_accuracy[-1]))
if step % 100 == 0:
train_writer.add_summary(summary, step)
if step % 1000 == 0:
print("start validating..")
_val_loss = []
_val_acc = []
for test_step in range(9):
image_batch_val, label_batch_val = self.sess.run(
[self.images_val, self.labels_val])
feed_dict_valid = {
self.inputs_pl: image_batch_val,
self.labels_pl: label_batch_val,
self.batch_size_pl: batch_size
}
# since we still using mini-batch, so in the batch norm we set phase_train to be
# true, and because we didin't run the trainop process, so it will not update
# the weight!
_loss, _acc, _val_pred = self.sess.run(
[loss, accuracy, self.logits], feed_dict_valid)
_val_loss.append(_loss)
_val_acc.append(_acc)
self.val_loss.append(np.mean(_val_loss))
self.val_acc.append(np.mean(_val_acc))
print("Val Loss {:6.3f}, Val Acc {:6.3f}".format(
self.val_loss[-1], self.val_acc[-1]))
self.saver.save(self.sess,
os.path.join(self.saved_dir,
'model.ckpt'),
global_step=self.model_version)
self.model_version = self.model_version + 1
coord.request_stop()
coord.join(threads)
def visual_results_external_image(self, images, FLAG_MAX_VOTE = False):
#train_dir = "./saved_models/segnet_vgg_bayes/segnet_vgg_bayes_30000/model.ckpt-30000"
#train_dir = "./saved_models/segnet_scratch/segnet_scratch_30000/model.ckpt-30000"
i_width = 64
i_height =64
images = [misc.imresize(image, (i_height, i_width)) for image in images]
image_w = self.config["INPUT_WIDTH"]
image_h = self.config["INPUT_HEIGHT"]
image_c = self.config["INPUT_CHANNELS"]
train_dir = self.config["SAVE_MODEL_DIR"]
FLAG_BAYES = self.config["BAYES"]
with self.sess as sess:
# Restore saved session
saver = tf.train.Saver()
saver.restore(sess, train_dir)
_, _, prediction = cal_loss(logits=self.logits,
labels=self.labels_pl)
prob = tf.nn.softmax(self.logits,dim = -1)
num_sample_generate = 30
pred_tot = []
var_tot = []
labels = []
for i in range(len(images)):
labels.append(np.array([[1 for x in range(64)] for y in range(64)]))
inference_time = []
start_time = time.time()
for image_batch, label_batch in zip(images,labels):
#for image_batch in zip(images):
image_batch = np.reshape(image_batch,[1,image_h,image_w,image_c])
label_batch = np.reshape(label_batch,[1,image_h,image_w,1])
if FLAG_BAYES is False:
fetches = [prediction]
feed_dict = {self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: False,
self.keep_prob_pl: 0.5,
self.batch_size_pl: 1}
pred = sess.run(fetches = fetches, feed_dict = feed_dict)
pred = np.reshape(pred,[image_h,image_w])
var_one = []
else:
feed_dict = {self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: False,
self.keep_prob_pl: 0.5,
self.with_dropout_pl: True,
self.batch_size_pl: 1}
prob_iter_tot = []
pred_iter_tot = []
for iter_step in range(num_sample_generate):
prob_iter_step = sess.run(fetches = [prob], feed_dict = feed_dict)
prob_iter_tot.append(prob_iter_step)
pred_iter_tot.append(np.reshape(np.argmax(prob_iter_step,axis = -1),[-1]))
if FLAG_MAX_VOTE is True:
prob_variance,pred = MAX_VOTE(pred_iter_tot,prob_iter_tot,self.config["NUM_CLASSES"])
#acc_per = np.mean(np.equal(pred,np.reshape(label_batch,[-1])))
var_one = var_calculate(pred,prob_variance)
pred = np.reshape(pred,[image_h,image_w])
else:
prob_mean = np.nanmean(prob_iter_tot,axis = 0)
prob_variance = np.var(prob_iter_tot, axis = 0)
pred = np.reshape(np.argmax(prob_mean,axis = -1),[-1]) #pred is the predicted label with the mean of generated samples
#THIS TIME I DIDN'T INCLUDE TAU
var_one = var_calculate(pred,prob_variance)
pred = np.reshape(pred,[image_h,image_w])
pred_tot.append(pred)
var_tot.append(var_one)
inference_time.append(time.time() - start_time)
