def inception_v2_ssd(img):
with slim.arg_scope(inception_v2.inception_v2_arg_scope()):
logits, end_point = inception_v2.inception_v2_base(img)
c1 = end_point['Mixed_3c']
c2 = end_point['Mixed_4e']
c3 = end_point['Mixed_5c']
return c1, c2, c3
def test_inception_v2(img_dir):
"""
Test Inception-V2 with a single image.
:param img_dir: Path of the image to be classified
:return: classification result and probability of a single image
"""
img = cv2.imread(img_dir)
img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
img = cv2.resize(img, (224, 224)) / 255
img = img.reshape((1, 224, 224, 3))
tf.reset_default_graph()
inputs = tf.placeholder(name='input_images',
shape=[None, 224, 224, 3],
dtype=tf.float32)
with slim.arg_scope(inception_v2_arg_scope()):
_, _ = inception_v2(inputs, 1001, is_training=False)
with tf.Session() as sess:
tf.train.Saver().restore(sess, './models/inception_v2.ckpt')
inputs = sess.graph.get_tensor_by_name('input_images:0')
outputs = sess.graph.get_tensor_by_name(
'InceptionV2/Logits/SpatialSqueeze:0')
pred = tf.argmax(tf.nn.softmax(outputs), axis=1)[0]
prob = tf.reduce_max(tf.nn.softmax(outputs), axis=1)[0]
pred, prob = sess.run([pred, prob], feed_dict={inputs: img})
name = label_dict[pred]
print('Result of Inception-V2:', name, prob)
return name, prob
def inception_v2_ssd(img):
with slim.arg_scope(inception_v2.inception_v2_arg_scope()):
logits, end_point = inception_v2.inception_v2_base(img)
vbs = slim.get_variables_to_restore()
c1 = end_point['Mixed_3c']
c2 = end_point['Mixed_4e']
c3 = end_point['Mixed_5c']
return c1, c2, c3, vbs
def inception_v2_ssd(img,cfg):
with slim.arg_scope(inception_v2.inception_v2_arg_scope()):
logits, end_point = inception_v2.inception_v2_base(img)
Mixed_3c = end_point['Mixed_3c']
Mixed_4e = end_point['Mixed_4e']
cell_11 = end_point['Mixed_5c']
vbs = slim.get_trainable_variables()
cell_11 = tf.image.resize_bilinear(cell_11,size=[32,32])
cell_11 = tf.concat([cell_11,Mixed_4e],axis=3)
cell_7 = tf.image.resize_bilinear(Mixed_4e,size=[64,64])
cell_7 = tf.concat([cell_7,Mixed_3c],axis=3)
cell_11 = slim.conv2d(cell_11,1024,kernel_size=1,activation_fn=slim.nn.relu)
cell_7 = slim.conv2d(cell_7, 512, kernel_size=3, activation_fn=slim.nn.relu)
cell_7 = slim.conv2d(cell_7, 256, kernel_size=1, activation_fn=slim.nn.relu)
cv6 = slim.conv2d(cell_11, 1024, kernel_size=3, rate=6, activation_fn=slim.nn.relu, scope='conv6')
cv7 = slim.conv2d(cv6, 1024, kernel_size=1, activation_fn=slim.nn.relu, scope='conv7')
s = utils.normalize_to_target(cell_7, target_norm_value=12.0, dim=1)
cv8 = slim.conv2d(cv7, 256, kernel_size=1, stride=1, scope='conv8_0')
cv8 = slim.conv2d(cv8, 512, kernel_size=3, stride=2, scope='conv8_1')
cv9 = slim.conv2d(cv8, 128, kernel_size=1, stride=1, scope='conv9_0')
cv9 = slim.conv2d(cv9, 256, kernel_size=3, stride=2, scope='conv9_1')
cv10 = slim.conv2d(cv9, 128, kernel_size=1, stride=1, scope='conv10_0')
cv10 = slim.conv2d(cv10, 256, kernel_size=3, stride=2, scope='conv10_1')
cv11 = slim.conv2d(cv10, 128, kernel_size=1, stride=1, scope='conv11_0')
cv11 = slim.conv2d(cv11, 256, kernel_size=3, stride=2, scope='conv11_1')
source = [s, cv7, cv8, cv9, cv10, cv11]
conf = []
loc = []
for cv, num in zip(source, cfg.Config['aspect_num']):
print(num)
