Object-Aware Background-Controlled Editing via Weighted Velocity Guidance
- URL: http://arxiv.org/abs/2609.06288v1
- Date: Sat, 05 Sep 2026 22:53:58 GMT
- Title: Object-Aware Background-Controlled Editing via Weighted Velocity Guidance
- Abstract summary: Training-free image editing steers diffusion or flow-matching generative models at inference time by modifying prompt-conditioned velocities.<n>We propose Object-Aware Velocity Control (OAVC), a training-free framework that introduces object-level control into the velocity-integration process.
- Score: 38.29551771760371
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Training-free image editing steers diffusion or flow-matching generative models at inference time by modifying prompt-conditioned denoising velocities. Existing velocity-based editors often apply prompt-induced residuals globally over the latent space and rely on the model to localize semantic changes implicitly. For object-centric edits, these residuals are rarely zero outside the target object, so small non-target components can accumulate during multi-step integration, causing background drift and unstable object boundaries. We propose Object-Aware Velocity Control (OAVC), a training-free framework that introduces object-level control into the velocity-integration process. OAVC decouples where semantic residuals are allowed to act from how they are injected into the dynamics. It constructs a background-anchored reference interface under the source prompt and then performs object-localized safe semantic injection under the target prompt. A constrained injection operator suppresses drift-inducing velocity components, while time-adaptive spatial weighting stabilizes the transition near object boundaries. OAVC requires no training or modification of pretrained model parameters. Experiments on object-centric image and video benchmarks with image and video rectified-flow backbones show improved background preservation, structural fidelity, boundary stability, and temporal consistency while retaining effective localized editability.
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