SlerpFlow: Spherical Trajectory Correction for Rectified Flow Inversion

TL;DR - SlerpFlow is a zero-shot geometric correction method for fast, high-fidelity inversion and editing with FLUX rectified-flow models. It preserves first-order Euler efficiency while improving reconstruction fidelity and semantic alignment without additional training.

• Uses spherical linear interpolation to align flow velocities with latent-space curvature.
• Treats trajectory curvature as necessary for remaining on the data manifold, rather than as numerical error.
• Caches corrected velocities for subsequent steps, avoiding complex high-order approximations.
• Experiments cover FLUX-based image reconstruction and semantic editing.