Loading saved model from keras importer

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

Answer 1

[Nihal Reddy]

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-

https://www.mathworks.com/help/releases/R2022b/deeplearning/ref/importkerasnetwork.html