General GAN-generated image detection by data augmentation in fingerprint domain

• URL: http://arxiv.org/abs/2212.13466v2
• Date: Sun, 9 Apr 2023 13:11:26 GMT
• Title: General GAN-generated image detection by data augmentation in fingerprint domain
• Authors: Huaming Wang, Jianwei Fei, Yunshu Dai, Lingyun Leng, Zhihua Xia
• Abstract summary: We first separate the fingerprints and contents of the GAN-generated images using an autoencoder based GAN fingerprint extractor. The original fingerprints are substituted with the perturbed fingerprints and added to the original contents, to produce images that are visually invariant but with distinct fingerprints. To our knowledge, we are the first to conduct data augmentation in the fingerprint domain.
• Score: 3.456122013525227
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this work, we investigate improving the generalizability of GAN-generated image detectors by performing data augmentation in the fingerprint domain. Specifically, we first separate the fingerprints and contents of the GAN-generated images using an autoencoder based GAN fingerprint extractor, followed by random perturbations of the fingerprints. Then the original fingerprints are substituted with the perturbed fingerprints and added to the original contents, to produce images that are visually invariant but with distinct fingerprints. The perturbed images can successfully imitate images generated by different GANs to improve the generalization of the detectors, which is demonstrated by the spectra visualization. To our knowledge, we are the first to conduct data augmentation in the fingerprint domain. Our work explores a novel prospect that is distinct from previous works on spatial and frequency domain augmentation. Extensive cross-GAN experiments demonstrate the effectiveness of our method compared to the state-of-the-art methods in detecting fake images generated by unknown GANs.

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