AnchorMark: Robust Diffusion Watermarking via Latent-Space Rotation Synchrony

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arXiv:2607.27551v1 Announce Type: new Abstract: Inversion-based watermarking embeds watermark payloads directly into the generative process, avoiding a separate post-hoc image-domain embedding stage while preserving the native visual fidelity of synthesized images. However, existing methods remain vulnerable to compound lossy post-processing, particularly when rotation is involved, as it disrupts the spatial correspondence required for latent-space decoding. To overcome this limitation, we intr