errors when running the code

[chouyiyu]

Hi !! I was playing with your cyclegan code but I got the following error message:

File "./mnist_test.py", line 254, in test_cyclegan() File "./mnist_test.py", line 182, in test_cyclegan cat_out = generator_cats.predict(mnist_in) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/keras/engine/training.py", line 1713, in predict verbose=verbose, steps=steps) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/keras/engine/training.py", line 1269, in _predict_loop batch_outs = f(ins_batch) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/keras/backend/tensorflow_backend.py", line 2273, in call **self.session_kwargs) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/tensorflow/python/client/session.py", line 895, in run run_metadata_ptr) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/tensorflow/python/client/session.py", line 1124, in _run feed_dict_tensor, options, run_metadata) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/tensorflow/python/client/session.py", line 1321, in _do_run options, run_metadata) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/tensorflow/python/client/session.py", line 1340, in _do_call raise type(e)(node_def, op, message) tensorflow.python.framework.errors_impl.InvalidArgumentError: image must have at least one channel [[Node: up_sampling2d_1/ResizeNearestNeighbor = ResizeNearestNeighbor[T=DT_FLOAT, align_corners=false, _device="/job:localhost/replica:0/task:0/gpu:0"](leaky_re_lu_23/sub, up_sampling2d_1/mul)]] [[Node: conv2d_27/Sigmoid/_59 = _Recvclient_terminated=false, recv_device="/job:localhost/replica:0/task:0/cpu:0", send_device="/job:localhost/replica:0/task:0/gpu:0", send_device_incarnation=1, tensor_name="edge_4095_conv2d_27/Sigmoid", tensor_type=DT_FLOAT, _device="/job:localhost/replica:0/task:0/cpu:0"]]

Caused by op u'up_sampling2d_1/ResizeNearestNeighbor', defined at: File "./mnist_test.py", line 254, in test_cyclegan() File "./mnist_test.py", line 111, in test_cyclegan generator_cats = mnist_generator(mnist_shape) File "/ISFILE3/USERS/chouy/Projects/DeepLearning/cycleGAN/example2/cyclegan/models.py", line 62, in mnist_generator x = UpSampling2D(size=(2, 2))(x) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/keras/engine/topology.py", line 602, in call output = self.call(inputs, **kwargs) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/keras/layers/convolutional.py", line 1361, in call self.data_format) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/keras/backend/tensorflow_backend.py", line 1768, in resize_images x = tf.image.resize_nearest_neighbor(x, new_shape) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/tensorflow/python/ops/gen_image_ops.py", line 927, in resize_nearest_neighbor name=name) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/op_def_library.py", line 767, in apply_op op_def=op_def) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/ops.py", line 2630, in create_op original_op=self._default_original_op, op_def=op_def) File "/home/USERS/chouy/Applications/anaconda2/lib/python2.7/site-packages/tensorflow/python/framework/ops.py", line 1204, in init self._traceback = self._graph._extract_stack() # pylint: disable=protected-access

InvalidArgumentError (see above for traceback): image must have at least one channel [[Node: up_sampling2d_1/ResizeNearestNeighbor = ResizeNearestNeighbor[T=DT_FLOAT, align_corners=false, _device="/job:localhost/replica:0/task:0/gpu:0"](leaky_re_lu_23/sub, up_sampling2d_1/mul)]] [[Node: conv2d_27/Sigmoid/_59 = _Recvclient_terminated=false, recv_device="/job:localhost/replica:0/task:0/cpu:0", send_device="/job:localhost/replica:0/task:0/gpu:0", send_device_incarnation=1, tensor_name="edge_4095_conv2d_27/Sigmoid", tensor_type=DT_FLOAT, _device="/job:localhost/replica:0/task:0/cpu:0"]]

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Any suggestions ?? Thank you !!

Yiyu

[alecGraves]

Not exactly sure what it is, but you should try an earlier version of tensorflow. It sounds like the upsample operation is expecting different arguments. I am not sure exactly what version of tensorflow/keras I built this for. I intended it as more of a proof-of-concept.