loc.append(slim.conv2d(cv, num * 4, kernel_size=3, stride=1, activation_fn=None))
conf.append(
slim.conv2d(cv, num * cfg.Config['num_classes'], kernel_size=3, stride=1, activation_fn=None))
print(loc)
loc = tf.concat([tf.reshape(o, shape=(cfg.batch_size, -1, 4)) for o in loc], axis=1)
conf = tf.concat([tf.reshape(o, shape=(cfg.batch_size, -1, cfg.Config['num_classes'])) for o in conf],
axis=1)
return loc, conf, vbs
def inception_v2_ssd(img,cfg):
with slim.arg_scope(inception_v2.inception_v2_arg_scope()):
logits, end_point = inception_v2.inception_v2_base(img)
Mixed_3c = end_point['Mixed_3c']
Mixed_4e = end_point['Mixed_4e']
Mixed_5c = end_point['Mixed_5c']
vbs = slim.get_trainable_variables()
#vbs = None
cell_11 = tf.image.resize_bilinear(Mixed_5c,size=[int(32*(cfg.image_size/512)),int(32*(cfg.image_size/512))])
cell_11 = tf.concat([cell_11,Mixed_4e],axis=3)
cell_7 = tf.image.resize_bilinear(Mixed_4e,size=[int(64*(cfg.image_size/512)),int(64*(cfg.image_size/512))])
cell_7 = tf.concat([cell_7,Mixed_3c],axis=3)
mask_fp = get_mask_fp(Mixed_3c ,Mixed_4e,Mixed_5c)
cell_11 = slim.conv2d(cell_11,1024,kernel_size=1,activation_fn=slim.nn.relu)
cell_7 = slim.conv2d(cell_7, 512, kernel_size=3, activation_fn=slim.nn.relu)
cell_7 = slim.conv2d(cell_7, 256, kernel_size=1, activation_fn=slim.nn.relu)
cv6 = slim.conv2d(cell_11, 1024, kernel_size=3, rate=6, activation_fn=slim.nn.relu, scope='conv6')
cv7 = slim.conv2d(cv6, 1024, kernel_size=1, activation_fn=slim.nn.relu, scope='conv7')
s = utils.normalize_to_target(cell_7, target_norm_value=cfg.norm_value, dim=1)
cv8 = inception(cv7, out_put=512, name='cv8', stride=2)
cv9 = inception(cv8, out_put=256, name='cv9', stride=2)
cv10 = inception(cv9, out_put=256, name='cv10', stride=2)
cv11 = inception(cv10, out_put=256,name= 'cv11', stride=2)
source = [s, cv7, cv8, cv9, cv10, cv11]
conf = []
loc = []
for cv, num in zip(source, cfg.Config['aspect_num']):
loc.append(slim.conv2d(cv, num * 4, kernel_size=3, stride=1, activation_fn=None))
conf.append(
slim.conv2d(cv, num * cfg.Config['num_classes'], kernel_size=3, stride=1, activation_fn=None))
loc = tf.concat([tf.reshape(o, shape=(cfg.batch_size, -1, 4)) for o in loc], axis=1)
conf = tf.concat([tf.reshape(o, shape=(cfg.batch_size, -1, cfg.Config['num_classes'])) for o in conf],
axis=1)
return loc, conf,mask_fp, vbs
def model(img):
with slim.arg_scope(inception_v2.inception_v2_arg_scope()):
with slim.arg_scope([slim.batch_norm], is_training=True):
with slim.arg_scope([slim.conv2d], trainable=True):
logits, end_point = inception_v2.inception_v2_base(img)
c1 = end_point['Mixed_3c']
c2 = end_point['Mixed_4e']
c3 = end_point['Mixed_5c']
vbs = slim.get_variables_to_restore()
c3 = slim.conv2d(c3, 256, 1, 1, activation_fn=None)
c2 = slim.conv2d(c2, 256, 1, 1,
activation_fn=None) + tf.image.resize_bilinear(
c3, size=tf.shape(c2)[1:3])
c1 = slim.conv2d(c1, 256, 1, 1,
activation_fn=None) + tf.image.resize_bilinear(
c2, size=tf.shape(c1)[1:3])
return c1, c2, c3, vbs
'shape': [1, 224, 224, 3],
'scope': resnet_v2.resnet_arg_scope(),
'net': resnet_v2.resnet_v2_152,
'num_classes': 1001,
'end_point': 'global_pool'
},
'inception_v1': {
'shape': [1, 224, 224, 3],
'scope': inception_v1.inception_v1_arg_scope(),
'net': inception_v1.inception_v1,
