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GAN spectrum fingerprint

Periodic artefacts in the Fourier frequency spectrum of images generated by GAN architectures with upsampling layers. First reported by Zhang et al. (UC Berkeley, 2019). Detectable by Fourier analysis but suppressible by post-processing noise addition or image resizing.

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Related terms

Adversarial attackAutomatic Signature Verification (ASV)C2PA (Coalition for Content Provenance and Authenticity)Content-aware fillDiffusion modelESDA (Electrostatic Detection Apparatus)GAN (Generative Adversarial Network)JUMBF (JPEG Universal Metadata Box Format)PRNU (Photo Response Non-Uniformity)

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