我给出尺寸为[256 256 3]的图像作为输入，并且想要相同尺寸的输出，但是显示下面提到的错误。我试过改变形状，过滤，大步没什么工作。任何其他实现相同的方法将被理解或链接到与上面相同的东西，输入和输出都是图像。 这是我的代码：
enter code here
import tensorflow as tf
import tflearn
import os
import numpy as np
from tflearn.layers.conv import conv_2d, max_pool_2d,conv_2d_transpose
from tflearn.layers.core import input_data, dropout, fully_connected
from tflearn.layers.estimator import regression
import loaddata
LR = 1e-3
MODEL_NAME = 'deblurr-{}-{}.model'.format(LR, '2conv-basic')
IMG_SIZE = 256
strides = [1,2,2,1]
convnet = input_data(shape=[None, IMG_SIZE, IMG_SIZE, 3],dtype=tf.float32,
name='input')
print ("convnet :" , convnet.shape)
convnet = conv_2d(convnet, 6, 5,strides=strides, activation='LeakyReLU')
print ("convnet :" , convnet.shape)
convnet = conv_2d(convnet,12, 5,strides=strides, activation='LeakyReLU')
print ("convnet :" , convnet.shape)
convnet = conv_2d(convnet, 24, 5,strides=strides, activation='LeakyReLU')
print ("convnet :" , convnet.shape)
convnet = conv_2d(convnet, 48, 5,strides=strides, activation='LeakyReLU')
print ("convnet :" , convnet.shape)
convnet = conv_2d(convnet, 24, 5,strides=strides, activation='LeakyReLU')
print ("convnet :" , convnet.shape)
convnet = conv_2d_transpose(convnet, 12, 5,output_shape=
[64,64,12],strides=strides, activation='tanh')
print ("convnet :" , convnet.shape)
convnet = dropout(convnet, 0.8)
print ("convnet :" , convnet.shape)
convnet = conv_2d_transpose(convnet, 6, 5,output_shape=
[128,128,6],strides=strides, activation='tanh')
print ("convnet :" , convnet.shape)
convnet = dropout(convnet, 0.8)
print ("convnet :" , convnet.shape)
convnet = conv_2d_transpose(convnet, 3, 5,output_shape=
[256,256,3],strides=strides, activation='tanh')
print ("convnet :" , convnet.shape)
convnet = dropout(convnet, 0.8)
print ("convnet :" , convnet.shape)
convnet = regression(convnet, optimizer='adam', learning_rate=LR,
loss='categorical_crossentropy', name='targets')
print ("convnet :" , convnet.shape)
model = tflearn.models.dnn.DNN(convnet)
if os.path.exists('{}.meta'.format(MODEL_NAME)):
model.load(MODEL_NAME)
print('model loaded!')
y_train, x_train = loaddata.load_data(data_type='train')
X = x_train
Y = y_train
y_test, x_test = loaddata.load_data(data_type='test')
test_x = y_test
test_y = x_test
model.fit({'input': X}, {'targets': Y}, n_epoch=10, validation_set=({'input':
test_x}, {'targets': test_y}), batch_size=2,
snapshot_step=500, show_metric=True, run_id=MODEL_NAME)
，错误就是这样：
ValueError Traceback (most recent call last)
C:\Users\USER\Anaconda3\lib\site-packages\tensorflow\python\framework\tensor_shape.py in merge_with(self, other)
562 for i, dim in enumerate(self._dims):
--> 563 new_dims.append(dim.merge_with(other[i]))
564 return TensorShape(new_dims)
C:\Users\USER\Anaconda3\lib\site-packages\tensorflow\python\framework\tensor_shape.py in merge_with(self, other)
137 other = as_dimension(other)
--> 138 self.assert_is_compatible_with(other)
139 if self._value is None:
C:\Users\USER\Anaconda3\lib\site-packages\tensorflow\python\framework\tensor_shape.py in assert_is_compatible_with(self, other)
110 raise ValueError("Dimensions %s and %s are not compatible" % (self,