'num_classes': 1000,
'end_point': 'AvgPool_0a_7x7'
},
'inception_v2': {
'shape': [1, 224, 224, 3],
'scope': inception_v2.inception_v2_arg_scope(),
'net': inception_v2.inception_v2,
'num_classes': 1000
},
'inception_v3': {
'shape': [1, 299, 299, 3],
'scope': inception_v3.inception_v3_arg_scope(),
'net': inception_v3.inception_v3,
'num_classes': 1000
},
'vgg_16': {
'shape': [1, 224, 224, 3],
'scope': vgg.vgg_arg_scope(),
'net': vgg.vgg_16,
'num_classes': 1000
},
def compute_feature_of_batch_ts_with_cnn(file_path_of_ts, file_path_of_feature,
cnn_model_name,
file_path_of_pretrained_model):
r'''
compute feature of somme time series with pretrained CNN
:param file_path_of_ts: file path of time series
:param file_path_of_feature: file path of saving feature
:param cnn_model_name: name of CNN model
:param file_path_of_pretrained_model: file path of pretrained CNN
:return: ''
'''
#tf.reset_default_graph()
#read data
data = pd.read_csv(file_path_of_ts)
#data=data.sample(20)
#change dataframe to list
id_list = data.iloc[:, 0].tolist()
data_list = change_dataframe_to_dict_(data)
model = cnn_model_name
checkpoint_file = file_path_of_pretrained_model
# I only have these because I thought some take in size of (299,299), but maybe not
if 'inception' in model: height, width, channels = 224, 224, 3
if 'resnet' in model: height, width, channels = 224, 224, 3
if 'vgg' in model: height, width, channels = 224, 224, 3
if model == 'inception_resnet_v2': height, width, channels = 299, 299, 3
x = tf.placeholder(tf.float32, shape=(1, height, width, channels))
# load up model specific stuff
if model == 'inception_v1':
#from inception_v1 import *
from nets import inception_v1
arg_scope = inception_v1.inception_v1_arg_scope()
with slim.arg_scope(arg_scope):
logits, end_points = inception_v1.inception_v1(x,
is_training=False,
num_classes=None)
features = end_points['AvgPool_0a_7x7']
# print('logits')
# print(logits.shape)
# print('features')
# print(features.shape)
elif model == 'inception_v2':
#from inception_v2 import *
from nets import inception_v2
arg_scope = inception_v2.inception_v2_arg_scope()
with slim.arg_scope(arg_scope):
logits, end_points = inception_v2(x,
is_training=False,
num_classes=None)
features = end_points['AvgPool_1a']
elif model == 'inception_v3':
#from inception_v3 import *
from nets import inception_v3
arg_scope = inception_v3.inception_v3_arg_scope()
with slim.arg_scope(arg_scope):
logits, end_points = inception_v3(x,
is_training=False,
num_classes=None)
features = end_points['AvgPool_1a']
elif model == 'inception_resnet_v2':
#from inception_resnet_v2 import *
from nets import inception_resnet_v2
arg_scope = inception_resnet_v2.inception_resnet_v2_arg_scope()
with slim.arg_scope(arg_scope):
logits, end_points = inception_resnet_v2(x,
is_training=False,
num_classes=1001)
features = end_points['PreLogitsFlatten']
elif model == 'resnet_v1_50':
#from resnet_v1 import *
from nets import resnet_v1
arg_scope = resnet_v1.resnet_arg_scope()
with slim.arg_scope(arg_scope):
logits, end_points = resnet_v1.resnet_v1_50(x,
is_training=False,
num_classes=1000)
features = end_points['global_pool']
elif model == 'resnet_v1_101':
#from resnet_v1 import *
from nets import resnet_v1
arg_scope = resnet_v1.resnet_arg_scope()
