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Loading saved model from keras importer

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Khang
Khang on 6 Apr 2023
Edited: Nihal Reddy on 10 Apr 2023
I tried to importing my model from a different computer using Matlab R022b. And then I got this error:
Error using nnet.internal.cnn.tensorflow.tf2mex
Invalid MEX-file
'C:\ProgramData\MATLAB\SupportPackages\R2022b\toolbox\nnet\supportpackages\keras_importer\+nnet\+internal\+cnn\+tensorflow\tf2mex.mexw64':
The file cannot be accessed by the system.
I used the same Matlab version with the same Deep learning toolbox

Answers (1)

Nihal Reddy
Nihal Reddy on 10 Apr 2023
Edited: Nihal Reddy on 10 Apr 2023
I understand you are getting an error while trying to import model using Keras importer in MATLAB R2022b.
The error message is mostly likely due the model missing a file called 'keras_metadata.pb', it is caused by inappropiate way when saving the model in TensorFlow.
This is because the model is not a Saved Model (https://www.tensorflow.org/guide/saved_model). Please regenerate model and save model using
model.save
instead of
tf.saved_model.save
Thus, the 'keras_metadata.pb' will be included, and MATLAB should import the model successfully.
Currently, "importKerasNetwork"supports TensorFlow-Keras versions as follows:
  • The function fully supports TensorFlow-Keras versions up to 2.2.4.
  • The function offers limited support for TensorFlow-Keras versions 2.2.5 to 2.4.0.
Refer to the following documentation link for more information and examples-

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