def _build_model(inputs_queue, clone_batch_size):
"""Builds a clone of train model.
Args:
inputs_queue: A prefetch queue for images and labels.
Returns:
A dictionary of logits names to logits.
"""
samples = inputs_queue.dequeue()
batch_size = clone_batch_size * FLAGS.num_classes
inputs = tf.identity(samples['image'], name='image')
labels = tf.identity(samples['label'], name='label')
model_options = common.ModelOptions(output_stride=FLAGS.output_stride)
net, end_points = model.get_features(
inputs,
model_options=model_options,
weight_decay=FLAGS.weight_decay,
is_training=True,
fine_tune_batch_norm=FLAGS.fine_tune_batch_norm)
logits, _ = model.classification(net,
end_points,
num_classes=FLAGS.num_classes,
is_training=True)
if FLAGS.multi_label:
with tf.name_scope('Multilabel_logits'):
logits = slim.softmax(logits)
half_batch_size = batch_size / 2
for i in range(1, FLAGS.num_classes):
class_logits = tf.identity(logits[:, i],
name='class_logits_%02d' % (i))
class_labels = tf.identity(labels[:, i],
name='class_labels_%02d' % (i))
num_positive = tf.reduce_sum(class_labels)
num_negative = batch_size - num_positive
weights = tf.where(
tf.equal(class_labels, 1.0),
tf.tile([half_batch_size / num_positive], [batch_size]),
tf.tile([half_batch_size / num_negative], [batch_size]))
train_utils.focal_loss(class_labels,
class_logits,
weights=weights,
scope='class_loss_%02d' % (i))
else:
logits = slim.softmax(logits)
train_utils.focal_loss(labels, logits, scope='cls_loss')
if (FLAGS.dataset == 'protein') and FLAGS.add_counts_logits:
counts = tf.identity(samples['counts'] - 1, name='counts')
one_hot_counts = slim.one_hot_encoding(counts, 5)
counts_logits, _ = model.classification(net,
end_points,
num_classes=5,
is_training=True,
scope='Counts_logits')
counts_logits = slim.softmax(counts_logits)
train_utils.focal_loss(one_hot_counts,
counts_logits,
scope='counts_loss')
return logits, counts_logits
return logits
def _add_pixellink_layers(self, basenet, end_points):
with slim.arg_scope([slim.conv2d], activation_fn=None, weights_regularizer=slim.l2_regularizer(self.weight_decay),weights_initializer=tf.contrib.layers.xavier_initializer(),biases_initializer = tf.zeros_initializer()):
pixel_cls_pred = 2
pixel_cls_stage_1 = slim.conv2d(end_points['fc7'], pixel_cls_pred, [1, 1], scope='stage_6_pixel_fuse') + slim.conv2d(end_points['conv5_3'], pixel_cls_pred, [1, 1], scope='stage_5_pixel_fuse')
pixel_cls_stage_2 = self.unpool(pixel_cls_stage_1) + slim.conv2d(end_points['conv4_3'], pixel_cls_pred, [1, 1], scope='stage_4_pixel_fuse')
pixel_cls_stage_3 = self.unpool(pixel_cls_stage_2) + slim.conv2d(end_points['conv3_3'], pixel_cls_pred, [1, 1], scope='stage_3_pixel_fuse')
pixel_cls = slim.conv2d(pixel_cls_stage_3, pixel_cls_pred, [1, 1], scope='text_predication')
link_cls_pred = 16
link_cls_stage_1 = slim.conv2d(end_points['fc7'], link_cls_pred, [1, 1], scope='stage_6_link_fuse') + slim.conv2d(end_points['conv5_3'], link_cls_pred, [1, 1], scope='stage_5_link_fuse')
link_cls_stage_2 = self.unpool(link_cls_stage_1) + slim.conv2d(end_points['conv4_3'], link_cls_pred, [1, 1], scope='stage_4_link_fuse')
link_cls_stage_3 = self.unpool(link_cls_stage_2) + slim.conv2d(end_points['conv3_3'], link_cls_pred, [1, 1], scope='stage_3_link_fuse')
link_cls = slim.conv2d(link_cls_stage_3, link_cls_pred, [1, 1], scope='link_predication')
self.pixel_cls = pixel_cls
self.link_cls = link_cls
self.pixel_scores = slim.softmax(pixel_cls)
link_scores = slim.softmax(link_cls[:,:,:,0:2])
pixel_pred_image = tf.expand_dims(self.pixel_scores[0,:,:,1], 0)
pixel_pred_image = tf.expand_dims(pixel_pred_image, 3)
tf.summary.image('pixel_pred_image', pixel_pred_image)
link_pred_image = tf.expand_dims(link_scores[0,:,:,1], 0)
link_pred_image = tf.expand_dims(link_pred_image, 3)
tf.summary.image('link_pred_image', link_pred_image)
# self.link_scores = tf.stack([link_scores[:,:,:,0],link_scores[:,:,:,2], link_scores[:,:,:,4], link_scores[:,:,:,6], link_scores[:,:,:,8], link_scores[:,:,:,10], link_scores[:,:,:,12], link_scores[:,:,:,14]], axis=3)
tf.summary.histogram('pixel_scores', self.pixel_scores)
tf.summary.histogram('link_scores', link_scores)
return pixel_cls, link_cls
def _add_seglink_layers(self):
all_seg_scores = []
all_seg_offsets = []
all_within_layer_link_scores = []
all_cross_layer_link_scores = []
for layer_name in self.feat_layers:
with tf.variable_scope(layer_name):
seg_scores, seg_offsets, within_layer_link_scores, cross_layer_link_scores = self._build_seg_link_layer(
layer_name)
all_seg_scores.append(seg_scores)
all_seg_offsets.append(seg_offsets)
all_within_layer_link_scores.append(within_layer_link_scores)
all_cross_layer_link_scores.append(cross_layer_link_scores)
self.seg_score_logits = reshape_and_concat(
all_seg_scores) # (batch_size, N, 2)
self.seg_scores = slim.softmax(
self.seg_score_logits) # (batch_size, N, 2)
self.seg_offsets = reshape_and_concat(
all_seg_offsets) # (batch_size, N, 5)
self.cross_layer_link_scores = reshape_and_concat(
all_cross_layer_link_scores) # (batch_size, 8N, 2)
self.within_layer_link_scores = reshape_and_concat(
all_within_layer_link_scores) # (batch_size, 4(N - N_conv4_3), 2)
self.link_score_logits = tf.concat(
[self.within_layer_link_scores, self.cross_layer_link_scores],
axis=1)
self.link_scores = slim.softmax(self.link_score_logits)
tf.summary.histogram('link_scores', self.link_scores)
tf.summary.histogram('seg_scores', self.seg_scores)
def __init__(self, learning_rate=5e-4, context_length=7):
self.probability_tensor = tf.placeholder(dtype='float32', shape=(None, 4))
self.neighbourhood_tensor = tf.placeholder(
dtype='float32', shape=(None, context_length, context_length, 4))
self.label_tensor = tf.placeholder(dtype='int32', shape=(None, 4))
# This version runs during training
with tf.variable_scope("context_classifier"):
with slim.arg_scope([slim.dropout], is_training=True), \
slim.arg_scope([slim.fully_connected], normalizer_params={'is_training':True}):
self.prediction_logits = classifier_model(
self.probability_tensor, self.neighbourhood_tensor)
# This version runs during inference.
with tf.variable_scope("context_classifier", reuse=True):
with slim.arg_scope([slim.dropout], is_training=False), \
slim.arg_scope([slim.fully_connected], normalizer_params={'is_training':False}):
self.inference_prediction_logits = classifier_model(
self.probability_tensor, self.neighbourhood_tensor)
(self.train_op, self.loss) = get_training_op(self.prediction_logits,
self.label_tensor,
learning_rate=learning_rate)
