collaborators

7 papers

cs.CR2026

TextSeal: A Localized LLM Watermark for Provenance & Distillation Protection

Tom Sander, Hongyan Chang, Tomáš Souček +10

We introduce TextSeal, a state-of-the-art watermark for large language models. Building on Gumbel-max sampling, TextSeal introduces dual-key generation to restore output diversity,…

cs.CV2026

Learning to Watermark in the Latent Space of Generative Models

Sylvestre-Alvise Rebuffi, Tuan Tran, Valeriu Lacatusu +6

Existing approaches for watermarking AI-generated images often rely on post-hoc methods applied in pixel space, introducing computational overhead and potential visual artifacts. I…

cs.CR2026

How Good is Post-Hoc Watermarking With Language Model Rephrasing?

Pierre Fernandez, Tom Sander, Hady Elsahar +6

Generation-time text watermarking embeds statistical signals into text for traceability of AI-generated content. We explore *post-hoc watermarking* where an LLM rewrites existing t…

cs.CV2025

Pixel Seal: Adversarial-only training for invisible image and video watermarking

Tomáš Souček, Pierre Fernandez, Hady Elsahar +5

Invisible watermarking is essential for tracing the provenance of digital content. However, training state-of-the-art models remains notoriously difficult, with current approaches…

cs.LG2025

Transferable Black-Box One-Shot Forging of Watermarks via Image Preference Models

Tomáš Souček, Sylvestre-Alvise Rebuffi, Pierre Fernandez +5

Recent years have seen a surge in interest in digital content watermarking techniques, driven by the proliferation of generative models and increased legal pressure. With an ever-g…

cs.CV2025

Geometric Image Synchronization with Deep Watermarking

Pierre Fernandez, Tomáš Souček, Nikola Jovanović +5

Synchronization is the task of estimating and inverting geometric transformations (e.g., crop, rotation) applied to an image. This work introduces SyncSeal, a bespoke watermarking…