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FlowAlign: Trajectory-Regularized, Inversion-Free Flow-based Image Editing

Created by
  • Haebom

Author

Jeongsol Kim, Yeobin Hong, Jonghyun Park, Jong Chul Ye

Outline

This paper proposes to solve the Limitations of recent non-invertible flow-based image editing methods such as FlowEdit, which enables text-based image editing by solving ordinary differential equations (ODEs) using pre-trained noise-image flow models such as Stable Diffusion 3. The absence of invertible transformation, which is an advantage of FlowEdit, leads to unstable editing paths and low source consistency. In this paper, we propose FlowAlign, a novel non-invertible flow-based framework that solves these problems through optimal control-based path control. FlowAlign introduces source similarity at the endpoints as a regularization term to generate smoother and more consistent paths during the editing process. This endpoint regularization is shown to explicitly balance semantic alignment with the editing prompt and structural consistency with the source image along the path. Furthermore, we support invertible editing naturally by simply reversing the ODE path, emphasizing the reversible and consistent nature of the transformation. Extensive experiments show that FlowAlign outperforms existing methods in terms of source preservation and edit controllability.

Takeaways, Limitations

Takeaways:
We present a new framework that enables stable and consistent image editing without reverse transformation.
Solving unstable edit path problems using optimal control-based path control.
Considering both semantic alignment and structural consistency simultaneously through endpoint regulation.
Natural reverse editing support via ODE path reversal.
Improved source preservation and editing control over existing methods.
Limitations:
Although not specifically mentioned in the paper, potential Limitations issues may include increased computational costs that may arise during actual implementation and application, or decreased generalization performance for certain types of image editing.
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