# Compute useful output on top of the network predictions.
self.predictions = slim.softmax(self.prediction_logits)
self.inference_predictions = slim.softmax(self.inference_prediction_logits)
self.dropout_accuracy = utils.get_accuracy(self.predictions, self.label_tensor)
self.accuracy = utils.get_accuracy(self.inference_predictions, self.label_tensor)
self.f1 = utils.get_weighted_f1(self.inference_predictions, self.label_tensor)
self.confusion = utils.get_confusion(self.inference_predictions, self.label_tensor)
def build_model(self):
""" extract feature model """
self.X_feature_S = self.feature_extractor(self.source_images)
self.X_feature_T = self.feature_extractor(self.target_images)
self.class_pred_S = self.classifier(self.X_feature_S)
self.class_pred_T = self.classifier(self.X_feature_T)
self.D_S, self.D_logit_S = self.discriminator(self.X_feature_S)
self.D_T, self.D_logit_T = self.discriminator(self.X_feature_T)
self.D_S_sum = tf.summary.histogram("D_S", self.D_S)
self.D_T_sum = tf.summary.histogram("D_T", self.D_T)
self.C_loss_S = tf.reduce_mean(
tf.nn.sparse_softmax_cross_entropy_with_logits(
labels=self.y_label_S, logits=self.class_pred_S))
self.class_pred_T_softmax = slim.softmax(self.class_pred_T)
self.class_pred_S_softmax = slim.softmax(self.class_pred_S)
self.C_T_softmax_sum_h = tf.summary.histogram(
"class_pred_T_softmax", self.class_pred_T_softmax)
self.C_loss_T = -self.lambda_T * tf.reduce_mean(
tf.reduce_sum(
self.class_pred_T_softmax * tf.log(self.class_pred_T_softmax),
axis=1))
self.C_loss_S_sum = tf.summary.scalar("C_loss_S", self.C_loss_S)
self.C_loss_T_sum = tf.summary.scalar("C_loss_T", self.C_loss_T)
self.D_loss_S = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(logits=self.D_logit_S,
labels=self.label_sd))
self.D_loss_T = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(logits=self.D_logit_T,
labels=self.label_td))
self.D_loss = self.BetaGD * (self.D_loss_S + self.D_loss_T)
self.D_loss_S_sum = tf.summary.scalar("D_loss_S", self.D_loss_S)
self.D_loss_T_sum = tf.summary.scalar("D_loss_T", self.D_loss_T)
self.D_loss_sum = tf.summary.scalar("D_loss", self.D_loss)
self.G_loss_S = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(logits=self.D_logit_S,
labels=self.label_sg))
self.G_loss_T = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(logits=self.D_logit_T,
labels=self.label_tg))
self.G_loss = self.BetaGD * (self.G_loss_T + self.G_loss_S)
self.G_loss_S_sum = tf.summary.scalar("G_loss_S", self.G_loss_S)
self.G_loss_T_sum = tf.summary.scalar("G_loss_T", self.G_loss_T)
self.G_loss_sum = tf.summary.scalar("G_loss", self.G_loss)
self.saver = tf.train.Saver()
def construct_xybin_v1(images, is_training, n_bins):
batch_norm_params = {
'is_training': is_training,
'decay': 0.8,
'updates_collections': None,
'center': True,
'scale': True,
'trainable': True
}
with slim.arg_scope([slim.conv2d],
activation_fn=tf.nn.relu,
padding='SAME',
weights_initializer=tf.truncated_normal_initializer(
0.0, 0.01),
weights_regularizer=slim.l2_regularizer(0.0005),
normalizer_fn=slim.batch_norm,
normalizer_params=batch_norm_params):
mynet = slim.repeat(images, 2, slim.conv2d, 16, [3, 3], scope='conv1')
mynet = slim.max_pool2d(mynet, [2, 2], scope='pool1')
mynet = slim.repeat(mynet, 2, slim.conv2d, 32, [3, 3], scope='conv2')
mynet = slim.max_pool2d(mynet, [2, 2], scope='pool2')
mynet = slim.repeat(mynet, 2, slim.conv2d, 64, [3, 3], scope='conv3')
mynet = slim.max_pool2d(mynet, [2, 2], scope='pool3')
mynet = slim.repeat(mynet, 2, slim.conv2d, 128, [3, 3], scope='conv4')
mynet = slim.max_pool2d(mynet, [2, 2], scope='pool4')
mynet = slim.repeat(mynet, 2, slim.conv2d, 256, [3, 3], scope='conv5')
mynet = slim.max_pool2d(mynet, [2, 2], scope='pool5')
features = slim.flatten(mynet, scope='flatten')
with slim.arg_scope([slim.fully_connected],
activation_fn=tf.nn.relu,
weights_initializer=tf.truncated_normal_initializer(
0.0, 0.01),
weights_regularizer=slim.l2_regularizer(0.0005),
normalizer_fn=slim.batch_norm,
normalizer_params=batch_norm_params):
# To add additional fully connected layers...
# Our tests showed no substantial difference
#mynet = slim.fully_connected(mynet, 4096, scope='fc5')
#mynet = slim.dropout(mynet, 0.5, scope='dropout5')
#mynet = slim.fully_connected(mynet, 4096, scope='fc6')
#mynet = slim.dropout(mynet, 0.5, scope='dropout6')
xbins = slim.fully_connected(features,
n_bins,
activation_fn=None,
scope='xbins')
xbins = slim.softmax(xbins, scope='smx')
ybins = slim.fully_connected(features,
n_bins,
activation_fn=None,
scope='ybins')
ybins = slim.softmax(ybins, scope='smy')
mynet = tf.stack([xbins, ybins])
return mynet, features
def build_model(self):
""" classier Net model """
self.C_W1 = tf.Variable(self.xavier_init([self.feature_dim, self.category_num]))
self.C_b1 = tf.Variable(tf.zeros(shape=[self.category_num]))
self.theta_C = [self.C_W1,self.C_b1]
self.D_W1 = tf.Variable(self.xavier_init([self.feature_dim, self.h1_dim]))
self.D_b1 = tf.Variable(tf.zeros(shape=[self.h1_dim]))
self.D_W2 = tf.Variable(self.xavier_init([self.h1_dim, self.h2_dim]))
self.D_b2 = tf.Variable(tf.zeros(shape=[self.h2_dim]))
self.D_W3 = tf.Variable(self.xavier_init([self.h2_dim, self.category_num+1]))
self.D_b3 = tf.Variable(tf.zeros(shape=[self.category_num+1]))
self.theta_D = [self.D_W1, self.D_W2, self.D_W3,self.D_b1, self.D_b2, self.D_b3]
""" extract feature model """
self.X_feature_S = self.feature_extractor(self.source_images,reuse=None)
self.X_feature_T = self.feature_extractor(self.target_images,reuse=True)
self.D_S, self.D_logit_S = self.discriminator(self.X_feature_S)
self.D_T, self.D_logit_T = self.discriminator(self.X_feature_T)
self.class_pred_S = self.classifier(self.X_feature_S)
self.class_pred_T = self.classifier(self.X_feature_T)
self.D_S_sum = tf.summary.histogram("D_S", self.D_S)
self.D_T_sum = tf.summary.histogram("D_T", self.D_T)
self.C_loss_S = tf.reduce_mean(tf.nn.sparse_softmax_cross_entropy_with_logits(labels=self.y_label_S,logits=self.class_pred_S))
self.class_pred_T_softmax = slim.softmax(self.class_pred_T)
self.class_pred_S_softmax = slim.softmax(self.class_pred_S)
