Mode: Infer does not work

[anubhavrohatgi]

I have trained the 100K images with 80:20 training to validation ratio. My model has completed 9 checkpoints. My test set consists of 40 images taken from the same validation set, just for testing the code. The test set is labeled 1 to 40. But when I pass this command :

python ./main.py --infer_dir=./imgs/infer/
--checkpoint_dir=./checkpoint/
--num_gpus=0
--mode=infer
following error is produced :

2018-01-31 15:25:43.350523: W tensorflow/core/framework/op_kernel.cc:1198] Failed precondition: sequence_length(0) <= 12
Traceback (most recent call last):
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1350, in _do_call
return fn(*args)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1329, in _run_fn
status, run_metadata)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/framework/errors_impl.py", line 473, in exit
c_api.TF_GetCode(self.status.status))
tensorflow.python.framework.errors_impl.FailedPreconditionError: sequence_length(0) <= 12
[[Node: CTCBeamSearchDecoder = CTCBeamSearchDecoder[beam_width=100, merge_repeated=false, top_paths=1, _device="/job:localhost/replica:0/task:0/device:CPU:0"](lstm/transpose_1, _arg_lstm/Fill_0_1)]]

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "./main.py", line 185, in
tf.app.run()
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/platform/app.py", line 124, in run
_sys.exit(main(argv))
File "./main.py", line 180, in main
infer(FLAGS.infer_dir, FLAGS.mode)
File "./main.py", line 155, in infer
dense_decoded_code = sess.run(model.dense_decoded, feed)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 895, in run
run_metadata_ptr)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1128, in _run
feed_dict_tensor, options, run_metadata)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1344, in _do_run
options, run_metadata)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1363, in _do_call
raise type(e)(node_def, op, message)
tensorflow.python.framework.errors_impl.FailedPreconditionError: sequence_length(0) <= 12
[[Node: CTCBeamSearchDecoder = CTCBeamSearchDecoder[beam_width=100, merge_repeated=false, top_paths=1, _device="/job:localhost/replica:0/task:0/device:CPU:0"](lstm/transpose_1, _arg_lstm/Fill_0_1)]]

Caused by op 'CTCBeamSearchDecoder', defined at:
File "./main.py", line 185, in
tf.app.run()
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/platform/app.py", line 124, in run
_sys.exit(main(argv))
File "./main.py", line 180, in main
infer(FLAGS.infer_dir, FLAGS.mode)
File "./main.py", line 115, in infer
model.build_graph()
File "/home/anubhav/Downloads/Manish Sir/CNN_LSTM_CTC_Tensorflow-master (2)/cnn_lstm_otc_ocr.py", line 24, in build_graph
self._build_train_op()
File "/home/anubhav/Downloads/Manish Sir/CNN_LSTM_CTC_Tensorflow-master (2)/cnn_lstm_otc_ocr.py", line 158, in _build_train_op
merge_repeated=False)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/ops/ctc_ops.py", line 273, in ctc_beam_search_decoder
merge_repeated=merge_repeated))
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/ops/gen_ctc_ops.py", line 77, in _ctc_beam_search_decoder
top_paths=top_paths, merge_repeated=merge_repeated, name=name)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/framework/op_def_library.py", line 787, in _apply_op_helper
op_def=op_def)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/framework/ops.py", line 3160, in create_op
op_def=op_def)
File "/home/anubhav/.virtualenvs/cv/local/lib/python3.5/site-packages/tensorflow/python/framework/ops.py", line 1625, in init
self._traceback = self._graph._extract_stack() # pylint: disable=protected-access

FailedPreconditionError (see above for traceback): sequence_length(0) <= 12
[[Node: CTCBeamSearchDecoder = CTCBeamSearchDecoder[beam_width=100, merge_repeated=false, top_paths=1, _device="/job:localhost/replica:0/task:0/device:CPU:0"](lstm/transpose_1, _arg_lstm/Fill_0_1)]]

How to deal with this error and correctly run the program.

For further details checkout the issue #8

[jihadbourassi]

Hi @anubhavrohatgi did you end up fixing the inference problem? i am facing also an inference problem i don't get an error when i run the inference code but i run it and then nothing happens could you share the fix to your problem? Thanks