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RIGID: A Training-free and Model-Agnostic Framework for Robust AI-Generated Image Detection

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arxiv 2405.20112 v1 pith:7BRSXXLX submitted 2024-05-30 cs.CV

classification cs.CV
keywords imagesai-generatedrigidimagetraining-freemethodrobustcurrent
verification ladder T0 review T1 audit T2 compute T3 formal
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The rapid advances in generative AI models have empowered the creation of highly realistic images with arbitrary content, raising concerns about potential misuse and harm, such as Deepfakes. Current research focuses on training detectors using large datasets of generated images. However, these training-based solutions are often computationally expensive and show limited generalization to unseen generated images. In this paper, we propose a training-free method to distinguish between real and AI-generated images. We first observe that real images are more robust to tiny noise perturbations than AI-generated images in the representation space of vision foundation models. Based on this observation, we propose RIGID, a training-free and model-agnostic method for robust AI-generated image detection. RIGID is a simple yet effective approach that identifies whether an image is AI-generated by comparing the representation similarity between the original and the noise-perturbed counterpart. Our evaluation on a diverse set of AI-generated images and benchmarks shows that RIGID significantly outperforms existing trainingbased and training-free detectors. In particular, the average performance of RIGID exceeds the current best training-free method by more than 25%. Importantly, RIGID exhibits strong generalization across different image generation methods and robustness to image corruptions.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. GLID: Gated Local Intrinsic Dimension Repairs the Blind Spots of Face-Forgery Detectors

    cs.CR 2026-07 conditional novelty 6.0 of 10

    A gated, training-free local-intrinsic-dimension profile from a frozen ViT repairs face-forgery detectors on unseen GAN and diffusion axes, lifting generation-family AUC by +0.084.

  2. Effective Synthetic Image Detection via Noise Residual Clustering

    cs.CV 2026-07 conditional novelty 6.0 of 10

    Noise residual multi-scale ViT features plus real-prior K-Means detect synthetic images training-free at ~86% average accuracy, strongest on diffusion models across four benchmarks.

  3. RA-Det: Towards Universal Detection of AI-Generated Images via Robustness Asymmetry

    cs.CV 2026-03 conditional novelty 6.0 of 10

    Real images keep stable embeddings under small perturbations, generated images drift more, and RA-Det turns this 'robustness asymmetry' into a learned detector that generalizes across generators.

  4. Breaking Latent Prior Bias in Detectors for Generalizable AIGC Image Detection

    cs.CV 2025-06 conditional novelty 6.0 of 10

    Optimizing the initial latent noise of a diffusion model creates on-manifold adversarial examples that, added to training, make AIGC detectors generalize much better to unseen generators.

  5. Rethinking Data Protection in the (Generative) Artificial Intelligence Era

    cs.LG 2025-07 conditional novelty 5.0 of 10

    The paper organizes data protection in generative AI into a four-level hierarchy covering non-usability, privacy preservation, traceability, and deletability, and maps techniques and regulations onto it.

  6. RAID: Towards Robust AI-Generated Image Detection with Bit-Reversed Images

    cs.CV 2026-07 conditional novelty 4.0 of 10

    Reversing bit-plane weights ('bit-reversed image') plus a gradient-selected 32×32 patch lets a small ResNet detect AI-generated images with state-of-the-art accuracy on many benchmarks.

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