self.C_T_softmax_sum_h = tf.summary.histogram("class_pred_T_softmax", self.class_pred_T_softmax)
#self.C_T_softmax_sum_d = tf.summary.scalar("class_pred_T_softmax", self.class_pred_T_softmax)
self.C_loss_T = -self.lambda_T *tf.reduce_mean(tf.reduce_sum(self.class_pred_T_softmax * tf.log(self.class_pred_T_softmax), axis=1))
self.C_loss_S_sum = tf.summary.scalar("C_loss_S", self.C_loss_S)
self.C_loss_T_sum = tf.summary.scalar("C_loss_T", self.C_loss_T)
self.D_loss_S = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(logits=self.D_logit_S, labels=self.label_sd))
self.D_loss_T = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(logits=self.D_logit_T, labels=self.label_td))
self.D_loss = self.BetaGD * (self.D_loss_S + self.D_loss_T)
#self.D_loss = self.BetaGD * self.D_loss_T
self.D_loss_S_sum = tf.summary.scalar("D_loss_S", self.D_loss_S)
self.D_loss_T_sum = tf.summary.scalar("D_loss_T", self.D_loss_T)
self.D_loss_sum = tf.summary.scalar("D_loss", self.D_loss)
self.G_loss_S = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(logits=self.D_logit_S, labels=self.label_sg))
self.G_loss_T = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(logits=self.D_logit_T, labels=self.label_tg))
self.G_loss = self.BetaGD*(self.G_loss_T + self.G_loss_S)
#self.G_loss = self.BetaGD*(self.G_loss_T + self.G_loss_S)
self.G_loss_S_sum = tf.summary.scalar("G_loss_S", self.G_loss_S)
self.G_loss_T_sum = tf.summary.scalar("G_loss_T", self.G_loss_T)
self.G_loss_sum = tf.summary.scalar("G_loss", self.G_loss)
self.saver = tf.train.Saver(max_to_keep=1)
def fast_rcnn_predict(self):
with tf.variable_scope('fast_rcnn_predict'):
fast_rcnn_softmax_scores = slim.softmax(
self.fast_rcnn_scores) # [-1, num_classes+1]
fast_rcnn_softmax_scores_rotate = slim.softmax(
self.fast_rcnn_scores_rotate) # [-1, num_classes+1]
fast_rcnn_encode_boxes = tf.reshape(self.fast_rcnn_encode_boxes,
[-1, 4])
fast_rcnn_encode_boxes_rotate = tf.reshape(
self.fast_rcnn_encode_boxes_rotate, [-1, 5])
reference_boxes = tf.tile(
self.fast_rcnn_all_level_proposals,
[1, self.num_classes]) # [N, 4*num_classes]
reference_boxes = tf.reshape(reference_boxes,
[-1, 4]) # [N*num_classes, 4]
fast_rcnn_decode_boxes = encode_and_decode.decode_boxes(
encode_boxes=fast_rcnn_encode_boxes,
reference_boxes=reference_boxes,
scale_factors=self.scale_factors)
fast_rcnn_decode_boxes_rotate = \
encode_and_decode.decode_boxes_rotate(encode_boxes=fast_rcnn_encode_boxes_rotate,
reference_boxes=reference_boxes,
scale_factors=self.scale_factors)
fast_rcnn_decode_boxes = boxes_utils.clip_boxes_to_img_boundaries(
fast_rcnn_decode_boxes, img_shape=self.img_shape)
# mutilclass NMS
fast_rcnn_decode_boxes = tf.reshape(fast_rcnn_decode_boxes,
[-1, self.num_classes * 4])
fast_rcnn_decode_boxes_rotate = tf.reshape(
fast_rcnn_decode_boxes_rotate, [-1, self.num_classes * 5])
fast_rcnn_decode_boxes, fast_rcnn_score, num_of_objects, detection_category = \
self.fast_rcnn_proposals(fast_rcnn_decode_boxes, scores=fast_rcnn_softmax_scores)
fast_rcnn_decode_boxes_rotate, fast_rcnn_score_rotate, fast_rcnn_head_quadrant, \
num_of_objects_rotate, detection_category_rotate = \
self.fast_rcnn_proposals_rotate(fast_rcnn_decode_boxes_rotate,
scores=fast_rcnn_softmax_scores_rotate,
head_quadrant=self.fast_rcnn_head_quadrant)
return fast_rcnn_decode_boxes, fast_rcnn_score, num_of_objects, detection_category,\
fast_rcnn_decode_boxes_rotate, fast_rcnn_score_rotate, fast_rcnn_head_quadrant, \
num_of_objects_rotate, detection_category_rotate
def build_model(
x,
y,
num_classes=2,
num_estimator=3, #we missuse num_estimator for the number of convolutions
num_filter=128,
is_training=True,
reuse=None):
"""
handle model. calculate the loss and the prediction for some input x and the corresponding labels y
input: x shape=[None,bands,frames,num_channels], y shape=[None]
output: loss shape=(1), prediction shape=[None]
CAUTION! controller.py uses a function whith this name and arguments.
here we do boosting without additive training
"""
#preprocess
y = slim.one_hot_encoding(y, num_classes)
#model
with tf.variable_scope('model_v1'):
predictions = classify(x,
num_classes=num_classes,
num_filter=num_filter,
route=num_estimator,
is_training=is_training,
reuse=reuse,
scope='wk')
loss = loss_fkt(predictions, y)
#results
predictions = tf.argmax(slim.softmax(predictions), 1)
return loss, predictions
def rpn_proposals(self):
with tf.variable_scope('rpn_proposals'):
rpn_decode_boxes = encode_and_decode.decode_boxes(encode_boxes=self.rpn_encode_boxes,
reference_boxes=self.anchors,
scale_factors=self.scale_factors)
if not self.is_training: # when test, clip proposals to img boundaries
img_shape = tf.shape(self.img_batch)
rpn_decode_boxes = boxes_utils.clip_boxes_to_img_boundaries(rpn_decode_boxes, img_shape)
rpn_softmax_scores = slim.softmax(self.rpn_scores)
rpn_object_score = rpn_softmax_scores[:, 1] # second column represent object
if self.top_k_nms:
rpn_object_score, top_k_indices = tf.nn.top_k(rpn_object_score, k=self.top_k_nms)
rpn_decode_boxes = tf.gather(rpn_decode_boxes, top_k_indices)
valid_indices = nms.non_maximal_suppression(boxes=rpn_decode_boxes,
scores=rpn_object_score,
max_output_size=self.max_proposals_num,
iou_threshold=self.rpn_nms_iou_threshold)
valid_boxes = tf.gather(rpn_decode_boxes, valid_indices)
valid_scores = tf.gather(rpn_object_score, valid_indices)
rpn_proposals_boxes, rpn_proposals_scores = tf.cond(
tf.less(tf.shape(valid_boxes)[0], self.max_proposals_num),
lambda: boxes_utils.padd_boxes_with_zeros(valid_boxes, valid_scores,
self.max_proposals_num),
lambda: (valid_boxes, valid_scores))
return rpn_proposals_boxes, rpn_proposals_scores
def slim_model(inputs):
with tf.variable_scope("slim-fc", [inputs]) as vs:
end_points_collection = vs.original_name_scope + "_endpoints"
with slim.arg_scope(
[slim.fully_connected],
activation_fn=tf.nn.relu,
weights_initializer=tf.random_normal_initializer(stddev=0.1),
biases_initializer=tf.constant_initializer(1.0),
weights_regularizer=slim.l2_regularizer(0.05),
outputs_collections=end_points_collection):
net = slim.fully_connected(
inputs,
num_outputs=n_hidden1,
