Author

Defang Chen

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Preprint Sep 2026

DecFlowEdit: Self-Localized Flow-based Image Editing via Guidance Decoupling

Flow-based image editing (FlowEdit) enables inversion-free semantic changes through the difference between source and target velocities. In this paper, we observe that FlowEdit's default classifier-free guidance (CFG) configuration, with asymmetric source and target scales, causes substantial background leakage. Matchi...

Zhe-Yuan Zhan, Can Wang, Jia-Wei Chen et al. · 0 citations

Preprint Jul 2026

Secret-Stego Dissimilarity as a Design Axis: Invertible Coverless Image Steganography with Diffusion Models

Coverless image steganography (CIS) synthesizes a stego image rather than modifying an existing cover image, enabling authorized recipients to reconstruct the original secret image from the stego. Existing diffusion-based CIS methods can generate natural-looking stego images but preserve substantial visual similarity t...

Hongxin Xu, Jianping Mei, Can Wang et al. · 0 citations