start_time = time.time()
try:
draw_plots_bayes_external(images, pred_tot, var_tot)
return pred_tot, var_tot, inference_time
except:
return pred_tot, var_tot, inference_time
def visual_results(self, dataset_type = "TEST", images_index = 3, FLAG_MAX_VOTE = False):
image_w = self.config["INPUT_WIDTH"]
image_h = self.config["INPUT_HEIGHT"]
image_c = self.config["INPUT_CHANNELS"]
train_dir = self.config["SAVE_MODEL_DIR"]
FLAG_BAYES = self.config["BAYES"]
print(FLAG_BAYES)
with self.sess as sess:
# Restore saved session
saver = tf.train.Saver()
saver.restore(sess, train_dir)
_, _, prediction = cal_loss(logits=self.logits,
labels=self.labels_pl,number_class=self.num_classes)
prob = tf.nn.softmax(self.logits,dim = -1)
if (dataset_type=='TRAIN'):
test_type_path = self.config["TRAIN_FILE"]
if type(images_index) == list:
indexes = images_index
else:
'''CHANGE IT BACK'''
#indexes = random.sample(range(367),images_index)
indexes = random.sample(range(6),images_index)
#indexes = [0,75,150,225,300]
elif (dataset_type=='VAL'):
test_type_path = self.config["VAL_FILE"]
if type(images_index) == list:
indexes = images_index
else:
#indexes = random.sample(range(101),images_index)
indexes = random.sample(range(10),images_index)
#indexes = [0,25,50,75,100]
elif (dataset_type=='TEST'):
test_type_path = self.config["TEST_FILE"]
if type(images_index) == list:
indexes = images_index
else:
indexes = random.sample(range(5),images_index)
#indexes = random.sample(range(233),images_index)
#indexes = [0,50,100,150,200]
# Load images
image_filename,label_filename = get_filename_list(test_type_path, self.config)
images, labels = get_all_test_data(image_filename,label_filename)
# Keep images subset of length images_index
images = [images[i] for i in indexes]
labels = [labels[i] for i in indexes]
num_sample_generate = 30
pred_tot = []
var_tot = []
print(image_c)
for image_batch, label_batch in zip(images,labels):
print(image_batch.shape)
image_batch = np.reshape(image_batch,[1,image_h,image_w,image_c])
label_batch = np.reshape(label_batch,[1,image_h,image_w,1])
if FLAG_BAYES is False:
print("NON BAYES")
fetches = [prediction]
feed_dict = {self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: False,
self.keep_prob_pl: 0.5,
self.batch_size_pl: 1}
pred = sess.run(fetches = fetches, feed_dict = feed_dict)
pred = np.reshape(pred,[image_h,image_w])
var_one = []
else:
feed_dict = {self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: False,
self.keep_prob_pl: 0.5,
self.with_dropout_pl: True,
self.batch_size_pl: 1}
prob_iter_tot = []
pred_iter_tot = []
for iter_step in range(num_sample_generate):
prob_iter_step = sess.run(fetches = [prob], feed_dict = feed_dict)
prob_iter_tot.append(prob_iter_step)
pred_iter_tot.append(np.reshape(np.argmax(prob_iter_step,axis = -1),[-1]))
if FLAG_MAX_VOTE is True:
prob_variance,pred = MAX_VOTE(pred_iter_tot,prob_iter_tot,self.config["NUM_CLASSES"])
#acc_per = np.mean(np.equal(pred,np.reshape(label_batch,[-1])))
var_one = var_calculate(pred,prob_variance)
pred = np.reshape(pred,[image_h,image_w])
else:
prob_mean = np.nanmean(prob_iter_tot,axis = 0)
prob_variance = np.var(prob_iter_tot, axis = 0)
pred = np.reshape(np.argmax(prob_mean,axis = -1),[-1]) #pred is the predicted label with the mean of generated samples
#THIS TIME I DIDN'T INCLUDE TAU
var_one = var_calculate(pred,prob_variance)
pred = np.reshape(pred,[image_h,image_w])
pred_tot.append(pred)
var_tot.append(var_one)
draw_plots_bayes(images, labels, pred_tot, var_tot)
return (images,labels,pred_tot,var_tot)
def train(self, max_steps=30001, batch_size=3):
