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我想調整我的輸入圖像在我的第一個Keras層,所以我跟着this SO問題。解決辦法偉大的工作,直到我救了我的模型,然後試圖在另一個文件中使用它,它拋出NameError當打開使用Tensorflow後端Keras模型
NameError: name 'ktf' is not defined
我嘗試添加:
from keras.backend import tf as ktf
到文件打開模型,但它仍然沒有按」無法在模型中識別它。我需要做什麼才能讓打開已保存模型的程序識別tensorflow後端中使用的函數?
更多的細節......
train.py:
from keras.backend import tf as ktf
#Other stuff...
model = Sequential()
model.add(Lambda(lambda x: ktf.image.resize_images(x, (80, 160)), input_shape=(160, 320, 3))) #This line referenced in error
#Rest of model and training...
model.save('model.h5')
eval.py:
from keras.backend import tf as ktf
#Other stuff...
model = load_model('model.h5') #Error is here
錯誤消息:
Using TensorFlow backend.
Traceback (most recent call last):
File "C:\program\eval.py", line 1
38, in <module>
model = load_model('model.h5')
File "C:\Program Files\Anaconda3\lib\site-packages\keras\models.py", line 246,
in load_model
model = model_from_config(model_config, custom_objects=custom_objects)
File "C:\Program Files\Anaconda3\lib\site-packages\keras\models.py", line 314,
in model_from_config
return layer_module.deserialize(config, custom_objects=custom_objects)
File "C:\Program Files\Anaconda3\lib\site-packages\keras\layers\__init__.py",
line 54, in deserialize
printable_module_name='layer')
File "C:\Program Files\Anaconda3\lib\site-packages\keras\utils\generic_utils.p
y", line 140, in deserialize_keras_object
list(custom_objects.items())))
File "C:\Program Files\Anaconda3\lib\site-packages\keras\models.py", line 1217
, in from_config
model.add(layer)
File "C:\Program Files\Anaconda3\lib\site-packages\keras\models.py", line 443,
in add
layer(x)
File "C:\Program Files\Anaconda3\lib\site-packages\keras\engine\topology.py",
line 596, in __call__
output = self.call(inputs, **kwargs)
File "C:\Program Files\Anaconda3\lib\site-packages\keras\layers\core.py", line
652, in call
return self.function(inputs, **arguments)
File "train.py", line 189, in <lambda>
model.add(Lambda(lambda x: ktf.image.resize_images(x, (80, 160)), input_shape=(160, 320, 3)))
NameError: name 'ktf' is not defined
是否安裝tensorflow在單獨的環境(VirtualEnv/Anaconda)?如果沒有,你確定tensorflow是否安裝? (運行'pip install tensorflow') –
是的,安裝了tf,我可以在同一臺機器上訓練。此外,該錯誤不在tf後端的導入處,而是在模型的加載處。這個問題實際上是'ktf'別名不被eval.py認可 – DrTarr
實際上,這似乎是一個已知問題,在鏈接的SO問題的註釋中以及類似的[here](https:// github)中都有描述。 COM/fchollet/keras /問題/ 4609)。看起來像導入後端,'K'可以解決我的問題,但是,我需要保留該模型。 – DrTarr