Cannot copy to a TensorFlowLite tensor (conv2d_input) with 16384 bytes from a Java Buffer with 49152 bytes.

[priyanshnama]

Describe the bug
Input size mismatch between tflite model and java buffer.

To Reproduce
Steps to reproduce the behavior:

1. Click on drop down.
2. Choose "Identify Number"
3. click on "Choose Image"
   4.Choose and image and click Predict.
4. the app crashes at this point with error same as title the error log is attached below.

2020-09-24 22:15:36.828 19961-19961/com.priyanshnama.tf_droid E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.priyanshnama.tf_droid, PID: 19961
    java.lang.IllegalStateException: Could not execute method for android:onClick
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:414)
        at android.view.View.performClick(View.java:6312)
        at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:992)
        at android.view.View$PerformClick.run(View.java:24943)
        at android.os.Handler.handleCallback(Handler.java:790)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:192)
        at android.app.ActivityThread.main(ActivityThread.java:6754)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:549)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:828)
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Method.invoke(Native Method)
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409)
        at android.view.View.performClick(View.java:6312) 
        at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:992) 
        at android.view.View$PerformClick.run(View.java:24943) 
        at android.os.Handler.handleCallback(Handler.java:790) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:192) 
        at android.app.ActivityThread.main(ActivityThread.java:6754) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:549) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:828) 
     Caused by: java.lang.IllegalArgumentException: Cannot copy to a TensorFlowLite tensor (conv2d_input) with 16384 bytes from a Java Buffer with 49152 bytes.
        at org.tensorflow.lite.Tensor.throwIfSrcShapeIsIncompatible(Tensor.java:444)
        at org.tensorflow.lite.Tensor.setTo(Tensor.java:189)
        at org.tensorflow.lite.NativeInterpreterWrapper.run(NativeInterpreterWrapper.java:159)
        at org.tensorflow.lite.Interpreter.runForMultipleInputsOutputs(Interpreter.java:360)
        at org.tensorflow.lite.Interpreter.run(Interpreter.java:319)
        at com.priyanshnama.tf_droid.Classifier.recognizeImage(Classifier.kt:66)
        at com.priyanshnama.tf_droid.MainActivity.predict(MainActivity.kt:74)
        at java.lang.reflect.Method.invoke(Native Method) 
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409) 
        at android.view.View.performClick(View.java:6312) 
        at com.google.android.material.button.MaterialButton.performClick(MaterialButton.java:992) 
        at android.view.View$PerformClick.run(View.java:24943) 
        at android.os.Handler.handleCallback(Handler.java:790) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:192) 
        at android.app.ActivityThread.main(ActivityThread.java:6754) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:549) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:828) 

Expected behavior
The app should predict the number shown by fingers and output the same to user as a toast.

Additional context
try to manage size of image in MainActivity file.

[shivamsouravjha]

@heythere12 our project is stuck here, could you help?

[heythere12]

@shivamsouravjha I'll surely have a look and get back to you.

Thanks
Nishi

[priyanshnama]

@heythere12 Models files are added. you can have a look at them.

Possible Solution
Try to add a bunch of code in model file which shall convert the image (of any given size) to size (64 X 64) Required by the Project.

[shivamsouravjha]

@priyanshnama I've told you many times this is not how it's done 🤦‍♂️tflite download the already made up structure of model it can't config shape changed.

Model is made on shape of a dataset and can't be tempered as well,to my best knowledge it is work for Android part.