with slim.arg_scope(arg_scope):
logits, end_points = resnet_v1.resnet_v1_101(x,
is_training=False,
num_classes=1000)
features = end_points['global_pool']
elif model == 'vgg_16':
#from vgg import *
from nets import vgg
arg_scope = vgg.vgg_arg_scope()
with slim.arg_scope(arg_scope):
logits, end_points = vgg.vgg_16(x, is_training=False)
features = end_points['vgg_16/fc8']
elif model == 'vgg_19':
#from vgg import *
from nets import vgg
arg_scope = vgg.vgg_arg_scope()
with slim.arg_scope(arg_scope):
logits, end_points = vgg.vgg_19(x, is_training=False)
features = end_points['vgg_19/fc8']
#cpu_config = tf.ConfigProto(intra_op_parallelism_threads = 8, inter_op_parallelism_threads = 8, device_count = {'CPU': 3})
#sess = tf.Session(config = cpu_config)
sess = tf.Session()
saver = tf.train.Saver()
saver.restore(sess, checkpoint_file)
feature_list = []
count_temp = 0
for i in range(len(data_list)):
count_temp = count_temp + 1
#imaging ts
ts_dict = data_list[i]
ts = ts_dict['ts']
id = ts_dict['id']
new_ts = min_max_transform(ts)
normalized = np.array(new_ts)
fig, ax = plt.subplots()
#plt.imshow(recurrence_plot.rec_plot(normalized), cmap=plt.cm.gray)
plt.imshow(recurrence_plot.rec_plot(normalized))
ax.set_xticks([])
ax.set_yticks([])
#print(id)
path = "inception-v1/" + id + ".jpg"
plt.savefig(path)
plt.close(fig)
#compute feature
# #begin to compute features
image = misc.imread(path)
#from matplotlib.pyplot import imread
#image=imread(path)
# print('image')
# print(image.size)
image = misc.imresize(image, (height, width))
image = np.expand_dims(image, 0)
feature = np.squeeze(sess.run(features, feed_dict={x: image}))
feature_list.append(feature)
# print('feature-test')
# print(feature)
os.remove(path)
if count_temp % 100 == 0:
print(count_temp)
#begin to process parellel result and write_to_csv
feature_array = np.array(feature_list)
feature_df = pd.DataFrame(feature_array)
# print(feature_df.shape)
# print(len(id_list))
#add id
feature_df.insert(loc=0, column='id', value=id_list)
# print(feature_final_df.shape)
# print(feature_final_df.head())
feature_df.to_csv(file_path_of_feature, index=False)
gc.collect()
n_classes = 101
n_test_data = len(testing_set)
Size = 224
Height = Width = Size
batchsize = 1
conf = cf.configuration(batchsize, data_list, label_list)
# define variable
with tf.name_scope('input_data'):
x = tf.placeholder(tf.float32, [None, Height, Width, 3], name='x1')
y = tf.placeholder(tf.int32, [None], name='y')
y_onehot = tf.one_hot(y, n_classes, name='label')
slim = tf.contrib.slim
with slim.arg_scope(net.inception_v2_arg_scope()) as sc:
_, end_points = net.inception_v2(x,
num_classes=101,
is_training=False,
reuse=None)
init_cnn = slim.assign_from_checkpoint_fn('pass/to/save/model.ckpt',
slim.get_model_variables())
logits = end_points['Logits']
with tf.name_scope('accuracy'):
pred = tf.nn.softmax(logits, 1)
pred_restore = tf.placeholder(pred.dtype, pred.shape)
correct_pred = tf.equal(tf.argmax(pred_restore, 1), tf.argmax(y_onehot, 1))
accuracy = tf.reduce_mean(tf.cast(correct_pred, tf.float32))
def main():
#-------------解析参数-------------#
args = parse_args()
if args.cfg_file is not None:
cfg_from_file(args.cfg_file) #读取args.cfg_file文件内容并融合到cfg中
pprint.pprint(cfg)
#-------------任务相关配置-------------#
