def hourglass_20(channel_means, channel_stds, bgr_ordering):
"""The Hourglass-20 backbone for CenterNet."""
network = hourglass_network.hourglass_20(num_channels=128)
return CenterNetHourglassFeatureExtractor(
network, channel_means=channel_means, channel_stds=channel_stds,
bgr_ordering=bgr_ordering)
def _get_deepmac_network_by_type(name, num_init_channels, mask_size=None):
"""Get DeepMAC network model given a string type."""
if name.startswith('hourglass'):
if name == 'hourglass10':
return hourglass_network.hourglass_10(num_init_channels,
initial_downsample=False)
elif name == 'hourglass20':
return hourglass_network.hourglass_20(num_init_channels,
initial_downsample=False)
elif name == 'hourglass32':
return hourglass_network.hourglass_32(num_init_channels,
initial_downsample=False)
elif name == 'hourglass52':
return hourglass_network.hourglass_52(num_init_channels,
initial_downsample=False)
elif name == 'hourglass100':
return hourglass_network.hourglass_100(num_init_channels,
initial_downsample=False)
elif name == 'hourglass20_uniform_size':
return hourglass_network.hourglass_20_uniform_size(
num_init_channels)
elif name == 'hourglass20_no_shortcut':
return hourglass_network.hourglass_20_no_shortcut(
num_init_channels)
elif name == 'fully_connected':
if not mask_size:
raise ValueError('Mask size must be set.')
return FullyConnectedMaskHead(num_init_channels, mask_size)
elif name == 'embedding_projection':
return tf.keras.layers.Lambda(lambda x: x)
elif name.startswith('resnet'):
return ResNetMaskNetwork(name, num_init_channels)
raise ValueError('Unknown network type {}'.format(name))
def test_hourglass_20(self):
net = hourglass.hourglass_20(2, downsample=False)
self.assertEqual(hourglass.hourglass_depth(net), 20)
outputs = net(tf.zeros((2, 32, 32, 3)))
self.assertEqual(outputs[0].shape, (2, 32, 32, 4))
def test_hourglass_20(self):
net = hourglass.hourglass_20(2)
self.assertEqual(hourglass.hourglass_depth(net), 20)