weights_initializer=tf.random_normal_initializer(stddev=0.1),
scope="fc1")
net = slim.fully_connected(
net,
num_outputs=n_hidden2,
weights_initializer=tf.random_normal_initializer(stddev=0.1),
scope="fc2")
net = slim.fully_connected(
net,
num_outputs=n_outputs,
weights_initializer=tf.random_normal_initializer(stddev=0.1),
activation_fn=None,
scope="outputs")
logits = slim.softmax(net, scope="softmax")
end_points = slim.utils.convert_collection_to_dict(
end_points_collection)
return logits, end_points
def inference(self):
"""
LeNet
:return:
"""
def init_weights(shape):
return tf.Variable(tf.random_normal(shape, stddev=0.01))
# input reshaping
#X = tf.random_normal([1, 28, 28,1])
X = tf.reshape(self.X, [-1, 28, 28, 1])
net = slim.conv2d(X, 32, [5, 5], scope='conv1')
net = slim.max_pool2d(net, [2, 2], 2, scope='pool1')
net = slim.conv2d(net, 64, [5, 5], scope='conv2')
net = slim.max_pool2d(net, [2, 2], 2, scope='pool2')
net = slim.flatten(net)
net = slim.fully_connected(net, 1024, scope='fc3')
self.logits = slim.fully_connected(net,
10,
activation_fn=None,
scope='fc4')
self.Y_hat = slim.softmax(self.logits, scope='Predictions') # softmax
def train(epoch_num=200, batch_size=20):
images, labels = mnist_util.load_mnist(mnist_params.MNIST_DATASET_PATH,
'train')
images = np.reshape(images, (-1, 28, 28, 1)).astype(np.float32)
labels = dense_to_one_hot(labels, mnist_params.MNIST_NUM_CLASSES).astype(
np.float32)
watch = log_util.Watch('TrainInfo')
with tf.Session() as sess:
with tf.variable_scope('mnist'), \
slim.arg_scope([slim.conv2d, slim.fully_connected],
weights_initializer=tf.truncated_normal_initializer(stddev=0.01),
biases_initializer=tf.zeros_initializer(),
activation_fn=tf.nn.relu,
trainable=True):
global_step = tf.Variable(0, name='global_step', trainable=False)
image_batch = tf.placeholder(tf.float32,
shape=(None, 28, 28, 1),
name='image')
x = slim.flatten(image_batch)
logits = slim.fully_connected(x, 10)
label_batch = tf.placeholder(
tf.float32,
shape=(None, mnist_params.MNIST_NUM_CLASSES),
name='label')
cross_entropy = tf.nn.sigmoid_cross_entropy_with_logits(
logits=logits, labels=label_batch)
predict = slim.softmax(cross_entropy)
loss = tf.reduce_mean(cross_entropy)
optimizer = tf.train.AdamOptimizer(learning_rate=0.05,
epsilon=1.0e-08,
name='adam')
optimizer.minimize(loss, global_step=global_step, name='train_op')
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
# coord = tf.train.Coordinator()
# threads = tf.train.start_queue_runners(sess, coord)
train_op = sess.graph.get_operation_by_name('mnist/train_op')
total_loss = 0
for i in range(200):
for j in range(len(images) // batch_size):
try:
input_image = images[batch_size * j:batch_size * (j + 1)]
input_label = labels[batch_size * j:batch_size * (j + 1)]
[r_step, r_loss,
_] = sess.run([global_step, loss, train_op],
feed_dict={
image_batch: input_image,
label_batch: input_label
})
total_loss += r_loss
watch.display('step %d, loss is %.3f' % (r_step, r_loss))
# watch.display('step %d, loss is %.3f, label is %s, image is %s'
# % (r_step, r_loss, str(input_label.argmax(axis=1)), str(input_image[:, 14, 14, 0])))
except tf.errors.OutOfRangeError:
saver.save(sess, mnist_params.MNIST_MODEL)
print('done training mnist')
break
def create(self,is_training=False):
with tf.variable_scope(self.scope, reuse=self.reuse):
with slim.arg_scope([slim.fully_connected], activation_fn=tf.nn.relu):
with slim.arg_scope([slim.conv2d], activation_fn=tf.nn.relu, padding='VALID'):
net=self.inputs
net = slim.conv2d(net, 64, 5, scope='conv1')
self.conv1=net
net = slim.max_pool2d(net, 2, stride=2, scope='pool1')
self.pool1 = net
net = slim.conv2d(net,128, 5, scope='conv2')
self.conv2= net
net = slim.max_pool2d(net, 2, stride=2, scope='pool2')
self.pool2= net
self.cmp=net
net = tf.contrib.layers.flatten(net)
self.att_flat=net
net = slim.fully_connected(net, 1024, activation_fn=tf.nn.relu, scope='fc3')
self.fc3= net
net = slim.dropout(net,0.5, is_training=self.training_flag)
net = slim.fully_connected(net,64, activation_fn=tf.tanh,scope='fc4')
self.fc4 = net
net = slim.fully_connected(net,10, activation_fn=None, scope='fc5')
self.fc5 = net
self.softmax_output=slim.softmax(net,scope='prediction')
def inference(self):
with slim.arg_scope([slim.conv2d],
kernel_size=3,
reuse=None,
trainable=True):
with slim.arg_scope([slim.max_pool2d],
kernel_size=2,
stride=2,
padding='VALID'):
net = slim.conv2d(self.input_image, 32, scope='layer1_conv')
print_activations(net)
net = slim.max_pool2d(net, scope='pool1')
print_activations(net)
net = slim.conv2d(net, 64, scope='layer2_conv')
print_activations(net)
net = slim.max_pool2d(net, scope='pool2')
print_activations(net)
net = slim.conv2d(net, 128, scope='layer3_conv')
print_activations(net)
net = slim.max_pool2d(net, scope='pool3')
print_activations(net)
net = slim.conv2d(net, 256, scope='layer4_conv')
print_activations(net)
net = slim.max_pool2d(net, scope='pool4')
print_activations(net)
net = tf.reshape(net, [-1, 3 * 3 * 256])
net = slim.fully_connected(net, 512, scope='layer5_fc')
print_activations(net)
net = slim.fully_connected(net, 256, scope='layer6_fc')
print_activations(net)
net=slim.fully_connected(net,self.num_class,activation_fn=None, scope='layer7_fc')
print_activations(net)
net = slim.softmax(net)
print_activations(net)
return net
def qmoe_attention(im,
quest,
embed_dim,
keep_prob=1.0,
num_units=4,
reuse=False,
scope="MoeAttention"):
with tf.variable_scope(scope, reuse=reuse):
im_ctx = mlb(im, quest, embed_dim, keep_prob)
# soft attention
s_logits = slim.conv2d(im_ctx,
num_units, [1, 1],
activation_fn=None,
scope='sp_logits')
# spatial softmax
att_maps = _spatial_softmax(s_logits)
# aggregate visual features
att_basis = _spatial_aggregate(im, att_maps, normalize=False)
# compute gate
with tf.variable_scope('Gate'):
gate_basis = _3d_mlb(att_basis, quest, embed_dim, keep_prob)
gate_logits = slim.fully_connected(gate_basis,
1,
activation_fn=None,
scope='logits')
gates = tf.squeeze(gate_logits, squeeze_dims=[2])
gates = tf.expand_dims(slim.softmax(gates), 2)
output = tf.reduce_sum(tf.mul(att_basis, gates), reduction_indices=1)
