METHOD AND SYSTEM FOR DETERMINING WHETHER INPUT DATA TO BE CLASSIFIED IS MANIPULATED INPUT DATA

A computer implemented method for determining whether input data to be classified into one of a plurality of classes is manipulated input data comprises the following steps carried out by computer hardware components: providing class-specific reference data for each class based on at least one distortion; applying the at least one distortion to the input data to obtain at least one distorted input data set; classifying the input data to obtain a reference class; classifying the at least one distorted input data set to obtain at least one distorted classification result; and determining whether the input data is manipulated input data based on the class-specific reference data for the reference class and based on the at least one distorted classification result.