“…Other methods used networks proposed by their authors [53,26,54,22,18,24,21] while others are based on a hybrid approach [55,56,57,28]. Beside deep-learning and non-deep-learning categorization, these methods could be divided into image-based classifiers [53,55,26,54,22,23,56,57,28] and video-based classifiers [18,24,20,21]. For detecting images generated by GANs, Marra et al [58] performed benchmark testing on several CNNs and proposed a statistical model for detection [59].…”