@TachibanaYoshino In ValImggenerator function, there is no data augmenting while TrainImggenerator used. if the validating data are small, the val_acc will be very low.
Maybe you can use data enhancement, which is an open option. And I need to observe the performance of the model on the raw data, so it is not used. In general, data enhancement is used in the training phase.
@TachibanaYoshino In ValImggenerator function, there is no data augmenting while TrainImggenerator used. if the validating data are small, the val_acc will be very low.