In the latest years we have seen an increased us of machine learning applications due to the increasing computational power and the development of more advanced techniques to train and implement these algorithms. Machine learning applications can be trained with real world data to perform a task without explicit programming. One of the most popular and widely used machine learning algorithm is the artificial neural network (ANN) and specially the deep neural networks (DNNs) which have shown to perform even above human precision. The great performance of DNNs have found successful applications in various areas such as avionics, automotive and medical devices.