# For train the bayes, the FLAG_OPT SHOULD BE SGD, BUT FOR TRAIN THE NORMAL SEGNET,
# THE FLAG_OPT SHOULD BE ADAM!!!
image_filename, label_filename = get_filename_list(self.train_file, self.config)
val_image_filename, val_label_filename = get_filename_list(self.val_file, self.config)
with self.graph.as_default():
if self.images_tr is None:
self.images_tr, self.labels_tr = dataset_inputs(image_filename, label_filename, batch_size, self.config)
self.images_val, self.labels_val = dataset_inputs(val_image_filename, val_label_filename, batch_size,
self.config)
loss, accuracy, prediction = cal_loss(logits=self.logits, labels=self.labels_pl,
number_class=self.num_classes)
train, global_step = train_op(total_loss=loss, opt=self.opt)
summary_op = tf.summary.merge_all()
with self.sess.as_default():
self.sess.run(tf.local_variables_initializer())
self.sess.run(tf.global_variables_initializer())
coord = tf.train.Coordinator()
threads = tf.train.start_queue_runners(coord=coord)
# The queue runners basic reference:
# https://www.tensorflow.org/versions/r0.12/how_tos/threading_and_queues
train_writer = tf.summary.FileWriter(self.tb_logs, self.sess.graph)
for step in range(max_steps):
print("OK")
image_batch, label_batch = self.sess.run([self.images_tr, self.labels_tr])
feed_dict = {self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: True,
self.keep_prob_pl: 0.5,
self.with_dropout_pl: True,
self.batch_size_pl: batch_size}
_, _loss, _accuracy, summary = self.sess.run([train, loss, accuracy, summary_op],
feed_dict=feed_dict)
self.train_loss.append(_loss)
self.train_accuracy.append(_accuracy)
print("Iteration {}: Train Loss{:6.3f}, Train Accu {:6.3f}".format(step, self.train_loss[-1],
self.train_accuracy[-1]))
if step % 100 == 0:
conv_classifier = self.sess.run(self.logits, feed_dict=feed_dict)
print('per_class accuracy by logits in training time',
per_class_acc(conv_classifier, label_batch, self.num_classes))
# per_class_acc is a function from utils
train_writer.add_summary(summary, step)
if step % 1000 == 0:
print("start validating.......")
_val_loss = []
_val_acc = []
hist = np.zeros((self.num_classes, self.num_classes))
for test_step in range(int(20)):
fetches_valid = [loss, accuracy, self.logits]
image_batch_val, label_batch_val = self.sess.run([self.images_val, self.labels_val])