return output
def moe_attention(im,
quest,
embed_dim,
keep_prob=1.0,
num_units=4,
reuse=False,
scope="MoeAttention"):
with tf.variable_scope(scope, reuse=reuse):
im_ctx = mlb(im, quest, embed_dim, keep_prob)
# soft attention
s_logits = slim.conv2d(im_ctx,
num_units, [1, 1],
activation_fn=None,
scope='sp_logits')
# spatial softmax
att_maps = _spatial_softmax(s_logits)
# aggregate visual features
att_basis = _spatial_aggregate(im, att_maps, normalize=False)
# compute gate
with tf.variable_scope('Gate'):
im_ctx = tf.reduce_mean(im, reduction_indices=[1, 2])
vq_embed = mlb(im_ctx, quest, embed_dim / 4, keep_prob,
'gate_prelogit')
# vq_ctx = tf.concat(concat_dim=1, values=[im_ctx, quest])
# vq_embed = slim.fully_connected(vq_ctx, embed_dim, scope='vq_embed')
# vq_embed = slim.dropout(vq_embed, keep_prob)
gates = slim.fully_connected(vq_embed,
num_units,
activation_fn=None,
scope='gate')
gates = tf.expand_dims(slim.softmax(gates), 2)
output = tf.reduce_sum(tf.mul(att_basis, gates), reduction_indices=1)
return output
def vgg16Model(input_data, num_classes,keep_prob):
with slim.arg_scope([slim.conv2d, slim.fully_connected],
activation_fn=tf.nn.relu,
weights_initializer=tf.truncated_normal_initializer(0.0, 0.01),
weights_regularizer=slim.l2_regularizer(0.0005)):
#第一段卷积堆叠，两层堆叠，conv3-64的意义是3*3的卷积核一共64个
net = slim.repeat(input_data, 2, slim.conv2d, 64, [3, 3], scope='conv1')
net = slim.max_pool2d(net, [2, 2], scope='pool1')
#第二段卷积核堆叠，两层堆叠，128个3*3的卷积核，注意这里和感受野的区别
net = slim.repeat(net, 2, slim.conv2d, 128, [3, 3], scope='conv2')
net = slim.max_pool2d(net, [2, 2], scope='pool2')
#第三段卷积核堆叠，三层堆叠，256个3*3的卷积核，注意这里和感受野的区别
net = slim.repeat(net, 3, slim.conv2d, 256, [3, 3], scope='conv3')
net = slim.max_pool2d(net, [2, 2], scope='pool3')
#第四段卷积核堆叠，三层堆叠，512个3*3的卷积核，注意这里和感受野的区别
net = slim.repeat(net, 3, slim.conv2d, 512, [3, 3], scope='conv4')
net = slim.max_pool2d(net, [2, 2], scope='pool4')
#第五段卷积核堆叠，三层堆叠，512个3*3的卷积核，注意这里和感受野的区别
net = slim.repeat(net, 3, slim.conv2d, 512, [3, 3], scope='conv5')
net = slim.max_pool2d(net, [2, 2], scope='pool5')
#Flatten层用来将输入“压平”，即把多维的输入一维化，常用在从卷积层到全连接层的过渡。Flatten不影响batch的大小。
net = slim.flatten(net, scope='flat')
#全连接层
net = slim.fully_connected(net, 4096, scope='fc1')
net = slim.dropout(net, keep_prob=keep_prob, scope='dropt1')
#全连接层
net = slim.fully_connected(net, 4096, scope='fc2')
net = slim.dropout(net, keep_prob=keep_prob, scope='dropt2')
#全连接层
net = slim.fully_connected(net, num_classes, scope='fc3')
net = slim.softmax(net, scope='net')
return net
def rpn(self, inputs):
rpn_conv3x3 = slim.conv2d(inputs,
512, [3, 3],
trainable=self.is_training,
weights_initializer=self.cfgs.INITIALIZER,
activation_fn=tf.nn.relu,
scope='rpn_conv/3x3')
rpn_cls_score = slim.conv2d(rpn_conv3x3,
self.num_anchors_per_location * 2, [1, 1],
stride=1,
trainable=self.is_training,
weights_initializer=self.cfgs.INITIALIZER,
activation_fn=None,
scope='rpn_cls_score')
rpn_box_pred = slim.conv2d(
rpn_conv3x3,
self.num_anchors_per_location * 4, [1, 1],
stride=1,
trainable=self.is_training,
weights_initializer=self.cfgs.BBOX_INITIALIZER,
activation_fn=None,
scope='rpn_bbox_pred')
rpn_cls_prob = slim.softmax(rpn_cls_score, scope='rpn_cls_prob')
return rpn_box_pred, rpn_cls_score, rpn_cls_prob
def build_model(x,
y,
num_classes=2,
is_training=True,
reuse=None
):
"""
handle model. calculate the loss and the prediction for some input x and the corresponding labels y
input: x shape=[None,bands,frames,num_channels], y shape=[None]
output: loss shape=(1), prediction shape=[None]
CAUTION! controller.py uses a function whith this name and arguments.
"""
#preprocess
y = slim.one_hot_encoding(y, num_classes)
#model
with slim.arg_scope(densenet_arg_scope(is_training)):
x = tf.expand_dims(x, -1)
logits = densenet(x, num_classes, reuse=reuse)
#results
loss = tf.reduce_mean(tf.losses.softmax_cross_entropy(logits = logits, onehot_labels = y))
predictions = tf.argmax(slim.softmax(logits),1)
return loss, predictions
def create_network(self, inputs, dropout=0.0):
# Create the segnet model as described in the paper
with tf.variable_scope("segmentor", reuse=None):
## Encoder
x = self.conv_block(inputs, no_convs=2, filters=64, dropout=dropout)
skip1 = x
x = self.conv_block(x, no_convs=2, filters=128, dropout=dropout)
skip2 = x
x = self.conv_block(x, no_convs=3, filters=256, dropout=dropout)
skip3 = x
x = self.conv_block(x, no_convs=3, filters=512, dropout=dropout)
skip4 = x
x = self.conv_block(x, no_convs=3, filters=512, dropout=dropout)
## Decoder
x = self.conv_transpose_block(x, no_convs=3, filters=512, dropout=dropout)
x = tf.add(x, skip4)
x = self.conv_transpose_block(x, no_convs=3, filters=512, dropout=dropout, recude_on_last=True)
x = tf.add(x, skip3)
x = self.conv_transpose_block(x, no_convs=3, filters=256, dropout=dropout, recude_on_last=True)
x = tf.add(x, skip2)
x = self.conv_transpose_block(x, no_convs=2, filters=128, dropout=dropout, recude_on_last=True)
x = tf.add(x, skip1)
x = self.conv_transpose_block(x, no_convs=2, filters=64, dropout=dropout)
## Out
x = slim.conv2d(x, self.classes, 1, activation_fn=None, scope='logits')
x = slim.softmax(x)
return x
def init_shufflenet(self, param):
nr_groups = param['filter_group']
out_channel = param['out_channel']
complexity = param['complexity_scale_factor']
H_W = 224
out_channel = int(out_channel*complexity)
input = tf.placeholder(tf.float32, [1, H_W, H_W, 3],name='input_tensor')
layer = slim.convolution2d(input, 24, kernel_size=[3, 3])
layer = tf.layers.max_pooling2d(layer, pool_size = 3,
strides = 2, padding='valid')
# Stage 2
layer = self.shuffle_unit(layer, nr_groups, first=True)
for i in range():
layer = self.shuffle_unit(layer, nr_groups)
# Stage 3
layer = self.shuffle_unit(layer, nr_groups, stride = 2)
for i in range():
layer = self.shuffle_unit(layer, nr_groups)
# Stage 4
layer = self.shuffle_unit(layer, nr_groups, stride = 2)
for i in range():
layer = self.shuffle_unit(layer, nr_groups)
# Outputs
global_pool = tf.reduce_mean(layer, axis = [1,2])
spatial_reduction = tf.squeeze(global_pool, [1, 2], name='SpatialSqueeze')
logits = slim.fully_connected(spatial_reduction, 1000,