tf.logging.set_verbosity(tf.logging.INFO) #设置日志级别
os.environ['CUDA_VISBLE_DEVICES'] = cfg.GPUS
tf.logging.set_verbosity(tf.logging.INFO) #设置日志级别
#-------------搭建计算图-------------#
# 读取数据,tsn_batch形式：(batch_size*num_seg*new_length) * h * w * num_channels
with tf.device('/cpu:0'):
# 简单计算放在CPU上进行
ite = TSNDataReader(
cfg.INPUT.DATA_DIR,
cfg.INPUT.MODALITY, # flow模态读取方式与rgb稍有不同
cfg.INPUT.NUM_SEGMENTS,
cfg.INPUT.NEW_LENGTH,
cfg.INPUT.SPLIT_PATH,
cfg.TRAIN.BATCH_SIZE,
isTraining=False).get_dataset_iter()
# 读取数据,tsn_batch形式：(batch_size*num_seg*new_length) * h * w * num_channels
tsn_batch, labels = ite.get_next()
if cfg.INPUT.MODALITY == 'rgb':
tsn_batch = tf.reshape(tsn_batch, [
cfg.TRAIN.BATCH_SIZE * cfg.INPUT.NUM_SEGMENTS *
cfg.INPUT.NEW_LENGTH, 224, 224, 3
])
elif cfg.INPUT.MODALITY == 'flow':
tsn_batch = tf.reshape(tsn_batch, [
cfg.TRAIN.BATCH_SIZE * cfg.INPUT.NUM_SEGMENTS *
cfg.INPUT.NEW_LENGTH, 224, 224, 2
])
else:
raise ValueError("modality must be one of rgb or flow")
# 获取网络， 并完成前传
with slim.arg_scope(inception_v2_arg_scope()):
logits, _ = inception_v2(tsn_batch,
num_classes=cfg.NUM_CLASSES,
is_training=False,
dropout_keep_prob=cfg.TRAIN.DROPOUT_KEEP_PROB,
min_depth=16,
depth_multiplier=1.0,
prediction_fn=slim.softmax,
spatial_squeeze=True,
reuse=None,
scope='InceptionV2',
global_pool=False)
logits = tf.reshape(logits, [
cfg.TRAIN.BATCH_SIZE, cfg.INPUT.NUM_SEGMENTS * cfg.INPUT.NEW_LENGTH, -1
])
logits = tf.reduce_mean(logits, 1) # 取采样图片输出的平均值
# 做一个batch准确度的预测
prediction = tf.nn.softmax(logits)
acc_batch = tf.reduce_mean(
tf.cast(tf.equal(tf.argmax(prediction, 1), tf.argmax(labels, 1)),
tf.float32))
# saver
model_variables_map = {}
for variable in tf.global_variables():
if variable.name.split('/')[0] == 'InceptionV2' and variable.name.find(
'Conv2d_1c_1x1') == -1:
model_variables_map[variable.name.replace(':0', '')] = variable
print '####################################################'
for i in model_variables_map.keys():
print i
print '#####################################################'
saver = tf.train.Saver(var_list=model_variables_map)
with tf.Session() as sess:
#初始化变量
tf.global_variables_initializer().run()
saver.restore(sess, 'models/tsn_rgb_bk_v1.ckpt-4401')
acc = []
sess.graph.finalize()
for i in range(200):
try:
print 'testing the %dth vid' % i
prediction = sess.run(acc_batch)
print prediction
acc.append(prediction)
except:
continue
acc = np.mean(acc)
print "the accu is %f" % acc
def main():
#-------------解析参数-------------#
args = _parse_args()
if args.cfg_file is not None:
cfg_from_file(args.cfg_file) #读取args.cfg_file文件内容并融合到cfg中
pprint.pprint(cfg)
#-------------任务相关配置-------------#
os.environ["CUDA_DEVICE_ORDER"] = "PCI_BUS_ID"
os.environ['CUDA_VISBLE_DEVICES'] = cfg.GPUS
tf.logging.set_verbosity(tf.logging.INFO) #设置日志级别
#-------------搭建计算图-------------#
with tf.device('/cpu:0'):
# 操作密集型放在CPU上进行
global_step = tf.get_variable('global_step', [],
dtype=None,
initializer=tf.constant_initializer(0),
trainable=False)
lr = tf.train.exponential_decay(cfg.TRAIN.LEARNING_RATE_BASE,
global_step,
cfg.TRAIN.DECAY_STEP,
cfg.TRAIN.DECAY_RATE,
staircase=True) # 学习率
tf.summary.scalar('learnrate', lr)
opt = tf.train.MomentumOptimizer(lr, cfg.TRAIN.MOMENTUM) # 优化函数
#opt = tf.train.GradientDescentOptimizer(lr) # 优化函数