feed_dict_valid = {self.inputs_pl: image_batch_val,
self.labels_pl: label_batch_val,
self.is_training_pl: True,
self.keep_prob_pl: 1.0,
self.with_dropout_pl: False,
self.batch_size_pl: batch_size}
# since we still using mini-batch, so in the batch norm we set phase_train to be
# true, and because we didin't run the trainop process, so it will not update
# the weight!
_loss, _acc, _val_pred = self.sess.run(fetches_valid, feed_dict_valid)
_val_loss.append(_loss)
_val_acc.append(_acc)
hist += get_hist(_val_pred, label_batch_val)
print_hist_summary(hist)
self.val_loss.append(np.mean(_val_loss))
self.val_acc.append(np.mean(_val_acc))
print(
"Iteration {}: Train Loss {:6.3f}, Train Acc {:6.3f}, Val Loss {:6.3f}, Val Acc {:6.3f}".format(
step, self.train_loss[-1], self.train_accuracy[-1], self.val_loss[-1],
self.val_acc[-1]))
coord.request_stop()
coord.join(threads)
def visual_results(self,
dataset_type="TEST",
images_index=3,
FLAG_MAX_VOTE=False):
image_w = self.config["INPUT_WIDTH"]
image_h = self.config["INPUT_HEIGHT"]
image_c = self.config["INPUT_CHANNELS"]
train_dir = self.config["SAVE_MODEL_DIR"]
FLAG_BAYES = self.config["BAYES"]
with self.sess as sess:
# Restore saved session
saver = tf.train.Saver()
saver.restore(sess, train_dir)
kernel = variable_with_weight_decay('weights',
initializer=initialization(
1, 64),
shape=[1, 1, 64, 3],
wd=False)
conv = tf.nn.conv2d(self.deconv1_3,
kernel, [1, 1, 1, 1],
padding='SAME')
biases = variable_with_weight_decay('biases',
tf.constant_initializer(0.0),
shape=[3],
wd=False)
logits = tf.nn.bias_add(conv, biases, name="scope.name")
#exit()
sess.run(tf.global_variables_initializer())
#sess.run(logits)
_, _, prediction = cal_loss(logits=logits, labels=self.labels_pl)
prob = tf.nn.softmax(logits, dim=-1)
print(
"==================================================================================="
)
print(prediction)
#exit()
if (dataset_type == 'TRAIN'):
test_type_path = self.config["TRAIN_FILE"]
if type(images_index) == list:
indexes = images_index
else:
indexes = random.sample(range(367), images_index)
#indexes = [0,75,150,225,300]
elif (dataset_type == 'VAL'):
test_type_path = self.config["VAL_FILE"]
if type(images_index) == list:
indexes = images_index
else:
indexes = random.sample(range(101), images_index)
#indexes = [0,25,50,75,100]
elif (dataset_type == 'TEST'):
test_type_path = self.config["TEST_FILE"]
if type(images_index) == list:
indexes = images_index
else:
indexes = random.sample(range(233), images_index)
#indexes = [0,50,100,150,200]
# Load images
image_filename, label_filename = get_filename_list(
test_type_path, self.config)
images, labels = get_all_test_data(image_filename, label_filename)
# Keep images subset of length images_index
images = [images[i] for i in indexes]
labels = [labels[i] for i in indexes]
num_sample_generate = 30
pred_tot = []
var_tot = []
for image_batch, label_batch in zip(images, labels):
image_batch = np.reshape(image_batch,
[1, image_h, image_w, image_c])
label_batch = np.reshape(label_batch, [1, image_h, image_w, 1])
if FLAG_BAYES is False:
fetches = [prediction]
feed_dict = {
self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: False,
self.keep_prob_pl: 0.5,
self.batch_size_pl: 1
}
pred = sess.run(fetches=fetches, feed_dict=feed_dict)
pred = np.reshape(pred, [image_h, image_w])
var_one = []
else:
feed_dict = {
self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: False,
self.keep_prob_pl: 0.5,
self.with_dropout_pl: True,
self.batch_size_pl: 1
}
prob_iter_tot = []
pred_iter_tot = []
for iter_step in range(num_sample_generate):
