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FakeRetouch: Evading DeepFakes Detection via the Guidance of Deliberate Noise

by   Yihao Huang, et al.

The novelty and creativity of DeepFake generation techniques have attracted worldwide media attention. Many researchers focus on detecting fake images produced by these GAN-based image generation methods with fruitful results, indicating that the GAN-based image generation methods are not yet perfect. Many studies show that the upsampling procedure used in the decoder of GAN-based image generation methods inevitably introduce artifact patterns into fake images. In order to further improve the fidelity of DeepFake images, in this work, we propose a simple yet powerful framework to reduce the artifact patterns of fake images without hurting image quality. The method is based on an important observation that adding noise to a fake image can successfully reduce the artifact patterns in both spatial and frequency domains. Thus we use a combination of additive noise and deep image filtering to reconstruct the fake images, and we name our method FakeRetouch. The deep image filtering provides a specialized filter for each pixel in the noisy image, taking full advantages of deep learning. The deeply filtered images retain very high fidelity to their DeepFake counterparts. Moreover, we use the semantic information of the image to generate an adversarial guidance map to add noise intelligently. Our method aims at improving the fidelity of DeepFake images and exposing the problems of existing DeepFake detection methods, and we hope that the found vulnerabilities can help improve the future generation DeepFake detection methods.


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