activation_fn=None, scope='fc')
output = slim.softmax(logits, scope='Predictions')
output = tf.identity(output, name="output_tensor")
return {'input': input, 'output': output, 'logits': global_pool}
def rpn_proposals(self):
with tf.variable_scope('rpn_proposals'):
rpn_decode_boxes = encode_and_decode.decode_boxes(encode_boxes=self.rpn_encode_boxes,
reference_boxes=self.anchors,
scale_factors=self.scale_factors)
rpn_softmax_scores = slim.softmax(self.rpn_scores)
rpn_object_score = rpn_softmax_scores[:, 1] # second column represent object
if self.top_k_nms:
rpn_object_score, top_k_indices = tf.nn.top_k(rpn_object_score, k=self.top_k_nms)
rpn_decode_boxes = tf.gather(rpn_decode_boxes, top_k_indices)
# NMS
valid_indices = tf_wrapper.nms_rotate_tf(boxes_list=rpn_decode_boxes,
scores=rpn_object_score,
iou_threshold=self.rpn_nms_iou_threshold,
max_output_size=self.max_proposals_num,
use_gpu=cfgs.NMS_USE_GPU)
valid_boxes = tf.gather(rpn_decode_boxes, valid_indices)
valid_scores = tf.gather(rpn_object_score, valid_indices)
# print_tensors(valid_scores, 'rpn_score')
rpn_proposals_boxes, rpn_proposals_scores = tf.cond(
tf.less(tf.shape(valid_boxes)[0], self.max_proposals_num),
lambda: boxes_utils.padd_boxes_with_zeros(valid_boxes, valid_scores,
self.max_proposals_num),
lambda: (valid_boxes, valid_scores))
return rpn_proposals_boxes, rpn_proposals_scores
def slim_model(inputs):
with slim.arg_scope(
[slim.conv2d, slim.fully_connected],
activation_fn=tf.nn.relu,
weights_initializer=tf.truncated_normal_initializer(stddev=0.1),
biases_initializer=tf.constant_initializer(1.0),
weights_regularizer=slim.l2_regularizer(0.05)):
with slim.arg_scope([slim.conv2d],
kernel_size=[3, 3],
padding="SAME",
biases_initializer=tf.constant_initializer(0.0)):
with slim.arg_scope([slim.max_pool2d],
kernel_size=[2, 2],
padding="SAME"):
net = slim.repeat(inputs, 2, slim.conv2d, 64, scope="conv1")
net = slim.max_pool2d(net, scope="poo1")
net = slim.repeat(net, 2, slim.conv2d, 128, scope="conv2")
net = slim.max_pool2d(net, scope="poo2")
net = slim.flatten(net)
net = slim.fully_connected(net, 1024, scope="fc3")
net = slim.dropout(net, 0.5, scope="dropout3")
net = slim.fully_connected(net, 256, scope="fc4")
net = slim.dropout(net, 0.5, scope="dropout4")
net = slim.fully_connected(net,
10,
activation_fn=None,
scope="linear")
outputs = slim.softmax(net, scope="softmax4")
return outputs
def rpn_proposals(self):
'''
:param:self.anchors: shape:[-1, 4]->[ymin, xmin, ymax, xmax]
:param:self.rpn_scores: shape:[-1, 2]->[backgroud, foreground]
:param:self.rpn_encode_boxes: shape:[-1, 4]->[ycenter, xcenter, h, w]
:return: valid_boxes [2000, 4]
:return: valid_scores [2000,]
'''
with tf.variable_scope('rpn_proposals'):
rpn_decode_boxes = encode_and_decode.decode_boxes(
encode_boxes=self.rpn_encode_boxes,
reference_boxes=self.anchors,
scale_factors=self.scale_factors)
if not self.is_training:
image_shape = tf.shape(self.img_batch)
rpn_decode_boxes = boxes_utils.clip_boxes_to_img_boundaries(
rpn_decode_boxes, image_shape)
rpn_softmax_scores = slim.softmax(self.rpn_scores)
rpn_object_score = rpn_softmax_scores[:, 1]
if self.top_k_nms:
rpn_object_score, top_k_indices = tf.nn.top_k(rpn_object_score,
k=self.top_k_nms)
rpn_decode_boxes = tf.gather(rpn_decode_boxes, top_k_indices)
nms_indices = boxes_utils.non_maximal_suppression(
rpn_decode_boxes, rpn_object_score, self.rpn_nms_iou_threshold,
self.max_proposal_num)
valid_scores = tf.gather(rpn_object_score, nms_indices)
valid_boxes = tf.gather(rpn_decode_boxes, nms_indices)
return valid_boxes, valid_scores
def _bulid_fc(self, x, out_num, name):
with tf.variable_scope('fc' + name):
x = slim.layers.fully_connected(x, 512)
x = slim.layers.fully_connected(x, 256)
x = slim.layers.fully_connected(x, out_num, None)
after_softmax_x = slim.softmax(x)
return x, after_softmax_x
def build_model(x,
y,
num_classes=2,
is_training=True,
num_estimator=None,
num_filter=None,
reuse=None):
"""
handle model. calculate the loss and the prediction for some input x and the corresponding labels y
input: x shape=[None,bands,frames,num_channels], y shape=[None]
output: loss shape=(1), prediction shape=[None]
CAUTION! controller.py uses a function whith this name and arguments.
"""
#preprocess
y = slim.one_hot_encoding(y, num_classes)
print('input: ', x.get_shape())
#model
logits = RNN_deepcough(x,
num_outputs=num_classes,
reuse=reuse,
is_training=is_training)
#results
loss = tf.reduce_mean(softmax_cross_entropy(logits=logits,
onehot_labels=y))
predictions = tf.argmax(slim.softmax(logits), 1)
return loss, predictions
def fast_rcnn_predict(self):
with tf.variable_scope('fast_rcnn_predict'):
fast_rcnn_softmax_scores = slim.softmax(
self.fast_rcnn_scores) # [-1, num_classes+1]
fast_rcnn_encode_boxes = tf.reshape(
self.fast_rcnn_encode_boxes,
[-1, 4
]) # fast_rcnn_encode_box oral_shape is[-1, 4*num_classes]
reference_boxes = tf.tile(
self.fast_rcnn_all_level_proposals, [1, self.num_classes]
) # [N, 4*num_classes] ??? bob query--reason is consist with encode_box
reference_boxes = tf.reshape(reference_boxes,
[-1, 4]) # [N*num_classes, 4]
fast_rcnn_decode_boxes = encode_and_decode.decode_boxes(
encode_boxes=fast_rcnn_encode_boxes,
reference_boxes=reference_boxes,
scale_factors=self.scale_factors)
fast_rcnn_decode_boxes = boxes_utils.clip_boxes_to_img_boundaries(
fast_rcnn_decode_boxes, img_shape=self.img_shape)
# mutilclass NMS
fast_rcnn_decode_boxes = tf.reshape(fast_rcnn_decode_boxes,
[-1, self.num_classes * 4])
fast_rcnn_decode_boxes, fast_rcnn_score, num_of_objects, detection_category = \
self.fast_rcnn_proposals(fast_rcnn_decode_boxes, scores=fast_rcnn_softmax_scores)
return fast_rcnn_decode_boxes, fast_rcnn_score, num_of_objects, detection_category
def build_model(x,
y,
num_classes=2,
num_estimator=10,
is_training=True,
reuse=None
):
"""
handle model. calculate the loss and the prediction for some input x and the corresponding labels y
input: x shape=[None,bands,frames,num_channels], y shape=[None]
output: loss shape=(1), prediction shape=[None]
CAUTION! controller.py uses a function whith this name and arguments.
