标签:conv pooling channels tf shape cnn tensorflow out 3d
def CNN_3d(x, out_channels_0, out_channels_1, add_relu=True):
'''Add a 3d convlution layer with relu and max pooling layer.
Args:
x: a tensor with shape [batch, in_depth, in_height, in_width, in_channels]
out_channels: a number
filter_size: a number
pooling_size: a number
Returns:
a flattened tensor with shape [batch, num_features]
Raises:
'''
in_channels = x.shape[-1]
weights_0 = tf.get_variable(
name='filter_0',
shape=[3, 3, 3, in_channels, out_channels_0],
dtype=tf.float32,
initializer=tf.random_uniform_initializer(-0.01, 0.01))
bias_0 = tf.get_variable(
name='bias_0',
shape=[out_channels_0],
dtype=tf.float32,
initializer=tf.zeros_initializer())
conv_0 = tf.nn.conv3d(x, weights_0, strides=[1, 1, 1, 1, 1], padding="SAME")
print('conv_0 shape: %s' %conv_0.shape)
conv_0 = conv_0 + bias_0
if add_relu:
conv_0 = tf.nn.elu(conv_0)
pooling_0 = tf.nn.max_pool3d(
conv_0,
ksize=[1, 3, 3, 3, 1],
strides=[1, 3, 3, 3, 1],
padding="SAME")
print('pooling_0 shape: %s' %pooling_0.shape)
#layer_1
weights_1 = tf.get_variable(
name='filter_1',
shape=[3, 3, 3, out_channels_0, out_channels_1],
dtype=tf.float32,
initializer=tf.random_uniform_initializer(-0.01, 0.01))
bias_1 = tf.get_variable(
name='bias_1',
shape=[out_channels_1],
dtype=tf.float32,
initializer=tf.zeros_initializer())
conv_1 = tf.nn.conv3d(pooling_0, weights_1, strides=[1, 1, 1, 1, 1], padding="SAME")
print('conv_1 shape: %s' %conv_1.shape)
conv_1 = conv_1 + bias_1
if add_relu:
conv_1 = tf.nn.elu(conv_1)
pooling_1 = tf.nn.max_pool3d(
conv_1,
ksize=[1, 3, 3, 3, 1],
strides=[1, 3, 3, 3, 1],
padding="SAME")
print('pooling_1 shape: %s' %pooling_1.shape)
return tf.contrib.layers.flatten(pooling_1)
调用比如CNN_3d(x, 32, 16)
其中输入x是一个类似[batch_size,9,50,50,12]
则输出是[batch_size,576]
标签:conv,pooling,channels,tf,shape,cnn,tensorflow,out,3d 来源: https://blog.csdn.net/guotong1988/article/details/100728970
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