--> 111 other))
112
ValueError: Dimensions 32 and 8 are not compatible
During handling of the above exception, another exception occurred:
ValueError Traceback (most recent call last)
E:\extra\notes\New folder\source\models.py in <module>()
53 print ("convnet :" , convnet.shape)
54
---> 55 model = tflearn.models.dnn.DNN(convnet)
56
57 if os.path.exists('{}.meta'.format(MODEL_NAME)):
C:\Users\USER\Anaconda3\lib\site-packages\tflearn\models\dnn.py in __init__(self, network, clip_gradients, tensorboard_verbose, tensorboard_dir, checkpoint_path, best_checkpoint_path, max_checkpoints, session, best_val_accuracy)
63 max_checkpoints=max_checkpoints,
64 session=session,
---> 65 best_val_accuracy=best_val_accuracy)
66 self.session = self.trainer.session
67
C:\Users\USER\Anaconda3\lib\site-packages\tflearn\helpers\trainer.py in __init__(self, train_ops, graph, clip_gradients, tensorboard_dir, tensorboard_verbose, checkpoint_path, best_checkpoint_path, max_checkpoints, keep_checkpoint_every_n_hours, random_seed, session, best_val_accuracy)
129 train_op.initialize_training_ops(i, self.session,
130 tensorboard_verbose,
--> 131 clip_gradients)
132
133 # Saver for saving a model
C:\Users\USER\Anaconda3\lib\site-packages\tflearn\helpers\trainer.py in initialize_training_ops(self, i, session, tensorboard_verbose, clip_gradients)
695 # Compute gradients operations
696 with tf.control_dependencies([loss_avg_op, acc_avg_op]):
--> 697 self.grad = tf.gradients(total_loss, self.train_vars)
698 if clip_gradients > 0.0:
699 self.grad, self.grad_norm = \
C:\Users\USER\Anaconda3\lib\site-packages\tensorflow\python\ops\gradients_impl.py in gradients(ys, xs, grad_ys, name, colocate_gradients_with_ops, gate_gradients, aggregation_method)
560 if (isinstance(in_grad, ops.Tensor) and
561 t_in.dtype != dtypes.resource):
--> 562 in_grad.set_shape(t_in.get_shape())
563 _SetGrad(grads, t_in, in_grad)
564 if loop_state:
C:\Users\USER\Anaconda3\lib\site-packages\tensorflow\python\framework\ops.py in set_shape(self, shape)
376 this tensor.
377 """
--> 378 self._shape = self._shape.merge_with(shape)
379
380 @property
C:\Users\USER\Anaconda3\lib\site-packages\tensorflow\python\framework\tensor_shape.py in merge_with(self, other)
564 return TensorShape(new_dims)
565 except ValueError:
--> 566 raise ValueError("Shapes %s and %s are not compatible" % (self, other))
567
568 def concatenate(self, other):
ValueError: Shapes (?, 32, 32, 24) and (?, 8, 8, 24) are not compatible
答案 0 :(得分：1)
如果您查看转换图层的形状输出：
convnet1: (?, 256, 256, 3)
convnet2: (?, 128, 128, 6)
convnet3: (?, 64, 64, 12)
convnet4: (?, 32, 32, 24)
convnet5: (?, 16, 16, 48)
convnet6: (?, 8, 8, 24)
convnet7: (?, 64, 64, 12)
convnet8: (?, 128, 128, 6)
convnet9: (?, 256, 256, 3)
convnet10: (?, 256, 256, 3)
从convnet5到convnet6，你想要以8倍的比例升级你的尺寸。但是你的代码只能在你的步幅中提升2倍：
strides = [1,2,2,1]
convnet = conv_2d_transpose(convnet, 12, 5,output_shape=
[64,64,12],strides=strides, activation='tanh')
正在反向传播的渐变形状与此图层不兼容。但是，如果您只是将此行更改为：
convnet = conv_2d_transpose(convnet, 12, 5,output_shape=
[64,64,12],strides=[1,8,8,1], activation='tanh')
然后你的代码应该可以工作。