here we do boosting without additive training
"""
#preprocess
y = slim.one_hot_encoding(y, num_classes)
#model
logits = 0
offset = 30 // num_estimator
for i in range(num_estimator):
#x = tf.image.crop_to_bounding_box(x, 0, offset * i, 16, 16)
predictions, gamma = classify(x, num_estimator=num_estimator, num_classes=num_classes, is_training=is_training, reuse=reuse, scope='c%d'%i)
zeta = gamma * 2 / (i+1)
logits = (1-zeta) * logits + zeta * predictions
#results
loss = tf.reduce_mean(tf.losses.softmax_cross_entropy(logits = logits, onehot_labels = y, label_smoothing=0.05))
predictions = tf.argmax(slim.softmax(logits),1)
return loss, predictions
def model_slim(images, labels, is_training):
net = slim.conv2d(images, 32, [5, 5], scope='conv1')
net = slim.max_pool2d(net, [2, 2], stride=2, scope='pool1')
net = slim.conv2d(net, 64, [5, 5], scope='conv2')
net = slim.max_pool2d(net, [2, 2], stride=2, scope='pool2')
net = slim.flatten(net, scope='flatten')
net = slim.fully_connected(net, 1024, scope='fully_connected1')
net = slim.dropout(net, keep_prob=0.6, is_training=is_training)
logits = slim.fully_connected(net, 10, activation_fn=None, scope='fully_connected2')
prob = slim.softmax(logits)
loss = slim.losses.sparse_softmax_cross_entropy(logits, labels)
global_step = tf.train.get_or_create_global_step()
num_batches_per_epoch = TRAIN_EXAMPLES_NUM / FLAGS.batch_size
decay_steps = int(num_batches_per_epoch * 10)
# Decay the learning rate exponentially based on the number of steps.
lr = tf.train.exponential_decay(learning_rate=0.001,
global_step=global_step,
decay_steps=decay_steps,
decay_rate=0.1,
staircase=True)
opt = tf.train.AdamOptimizer(learning_rate=lr)
return opt, loss, prob
def build_model(x,
y,
num_classes=2,
num_estimator=None, #we missuse num_estimator for the number of convolutions
num_filter=16,
is_training=True,
reuse=None
):
"""
handle model. calculate the loss and the prediction for some input x and the corresponding labels y
input: x shape=[None,bands,frames,num_channels], y shape=[None]
output: loss shape=(1), prediction shape=[None]
CAUTION! controller.py uses a function whith this name and arguments.
"""
#preprocess
y = slim.one_hot_encoding(y, num_classes)
#model
logits = classify(x, num_classes=num_classes, num_filter=num_filter, route=num_estimator, is_training=is_training, reuse=reuse)
#results
loss = tf.reduce_mean(softmax_cross_entropy(logits = logits, onehot_labels = y))
predictions = tf.argmax(slim.softmax(logits),1)
return loss, predictions
def rpn_losses(self):
with tf.variable_scope('rpn_losses'):
minibatch_indices, minibatch_anchor_matched_gtboxes, \
object_mask, minibatch_labels_one_hot = self.make_minibatch(self.anchors)
minibatch_anchors = tf.gather(self.anchors, minibatch_indices)
minibatch_encode_boxes = tf.gather(self.rpn_encode_boxes, minibatch_indices)
minibatch_boxes_scores = tf.gather(self.rpn_scores, minibatch_indices)
# encode gtboxes
minibatch_encode_gtboxes = encode_and_decode.encode_boxes(unencode_boxes=minibatch_anchor_matched_gtboxes,
reference_boxes=minibatch_anchors,
scale_factors=self.scale_factors)
positive_anchors_in_img = draw_box_with_color(self.img_batch,
minibatch_anchors * tf.expand_dims(object_mask, 1),
text=tf.shape(tf.where(tf.equal(object_mask, 1.0)))[0])
negative_mask = tf.cast(tf.logical_not(tf.cast(object_mask, tf.bool)), tf.float32)
negative_anchors_in_img = draw_box_with_color(self.img_batch,
minibatch_anchors * tf.expand_dims(negative_mask, 1),
text=tf.shape(tf.where(tf.equal(object_mask, 0.0)))[0])
minibatch_decode_boxes = encode_and_decode.decode_boxes(encode_boxes=minibatch_encode_boxes,
reference_boxes=minibatch_anchors,
scale_factors=self.scale_factors)
tf.summary.image('/positive_anchors', positive_anchors_in_img)
tf.summary.image('/negative_anchors', negative_anchors_in_img)
minibatch_boxes_softmax_scores = tf.gather(slim.softmax(self.rpn_scores), minibatch_indices)
top_k_scores, top_k_indices = tf.nn.top_k(minibatch_boxes_softmax_scores[:, 1], k=20)
top_k_boxes = tf.gather(minibatch_decode_boxes, top_k_indices)
top_detections_in_img = draw_boxes_with_scores(self.img_batch,
boxes=top_k_boxes,
scores=top_k_scores)
tf.summary.image('/top_20', top_detections_in_img)
temp_indices = tf.reshape(tf.where(tf.greater(top_k_scores, cfgs.FINAL_SCORE_THRESHOLD)), [-1])
rpn_predict_boxes = tf.gather(top_k_boxes, temp_indices)
rpn_predict_scores = tf.gather(top_k_scores, temp_indices)
# losses
with tf.variable_scope('rpn_location_loss'):
location_loss = losses.l1_smooth_losses(predict_boxes=minibatch_encode_boxes,
gtboxes=minibatch_encode_gtboxes,
object_weights=object_mask)
slim.losses.add_loss(location_loss) # add smooth l1 loss to losses collection
with tf.variable_scope('rpn_classification_loss'):
classification_loss = slim.losses.softmax_cross_entropy(logits=minibatch_boxes_scores,
onehot_labels=minibatch_labels_one_hot)
return location_loss, classification_loss, rpn_predict_boxes, rpn_predict_scores
def fast_rcnn_predict(self):
with tf.variable_scope('fast_rcnn_predict'):
fast_rcnn_softmax_scores = slim.softmax(self.fast_rcnn_scores) # [-1, num_classes+1]
fast_rcnn_encode_boxes = tf.reshape(self.fast_rcnn_encode_boxes, [-1, 5])
# reference_boxes = tf.tile(self.fast_rcnn_all_level_horizontal_proposals, [1, self.num_classes])
reference_boxes = tf.tile(self.fast_rcnn_all_level_rotate_proposals, [1, self.num_classes]) # [N, 5*num_classes]
reference_boxes = tf.reshape(reference_boxes, [-1, 5]) # [N*num_classes, 5]
fast_rcnn_decode_boxes = encode_and_decode.decode_boxes(encode_boxes=fast_rcnn_encode_boxes,
reference_boxes=reference_boxes,
scale_factors=self.scale_factors)
# mutilclass NMS
fast_rcnn_decode_boxes = tf.reshape(fast_rcnn_decode_boxes, [-1, self.num_classes*5])
fast_rcnn_decode_boxes, fast_rcnn_score, num_of_objects, detection_category = \
self.fast_rcnn_proposals(fast_rcnn_decode_boxes, scores=fast_rcnn_softmax_scores)
return fast_rcnn_decode_boxes, fast_rcnn_score, num_of_objects, detection_category
def mobilenet(inputs,
num_classes=1000,
is_training=True,
width_multiplier=1,
scope='MobileNet'):
""" MobileNet
More detail, please refer to Google's paper(https://arxiv.org/abs/1704.04861).
