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我想用Tensorflow后端使用Keras的Deconvolution2D。Keras下的解卷积问题
但我有一些问题。 首先,在output_shape,如果我通过无对batch_size时,我得到这个错误:
TypeError: Expected binary or unicode string, got None
如果我通过我用批量大小没有改变,这里是错误..:
InvalidArgumentError (see above for traceback): Conv2DCustomBackpropInput: input and out_backprop must have the same batch size
[[Node: conv2d_transpose = Conv2DBackpropInput[T=DT_FLOAT, data_format="NHWC", padding="VALID", strides=[1, 2, 2, 1], use_cudnn_on_gpu=true, _device="/job:localhost/replica:0/task:0/cpu:0"](conv2d_transpose/output_shape, transpose, Reshape_4)]]
下面是我用的模型:
model = Sequential()
reg = lambda: l1l2(l1=1e-7, l2=1e-7)
h = 5
model.add(Dense(input_dim=100, output_dim=nch * 4 * 4, W_regularizer=reg()))
model.add(BatchNormalization(mode=0))
model.add(Reshape((4, 4, nch)))
model.add(Deconvolution2D(256, h,h, output_shape=(128,8,8,256), subsample=(2,2), border_mode='same'))
model.add(BatchNormalization(mode=0, axis=1))
model.add(LeakyReLU(0.2))
model.add(Deconvolution2D(256, h,h, output_shape=(128,16,16,256), subsample=(2,2), border_mode='same'))
model.add(BatchNormalization(mode=0, axis=1))
model.add(LeakyReLU(0.2))
model.add(Deconvolution2D(64, h,h, output_shape=(128,32,32,64), subsample=(2,2), border_mode='same'))
model.add(BatchNormalization(mode=0, axis=1))
model.add(LeakyReLU(0.2))
model.add(Convolution2D(3, h, h, border_mode='same', W_regularizer=reg()))
model.add(Activation('sigmoid'))
model.summary()
为什么要将batch_size设置为None? –
@MarcinMożejko: 因为在Keras中,None表示可变批量大小。 (像Tensorflow中的-1) –