def __init__(self, num_classes):
super(SSD, self).__init__()
self.arch = 'ssd300'
self.num_classes = num_classes
self.vgg16_conv4, self.vgg16_conv7 = create_vgg16_layers()
self.batch_norm = layers.BatchNormalization(
beta_initializer='glorot_uniform',
gamma_initializer='glorot_uniform'
)
self.extra_layers = create_extra_layers()
self.conf_head_layers = create_conf_head_layers(num_classes)
self.loc_head_layers = create_loc_head_layers()
def __init__(self, num_classes, arch='ssd300'):
super(SSD, self).__init__()
self.num_classes = num_classes
vgg16_layers = create_vgg16_layers()
extra_layers = create_extra_layers()
conf_head_layers = create_conf_head_layers(num_classes)
loc_head_layers = create_loc_head_layers()
if arch == 'ssd300':
# Delete the 12th block
# if the architecture is SSD300
extra_layers.pop(-1)
conf_head_layers.pop(-2)
loc_head_layers.pop(-2)
self.vgg16_layers = nn.ModuleList(vgg16_layers)
self.batch_norm = nn.BatchNorm2d(512)
self.extra_layers = nn.ModuleList(extra_layers)
self.conf_head_layers = nn.ModuleList(conf_head_layers)
self.loc_head_layers = nn.ModuleList(loc_head_layers)