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我一直在尝试基于完全卷积神经网络对此semantic segmentation code进行实验。然而，运行此代码生成造成类型错误的错误消息：索引必须是整数
fcn32model = fcn32_blank(image_size)
我没有更改任何代码下面的错误消息，并且也很困惑是什么导致这个错误。
Using Theano backend.
Traceback (most recent call last):
File "train.py", line 20, in <module>
fcn32model = fcn32_blank(image_size)
File "/home/FCN/fcn16s/utils.py", line 78, in fcn32_blank
(extra_margin/2, extra_margin/2)))) # INFO : cropping as deconv gained pixels
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/Keras-1.2.1-py3.4.egg/keras/models.py", line 332, in add
output_tensor = layer(self.outputs[0])
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/Keras-1.2.1-py3.4.egg/keras/engine/topology.py", line 572, in __call__
self.add_inbound_node(inbound_layers, node_indices, tensor_indices)
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/Keras-1.2.1-py3.4.egg/keras/engine/topology.py", line 635, in add_inbound_node
Node.create_node(self, inbound_layers, node_indices, tensor_indices)
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/Keras-1.2.1-py3.4.egg/keras/engine/topology.py", line 166, in create_node
output_tensors = to_list(outbound_layer.call(input_tensors[0], mask=input_masks[0]))
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/Keras-1.2.1-py3.4.egg/keras/layers/convolutional.py", line 1817, in call
self.cropping[1][0]:-self.cropping[1][1]]
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/theano/tensor/var.py", line 540, in __getitem__
return theano.tensor.subtensor.advanced_subtensor(self, *args)
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/theano/gof/op.py", line 604, in __call__
node = self.make_node(*inputs, **kwargs)
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/theano/tensor/subtensor.py", line 2140, in make_node
index = tuple(map(as_index_variable, index))
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/theano/tensor/subtensor.py", line 2081, in as_index_variable
return make_slice(idx)
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/theano/gof/op.py", line 604, in __call__
node = self.make_node(*inputs, **kwargs)
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/theano/tensor/type_other.py", line 39, in make_node
list(map(as_int_none_variable, inp)),
File "/devl/tensorflow/tf_0.12/lib/python3.4/site-packages/theano/tensor/type_other.py", line 20, in as_int_none_variable
raise TypeError('index must be integers')
TypeError: index must be integers