EIRES:Training-free AI-Generated Image Detection via Edit-Induced Reconstruction Error Shift

Fuente: arXiv
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Hauptverfasser: Jiang, Wan, Yan, Jing, Chen, Xiaojing, Shen, Lin, Lin, Chenhao, Diao, Yunfeng, Hong, Richang
Format: Preprint
Veröffentlicht: 2025
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author Jiang, Wan
Yan, Jing
Chen, Xiaojing
Shen, Lin
Lin, Chenhao
Diao, Yunfeng
Hong, Richang
author_facet Jiang, Wan
Yan, Jing
Chen, Xiaojing
Shen, Lin
Lin, Chenhao
Diao, Yunfeng
Hong, Richang
contents Diffusion models have recently achieved remarkable photorealism, making it increasingly difficult to distinguish real images from generated ones, raising significant privacy and security concerns. In response, we present a key finding: structural edits enhance the reconstruction of real images while degrading that of generated images, creating a distinctive edit-induced reconstruction error shift. This asymmetric shift enhances the separability between real and generated images. Building on this insight, we propose EIRES, a training-free method that leverages structural edits to reveal inherent differences between real and generated images. To explain the discriminative power of this shift, we derive the reconstruction error lower bound under edit perturbations. Since EIRES requires no training, thresholding depends solely on the natural separability of the signal, where a larger margin yields more reliable detection. Extensive experiments show that EIRES is effective across diverse generative models and remains robust on the unbiased subset, even under post-processing operations.
format Preprint
id arxiv_https___arxiv_org_abs_2510_25141
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle EIRES:Training-free AI-Generated Image Detection via Edit-Induced Reconstruction Error Shift
Jiang, Wan
Yan, Jing
Chen, Xiaojing
Shen, Lin
Lin, Chenhao
Diao, Yunfeng
Hong, Richang
Computer Vision and Pattern Recognition
Diffusion models have recently achieved remarkable photorealism, making it increasingly difficult to distinguish real images from generated ones, raising significant privacy and security concerns. In response, we present a key finding: structural edits enhance the reconstruction of real images while degrading that of generated images, creating a distinctive edit-induced reconstruction error shift. This asymmetric shift enhances the separability between real and generated images. Building on this insight, we propose EIRES, a training-free method that leverages structural edits to reveal inherent differences between real and generated images. To explain the discriminative power of this shift, we derive the reconstruction error lower bound under edit perturbations. Since EIRES requires no training, thresholding depends solely on the natural separability of the signal, where a larger margin yields more reliable detection. Extensive experiments show that EIRES is effective across diverse generative models and remains robust on the unbiased subset, even under post-processing operations.
title EIRES:Training-free AI-Generated Image Detection via Edit-Induced Reconstruction Error Shift
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2510.25141