prob_iter_step = sess.run(fetches=[prob],
feed_dict=feed_dict)
prob_iter_tot.append(prob_iter_step)
pred_iter_tot.append(
np.reshape(np.argmax(prob_iter_step, axis=-1),
[-1]))
if FLAG_MAX_VOTE is True:
prob_variance, pred = MAX_VOTE(
pred_iter_tot, prob_iter_tot,
self.config["NUM_CLASSES"])
#acc_per = np.mean(np.equal(pred,np.reshape(label_batch,[-1])))
var_one = var_calculate(pred, prob_variance)
pred = np.reshape(pred, [image_h, image_w])
else:
prob_mean = np.nanmean(prob_iter_tot, axis=0)
prob_variance = np.var(prob_iter_tot, axis=0)
pred = np.reshape(
np.argmax(prob_mean, axis=-1), [-1]
) #pred is the predicted label with the mean of generated samples
#THIS TIME I DIDN'T INCLUDE TAU
var_one = var_calculate(pred, prob_variance)
pred = np.reshape(pred, [image_h, image_w])
pred_tot.append(pred)
var_tot.append(var_one)
draw_plots_bayes(images, labels, pred_tot, var_tot)
def visual_results_external_image(self, images, model_file):
images = [
misc.imresize(image, (self.input_h, self.input_w))
for image in images
]
with tf.Session() as sess:
# Restore saved session
saver = tf.train.Saver()
if model_file is None:
saver.restore(sess,
tf.train.latest_checkpoint(FLAGS.runtime_dir))
else:
saver.restore(sess, os.path.join(FLAGS.runtime_dir,
model_file))
_, _, prediction = cal_loss(logits=self.logits,
labels=self.labels_pl,
n_classes=self.n_classes)
prob = tf.nn.softmax(self.logits, dim=-1)
pred_tot = []
var_tot = []
labels = []
for i in range(len(images)):
labels.append(
np.array([[1 for x in range(self.input_w)]
for y in range(self.input_h)]))
inference_time = []
start_time = time.time()
for image_batch, label_batch in zip(images, labels):
image_batch = np.reshape(
image_batch, [1, self.input_h, self.input_w, self.input_c])
label_batch = np.reshape(label_batch,
[1, self.input_h, self.input_w, 1])
fetches = [prediction]
feed_dict = {
self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: False,
self.keep_prob_pl: 0.5,
self.batch_size_pl: 1
}
pred = sess.run(fetches=fetches, feed_dict=feed_dict)
pred = np.reshape(pred, [self.input_h, self.input_w])
pred_tot.append(pred)
inference_time.append(time.time() - start_time)
start_time = time.time()
try:
draw_plots_bayes_external(images, pred_tot)
return pred_tot, var_tot, inference_time
except:
return pred_tot, var_tot, inference_time
def visual_results(self,
dataset_type="TEST",
indices=None,
n_samples=3,
model_file=None):
with tf.Session() as sess:
# Restore saved session
saver = tf.train.Saver()
if model_file is None:
saver.restore(sess,
tf.train.latest_checkpoint(FLAGS.runtime_dir))
else:
saver.restore(sess, os.path.join(FLAGS.runtime_dir,
model_file))
_, _, prediction = cal_loss(logits=self.logits,
labels=self.labels_pl,
n_classes=self.n_classes)
test_type_path = None
if dataset_type == 'TRAIN':
test_type_path = self.train_file
elif dataset_type == 'VAL':
test_type_path = self.val_file
elif dataset_type == 'TEST':
test_type_path = self.test_file
# Load images
image_filenames, label_filenames = get_filename_list(
test_type_path)
images, labels = get_all_test_data(image_filenames,
label_filenames)
if not indices:
indices = random.sample(range(len(images)), n_samples)
# Keep images subset of length images_index
images = [images[i] for i in indices]
labels = [labels[i] for i in indices]
pred_tot = []
for image_batch, label_batch in zip(images, labels):
image_batch = np.reshape(
image_batch, [1, self.input_h, self.input_w, self.input_c])
label_batch = np.reshape(label_batch,
[1, self.input_h, self.input_w, 1])
fetches = [prediction]
