load hdf5 model

[bbday]

I have issue loading a keras hdf5 model into keras.net (issue is from customobject)

python code:

from keras.models import load_model
import keras.backend as K

def angle_error(y_true, y_pred):
    diff = angle_difference(K.argmax(y_true), K.argmax(y_pred))
    return K.mean(K.cast(K.abs(diff), K.floatx()))

def angle_difference(x, y):
    return 180 - abs(abs(x - y) - 180)
    
model_location = os.path.join('models', 'img_resnet50.hdf5')
model = load_model(model_location, custom_objects={'angle_error': angle_error})

c# code

string func = @"
import keras.backend as K

def angle_error(y_true, y_pred):  
    diff = angle_difference(K.argmax(y_true), K.argmax(y_pred))
    return K.mean(K.cast(K.abs(diff), K.floatx()))

def angle_difference(x, y):
    return 180 - abs(abs(x - y) - 180)
            ";

            var module = PythonEngine.ImportModule(func); //AccessViolation
            Dictionary<string, PyObject> customObjects = new Dictionary<string, PyObject>();
            customObjects.Add("angle_error", module);

            var model = BaseModel.LoadModel(modelSimpleFilePath, customObjects);

            string img_path = "test1.png";
            var img = ImageUtil.LoadImg(img_path);
            var x = ImageUtil.ImageToArray(img);
            x = np.expand_dims(x, axis: 0);
            
            x = ImageUtil.PreprocessInput(x);
            var preds = model.Predict(x);

            var predictions = ImageUtil.DecodePredictions(preds, top: 2);
            foreach (ImageNetPrediction item in predictions)
            {
                Console.WriteLine("Name: {0}, Acc: {1}", item.Word, item.PredictedValue);
            }