Args:
inputs: a tensor of size [batch_size, height, width, channels].
num_classes: number of predicted classes.
is_training: whether or not the model is being trained.
scope: Optional scope for the variables.
Returns:
logits: the pre-softmax activations, a tensor of size
[batch_size, `num_classes`]
end_points: a dictionary from components of the network to the corresponding
activation.
"""
def _depthwise_separable_conv(inputs,
num_pwc_filters,
width_multiplier,
sc,
downsample=False):
""" Helper function to build the depth-wise separable convolution layer.
"""
num_pwc_filters = round(num_pwc_filters * width_multiplier)
_stride = 2 if downsample else 1
# skip pointwise by setting num_outputs=None
depthwise_conv = slim.separable_convolution2d(inputs,
num_outputs=None,
stride=_stride,
depth_multiplier=1,
kernel_size=[3, 3],
scope=sc+'/depthwise_conv')
bn = slim.batch_norm(depthwise_conv, scope=sc+'/dw_batch_norm')
pointwise_conv = slim.convolution2d(bn,
num_pwc_filters,
kernel_size=[1, 1],
scope=sc+'/pointwise_conv')
bn = slim.batch_norm(pointwise_conv, scope=sc+'/pw_batch_norm')
return bn
with tf.variable_scope(scope) as sc:
end_points_collection = sc.name + '_end_points'
with slim.arg_scope([slim.convolution2d, slim.separable_convolution2d],
activation_fn=None,
outputs_collections=[end_points_collection]):
with slim.arg_scope([slim.batch_norm],
is_training=is_training,
activation_fn=tf.nn.relu,
fused=True):
net = slim.convolution2d(inputs, round(32 * width_multiplier), [3, 3], stride=2, padding='SAME', scope='conv_1')
net = slim.batch_norm(net, scope='conv_1/batch_norm')
net = _depthwise_separable_conv(net, 64, width_multiplier, sc='conv_ds_2')
net = _depthwise_separable_conv(net, 128, width_multiplier, downsample=True, sc='conv_ds_3')
net = _depthwise_separable_conv(net, 128, width_multiplier, sc='conv_ds_4')
net = _depthwise_separable_conv(net, 256, width_multiplier, downsample=True, sc='conv_ds_5')
net = _depthwise_separable_conv(net, 256, width_multiplier, sc='conv_ds_6')
net = _depthwise_separable_conv(net, 512, width_multiplier, downsample=True, sc='conv_ds_7')
net = _depthwise_separable_conv(net, 512, width_multiplier, sc='conv_ds_8')
net = _depthwise_separable_conv(net, 512, width_multiplier, sc='conv_ds_9')
net = _depthwise_separable_conv(net, 512, width_multiplier, sc='conv_ds_10')
net = _depthwise_separable_conv(net, 512, width_multiplier, sc='conv_ds_11')
net = _depthwise_separable_conv(net, 512, width_multiplier, sc='conv_ds_12')
net = _depthwise_separable_conv(net, 1024, width_multiplier, downsample=True, sc='conv_ds_13')
net = _depthwise_separable_conv(net, 1024, width_multiplier, sc='conv_ds_14')
net = slim.avg_pool2d(net, [7, 7], scope='avg_pool_15')
end_points = slim.utils.convert_collection_to_dict(end_points_collection)
net = tf.squeeze(net, [1, 2], name='SpatialSqueeze')
end_points['squeeze'] = net
logits = slim.fully_connected(net, num_classes, activation_fn=None, scope='fc_16')
predictions = slim.softmax(logits, scope='Predictions')
end_points['Logits'] = logits
end_points['Predictions'] = predictions
return logits, end_points
def fast_rcnn_loss(self):
with tf.variable_scope('fast_rcnn_loss'):
minibatch_indices, minibatch_reference_boxes_mattached_gtboxes, minibatch_object_mask, \
minibatch_label_one_hot = self.fast_rcnn_minibatch(self.fast_rcnn_all_level_rotate_proposals) #######################
# minibatch_reference_boxes = tf.gather(self.fast_rcnn_all_level_horizontal_proposals, minibatch_indices)
minibatch_reference_boxes = tf.gather(self.fast_rcnn_all_level_rotate_proposals, minibatch_indices)
minibatch_encode_boxes = tf.gather(self.fast_rcnn_encode_boxes,
minibatch_indices) # [minibatch_size, num_classes*5]
minibatch_scores = tf.gather(self.fast_rcnn_scores, minibatch_indices)
positive_proposals_in_img = draw_box_with_color(self.img_batch,
minibatch_reference_boxes * tf.expand_dims(
minibatch_object_mask, 1),
text=tf.shape(tf.where(tf.equal(minibatch_object_mask, 1.0)))[0])
negative_mask = tf.cast(tf.logical_not(tf.cast(minibatch_object_mask, tf.bool)), tf.float32)
negative_proposals_in_img = draw_box_with_color(self.img_batch,
minibatch_reference_boxes * tf.expand_dims(negative_mask, 1),
text=tf.shape(tf.where(tf.equal(minibatch_object_mask, 0.0)))[0])
tf.summary.image('/positive_proposals', positive_proposals_in_img)
tf.summary.image('/negative_proposals', negative_proposals_in_img)
minibatch_decode_boxes = encode_and_decode.decode_boxes(encode_boxes=minibatch_encode_boxes,
reference_boxes=minibatch_reference_boxes,
scale_factors=self.scale_factors)
minibatch_softmax_scores = tf.gather(slim.softmax(self.fast_rcnn_scores), minibatch_indices)
top_k_scores, top_k_indices = tf.nn.top_k(minibatch_softmax_scores[:, 1], k=5)
top_detections_in_img = draw_boxes_with_scores(self.img_batch,
boxes=tf.gather(minibatch_decode_boxes, top_k_indices),
scores=top_k_scores)
tf.summary.image('/top_5', top_detections_in_img)
# encode gtboxes
minibatch_encode_gtboxes = \
encode_and_decode.encode_boxes(
unencode_boxes=minibatch_reference_boxes_mattached_gtboxes,
reference_boxes=minibatch_reference_boxes,
scale_factors=self.scale_factors)
# [minibatch_size, num_classes*5]
minibatch_encode_gtboxes = tf.tile(minibatch_encode_gtboxes, [1, self.num_classes])
class_weights_list = []
category_list = tf.unstack(minibatch_label_one_hot, axis=1)
for i in range(1, self.num_classes+1):
tmp_class_weights = tf.ones(shape=[tf.shape(minibatch_encode_boxes)[0], 5], dtype=tf.float32)
tmp_class_weights = tmp_class_weights * tf.expand_dims(category_list[i], axis=1)
class_weights_list.append(tmp_class_weights)
class_weights = tf.concat(class_weights_list, axis=1) # [minibatch_size, num_classes*5]
# loss
with tf.variable_scope('fast_rcnn_classification_loss'):
fast_rcnn_classification_loss = slim.losses.softmax_cross_entropy(logits=minibatch_scores,
onehot_labels=minibatch_label_one_hot)
# if DEBUG:
# print_tensors(minibatch_scores, 'minibatch_scores')
# print_tensors(classification_loss, '2nd_cls_loss')
with tf.variable_scope('fast_rcnn_location_loss'):
fast_rcnn_location_loss = losses.l1_smooth_losses(predict_boxes=minibatch_encode_boxes,
gtboxes=minibatch_encode_gtboxes,
object_weights=minibatch_object_mask,
classes_weights=class_weights)
slim.losses.add_loss(fast_rcnn_location_loss)
return fast_rcnn_location_loss, fast_rcnn_classification_loss