feed_dict = {
self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: False,
self.keep_prob_pl: 0.5,
self.batch_size_pl: 1
}
pred = sess.run(fetches=fetches, feed_dict=feed_dict)
pred = np.reshape(pred, [self.input_h, self.input_w])
pred_tot.append(pred)
draw_plots_bayes(images, labels, pred_tot)
def train(self):
image_filename, label_filename = get_filename_list(self.train_file)
val_image_filename, val_label_filename = get_filename_list(
self.val_file)
if self.images_tr is None:
self.images_tr, self.labels_tr = dataset_inputs(
image_filename, label_filename, FLAGS.batch_size, self.input_w,
self.input_h, self.input_c)
self.images_val, self.labels_val = dataset_inputs(
val_image_filename, val_label_filename, FLAGS.batch_size,
self.input_w, self.input_h, self.input_c)
loss, accuracy, predictions = cal_loss(logits=self.logits,
labels=self.labels_pl,
n_classes=self.n_classes)
train, global_step = train_op(loss, FLAGS.learning_rate)
tf.summary.scalar("global_step", global_step)
tf.summary.scalar("total loss", loss)
# Calculate total number of trainable parameters
total_parameters = 0
for variable in tf.trainable_variables():
shape = variable.get_shape()
variable_parameters = 1
for dim in shape:
variable_parameters *= dim.value
total_parameters += variable_parameters
print('Total Trainable Parameters: ', total_parameters)
with tf.train.SingularMonitoredSession(
# save/load model state
checkpoint_dir=FLAGS.runtime_dir,
hooks=[
tf.train.StopAtStepHook(last_step=FLAGS.n_epochs),
tf.train.CheckpointSaverHook(
checkpoint_dir=FLAGS.runtime_dir,
save_steps=FLAGS.checkpoint_frequency,
saver=tf.train.Saver()),
tf.train.SummarySaverHook(
save_steps=FLAGS.summary_frequency,
output_dir=FLAGS.runtime_dir,
scaffold=tf.train.Scaffold(
summary_op=tf.summary.merge_all()),
)
],
config=tf.ConfigProto(log_device_placement=True)) as mon_sess:
coord = tf.train.Coordinator()
threads = tf.train.start_queue_runners(coord=coord, sess=mon_sess)
while not mon_sess.should_stop():
image_batch, label_batch = mon_sess.raw_session().run(
[self.images_tr, self.labels_tr])
feed_dict = {
self.inputs_pl: image_batch,
self.labels_pl: label_batch,
self.is_training_pl: True,
self.keep_prob_pl: 0.5,
self.with_dropout_pl: True,
self.batch_size_pl: FLAGS.batch_size
}
step, _, training_loss, training_acc = mon_sess.run(
[global_step, train, loss, accuracy], feed_dict=feed_dict)
print("Iteration {}: Train Loss{:9.6f}, Train Accu {:9.6f}".
format(step, training_loss, training_acc))
# Check against validation set
if step % FLAGS.validate_frequency == 0:
sampled_losses = []
sampled_accuracies = []
hist = np.zeros((self.n_classes, self.n_classes))
for test_step in range(int(20)):
fetches_valid = [loss, accuracy, self.logits]
image_batch_val, label_batch_val = mon_sess.raw_session(
).run([self.images_val, self.labels_val])
feed_dict_valid = {
self.inputs_pl: image_batch_val,
self.labels_pl: label_batch_val,
self.is_training_pl: True,
self.keep_prob_pl: 1.0,
self.with_dropout_pl: False,
self.batch_size_pl: FLAGS.batch_size
}
validate_loss, validate_acc, predictions = mon_sess.raw_session(
).run(fetches_valid, feed_dict_valid)
sampled_losses.append(validate_loss)
sampled_accuracies.append(validate_acc)
hist += get_hist(predictions, label_batch_val)
print_hist_summary(hist)
# Average loss and accuracy over n samples from validation set
avg_loss = np.mean(sampled_losses)
avg_acc = np.mean(sampled_accuracies)
print(
"Iteration {}: Avg Val Loss {:9.6f}, Avg Val Acc {:9.6f}"
.format(step, avg_loss, avg_acc))
coord.request_stop()
coord.join(threads)