num_gpus = len(cfg.GPUS.split(','))
# 建立dataset，获取iterator
reader.set_param(
cfg.INPUT.DATA_DIR,
cfg.INPUT.MODALITY, # flow模态读取方式与rgb稍有不同
cfg.VALID.SPLIT_PATH,
cfg.VALID.BATCH_SIZE,
num_segments=cfg.INPUT.NUM_SEGMENTS,
new_length=cfg.INPUT.NEW_LENGTH,
train_split_path=cfg.INPUT.SPLIT_PATH,
train_batch_size=cfg.TRAIN.BATCH_SIZE,
isTraining=True)
ite_train, ite_valid = reader.get_dataset_iter()
tsn_batch, label_batch = ite_train.get_next()
tsn_batch_splits = tf.split(tsn_batch,
num_or_size_splits=num_gpus,
axis=0)
label_batch_splits = tf.split(label_batch,
num_or_size_splits=num_gpus,
axis=0)
tsn_valid_batch, label_valid_batch = ite_valid.get_next()
# 在GPU上运行训练（并行）
tower_grads = []
with tf.variable_scope(tf.get_variable_scope(
)) as vscope: # 见https://github.com/tensorflow/tensorflow/issues/6220
for i in range(num_gpus):
with tf.device('/gpu:%d' % i), tf.name_scope('GPU_%d' %
i) as scope:
# 获取数据,tsn_batch形式：(batch_size/num_gpus*num_seg*new_length) * h * w * num_channels
tsn_batch_split, label_batch_split = tsn_batch_splits[
i], label_batch_splits[i]
if cfg.INPUT.MODALITY == 'rgb':
tsn_batch_split = tf.reshape(tsn_batch_split, [
cfg.TRAIN.BATCH_SIZE / num_gpus *
cfg.INPUT.NUM_SEGMENTS * cfg.INPUT.NEW_LENGTH, 224,
224, 3
])
elif cfg.INPUT.MODALITY == 'flow':
tsn_batch_split = tf.reshape(tsn_batch_split, [
cfg.TRAIN.BATCH_SIZE / num_gpus *
cfg.INPUT.NUM_SEGMENTS * cfg.INPUT.NEW_LENGTH, 224,
224, 2
])
else:
raise ValueError("modality must be one of rgb or flow")
# 获取网络，并完成前传
with slim.arg_scope(inception_v2_arg_scope()):
logits, _ = inception_v2(
tsn_batch_split,
num_classes=cfg.NUM_CLASSES,
is_training=True,
dropout_keep_prob=cfg.TRAIN.DROPOUT_KEEP_PROB,
min_depth=16,
depth_multiplier=1.0,
prediction_fn=slim.softmax,
spatial_squeeze=True,
reuse=None,
scope='InceptionV2',
global_pool=False)
tf.get_variable_scope().reuse_variables()
logits = tf.reshape(logits, [
cfg.TRAIN.BATCH_SIZE / num_gpus,
cfg.INPUT.NUM_SEGMENTS * cfg.INPUT.NEW_LENGTH, -1
]) #tsn的特殊性决定
logits = tf.reduce_mean(logits, 1) # 取采样图片输出的平均值
# 做一个batch准确度的预测
prediction = tf.nn.softmax(logits)
acc_batch = tf.reduce_mean(
tf.cast(
tf.equal(tf.argmax(prediction, 1),
tf.argmax(label_batch_split, 1)), tf.float32))
tf.summary.scalar('acc_on_batch', acc_batch)
# 求loss
for variable in tf.global_variables():
if variable.name.find(
'weights'
) > 0: # 把参数w加入集合tf.GraphKeys.WEIGHTS，方便做正则化(此句必须放在正则化之前)
tf.add_to_collection(tf.GraphKeys.WEIGHTS, variable)
loss = tsn_loss(logits, label_batch_split, regularization=True)
tf.summary.scalar('loss', loss)
# 计算梯度，并由tower_grads收集
grads_and_vars = opt.compute_gradients(
loss, var_list=tf.trainable_variables(
)) # (gradient, variable)组成的列表
tower_grads.append(grads_and_vars)
grads_and_vars = average_gradients(tower_grads) # 求取各GPU平均梯度
train_step = opt.apply_gradients(grads_and_vars, global_step=global_step)
# 在GPU上运行验证（串行）
with tf.variable_scope(tf.get_variable_scope(
)) as vscope: # 见https://github.com/tensorflow/tensorflow/issues/6220
with tf.device('/gpu:0'), tf.name_scope('VALID') as scope:
tf.get_variable_scope().reuse_variables()
if cfg.INPUT.MODALITY == 'rgb':
tsn_valid_batch = tf.reshape(
tsn_valid_batch, [cfg.VALID.BATCH_SIZE * 25, 224, 224, 3])
elif cfg.INPUT.MODALITY == 'flow':
tsn_valid_batch = tf.reshape(
tsn_valid_batch, [cfg.VALID.BATCH_SIZE * 25, 224, 224, 2])
else:
raise ValueError("modality must be one of rgb or flow")
with slim.arg_scope(inception_v2_arg_scope()):
logits_valid, _ = inception_v2(
tsn_valid_batch,
num_classes=cfg.NUM_CLASSES,
is_training=False,
dropout_keep_prob=cfg.TRAIN.DROPOUT_KEEP_PROB,
min_depth=16,
depth_multiplier=1.0,
prediction_fn=slim.softmax,
spatial_squeeze=True,
reuse=None,
scope='InceptionV2',
global_pool=False)
logits_valid = tf.reshape(
logits_valid, [cfg.VALID.BATCH_SIZE, 25, -1]) #tsn的特殊性决定
logits_valid = tf.reduce_mean(logits_valid, 1) # 取采样图片输出的平均值
# 做一个batch准确度的预测
prediction_valid = tf.nn.softmax(logits_valid)
acc_valid_batch = tf.reduce_mean(
tf.cast(
tf.equal(tf.argmax(prediction_valid, 1),
tf.argmax(label_valid_batch, 1)), tf.float32))
merged = tf.summary.merge_all()
# saver
model_variables_map = {}
for variable in tf.global_variables():
if variable.name.split('/')[0] == 'InceptionV2' and variable.name.find(
'Conv2d_1c_1x1') == -1 and variable.name.find(
'Momentum') == -1:
model_variables_map[variable.name.replace(':0', '')] = variable
print '####################################################'
for i in model_variables_map.keys():
print i
print '#####################################################'
saver_model = tf.train.Saver(
var_list=model_variables_map,
max_to_keep=20) #不加载'InceptionV2/Logits/Conv2d_1c_1x1/'下的参数
#-------------启动Session-------------#
# (预测验证集，求取精度)
gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.8)
config = tf.ConfigProto(gpu_options=gpu_options, allow_soft_placement=True)
with tf.Session(config=config) as sess:
run_options = tf.RunOptions(trace_level=tf.RunOptions.FULL_TRACE)
run_metadata = tf.RunMetadata()
joint_writer = tf.summary.FileWriter(cfg.SUMMARY_DIR, sess.graph)
summary_writer = tf.summary.FileWriter(cfg.SUMMARY_DIR, sess.graph)
#初始化变量(或加载pretrained models)
tf.global_variables_initializer().run()
saver_model.restore(sess, cfg.TRAIN.PRETRAINED_MODEL_NAME)
sess.graph.finalize()
start_time = time.time()
for i in range(cfg.TRAIN.MAX_ITE):
_, learnrate, loss_value, step, summary = sess.run(
[train_step, lr, loss, global_step, merged],
options=run_options,
run_metadata=run_metadata)
if i == 0:
start_time = time.time()
if i % 10 == 0:
if i >= 1:
end_time = time.time()
avg_time = (end_time - start_time) / float(i + 1)
print("Average time consumed per step is %0.2f secs." %
avg_time)
print(
"After %d training step(s), learning rate is %g, loss on training batch is %g."
% (step, learnrate, loss_value))
# 每个epoch验证一次，保存模型
if i % 100 == 0:
print '#############################################'
print 'valid and save model'
accs = []
num = 0
for j in range(849):
num += 1
acc = sess.run(acc_valid_batch)
accs.append(acc)
print num
acc_valid = np.mean(np.array(accs))
print 'accuracy on validation set is %0.4f' % acc_valid
print 'saving model...'
saver_model.save(sess,
cfg.TRAIN.SAVED_MODEL_PATTERN,
global_step=global_step)
print 'successfully saved !'
print '#############################################'
joint_writer.add_run_metadata(run_metadata, 'step%03d' % i)
summary_writer.add_summary(summary, i)
end_time = time.time()
#print '%dth time step,consuming %f secs'%(i, start_time-end_time)
summary_writer.close()
